After add listener automatically trigger peer list change event

* handle authentication errors in PKCE flow

* remove shadowing and replace TokenEndpoint for PKCE config

---------

Co-authored-by: Maycon Santos <mlsmaycon@gmail.com>

.github/ISSUE_TEMPLATE/bug-issue-report.md

@@ -0,0 +1,30 @@
+---
+name: Bug/Issue report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the problem**
+A clear and concise description of what the problem is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**NetBird status -d output:**
+If applicable, add the output of the `netbird status -d` command
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/pull_request_template.md

@@ -0,0 +1,11 @@
+## Describe your changes
+
+## Issue ticket number and link
+
+### Checklist
+- [ ] Is it a bug fix
+- [ ] Is a typo/documentation fix
+- [ ] Is a feature enhancement
+- [ ] It is a refactor
+- [ ] Created tests that fail without the change (if possible)
+- [ ] Extended the README / documentation, if necessary

.github/workflows/golang-test-darwin.yml

@@ -0,0 +1,36 @@
+name: Test Code Darwin
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: macos-latest
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.20.x"
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Cache Go modules
+        uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: macos-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            macos-go-
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: Test
+        run: go test -exec 'sudo --preserve-env=CI' -timeout 5m -p 1 ./...

.github/workflows/golang-test-linux.yml

@@ -0,0 +1,109 @@
+name: Test Code Linux
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        arch: ['386','amd64']
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.20.x"
+
+
+      - name: Cache Go modules
+        uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev gcc-multilib
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: Test
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} go test -exec 'sudo --preserve-env=CI' -timeout 5m -p 1 ./...
+
+  test_client_on_docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.20.x"
+
+
+      - name: Cache Go modules
+        uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: Generate Iface Test bin
+        run: CGO_ENABLED=0 go test -c -o iface-testing.bin ./iface/
+
+      - name: Generate Shared Sock Test bin
+        run: CGO_ENABLED=0 go test -c -o sharedsock-testing.bin ./sharedsock
+
+      - name: Generate RouteManager Test bin
+        run: CGO_ENABLED=0 go test -c -o routemanager-testing.bin ./client/internal/routemanager/...
+
+      - name: Generate nftables Manager Test bin
+        run: CGO_ENABLED=0 go test -c -o nftablesmanager-testing.bin ./client/firewall/nftables/...
+
+      - name: Generate Engine Test bin
+        run: CGO_ENABLED=0 go test -c -o engine-testing.bin ./client/internal
+
+      - name: Generate Peer Test bin
+        run: CGO_ENABLED=0 go test -c -o peer-testing.bin ./client/internal/peer/...
+
+      - run: chmod +x *testing.bin
+
+      - name: Run Shared Sock tests in docker
+        run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/sharedsock --entrypoint /busybox/sh gcr.io/distroless/base:debug -c /ci/sharedsock-testing.bin -test.timeout 5m -test.parallel 1
+
+      - name: Run Iface tests in docker
+        run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/iface --entrypoint /busybox/sh gcr.io/distroless/base:debug -c /ci/iface-testing.bin -test.timeout 5m -test.parallel 1
+
+
+      - name: Run RouteManager tests in docker
+        run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/client/internal/routemanager --entrypoint /busybox/sh gcr.io/distroless/base:debug -c /ci/routemanager-testing.bin  -test.timeout 5m -test.parallel 1
+
+      - name: Run nftables Manager tests in docker
+        run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/client/firewall --entrypoint /busybox/sh gcr.io/distroless/base:debug -c /ci/nftablesmanager-testing.bin  -test.timeout 5m -test.parallel 1
+
+      - name: Run Engine tests in docker
+        run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/client/internal --entrypoint /busybox/sh gcr.io/distroless/base:debug -c /ci/engine-testing.bin  -test.timeout 5m -test.parallel 1
+
+      - name: Run Peer tests in docker
+        run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/client/internal/peer  --entrypoint /busybox/sh gcr.io/distroless/base:debug -c /ci/peer-testing.bin  -test.timeout 5m -test.parallel 1

.github/workflows/golang-test-windows.yml

@@ -0,0 +1,50 @@
+name: Test Code Windows
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+env:
+  downloadPath: '${{ github.workspace }}\temp'
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: windows-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Install Go
+        uses: actions/setup-go@v4
+        id: go
+        with:
+          go-version: "1.20.x"
+
+      - name: Download wintun
+        uses: carlosperate/download-file-action@v2
+        id: download-wintun
+        with:
+          file-url: https://www.wintun.net/builds/wintun-0.14.1.zip
+          file-name: wintun.zip
+          location: ${{ env.downloadPath }}
+          sha256: '07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51'
+
+      - name: Decompressing wintun files
+        run: tar -zvxf "${{ steps.download-wintun.outputs.file-path }}" -C ${{ env.downloadPath }}
+
+      - run: mv ${{ env.downloadPath }}/wintun/bin/amd64/wintun.dll 'C:\Windows\System32\'
+
+      - run: choco install -y sysinternals
+      - run: PsExec64 -s -w ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe env -w GOMODCACHE=C:\Users\runneradmin\go\pkg\mod
+      - run: PsExec64 -s -w ${{ github.workspace }} C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe env -w GOCACHE=C:\Users\runneradmin\AppData\Local\go-build
+
+      - name: test
+        run: PsExec64 -s -w ${{ github.workspace }} cmd.exe /c "C:\hostedtoolcache\windows\go\${{ steps.go.outputs.go-version }}\x64\bin\go.exe test -timeout 5m -p 1 ./... > test-out.txt 2>&1"
+      - name: test output
+        if: ${{ always() }}
+        run: Get-Content test-out.txt

.github/workflows/golangci-lint.yml

@@ -0,0 +1,21 @@
+name: golangci-lint
+on: [pull_request]
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.20.x"
+      - name: Install dependencies
+        run: sudo apt update && sudo apt install -y -q libgtk-3-dev libayatana-appindicator3-dev libgl1-mesa-dev xorg-dev
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          args: --timeout=6m

.github/workflows/install-test-darwin.yml

@@ -0,0 +1,60 @@
+name: Test installation Darwin
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - "release_files/install.sh"
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+jobs:
+  install-cli-only:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Rename brew package
+        if: ${{ matrix.check_bin_install }}
+        run: mv /opt/homebrew/bin/brew /opt/homebrew/bin/brew.bak
+
+      - name: Run install script
+        run: |
+          sh ./release_files/install.sh
+        env:
+          SKIP_UI_APP: true
+
+      - name: Run tests
+        run: |
+          if ! command -v netbird &> /dev/null; then
+            echo "Error: netbird is not installed"
+            exit 1
+          fi
+  install-all:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Rename brew package
+        if: ${{ matrix.check_bin_install }}
+        run: mv /opt/homebrew/bin/brew /opt/homebrew/bin/brew.bak
+
+      - name: Run install script
+        run: |
+          sh ./release_files/install.sh
+
+      - name: Run tests
+        run: |
+          if ! command -v netbird &> /dev/null; then
+              echo "Error: netbird is not installed"
+              exit 1
+          fi
+
+          if [[ $(mdfind "kMDItemContentType == 'com.apple.application-bundle' && kMDItemFSName == '*NetBird UI.app'") ]]; then
+            echo "Error: NetBird UI is not installed"
+            exit 1
+          fi

.github/workflows/install-test-linux.yml

@@ -0,0 +1,38 @@
+name: Test installation Linux
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - "release_files/install.sh"
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+jobs:
+  install-cli-only:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        check_bin_install: [true, false]
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Rename apt package
+        if: ${{ matrix.check_bin_install }}
+        run: |
+          sudo mv /usr/bin/apt /usr/bin/apt.bak
+          sudo mv /usr/bin/apt-get /usr/bin/apt-get.bak
+
+      - name: Run install script
+        run: |
+          sh ./release_files/install.sh
+
+      - name: Run tests
+        run: |
+          if ! command -v netbird &> /dev/null; then
+            echo "Error: netbird is not installed"
+            exit 1
+          fi

.github/workflows/release.yml

@@ -4,6 +4,17 @@ on:
   push:
     tags:
       - 'v*'
+    branches:
+      - main
+  pull_request:
+
+env:
+  SIGN_PIPE_VER: "v0.0.8"
+  GORELEASER_VER: "v1.14.1"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
 
 jobs:
   release:
@@ -18,7 +29,7 @@ jobs:
         name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.16
+          go-version: "1.20"
       -
         name: Cache Go modules
         uses: actions/cache@v1
@@ -30,6 +41,9 @@ jobs:
       -
         name: Install modules
         run: go mod tidy
+      -
+        name: check git status
+        run: git --no-pager diff --exit-code
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v1
@@ -38,15 +52,157 @@ jobs:
         uses: docker/setup-buildx-action@v1
       -
         name: Login to Docker hub
+        if: github.event_name != 'pull_request'
         uses: docker/login-action@v1
         with:
-          username: ${{ secrets.DOCKER_USER }}
+          username: netbirdio
           password: ${{ secrets.DOCKER_TOKEN }}
+      - name: Install OS build dependencies
+        run: sudo apt update && sudo apt install -y -q gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu
+
+      - name: Install rsrc
+        run: go install github.com/akavel/rsrc@v0.10.2
+      - name: Generate windows rsrc amd64
+        run: rsrc -arch amd64 -ico client/ui/netbird.ico -manifest client/manifest.xml -o client/resources_windows_amd64.syso
+      - name: Generate windows rsrc arm64
+        run: rsrc -arch arm64 -ico client/ui/netbird.ico -manifest client/manifest.xml -o client/resources_windows_arm64.syso
+      - name: Generate windows rsrc arm
+        run: rsrc -arch arm -ico client/ui/netbird.ico -manifest client/manifest.xml -o client/resources_windows_arm.syso
+      - name: Generate windows rsrc 386
+        run: rsrc -arch 386 -ico client/ui/netbird.ico -manifest client/manifest.xml -o client/resources_windows_386.syso
       -
         name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with:
-          version: latest
+          version: ${{ env.GORELEASER_VER }}
           args: release --rm-dist
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          HOMEBREW_TAP_GITHUB_TOKEN: ${{ secrets.HOMEBREW_TAP_GITHUB_TOKEN }}
+          UPLOAD_DEBIAN_SECRET: ${{ secrets.PKG_UPLOAD_SECRET }}
+          UPLOAD_YUM_SECRET: ${{ secrets.PKG_UPLOAD_SECRET }}
+      -
+        name: upload non tags for debug purposes
+        uses: actions/upload-artifact@v2
+        with:
+          name: release
+          path: dist/
+          retention-days: 3
+
+  release_ui:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0 # It is required for GoReleaser to work properly
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.20"
+      - name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-ui-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-ui-go-
+
+      - name: Install modules
+        run: go mod tidy
+
+      - name: check git status
+        run: git --no-pager diff --exit-code
+
+      - name: Install dependencies
+        run: sudo apt update && sudo apt install -y -q libappindicator3-dev gir1.2-appindicator3-0.1 libxxf86vm-dev gcc-mingw-w64-x86-64
+      - name: Install rsrc
+        run: go install github.com/akavel/rsrc@v0.10.2
+      - name: Generate windows rsrc
+        run: rsrc -arch amd64 -ico client/ui/netbird.ico -manifest client/ui/manifest.xml -o client/ui/resources_windows_amd64.syso
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          version: ${{ env.GORELEASER_VER }}
+          args: release --config .goreleaser_ui.yaml --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          HOMEBREW_TAP_GITHUB_TOKEN: ${{ secrets.HOMEBREW_TAP_GITHUB_TOKEN }}
+          UPLOAD_DEBIAN_SECRET: ${{ secrets.PKG_UPLOAD_SECRET }}
+          UPLOAD_YUM_SECRET: ${{ secrets.PKG_UPLOAD_SECRET }}
+      - name: upload non tags for debug purposes
+        uses: actions/upload-artifact@v2
+        with:
+          name: release-ui
+          path: dist/
+          retention-days: 3
+
+  release_ui_darwin:
+    runs-on: macos-11
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0 # It is required for GoReleaser to work properly
+      -
+        name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.20"
+      -
+        name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-ui-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-ui-go-
+      -
+        name: Install modules
+        run: go mod tidy
+      -
+        name: Run GoReleaser
+        id: goreleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          version: ${{ env.GORELEASER_VER }}
+          args: release --config .goreleaser_ui_darwin.yaml --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      -
+        name: upload non tags for debug purposes
+        uses: actions/upload-artifact@v2
+        with:
+          name: release-ui-darwin
+          path: dist/
+          retention-days: 3
+
+  trigger_windows_signer:
+    runs-on: ubuntu-latest
+    needs: [release,release_ui]
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Trigger Windows binaries sign pipeline
+        uses: benc-uk/workflow-dispatch@v1
+        with:
+          workflow: Sign windows bin and installer
+          repo: netbirdio/sign-pipelines
+          ref: ${{ env.SIGN_PIPE_VER }}
+          token: ${{ secrets.SIGN_GITHUB_TOKEN }}
+          inputs: '{ "tag": "${{ github.ref }}" }'
+
+  trigger_darwin_signer:
+    runs-on: ubuntu-latest
+    needs: [release,release_ui_darwin]
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Trigger Darwin App binaries sign pipeline
+        uses: benc-uk/workflow-dispatch@v1
+        with:
+          workflow: Sign darwin ui app with dispatch
+          repo: netbirdio/sign-pipelines
+          ref: ${{ env.SIGN_PIPE_VER }}
+          token: ${{ secrets.SIGN_GITHUB_TOKEN }}
+          inputs: '{ "tag": "${{ github.ref }}" }'

.github/workflows/test-docker-compose-linux.yml

@@ -0,0 +1,123 @@
+name: Test Docker Compose Linux
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install jq
+        run: sudo apt-get install -y jq
+
+      - name: Install curl
+        run: sudo apt-get install -y curl
+
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "1.20.x"
+
+      - name: Cache Go modules
+        uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: cp setup.env
+        run: cp infrastructure_files/tests/setup.env infrastructure_files/
+
+      - name: run configure
+        working-directory: infrastructure_files
+        run: bash -x configure.sh
+        env:
+          CI_NETBIRD_DOMAIN: localhost
+          CI_NETBIRD_AUTH_CLIENT_ID: testing.client.id
+          CI_NETBIRD_AUTH_CLIENT_SECRET: testing.client.secret
+          CI_NETBIRD_AUTH_AUDIENCE: testing.ci
+          CI_NETBIRD_AUTH_OIDC_CONFIGURATION_ENDPOINT: https://example.eu.auth0.com/.well-known/openid-configuration
+          CI_NETBIRD_USE_AUTH0: true
+          CI_NETBIRD_MGMT_IDP: "none"
+          CI_NETBIRD_IDP_MGMT_CLIENT_ID: testing.client.id
+          CI_NETBIRD_IDP_MGMT_CLIENT_SECRET: testing.client.secret
+          CI_NETBIRD_AUTH_SUPPORTED_SCOPES: "openid profile email offline_access api email_verified"
+
+      - name: check values
+        working-directory: infrastructure_files
+        env:
+          CI_NETBIRD_DOMAIN: localhost
+          CI_NETBIRD_AUTH_CLIENT_ID: testing.client.id
+          CI_NETBIRD_AUTH_CLIENT_SECRET: testing.client.secret
+          CI_NETBIRD_AUTH_AUDIENCE: testing.ci
+          CI_NETBIRD_AUTH_OIDC_CONFIGURATION_ENDPOINT: https://example.eu.auth0.com/.well-known/openid-configuration
+          CI_NETBIRD_USE_AUTH0: true
+          CI_NETBIRD_AUTH_SUPPORTED_SCOPES: "openid profile email offline_access api email_verified"
+          CI_NETBIRD_AUTH_AUTHORITY: https://example.eu.auth0.com/
+          CI_NETBIRD_AUTH_JWT_CERTS: https://example.eu.auth0.com/.well-known/jwks.json
+          CI_NETBIRD_AUTH_TOKEN_ENDPOINT: https://example.eu.auth0.com/oauth/token
+          CI_NETBIRD_AUTH_DEVICE_AUTH_ENDPOINT: https://example.eu.auth0.com/oauth/device/code
+          CI_NETBIRD_AUTH_PKCE_AUTHORIZATION_ENDPOINT: https://example.eu.auth0.com/authorize
+          CI_NETBIRD_AUTH_REDIRECT_URI: "/peers"
+          CI_NETBIRD_TOKEN_SOURCE: "idToken"
+          CI_NETBIRD_AUTH_USER_ID_CLAIM: "email"
+          CI_NETBIRD_AUTH_DEVICE_AUTH_AUDIENCE: "super"
+          CI_NETBIRD_AUTH_DEVICE_AUTH_SCOPE: "openid email"
+          CI_NETBIRD_MGMT_IDP: "none"
+          CI_NETBIRD_IDP_MGMT_CLIENT_ID: testing.client.id
+          CI_NETBIRD_IDP_MGMT_CLIENT_SECRET: testing.client.secret
+
+        run: |
+          grep AUTH_CLIENT_ID docker-compose.yml | grep $CI_NETBIRD_AUTH_CLIENT_ID
+          grep AUTH_CLIENT_SECRET docker-compose.yml | grep $CI_NETBIRD_AUTH_CLIENT_SECRET
+          grep AUTH_AUTHORITY docker-compose.yml | grep $CI_NETBIRD_AUTH_AUTHORITY
+          grep AUTH_AUDIENCE docker-compose.yml | grep $CI_NETBIRD_AUTH_AUDIENCE
+          grep AUTH_SUPPORTED_SCOPES docker-compose.yml | grep "$CI_NETBIRD_AUTH_SUPPORTED_SCOPES"
+          grep USE_AUTH0 docker-compose.yml | grep $CI_NETBIRD_USE_AUTH0
+          grep NETBIRD_MGMT_API_ENDPOINT docker-compose.yml | grep "$CI_NETBIRD_DOMAIN:33073"
+          grep AUTH_REDIRECT_URI docker-compose.yml | grep $CI_NETBIRD_AUTH_REDIRECT_URI
+          grep AUTH_SILENT_REDIRECT_URI docker-compose.yml | egrep 'AUTH_SILENT_REDIRECT_URI=$'
+          grep LETSENCRYPT_DOMAIN docker-compose.yml | egrep 'LETSENCRYPT_DOMAIN=$'
+          grep NETBIRD_TOKEN_SOURCE docker-compose.yml | grep $CI_NETBIRD_TOKEN_SOURCE
+          grep AuthUserIDClaim management.json | grep $CI_NETBIRD_AUTH_USER_ID_CLAIM
+          grep -A 3 DeviceAuthorizationFlow management.json | grep -A 1 ProviderConfig | grep Audience | grep $CI_NETBIRD_AUTH_DEVICE_AUTH_AUDIENCE
+          grep -A 8 DeviceAuthorizationFlow management.json | grep -A 6 ProviderConfig | grep Scope | grep "$CI_NETBIRD_AUTH_DEVICE_AUTH_SCOPE"
+          grep UseIDToken management.json | grep false
+          grep -A 1 IdpManagerConfig management.json | grep ManagerType | grep $CI_NETBIRD_MGMT_IDP 
+          grep -A 3 IdpManagerConfig management.json | grep -A 1 ClientConfig | grep Issuer | grep $CI_NETBIRD_AUTH_AUTHORITY
+          grep -A 4 IdpManagerConfig management.json | grep -A 2 ClientConfig | grep TokenEndpoint | grep $CI_NETBIRD_AUTH_TOKEN_ENDPOINT
+          grep -A 5 IdpManagerConfig management.json | grep -A 3 ClientConfig | grep ClientID | grep $CI_NETBIRD_IDP_MGMT_CLIENT_ID
+          grep -A 6 IdpManagerConfig management.json | grep -A 4 ClientConfig | grep ClientSecret | grep $CI_NETBIRD_IDP_MGMT_CLIENT_SECRET
+          grep -A 7 IdpManagerConfig management.json | grep -A 5 ClientConfig | grep GrantType | grep client_credentials
+          grep -A 2 PKCEAuthorizationFlow management.json | grep -A 1 ProviderConfig | grep Audience | grep $CI_NETBIRD_AUTH_AUDIENCE
+          grep -A 3 PKCEAuthorizationFlow management.json | grep -A 2 ProviderConfig | grep ClientID | grep $CI_NETBIRD_AUTH_CLIENT_ID
+          grep -A 4 PKCEAuthorizationFlow management.json | grep -A 3 ProviderConfig | grep ClientSecret | grep $CI_NETBIRD_AUTH_CLIENT_SECRET
+          grep -A 5 PKCEAuthorizationFlow management.json | grep -A 4 ProviderConfig | grep AuthorizationEndpoint | grep $CI_NETBIRD_AUTH_PKCE_AUTHORIZATION_ENDPOINT
+          grep -A 6 PKCEAuthorizationFlow management.json | grep -A 5 ProviderConfig | grep TokenEndpoint | grep $CI_NETBIRD_AUTH_TOKEN_ENDPOINT
+          grep -A 7 PKCEAuthorizationFlow management.json | grep -A 6 ProviderConfig | grep Scope | grep "$CI_NETBIRD_AUTH_SUPPORTED_SCOPES"
+
+      - name: run docker compose up
+        working-directory: infrastructure_files
+        run: |
+          docker-compose up -d
+          sleep 5
+          docker-compose ps
+          docker-compose logs --tail=20
+
+      - name: test running containers
+        run: |
+          count=$(docker compose ps --format json | jq '.[] | select(.Project | contains("infrastructure_files")) | .State' | grep -c running)
+          test $count -eq 4
+        working-directory: infrastructure_files

.github/workflows/update-docs.yml

@@ -0,0 +1,22 @@
+name: update docs
+
+on:
+  push:
+    tags:
+      - 'v*'
+    paths:
+      - 'management/server/http/api/openapi.yml'
+
+jobs:
+  trigger_docs_api_update:
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/')
+    steps:
+      - name: Trigger API pages generation
+        uses: benc-uk/workflow-dispatch@v1
+        with:
+          workflow: generate api pages
+          repo: netbirdio/docs
+          ref: "refs/heads/main"
+          token: ${{ secrets.SIGN_GITHUB_TOKEN }}
+          inputs: '{ "tag": "${{ github.ref }}" }'

.gitignore

@@ -1,2 +1,21 @@
 .idea
-*.iml
+.run
+*.iml
+dist/
+bin/
+.env
+conf.json
+http-cmds.sh
+infrastructure_files/management.json
+infrastructure_files/management-*.json
+infrastructure_files/docker-compose.yml
+infrastructure_files/openid-configuration.json
+infrastructure_files/turnserver.conf
+management/management
+client/client
+client/client.exe
+*.syso
+client/.distfiles/
+infrastructure_files/setup.env
+infrastructure_files/setup-*.env
+.vscode

.goreleaser.yaml

@@ -1,39 +1,127 @@
-project_name: wiretrustee
+project_name: netbird
 builds:
-  - env: [CGO_ENABLED=0]
+  - id: netbird
+    dir: client
+    binary: netbird
+    env: [CGO_ENABLED=0]
     goos:
       - linux
       - darwin
+      - windows
     goarch:
       - arm
       - amd64
       - arm64
+      - 386
     ignore:
-      - goos: darwin
+      - goos: windows
         goarch: arm64
+      - goos: windows
+        goarch: arm
+      - goos: windows
+        goarch: 386
+    ldflags:
+      - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
+    mod_timestamp: '{{ .CommitTimestamp }}'
+    tags:
+      - load_wgnt_from_rsrc
+
+  - id: netbird-static
+    dir: client
+    binary: netbird
+    env: [CGO_ENABLED=0]
+    goos:
+      - linux
+    goarch:
+      - mips
+      - mipsle
+      - mips64
+      - mips64le
+    gomips:
+      - hardfloat
+      - softfloat
+    ldflags:
+      - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
+    mod_timestamp: '{{ .CommitTimestamp }}'
+    tags:
+      - load_wgnt_from_rsrc
+
+  - id: netbird-mgmt
+    dir: management
+    env:
+    - CGO_ENABLED=1
+    - >-
+      {{- if eq .Runtime.Goos "linux" }}
+        {{- if eq .Arch "arm64"}}CC=aarch64-linux-gnu-gcc{{- end }}
+        {{- if eq .Arch "arm"}}CC=arm-linux-gnueabihf-gcc{{- end }}
+      {{- end }}
+    binary: netbird-mgmt
+    goos:
+      - linux
+    goarch:
+      - amd64
+      - arm64
+      - arm
+    ldflags:
+      - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
+    mod_timestamp: '{{ .CommitTimestamp }}'
+
+  - id: netbird-signal
+    dir: signal
+    env: [CGO_ENABLED=0]
+    binary: netbird-signal
+    goos:
+      - linux
+    goarch:
+      - amd64
+      - arm64
+      - arm
+    ldflags:
+      - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
+    mod_timestamp: '{{ .CommitTimestamp }}'
+
+archives:
+  - builds:
+      - netbird
+      - netbird-static
+
 nfpms:
-  - maintainer: Wiretrustee <wiretrustee@wiretrustee.com>
-    description: Wiretrustee project.
-    homepage: https://wiretrustee.com/
+
+  - maintainer: Netbird <dev@netbird.io>
+    description: Netbird client.
+    homepage: https://netbird.io/
+    id: netbird-deb
+    bindir: /usr/bin
+    builds:
+      - netbird
     formats:
       - deb
-      - rpm
-    contents:
-      - src: release_files/wiretrustee.service
-        dst: /lib/systemd/system/wiretrustee.service
-
-      - src: release_files/wiretrustee.json
-        dst: /etc/wiretrustee/wiretrustee.json
-        type: "config|noreplace"
 
     scripts:
       postinstall: "release_files/post_install.sh"
+      preremove: "release_files/pre_remove.sh"
+
+  - maintainer: Netbird <dev@netbird.io>
+    description: Netbird client.
+    homepage: https://netbird.io/
+    id: netbird-rpm
+    bindir: /usr/bin
+    builds:
+      - netbird
+    formats:
+      - rpm
+
+    scripts:
+      postinstall: "release_files/post_install.sh"
+      preremove: "release_files/pre_remove.sh"
 dockers:
   - image_templates:
-      - wiretrustee/wiretrustee:signal-{{ .Version }}-amd64
+      - netbirdio/netbird:{{ .Version }}-amd64
+    ids:
+      - netbird
     goarch: amd64
-    use_buildx: true
-    dockerfile: Dockerfile
+    use: buildx
+    dockerfile: client/Dockerfile
     build_flag_templates:
       - "--platform=linux/amd64"
       - "--label=org.opencontainers.image.created={{.Date}}"
@@ -41,12 +129,14 @@ dockers:
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=maintainer=wiretrustee@wiretrustee.com"
+      - "--label=maintainer=dev@netbird.io"
   - image_templates:
-      - wiretrustee/wiretrustee:signal-{{ .Version }}-arm64v8
+      - netbirdio/netbird:{{ .Version }}-arm64v8
+    ids:
+      - netbird
     goarch: arm64
-    use_buildx: true
-    dockerfile: Dockerfile
+    use: buildx
+    dockerfile: client/Dockerfile
     build_flag_templates:
       - "--platform=linux/arm64"
       - "--label=org.opencontainers.image.created={{.Date}}"
@@ -54,15 +144,236 @@ dockers:
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
-      - "--label=maintainer=wiretrustee@wiretrustee.com"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/netbird:{{ .Version }}-arm
+    ids:
+      - netbird
+    goarch: arm
+    goarm: 6
+    use: buildx
+    dockerfile: client/Dockerfile
+    build_flag_templates:
+      - "--platform=linux/arm"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/signal:{{ .Version }}-amd64
+    ids:
+      - netbird-signal
+    goarch: amd64
+    use: buildx
+    dockerfile: signal/Dockerfile
+    build_flag_templates:
+      - "--platform=linux/amd64"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/signal:{{ .Version }}-arm64v8
+    ids:
+      - netbird-signal
+    goarch: arm64
+    use: buildx
+    dockerfile: signal/Dockerfile
+    build_flag_templates:
+      - "--platform=linux/arm64"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/signal:{{ .Version }}-arm
+    ids:
+      - netbird-signal
+    goarch: arm
+    goarm: 6
+    use: buildx
+    dockerfile: signal/Dockerfile
+    build_flag_templates:
+      - "--platform=linux/arm"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/management:{{ .Version }}-amd64
+    ids:
+      - netbird-mgmt
+    goarch: amd64
+    use: buildx
+    dockerfile: management/Dockerfile
+    build_flag_templates:
+      - "--platform=linux/amd64"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/management:{{ .Version }}-arm64v8
+    ids:
+      - netbird-mgmt
+    goarch: arm64
+    use: buildx
+    dockerfile: management/Dockerfile
+    build_flag_templates:
+      - "--platform=linux/arm64"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/management:{{ .Version }}-arm
+    ids:
+      - netbird-mgmt
+    goarch: arm
+    goarm: 6
+    use: buildx
+    dockerfile: management/Dockerfile
+    build_flag_templates:
+      - "--platform=linux/arm"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/management:{{ .Version }}-debug-amd64
+    ids:
+      - netbird-mgmt
+    goarch: amd64
+    use: buildx
+    dockerfile: management/Dockerfile.debug
+    build_flag_templates:
+      - "--platform=linux/amd64"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/management:{{ .Version }}-debug-arm64v8
+    ids:
+      - netbird-mgmt
+    goarch: arm64
+    use: buildx
+    dockerfile: management/Dockerfile.debug
+    build_flag_templates:
+      - "--platform=linux/arm64"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
 
+  - image_templates:
+      - netbirdio/management:{{ .Version }}-debug-arm
+    ids:
+      - netbird-mgmt
+    goarch: arm
+    goarm: 6
+    use: buildx
+    dockerfile: management/Dockerfile.debug
+    build_flag_templates:
+      - "--platform=linux/arm"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.title={{.ProjectName}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=maintainer=dev@netbird.io"
 docker_manifests:
-  - name_template: wiretrustee/wiretrustee:signal-{{ .Version }}
+  - name_template: netbirdio/netbird:{{ .Version }}
     image_templates:
-      - wiretrustee/wiretrustee:signal-{{ .Version }}-arm64v8
-      - wiretrustee/wiretrustee:signal-{{ .Version }}-amd64
+      - netbirdio/netbird:{{ .Version }}-arm64v8
+      - netbirdio/netbird:{{ .Version }}-arm
+      - netbirdio/netbird:{{ .Version }}-amd64
 
-  - name_template: wiretrustee/wiretrustee:signal-latest
+  - name_template: netbirdio/netbird:latest
     image_templates:
-      - wiretrustee/wiretrustee:signal-{{ .Version }}-arm64v8
-      - wiretrustee/wiretrustee:signal-{{ .Version }}-amd64
+      - netbirdio/netbird:{{ .Version }}-arm64v8
+      - netbirdio/netbird:{{ .Version }}-arm
+      - netbirdio/netbird:{{ .Version }}-amd64
+
+  - name_template: netbirdio/signal:{{ .Version }}
+    image_templates:
+      - netbirdio/signal:{{ .Version }}-arm64v8
+      - netbirdio/signal:{{ .Version }}-arm
+      - netbirdio/signal:{{ .Version }}-amd64
+
+  - name_template: netbirdio/signal:latest
+    image_templates:
+      - netbirdio/signal:{{ .Version }}-arm64v8
+      - netbirdio/signal:{{ .Version }}-arm
+      - netbirdio/signal:{{ .Version }}-amd64
+
+  - name_template: netbirdio/management:{{ .Version }}
+    image_templates:
+      - netbirdio/management:{{ .Version }}-arm64v8
+      - netbirdio/management:{{ .Version }}-arm
+      - netbirdio/management:{{ .Version }}-amd64
+
+  - name_template: netbirdio/management:latest
+    image_templates:
+      - netbirdio/management:{{ .Version }}-arm64v8
+      - netbirdio/management:{{ .Version }}-arm
+      - netbirdio/management:{{ .Version }}-amd64
+
+  - name_template: netbirdio/management:debug-latest
+    image_templates:
+      - netbirdio/management:{{ .Version }}-debug-arm64v8
+      - netbirdio/management:{{ .Version }}-debug-arm
+      - netbirdio/management:{{ .Version }}-debug-amd64
+
+brews:
+  -
+    ids:
+      - default
+    tap:
+      owner: netbirdio
+      name: homebrew-tap
+      token: "{{ .Env.HOMEBREW_TAP_GITHUB_TOKEN }}"
+    commit_author:
+      name: Netbird
+      email: dev@netbird.io
+    description: Netbird project.
+    download_strategy: CurlDownloadStrategy
+    homepage: https://netbird.io/
+    license: "BSD3"
+    test: |
+      system "#{bin}/{{ .ProjectName	}} version"
+
+uploads:
+  - name: debian
+    ids:
+    - netbird-deb
+    mode: archive
+    target: https://pkgs.wiretrustee.com/debian/pool/{{ .ArtifactName }};deb.distribution=stable;deb.component=main;deb.architecture={{ if .Arm }}armhf{{ else }}{{ .Arch }}{{ end }};deb.package=
+    username: dev@wiretrustee.com
+    method: PUT
+
+  - name: yum
+    ids:
+      - netbird-rpm
+    mode: archive
+    target: https://pkgs.wiretrustee.com/yum/{{ .Arch }}{{ if .Arm }}{{ .Arm }}{{ end }}
+    username: dev@wiretrustee.com
+    method: PUT

.goreleaser_ui.yaml

@@ -0,0 +1,94 @@
+project_name: netbird-ui
+builds:
+  - id: netbird-ui
+    dir: client/ui
+    binary: netbird-ui
+    env:
+      - CGO_ENABLED=1
+    goos:
+      - linux
+    goarch:
+      - amd64
+    ldflags:
+      - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
+    tags:
+      - legacy_appindicator
+    mod_timestamp: '{{ .CommitTimestamp }}'
+
+  - id: netbird-ui-windows
+    dir: client/ui
+    binary: netbird-ui
+    env:
+      - CGO_ENABLED=1
+      - CC=x86_64-w64-mingw32-gcc
+    goos:
+      - windows
+    goarch:
+      - amd64
+    ldflags:
+      - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
+      - -H windowsgui
+    mod_timestamp: '{{ .CommitTimestamp }}'
+
+archives:
+  - id: linux-arch
+    name_template: "{{ .ProjectName }}-linux_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+    builds:
+      - netbird-ui
+  - id: windows-arch
+    name_template: "{{ .ProjectName }}-windows_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+    builds:
+      - netbird-ui-windows
+
+nfpms:
+
+  - maintainer: Netbird <dev@netbird.io>
+    description: Netbird client UI.
+    homepage: https://netbird.io/
+    id: netbird-ui-deb
+    package_name: netbird-ui
+    builds:
+      - netbird-ui
+    formats:
+      - deb
+    contents:
+      - src: client/ui/netbird.desktop
+        dst: /usr/share/applications/netbird.desktop
+      - src: client/ui/disconnected.png
+        dst: /usr/share/pixmaps/netbird.png
+    dependencies:
+      - netbird
+
+  - maintainer: Netbird <dev@netbird.io>
+    description: Netbird client UI.
+    homepage: https://netbird.io/
+    id: netbird-ui-rpm
+    package_name: netbird-ui
+    builds:
+      - netbird-ui
+    formats:
+      - rpm
+    contents:
+      - src: client/ui/netbird.desktop
+        dst: /usr/share/applications/netbird.desktop
+      - src: client/ui/disconnected.png
+        dst: /usr/share/pixmaps/netbird.png
+    dependencies:
+      - netbird
+
+uploads:
+  - name: debian
+    ids:
+    - netbird-ui-deb
+    mode: archive
+    target: https://pkgs.wiretrustee.com/debian/pool/{{ .ArtifactName }};deb.distribution=stable;deb.component=main;deb.architecture={{ if .Arm }}armhf{{ else }}{{ .Arch }}{{ end }};deb.package=
+    username: dev@wiretrustee.com
+    method: PUT
+
+  - name: yum
+    ids:
+      - netbird-ui-rpm
+    mode: archive
+    target: https://pkgs.wiretrustee.com/yum/{{ .Arch }}{{ if .Arm }}{{ .Arm }}{{ end }}
+    username: dev@wiretrustee.com
+    method: PUT

.goreleaser_ui_darwin.yaml

@@ -0,0 +1,29 @@
+project_name: netbird-ui
+builds:
+  - id: netbird-ui-darwin
+    dir: client/ui
+    binary: netbird-ui
+    env: [CGO_ENABLED=1]
+
+    goos:
+      - darwin
+    goarch:
+      - amd64
+      - arm64
+    gomips:
+      - hardfloat
+      - softfloat
+    ldflags:
+      - -s -w -X github.com/netbirdio/netbird/version.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.CommitDate}} -X main.builtBy=goreleaser
+    mod_timestamp: '{{ .CommitTimestamp }}'
+    tags:
+      - load_wgnt_from_rsrc
+
+archives:
+  - builds:
+      - netbird-ui-darwin
+
+checksum:
+  name_template: "{{ .ProjectName }}_darwin_checksums.txt"
+changelog:
+  skip: true

AUTHORS

@@ -1,2 +1,3 @@
 Mikhail Bragin (https://github.com/braginini)
 Maycon Santos (https://github.com/mlsmaycon)
+Wiretrustee UG (haftungsbeschränkt)

CODE_OF_CONDUCT.md

@@ -0,0 +1,132 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, caste, color, religion, or sexual
+identity and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the overall
+  community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or advances of
+  any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email address,
+  without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+community@netbird.io.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series of
+actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or permanent
+ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior, harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within the
+community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.1, available at
+[https://www.contributor-covenant.org/version/2/1/code_of_conduct.html][v2.1].
+
+Community Impact Guidelines were inspired by
+[Mozilla's code of conduct enforcement ladder][Mozilla CoC].
+
+For answers to common questions about this code of conduct, see the FAQ at
+[https://www.contributor-covenant.org/faq][FAQ]. Translations are available at
+[https://www.contributor-covenant.org/translations][translations].
+
+[homepage]: https://www.contributor-covenant.org
+[v2.1]: https://www.contributor-covenant.org/version/2/1/code_of_conduct.html
+[Mozilla CoC]: https://github.com/mozilla/diversity
+[FAQ]: https://www.contributor-covenant.org/faq
+[translations]: https://www.contributor-covenant.org/translations

CONTRIBUTING.md

@@ -0,0 +1,218 @@
+# Contributing to NetBird
+
+Thanks for your interest in contributing to NetBird. 
+
+There are many ways that you can contribute:
+- Reporting issues
+- Updating documentation
+- Sharing use cases in slack or Reddit
+- Bug fix or feature enhancement
+
+If you haven't already, join our slack workspace [here](https://join.slack.com/t/netbirdio/shared_invite/zt-vrahf41g-ik1v7fV8du6t0RwxSrJ96A), we would love to discuss topics that need community contribution and enhancements to existing features.
+
+## Contents
+
+- [Contributing to NetBird](#contributing-to-netbird)
+    - [Contents](#contents)
+    - [Code of conduct](#code-of-conduct)
+    - [Directory structure](#directory-structure)
+    - [Development setup](#development-setup)
+        - [Requirements](#requirements)
+        - [Local NetBird setup](#local-netbird-setup)
+        - [Build and start](#build-and-start)
+        - [Test suite](#test-suite)
+    - [Checklist before submitting a PR](#checklist-before-submitting-a-pr)
+    - [Other project repositories](#other-project-repositories)
+    - [Checklist before submitting a new node](#checklist-before-submitting-a-new-node)
+    - [Contributor License Agreement](#contributor-license-agreement)
+
+## Code of conduct
+
+This project and everyone participating in it are governed by the Code of
+Conduct which can be found in the file [CODE_OF_CONDUCT.md](CODE_OF_CONDUCT.md).
+By participating, you are expected to uphold this code. Please report
+unacceptable behavior to community@netbird.io.
+
+## Directory structure
+
+The NetBird project monorepo is organized to maintain most of its individual dependencies code within their directories, except for a few auxiliary or shared packages.
+
+The most important directories are:
+
+- [/.github](/.github) - Github actions workflow files and issue templates
+- [/client](/client) - NetBird agent code
+- [/client/cmd](/client/cmd) - NetBird agent cli code
+- [/client/internal](/client/internal) - NetBird agent business logic code
+- [/client/proto](/client/proto) - NetBird agent daemon GRPC proto files
+- [/client/server](/client/server) - NetBird agent daemon code for background execution
+- [/client/ui](/client/ui) - NetBird agent UI code
+- [/encryption](/encryption) - Contain main encryption code for agent communication
+- [/iface](/iface) - Wireguard® interface code
+- [/infrastructure_files](/infrastructure_files) - Getting started files containing docker and template scripts
+- [/management](/management) - Management service code
+- [/management/client](/management/client) - Management service client code which is imported by the agent code
+- [/management/proto](/management/proto) - Management service GRPC proto files
+- [/management/server](/management/server) - Management service server code
+- [/management/server/http](/management/server/http) - Management service REST API code
+- [/management/server/idp](/management/server/idp) - Management service IDP management code
+- [/release_files](/release_files) - Files that goes into release packages
+- [/signal](/signal) - Signal service code
+- [/signal/client](/signal/client) - Signal service client code which is imported by the agent code
+- [/signal/peer](/signal/peer) - Signal service peer message logic
+- [/signal/proto](/signal/proto) - Signal service GRPC proto files
+- [/signal/server](/signal/server) - Signal service server code
+
+
+## Development setup
+
+If you want to contribute to bug fixes or improve existing features, you have to ensure that all needed
+dependencies are installed. Here is a short guide on how that can be done.
+
+### Requirements
+
+#### Go 1.19
+
+Follow the installation guide from https://go.dev/
+
+#### UI client - Fyne toolkit 
+
+We use the fyne toolkit in our UI client. You can follow its requirement guide to have all its dependencies installed: https://developer.fyne.io/started/#prerequisites
+
+#### gRPC
+You can follow the instructions from the quickstarter guide https://grpc.io/docs/languages/go/quickstart/#prerequisites and then run the `generate.sh` files located in each `proto` directory to generate changes.
+> **IMPORTANT**: We are very open to contributions that can improve the client daemon protocol. For Signal and Management protocols, please reach out on slack or via github issues with your proposals.
+
+#### Docker
+
+Follow the installation guide from https://docs.docker.com/get-docker/
+
+#### Goreleaser and golangci-lint
+
+We utilize two tools in our Github actions workflows:
+- Goreleaser: Used for release packaging. You can follow the installation steps [here](https://goreleaser.com/install/); keep in mind to match the version defined in [release.yml](/.github/workflows/release.yml)
+- golangci-lint: Used for linting checks. You can follow the installation steps [here](https://golangci-lint.run/usage/install/); keep in mind to match the version defined in [golangci-lint.yml](/.github/workflows/golangci-lint.yml)
+
+They can be executed from the repository root before every push or PR:
+
+**Goreleaser**
+```shell
+goreleaser --snapshot --rm-dist
+```
+**golangci-lint**
+```shell
+golangci-lint run
+```
+
+### Local NetBird setup
+
+> **IMPORTANT**: All the steps below have to get executed at least once to get the development setup up and running!
+
+Now that everything NetBird requires to run is installed, the actual NetBird code can be
+checked out and set up:
+
+1. [Fork](https://guides.github.com/activities/forking/#fork) the NetBird repository
+
+2. Clone your forked repository
+
+   ```
+   git clone https://github.com/<your_github_username>/netbird.git
+   ```
+
+3. Go into the repository folder
+
+   ```
+   cd netbird
+   ```
+
+4. Add the original NetBird repository as `upstream` to your forked repository
+
+   ```
+   git remote add upstream https://github.com/netbirdio/netbird.git
+   ```
+
+5. Install all Go dependencies:
+
+   ```
+   go mod tidy
+   ```
+
+### Build and start
+#### Client
+
+> Windows clients have a Wireguard driver requirement. We provide a bash script that can be executed in WLS 2 with docker support [wireguard_nt.sh](/client/wireguard_nt.sh).
+
+To start NetBird, execute:
+```
+cd client
+# bash wireguard_nt.sh # if windows
+go build .
+```
+
+To start NetBird the client in the foreground:
+
+```
+sudo ./client up --log-level debug --log-file console
+```
+> On Windows use a powershell with administrator privileges
+#### Signal service
+
+To start NetBird's signal, execute:
+
+```
+cd signal
+go build .
+```
+
+To start NetBird the signal service:
+
+```
+./signal run --log-level debug --log-file console
+```
+
+#### Management service
+> You may need to generate a configuration file for management. Follow steps 2 to 5 from our [self-hosting guide](https://netbird.io/docs/getting-started/self-hosting).
+
+To start NetBird's management, execute:
+
+```
+cd management
+go build .
+```
+
+To start NetBird the management service:
+
+```
+./management management --log-level debug --log-file console --config ./management.json
+```
+
+### Test suite
+
+The tests can be started via:
+
+```
+cd netbird
+go test -exec sudo ./...
+```
+> On Windows use a powershell with administrator privileges
+
+## Checklist before submitting a PR
+As a critical network service and open-source project, we must enforce a few things before submitting the pull-requests:
+- Keep functions as simple as possible, with a single purpose
+- Use private functions and constants where possible
+- Comment on any new public functions
+- Add unit tests for any new public function
+
+> When pushing fixes to the PR comments, please push as separate commits; we will squash the PR before merging, so there is no need to squash it before pushing it, and we are more than okay with 10-100 commits in a single PR. This helps review the fixes to the requested changes.
+
+## Other project repositories
+
+NetBird project is composed of 3 main repositories:
+- NetBird: This repository, which contains the code for the agents and control plane services.
+- Dashboard: https://github.com/netbirdio/dashboard, contains the Administration UI for the management service
+- Documentations: https://github.com/netbirdio/docs, contains the documentation from https://netbird.io/docs
+
+## Contributor License Agreement
+
+That we do not have any potential problems later it is sadly necessary to sign a [Contributor License Agreement](CONTRIBUTOR_LICENSE_AGREEMENT.md). That can be done literally with the push of a button.
+
+A bot will automatically comment on the pull request once it got opened asking for the agreement to be signed. Before it did not get signed it is sadly not possible to merge it in.

CONTRIBUTOR_LICENSE_AGREEMENT.md

@@ -0,0 +1,148 @@
+#  Contributor License Agreement
+
+We are incredibly thankful for the contributions we receive from the community.
+We require our external contributors to sign a Contributor License Agreement ("CLA") in
+order to ensure that our projects remain licensed under Free and Open Source licenses such
+as BSD-3 while allowing Wiretrustee to build a sustainable business.
+
+Wiretrustee is committed to having a true Open Source Software ("OSS") license for
+our software. A CLA enables Wiretrustee to safely commercialize our products
+while keeping a standard OSS license with all the rights that license grants to users: the
+ability to use the project in their own projects or businesses, to republish modified
+source, or to completely fork the project.
+
+This page gives a human-friendly summary of our CLA, details on why we require a CLA, how
+contributors can sign our CLA, and more. You may view the full legal CLA document (below).
+
+# Human-friendly summary
+
+This is a human-readable summary of (and not a substitute for) the full agreement (below).
+This highlights only some of key terms of the CLA. It has no legal value and you should
+carefully review all the terms of the actual CLA before agreeing.
+
+<li>Grant of copyright license. You give Wiretrustee permission to use your copyrighted work
+in commercial products.
+</li>
+
+<li>Grant of patent license. If your contributed work uses a patent, you give Wiretrustee a
+license to use that patent including within commercial products. You also agree that you
+have permission to grant this license.
+</li>
+
+<li>No Warranty or Support Obligations.
+By making a contribution, you are not obligating yourself to provide support for the
+contribution, and you are not taking on any warranty obligations or providing any
+assurances about how it will perform.
+</li>
+
+The CLA does not change the terms of the standard open source license used by our software
+such as BSD-3 or MIT.
+You are still free to use our projects within your own projects or businesses, republish
+modified source, and more.
+Please reference the appropriate license for the project you're contributing to to learn
+more.
+
+# Why require a CLA?
+
+Agreeing to a CLA explicitly states that you are entitled to provide a contribution, that you cannot withdraw permission
+to use your contribution at a later date, and that Wiretrustee has permission to use your contribution in our commercial
+products.
+
+This removes any ambiguities or uncertainties caused by not having a CLA and allows users and customers to confidently
+adopt our projects. At the same time, the CLA ensures that all contributions to our open source projects are licensed
+under the project's respective open source license, such as BSD-3.
+
+Requiring a CLA is a common and well-accepted practice in open source. Major open source projects require CLAs such as
+Apache Software Foundation projects, Facebook projects (such as React), Google projects (including Go), Python, Django,
+and more. Each of these projects remains licensed under permissive OSS licenses such as MIT, Apache, BSD, and more.
+
+# Signing the CLA
+
+Open a pull request ("PR") to any of our open source projects to sign the CLA. A bot will comment on the PR asking you
+to sign the CLA if you haven't already.
+
+Follow the steps given by the bot to sign the CLA. This will require you to log in with GitHub (we only request public
+information from your account) and to fill in a few additional details such as your name and email address. We will only
+use this information for CLA tracking; none of your submitted information will be used for marketing purposes.
+
+You only have to sign the CLA once. Once you've signed the CLA, future contributions to any Wiretrustee project will not
+require you to sign again.
+
+# Legal Terms and Agreement
+
+In order to clarify the intellectual property license granted with Contributions from any person or entity, Wiretrustee
+UG (haftungsbeschränkt) ("Wiretrustee") must have a Contributor License Agreement ("CLA") on file that has been signed
+by each Contributor, indicating agreement to the license terms below. This license does not change your rights to use
+your own Contributions for any other purpose.
+
+You accept and agree to the following terms and conditions for Your present and future Contributions submitted to
+Wiretrustee. Except for the license granted herein to Wiretrustee and recipients of software distributed by Wiretrustee,
+You reserve all right, title, and interest in and to Your Contributions.
+
+1. Definitions.
+
+    ```
+   "You" (or "Your") shall mean the copyright owner or legal entity authorized by the copyright owner 
+   that is making this Agreement with Wiretrustee. For legal entities, the entity making a Contribution and all other 
+   entities that control, are controlled by, or are under common control with that entity are considered 
+   to be a single Contributor. For the purposes of this definition, "control" means (i) the power, direct or indirect,
+    to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty 
+   percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
+   ```
+   ```
+    "Contribution" shall mean any original work of authorship, including any modifications or additions to 
+   an existing work, that is or previously has been intentionally submitted by You to Wiretrustee for inclusion in, 
+   or documentation of, any of the products owned or managed by Wiretrustee (the "Work"). 
+   For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication 
+   sent to Wiretrustee or its representatives, including but not limited to communication on electronic mailing lists, 
+   source code control systems, and issue tracking systems that are managed by, or on behalf of, 
+   Wiretrustee for the purpose of discussing and improving the Work, but excluding communication that is conspicuously 
+   marked or otherwise designated in writing by You as "Not a Contribution."
+   ```
+
+2. Grant of Copyright License. Subject to the terms and conditions of this Agreement, You hereby grant to Wiretrustee
+   and to recipients of software distributed by Wiretrustee a perpetual, worldwide, non-exclusive, no-charge,
+   royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly
+   perform, sublicense, and distribute Your Contributions and such derivative works.
+
+
+3. Grant of Patent License. Subject to the terms and conditions of this Agreement, You hereby grant to Wiretrustee and
+   to recipients of software distributed by Wiretrustee a perpetual, worldwide, non-exclusive, no-charge, royalty-free,
+   irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import,
+   and otherwise transfer the Work, where such license applies only to those patent claims licensable by You that are
+   necessarily infringed by Your Contribution(s) alone or by combination of Your Contribution(s) with the Work to which
+   such Contribution(s) was submitted. If any entity institutes patent litigation against You or any other entity (
+   including a cross-claim or counterclaim in a lawsuit) alleging that your Contribution, or the Work to which you have
+   contributed, constitutes direct or contributory patent infringement, then any patent licenses granted to that entity
+   under this Agreement for that Contribution or Work shall terminate as of the date such litigation is filed.
+
+
+4. You represent that you are legally entitled to grant the above license. If your employer(s) has rights to
+   intellectual property that you create that includes your Contributions, you represent that you have received
+   permission to make Contributions on behalf of that employer, that you will have received permission from your current
+   and future employers for all future Contributions, that your applicable employer has waived such rights for all of
+   your current and future Contributions to Wiretrustee, or that your employer has executed a separate Corporate CLA
+   with Wiretrustee.
+
+
+5. You represent that each of Your Contributions is Your original creation (see section 7 for submissions on behalf of
+   others). You represent that Your Contribution submissions include complete details of any third-party license or
+   other restriction (including, but not limited to, related patents and trademarks) of which you are personally aware
+   and which are associated with any part of Your Contributions.
+
+
+6. You are not expected to provide support for Your Contributions, except to the extent You desire to provide support.
+   You may provide support for free, for a fee, or not at all. Unless required by applicable law or agreed to in
+   writing, You provide Your Contributions on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+   express or implied, including, without limitation, any warranties or conditions of TITLE, NON- INFRINGEMENT,
+   MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE.
+
+
+7. Should You wish to submit work that is not Your original creation, You may submit it to Wiretrustee separately from
+   any Contribution, identifying the complete details of its source and of any license or other restriction (including,
+   but not limited to, related patents, trademarks, and license agreements) of which you are personally aware, and
+   conspicuously marking the work as "Submitted on behalf of a third-party: [named here]".
+
+
+8. You agree to notify Wiretrustee of any facts or circumstances of which you become aware that would make these
+   representations inaccurate in any respect.

Dockerfile

@@ -1,5 +0,0 @@
-FROM gcr.io/distroless/base:debug
-EXPOSE 10000
-ENTRYPOINT [ "/go/bin/wiretrustee","signal" ]
-CMD ["--log-level","DEBUG"]
-COPY wiretrustee /go/bin/wiretrustee

LICENSE

@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2021 Wiretrustee AUTHORS
+Copyright (c) 2022 Wiretrustee UG (haftungsbeschränkt) & AUTHORS
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 

README.md

@@ -1,83 +1,114 @@
-# Wiretrustee
+<p align="center">
+ <strong>:hatching_chick: New Release! Peer expiration.</strong>
+  <a href="https://github.com/netbirdio/netbird/releases">
+       Learn more
+     </a>   
+</p>
+<br/>
+<div align="center">
+<p align="center">
+  <img width="234" src="docs/media/logo-full.png"/>
+</p>
+  <p>
+     <a href="https://github.com/netbirdio/netbird/blob/main/LICENSE">
+       <img src="https://img.shields.io/badge/license-BSD--3-blue" />
+     </a> 
+   <a href="https://www.codacy.com/gh/netbirdio/netbird/dashboard?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=netbirdio/netbird&amp;utm_campaign=Badge_Grade"><img src="https://app.codacy.com/project/badge/Grade/e3013d046aec44cdb7462c8673b00976"/></a>
+    <br>
+    <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-vrahf41g-ik1v7fV8du6t0RwxSrJ96A">
+        <img src="https://img.shields.io/badge/slack-@netbird-red.svg?logo=slack"/>
+     </a>    
+  </p>
+</div>
 
-A WireGuard®-based mesh network that connects your devices into a single private network.
 
-### Why using Wiretrustee?
-
-* Connect multiple devices to each other via a secure peer-to-peer Wireguard VPN tunnel. At home, the office, or anywhere else.
-* No need to open ports and expose public IPs on the device.
-* Automatically reconnects in case of network failures or switches.
-* Automatic NAT traversal.
-* Relay server fallback in case of an unsuccessful peer-to-peer connection.
-* Private key never leaves your device.
-* Works on ARM devices (e.g. Raspberry Pi).
-
-### A bit on Wiretrustee internals
-* Wiretrustee uses WebRTC ICE implemented in [pion/ice library](https://github.com/pion/ice) to discover connection candidates when establishing a peer-to-peer connection between devices.
-* A connection session negotiation between peers is achieved with the Wiretrustee Signalling server [signal](signal/)
-* Contents of the messages sent between peers through the signaling server are encrypted with Wireguard keys, making it impossible to inspect them.
-  The routing of the messages on a Signalling server is based on public Wireguard keys. 
-* Occasionally, the NAT-traversal is unsuccessful due to strict NATs (e.g. mobile carrier-grade NAT).
-  For that matter, there is support for a relay server fallback (TURN) and a secure Wireguard tunnel is established via TURN server.
-  [Coturn](https://github.com/coturn/coturn) is the one that has been successfully used for STUN and TURN in Wiretrustee setups.
-
-### What Wiretrustee is not doing:
-* Wireguard key management. In consequence, you need to generate peer keys and specify them on Wiretrustee initialization step.
-* Peer address management. You have to specify a unique peer local address (e.g. 10.30.30.1/24) when configuring Wiretrustee
-
-### Client Installation
-1. Checkout Wiretrustee [releases](https://github.com/wiretrustee/wiretrustee/releases)   
-2. Download the latest release:
-```shell
-wget https://github.com/wiretrustee/wiretrustee/releases/download/v0.0.4/wiretrustee_0.0.4_linux_amd64.rpm
-```
-3. Install the package
-```shell
-sudo dpkg -i wiretrustee_0.0.4_linux_amd64.deb
-```
-### Client Configuration
-1. Initialize Wiretrustee:
-```shell
-sudo wiretrustee init \
- --stunURLs stun:stun.wiretrustee.com:3468,stun:stun.l.google.com:19302 \
- --turnURLs <TURN User>:<TURN password>@turn:stun.wiretrustee.com:3468  \
- --signalAddr signal.wiretrustee.com:10000  \
- --wgLocalAddr 10.30.30.1/24  \
- --log-level info
-```
-It is important to mention that the ```wgLocalAddr``` parameter has to be unique across your network.
-E.g. if you have Peer A with ```wgLocalAddr=10.30.30.1/24``` then another Peer B can have ```wgLocalAddr=10.30.30.2/24```
-
-If for some reason, you already have a generated Wireguard key, you can specify it with the ```--wgKey``` parameter. 
-If not specified, then a new one will be generated, and its corresponding public key will be output to the log.
-A new config will be generated and stored under ```/etc/wiretrustee/config.json```
-
-2. Add a peer to connect to. 
-```shell
-sudo wiretrustee add-peer --allowedIPs 10.30.30.2/32 --key '<REMOTE PEER WIREUARD PUBLIC KEY>'
-```
-
-3. Restart Wiretrustee to reload changes
-```shell
-sudo systemctl restart wiretrustee.service
-sudo systemctl status wiretrustee.service 
-```
-### Running the Signal service
-After installing the application, you can run the signal using the command below:
-````shell
-/usr/local/bin/wiretrustee signal --log-level INFO
-````
-This will launch the signal service on port 10000, in case you want to change the port, use the flag --port.
-#### Docker image
-We have packed the signal into docker images. You can pull the images from the Docker Hub and execute it with the following commands:
-````shell
-docker pull wiretrustee/wiretrustee:signal-latest
-docker run -d --name wiretrustee-signal -p 10000:10000 wiretrustee/wiretrustee:signal-latest
-````
-The default log-level is set to INFO, if you need you can change it using by updating the docker cmd as followed:
-````shell
-docker run -d --name wiretrustee-signal -p 10000:10000 wiretrustee/wiretrustee:signal-latest --log-level DEBUG
-````
-### Roadmap
-* Android app
+<p align="center">
+<strong>
+  Start using NetBird at <a href="https://app.netbird.io/">app.netbird.io</a>
+  <br/>
+  See <a href="https://netbird.io/docs/">Documentation</a>
+  <br/>
+   Join our <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-vrahf41g-ik1v7fV8du6t0RwxSrJ96A">Slack channel</a>
+  <br/>
  
+</strong>
+</p>
+
+<br>
+
+**NetBird is an open-source VPN management platform built on top of WireGuard® making it easy to create secure private networks for your organization or home.**
+
+It requires zero configuration effort leaving behind the hassle of opening ports, complex firewall rules, VPN gateways, and so forth.
+
+NetBird uses [NAT traversal techniques](https://en.wikipedia.org/wiki/Interactive_Connectivity_Establishment) to automatically create an overlay peer-to-peer network connecting machines regardless of location (home, office, data center, container, cloud, or edge environments), unifying virtual private network management experience.
+
+**Key features:**
+- \[x] Automatic IP allocation and network management with a Web UI ([separate repo](https://github.com/netbirdio/dashboard))
+- \[x] Automatic WireGuard peer (machine) discovery and configuration.
+- \[x] Encrypted peer-to-peer connections without a central VPN gateway.
+- \[x] Connection relay fallback in case a peer-to-peer connection is not possible.
+- \[x] Desktop client applications for Linux, MacOS, and Windows (systray).
+- \[x] Multiuser support - sharing network between multiple users.
+- \[x] SSO and MFA support. 
+- \[x] Multicloud and hybrid-cloud support.
+- \[x] Kernel WireGuard usage when possible.
+- \[x] Access Controls - groups & rules.
+- \[x] Remote SSH access without managing SSH keys.
+- \[x] Network Routes.  
+- \[x] Private DNS.
+- \[x] Network Activity Monitoring.
+
+**Coming soon:**
+-  \[ ] Mobile clients.
+
+### Secure peer-to-peer VPN with SSO and MFA in minutes
+
+https://user-images.githubusercontent.com/700848/197345890-2e2cded5-7b7a-436f-a444-94e80dd24f46.mov
+
+**Note**: The `main` branch may be in an *unstable or even broken state* during development. 
+For stable versions, see [releases](https://github.com/netbirdio/netbird/releases).
+
+### Start using NetBird
+-  Hosted version: [https://app.netbird.io/](https://app.netbird.io/).
+-  See our documentation for [Quickstart Guide](https://docs.netbird.io/how-to/getting-started).
+-  If you are looking to self-host NetBird, check our [Self-Hosting Guide](https://docs.netbird.io/selfhosted/selfhosted-guide).
+-  Step-by-step [Installation Guide](https://docs.netbird.io/how-to/getting-started#installation) for different platforms.
+-  Web UI [repository](https://github.com/netbirdio/dashboard).
+-  5 min [demo video](https://youtu.be/Tu9tPsUWaY0) on YouTube.
+
+
+### A bit on NetBird internals
+-  Every machine in the network runs [NetBird Agent (or Client)](client/) that manages WireGuard.
+-  Every agent connects to [Management Service](management/) that holds network state, manages peer IPs, and distributes network updates to agents (peers).
+-  NetBird agent uses WebRTC ICE implemented in [pion/ice library](https://github.com/pion/ice) to discover connection candidates when establishing a peer-to-peer connection between machines.
+-  Connection candidates are discovered with a help of [STUN](https://en.wikipedia.org/wiki/STUN) servers.
+-  Agents negotiate a connection through [Signal Service](signal/) passing p2p encrypted messages with candidates.
+-  Sometimes the NAT traversal is unsuccessful due to strict NATs (e.g. mobile carrier-grade NAT) and p2p connection isn't possible. When this occurs the system falls back to a relay server called [TURN](https://en.wikipedia.org/wiki/Traversal_Using_Relays_around_NAT), and a secure WireGuard tunnel is established via the TURN server. 
+ 
+[Coturn](https://github.com/coturn/coturn) is the one that has been successfully used for STUN and TURN in NetBird setups.
+
+<p float="left" align="middle">
+  <img src="https://netbird.io/docs/img/architecture/high-level-dia.png" width="700"/>
+</p>
+
+See a complete [architecture overview](https://docs.netbird.io/about-netbird/how-netbird-works#architecture) for details.
+
+### Roadmap
+-  [Public Roadmap](https://github.com/netbirdio/netbird/projects/2)
+
+### Community projects
+-  [NetBird on OpenWRT](https://github.com/messense/openwrt-netbird)
+-  [NetBird installer script](https://github.com/physk/netbird-installer)
+
+### Support acknowledgement
+
+In November 2022, NetBird joined the [StartUpSecure program](https://www.forschung-it-sicherheit-kommunikationssysteme.de/foerderung/bekanntmachungen/startup-secure) sponsored by The Federal Ministry of Education and Research of The Federal Republic of Germany. Together with [CISPA Helmholtz Center for Information Security](https://cispa.de/en) NetBird brings the security best practices and simplicity to private networking.
+
+![CISPA_Logo_BLACK_EN_RZ_RGB (1)](https://user-images.githubusercontent.com/700848/203091324-c6d311a0-22b5-4b05-a288-91cbc6cdcc46.png)
+
+### Testimonials
+We use open-source technologies like [WireGuard®](https://www.wireguard.com/), [Pion ICE (WebRTC)](https://github.com/pion/ice), and [Coturn](https://github.com/coturn/coturn). We very much appreciate the work these guys are doing and we'd greatly appreciate if you could support them in any way (e.g. giving a star or a contribution).
+
+### Legal
+ _WireGuard_ and the _WireGuard_ logo are [registered trademarks](https://www.wireguard.com/trademark-policy/) of Jason A. Donenfeld.
+

SECURITY.md

@@ -0,0 +1,12 @@
+# Security Policy
+
+NetBird's goal is to provide a secure network. If you find a vulnerability or bug, please report it by opening an issue [here](https://github.com/netbirdio/netbird/issues/new?assignees=&labels=&template=bug-issue-report.md&title=) or by contacting us by email.
+
+There has yet to be an official bug bounty program for the NetBird project.
+
+## Supported Versions
+- We currently support only the latest version
+
+## Reporting a Vulnerability
+
+Please report security issues to `security@netbird.io`

base62/base62.go

@@ -0,0 +1,59 @@
+package base62
+
+import (
+	"fmt"
+	"math"
+	"strings"
+)
+
+const (
+	alphabet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+	base     = uint32(len(alphabet))
+)
+
+// Encode encodes a uint32 value to a base62 string.
+func Encode(num uint32) string {
+	if num == 0 {
+		return string(alphabet[0])
+	}
+
+	var encoded strings.Builder
+	remainder := uint32(0)
+
+	for num > 0 {
+		remainder = num % base
+		encoded.WriteByte(alphabet[remainder])
+		num /= base
+	}
+
+	// Reverse the encoded string
+	encodedString := encoded.String()
+	reversed := reverse(encodedString)
+	return reversed
+}
+
+// Decode decodes a base62 string to a uint32 value.
+func Decode(encoded string) (uint32, error) {
+	var decoded uint32
+	strLen := len(encoded)
+
+	for i, char := range encoded {
+		index := strings.IndexRune(alphabet, char)
+		if index < 0 {
+			return 0, fmt.Errorf("invalid character: %c", char)
+		}
+
+		decoded += uint32(index) * uint32(math.Pow(float64(base), float64(strLen-i-1)))
+	}
+
+	return decoded, nil
+}
+
+// Reverse a string.
+func reverse(s string) string {
+	runes := []rune(s)
+	for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
+		runes[i], runes[j] = runes[j], runes[i]
+	}
+	return string(runes)
+}

base62/base62_test.go

@@ -0,0 +1,31 @@
+package base62
+
+import (
+	"testing"
+)
+
+func TestEncodeDecode(t *testing.T) {
+	tests := []struct {
+		num uint32
+	}{
+		{0},
+		{1},
+		{42},
+		{12345},
+		{99999},
+		{123456789},
+	}
+
+	for _, tt := range tests {
+		encoded := Encode(tt.num)
+		decoded, err := Decode(encoded)
+
+		if err != nil {
+			t.Errorf("Decode error: %v", err)
+		}
+
+		if decoded != tt.num {
+			t.Errorf("Decode(%v) = %v, want %v", encoded, decoded, tt.num)
+		}
+	}
+}

client/Dockerfile

@@ -0,0 +1,7 @@
+FROM gcr.io/distroless/base:debug
+ENV NB_FOREGROUND_MODE=true
+ENV PATH=/sbin:/usr/sbin:/bin:/usr/bin:/busybox
+SHELL ["/busybox/sh","-c"]
+RUN sed -i -E 's/(^root:.+)\/sbin\/nologin/\1\/busybox\/sh/g' /etc/passwd
+ENTRYPOINT [ "/go/bin/netbird","up"]
+COPY netbird /go/bin/netbird

client/android/client.go

@@ -0,0 +1,156 @@
+package android
+
+import (
+	"context"
+	"sync"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/internal/dns"
+	"github.com/netbirdio/netbird/client/internal/peer"
+	"github.com/netbirdio/netbird/client/internal/routemanager"
+	"github.com/netbirdio/netbird/client/internal/stdnet"
+	"github.com/netbirdio/netbird/client/system"
+	"github.com/netbirdio/netbird/formatter"
+	"github.com/netbirdio/netbird/iface"
+)
+
+// ConnectionListener export internal Listener for mobile
+type ConnectionListener interface {
+	peer.Listener
+}
+
+// TunAdapter export internal TunAdapter for mobile
+type TunAdapter interface {
+	iface.TunAdapter
+}
+
+// IFaceDiscover export internal IFaceDiscover for mobile
+type IFaceDiscover interface {
+	stdnet.ExternalIFaceDiscover
+}
+
+// RouteListener export internal RouteListener for mobile
+type RouteListener interface {
+	routemanager.RouteListener
+}
+
+// DnsReadyListener export internal dns ReadyListener for mobile
+type DnsReadyListener interface {
+	dns.ReadyListener
+}
+
+func init() {
+	formatter.SetLogcatFormatter(log.StandardLogger())
+}
+
+// Client struct manage the life circle of background service
+type Client struct {
+	cfgFile       string
+	tunAdapter    iface.TunAdapter
+	iFaceDiscover IFaceDiscover
+	recorder      *peer.Status
+	ctxCancel     context.CancelFunc
+	ctxCancelLock *sync.Mutex
+	deviceName    string
+	routeListener routemanager.RouteListener
+	onHostDnsFn   func([]string)
+}
+
+// NewClient instantiate a new Client
+func NewClient(cfgFile, deviceName string, tunAdapter TunAdapter, iFaceDiscover IFaceDiscover, routeListener RouteListener) *Client {
+	return &Client{
+		cfgFile:       cfgFile,
+		deviceName:    deviceName,
+		tunAdapter:    tunAdapter,
+		iFaceDiscover: iFaceDiscover,
+		recorder:      peer.NewRecorder(""),
+		ctxCancelLock: &sync.Mutex{},
+		routeListener: routeListener,
+	}
+}
+
+// Run start the internal client. It is a blocker function
+func (c *Client) Run(urlOpener URLOpener, dns *DNSList, dnsReadyListener DnsReadyListener) error {
+	cfg, err := internal.UpdateOrCreateConfig(internal.ConfigInput{
+		ConfigPath: c.cfgFile,
+	})
+	if err != nil {
+		return err
+	}
+	c.recorder.UpdateManagementAddress(cfg.ManagementURL.String())
+
+	var ctx context.Context
+	//nolint
+	ctxWithValues := context.WithValue(context.Background(), system.DeviceNameCtxKey, c.deviceName)
+	c.ctxCancelLock.Lock()
+	ctx, c.ctxCancel = context.WithCancel(ctxWithValues)
+	defer c.ctxCancel()
+	c.ctxCancelLock.Unlock()
+
+	auth := NewAuthWithConfig(ctx, cfg)
+	err = auth.login(urlOpener)
+	if err != nil {
+		return err
+	}
+
+	// todo do not throw error in case of cancelled context
+	ctx = internal.CtxInitState(ctx)
+	c.onHostDnsFn = func([]string) {}
+	return internal.RunClientMobile(ctx, cfg, c.recorder, c.tunAdapter, c.iFaceDiscover, c.routeListener, dns.items, dnsReadyListener)
+}
+
+// Stop the internal client and free the resources
+func (c *Client) Stop() {
+	c.ctxCancelLock.Lock()
+	defer c.ctxCancelLock.Unlock()
+	if c.ctxCancel == nil {
+		return
+	}
+
+	c.ctxCancel()
+}
+
+// SetTraceLogLevel configure the logger to trace level
+func (c *Client) SetTraceLogLevel() {
+	log.SetLevel(log.TraceLevel)
+}
+
+// PeersList return with the list of the PeerInfos
+func (c *Client) PeersList() *PeerInfoArray {
+
+	fullStatus := c.recorder.GetFullStatus()
+
+	peerInfos := make([]PeerInfo, len(fullStatus.Peers))
+	for n, p := range fullStatus.Peers {
+		pi := PeerInfo{
+			p.IP,
+			p.FQDN,
+			p.ConnStatus.String(),
+		}
+		peerInfos[n] = pi
+	}
+	return &PeerInfoArray{items: peerInfos}
+}
+
+// OnUpdatedHostDNS update the DNS servers addresses for root zones
+func (c *Client) OnUpdatedHostDNS(list *DNSList) error {
+	dnsServer, err := dns.GetServerDns()
+	if err != nil {
+		return err
+	}
+
+	dnsServer.OnUpdatedHostDNSServer(list.items)
+	return nil
+}
+
+// SetConnectionListener set the network connection listener
+func (c *Client) SetConnectionListener(listener ConnectionListener) {
+	c.recorder.SetConnectionListener(listener)
+}
+
+// RemoveConnectionListener remove connection listener
+func (c *Client) RemoveConnectionListener() {
+	c.recorder.RemoveConnectionListener()
+}

client/android/dns_list.go

@@ -0,0 +1,26 @@
+package android
+
+import "fmt"
+
+// DNSList is a wrapper of []string
+type DNSList struct {
+	items []string
+}
+
+// Add new DNS address to the collection
+func (array *DNSList) Add(s string) {
+	array.items = append(array.items, s)
+}
+
+// Get return an element of the collection
+func (array *DNSList) Get(i int) (string, error) {
+	if i >= len(array.items) || i < 0 {
+		return "", fmt.Errorf("out of range")
+	}
+	return array.items[i], nil
+}
+
+// Size return with the size of the collection
+func (array *DNSList) Size() int {
+	return len(array.items)
+}

client/android/dns_list_test.go

@@ -0,0 +1,24 @@
+package android
+
+import "testing"
+
+func TestDNSList_Get(t *testing.T) {
+	l := DNSList{
+		items: make([]string, 1),
+	}
+
+	_, err := l.Get(0)
+	if err != nil {
+		t.Errorf("invalid error: %s", err)
+	}
+
+	_, err = l.Get(-1)
+	if err == nil {
+		t.Errorf("expected error but got nil")
+	}
+
+	_, err = l.Get(1)
+	if err == nil {
+		t.Errorf("expected error but got nil")
+	}
+}

client/android/gomobile.go

@@ -0,0 +1,5 @@
+package android
+
+import _ "golang.org/x/mobile/bind"
+
+// to keep our CI/CD that checks go.mod and go.sum files happy, we need to import the package above

client/android/login.go

@@ -0,0 +1,222 @@
+package android
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	log "github.com/sirupsen/logrus"
+	"google.golang.org/grpc/codes"
+	gstatus "google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/cmd"
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/internal/auth"
+	"github.com/netbirdio/netbird/client/system"
+)
+
+// SSOListener is async listener for mobile framework
+type SSOListener interface {
+	OnSuccess(bool)
+	OnError(error)
+}
+
+// ErrListener is async listener for mobile framework
+type ErrListener interface {
+	OnSuccess()
+	OnError(error)
+}
+
+// URLOpener it is a callback interface. The Open function will be triggered if
+// the backend want to show an url for the user
+type URLOpener interface {
+	Open(string)
+}
+
+// Auth can register or login new client
+type Auth struct {
+	ctx     context.Context
+	config  *internal.Config
+	cfgPath string
+}
+
+// NewAuth instantiate Auth struct and validate the management URL
+func NewAuth(cfgPath string, mgmURL string) (*Auth, error) {
+	inputCfg := internal.ConfigInput{
+		ManagementURL: mgmURL,
+	}
+
+	cfg, err := internal.CreateInMemoryConfig(inputCfg)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Auth{
+		ctx:     context.Background(),
+		config:  cfg,
+		cfgPath: cfgPath,
+	}, nil
+}
+
+// NewAuthWithConfig instantiate Auth based on existing config
+func NewAuthWithConfig(ctx context.Context, config *internal.Config) *Auth {
+	return &Auth{
+		ctx:    ctx,
+		config: config,
+	}
+}
+
+// SaveConfigIfSSOSupported test the connectivity with the management server by retrieving the server device flow info.
+// If it returns a flow info than save the configuration and return true. If it gets a codes.NotFound, it means that SSO
+// is not supported and returns false without saving the configuration. For other errors return false.
+func (a *Auth) SaveConfigIfSSOSupported(listener SSOListener) {
+	go func() {
+		sso, err := a.saveConfigIfSSOSupported()
+		if err != nil {
+			listener.OnError(err)
+		} else {
+			listener.OnSuccess(sso)
+		}
+	}()
+}
+
+func (a *Auth) saveConfigIfSSOSupported() (bool, error) {
+	supportsSSO := true
+	err := a.withBackOff(a.ctx, func() (err error) {
+		_, err = internal.GetDeviceAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL)
+		if s, ok := gstatus.FromError(err); ok && s.Code() == codes.NotFound {
+			_, err = internal.GetPKCEAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL)
+			if s, ok := gstatus.FromError(err); ok && s.Code() == codes.NotFound {
+				supportsSSO = false
+				err = nil
+			}
+
+			return err
+		}
+
+		return err
+	})
+
+	if !supportsSSO {
+		return false, nil
+	}
+
+	if err != nil {
+		return false, fmt.Errorf("backoff cycle failed: %v", err)
+	}
+
+	err = internal.WriteOutConfig(a.cfgPath, a.config)
+	return true, err
+}
+
+// LoginWithSetupKeyAndSaveConfig test the connectivity with the management server with the setup key.
+func (a *Auth) LoginWithSetupKeyAndSaveConfig(resultListener ErrListener, setupKey string, deviceName string) {
+	go func() {
+		err := a.loginWithSetupKeyAndSaveConfig(setupKey, deviceName)
+		if err != nil {
+			resultListener.OnError(err)
+		} else {
+			resultListener.OnSuccess()
+		}
+	}()
+}
+
+func (a *Auth) loginWithSetupKeyAndSaveConfig(setupKey string, deviceName string) error {
+	//nolint
+	ctxWithValues := context.WithValue(a.ctx, system.DeviceNameCtxKey, deviceName)
+
+	err := a.withBackOff(a.ctx, func() error {
+		backoffErr := internal.Login(ctxWithValues, a.config, setupKey, "")
+		if s, ok := gstatus.FromError(backoffErr); ok && (s.Code() == codes.PermissionDenied) {
+			// we got an answer from management, exit backoff earlier
+			return backoff.Permanent(backoffErr)
+		}
+		return backoffErr
+	})
+	if err != nil {
+		return fmt.Errorf("backoff cycle failed: %v", err)
+	}
+
+	return internal.WriteOutConfig(a.cfgPath, a.config)
+}
+
+// Login try register the client on the server
+func (a *Auth) Login(resultListener ErrListener, urlOpener URLOpener) {
+	go func() {
+		err := a.login(urlOpener)
+		if err != nil {
+			resultListener.OnError(err)
+		} else {
+			resultListener.OnSuccess()
+		}
+	}()
+}
+
+func (a *Auth) login(urlOpener URLOpener) error {
+	var needsLogin bool
+
+	// check if we need to generate JWT token
+	err := a.withBackOff(a.ctx, func() (err error) {
+		needsLogin, err = internal.IsLoginRequired(a.ctx, a.config.PrivateKey, a.config.ManagementURL, a.config.SSHKey)
+		return
+	})
+	if err != nil {
+		return fmt.Errorf("backoff cycle failed: %v", err)
+	}
+
+	jwtToken := ""
+	if needsLogin {
+		tokenInfo, err := a.foregroundGetTokenInfo(urlOpener)
+		if err != nil {
+			return fmt.Errorf("interactive sso login failed: %v", err)
+		}
+		jwtToken = tokenInfo.GetTokenToUse()
+	}
+
+	err = a.withBackOff(a.ctx, func() error {
+		err := internal.Login(a.ctx, a.config, "", jwtToken)
+		if s, ok := gstatus.FromError(err); ok && (s.Code() == codes.InvalidArgument || s.Code() == codes.PermissionDenied) {
+			return nil
+		}
+		return err
+	})
+	if err != nil {
+		return fmt.Errorf("backoff cycle failed: %v", err)
+	}
+
+	return nil
+}
+
+func (a *Auth) foregroundGetTokenInfo(urlOpener URLOpener) (*auth.TokenInfo, error) {
+	oAuthFlow, err := auth.NewOAuthFlow(a.ctx, a.config)
+	if err != nil {
+		return nil, err
+	}
+
+	flowInfo, err := oAuthFlow.RequestAuthInfo(context.TODO())
+	if err != nil {
+		return nil, fmt.Errorf("getting a request OAuth flow info failed: %v", err)
+	}
+
+	go urlOpener.Open(flowInfo.VerificationURIComplete)
+
+	waitTimeout := time.Duration(flowInfo.ExpiresIn)
+	waitCTX, cancel := context.WithTimeout(a.ctx, waitTimeout*time.Second)
+	defer cancel()
+	tokenInfo, err := oAuthFlow.WaitToken(waitCTX, flowInfo)
+	if err != nil {
+		return nil, fmt.Errorf("waiting for browser login failed: %v", err)
+	}
+
+	return &tokenInfo, nil
+}
+
+func (a *Auth) withBackOff(ctx context.Context, bf func() error) error {
+	return backoff.RetryNotify(
+		bf,
+		backoff.WithContext(cmd.CLIBackOffSettings, ctx),
+		func(err error, duration time.Duration) {
+			log.Warnf("retrying Login to the Management service in %v due to error %v", duration, err)
+		})
+}

client/android/peer_notifier.go

@@ -0,0 +1,36 @@
+package android
+
+// PeerInfo describe information about the peers. It designed for the UI usage
+type PeerInfo struct {
+	IP         string
+	FQDN       string
+	ConnStatus string // Todo replace to enum
+}
+
+// PeerInfoCollection made for Java layer to get non default types as collection
+type PeerInfoCollection interface {
+	Add(s string) PeerInfoCollection
+	Get(i int) string
+	Size() int
+}
+
+// PeerInfoArray is the implementation of the PeerInfoCollection
+type PeerInfoArray struct {
+	items []PeerInfo
+}
+
+// Add new PeerInfo to the collection
+func (array PeerInfoArray) Add(s PeerInfo) PeerInfoArray {
+	array.items = append(array.items, s)
+	return array
+}
+
+// Get return an element of the collection
+func (array PeerInfoArray) Get(i int) *PeerInfo {
+	return &array.items[i]
+}
+
+// Size return with the size of the collection
+func (array PeerInfoArray) Size() int {
+	return len(array.items)
+}

client/android/preferences.go

@@ -0,0 +1,78 @@
+package android
+
+import (
+	"github.com/netbirdio/netbird/client/internal"
+)
+
+// Preferences export a subset of the internal config for gomobile
+type Preferences struct {
+	configInput internal.ConfigInput
+}
+
+// NewPreferences create new Preferences instance
+func NewPreferences(configPath string) *Preferences {
+	ci := internal.ConfigInput{
+		ConfigPath: configPath,
+	}
+	return &Preferences{ci}
+}
+
+// GetManagementURL read url from config file
+func (p *Preferences) GetManagementURL() (string, error) {
+	if p.configInput.ManagementURL != "" {
+		return p.configInput.ManagementURL, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return "", err
+	}
+	return cfg.ManagementURL.String(), err
+}
+
+// SetManagementURL store the given url and wait for commit
+func (p *Preferences) SetManagementURL(url string) {
+	p.configInput.ManagementURL = url
+}
+
+// GetAdminURL read url from config file
+func (p *Preferences) GetAdminURL() (string, error) {
+	if p.configInput.AdminURL != "" {
+		return p.configInput.AdminURL, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return "", err
+	}
+	return cfg.AdminURL.String(), err
+}
+
+// SetAdminURL store the given url and wait for commit
+func (p *Preferences) SetAdminURL(url string) {
+	p.configInput.AdminURL = url
+}
+
+// GetPreSharedKey read preshared key from config file
+func (p *Preferences) GetPreSharedKey() (string, error) {
+	if p.configInput.PreSharedKey != nil {
+		return *p.configInput.PreSharedKey, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return "", err
+	}
+	return cfg.PreSharedKey, err
+}
+
+// SetPreSharedKey store the given key and wait for commit
+func (p *Preferences) SetPreSharedKey(key string) {
+	p.configInput.PreSharedKey = &key
+}
+
+// Commit write out the changes into config file
+func (p *Preferences) Commit() error {
+	_, err := internal.UpdateOrCreateConfig(p.configInput)
+	return err
+}

client/android/preferences_test.go

@@ -0,0 +1,120 @@
+package android
+
+import (
+	"path/filepath"
+	"testing"
+
+	"github.com/netbirdio/netbird/client/internal"
+)
+
+func TestPreferences_DefaultValues(t *testing.T) {
+	cfgFile := filepath.Join(t.TempDir(), "netbird.json")
+	p := NewPreferences(cfgFile)
+	defaultVar, err := p.GetAdminURL()
+	if err != nil {
+		t.Fatalf("failed to read default value: %s", err)
+	}
+
+	if defaultVar != internal.DefaultAdminURL {
+		t.Errorf("invalid default admin url: %s", defaultVar)
+	}
+
+	defaultVar, err = p.GetManagementURL()
+	if err != nil {
+		t.Fatalf("failed to read default management URL: %s", err)
+	}
+
+	if defaultVar != internal.DefaultManagementURL {
+		t.Errorf("invalid default management url: %s", defaultVar)
+	}
+
+	var preSharedKey string
+	preSharedKey, err = p.GetPreSharedKey()
+	if err != nil {
+		t.Fatalf("failed to read default preshared key: %s", err)
+	}
+
+	if preSharedKey != "" {
+		t.Errorf("invalid preshared key: %s", preSharedKey)
+	}
+}
+
+func TestPreferences_ReadUncommitedValues(t *testing.T) {
+	exampleString := "exampleString"
+	cfgFile := filepath.Join(t.TempDir(), "netbird.json")
+	p := NewPreferences(cfgFile)
+
+	p.SetAdminURL(exampleString)
+	resp, err := p.GetAdminURL()
+	if err != nil {
+		t.Fatalf("failed to read admin url: %s", err)
+	}
+
+	if resp != exampleString {
+		t.Errorf("unexpected admin url: %s", resp)
+	}
+
+	p.SetManagementURL(exampleString)
+	resp, err = p.GetManagementURL()
+	if err != nil {
+		t.Fatalf("failed to read managmenet url: %s", err)
+	}
+
+	if resp != exampleString {
+		t.Errorf("unexpected managemenet url: %s", resp)
+	}
+
+	p.SetPreSharedKey(exampleString)
+	resp, err = p.GetPreSharedKey()
+	if err != nil {
+		t.Fatalf("failed to read preshared key: %s", err)
+	}
+
+	if resp != exampleString {
+		t.Errorf("unexpected preshared key: %s", resp)
+	}
+}
+
+func TestPreferences_Commit(t *testing.T) {
+	exampleURL := "https://myurl.com:443"
+	examplePresharedKey := "topsecret"
+	cfgFile := filepath.Join(t.TempDir(), "netbird.json")
+	p := NewPreferences(cfgFile)
+
+	p.SetAdminURL(exampleURL)
+	p.SetManagementURL(exampleURL)
+	p.SetPreSharedKey(examplePresharedKey)
+
+	err := p.Commit()
+	if err != nil {
+		t.Fatalf("failed to save changes: %s", err)
+	}
+
+	p = NewPreferences(cfgFile)
+	resp, err := p.GetAdminURL()
+	if err != nil {
+		t.Fatalf("failed to read admin url: %s", err)
+	}
+
+	if resp != exampleURL {
+		t.Errorf("unexpected admin url: %s", resp)
+	}
+
+	resp, err = p.GetManagementURL()
+	if err != nil {
+		t.Fatalf("failed to read managmenet url: %s", err)
+	}
+
+	if resp != exampleURL {
+		t.Errorf("unexpected managemenet url: %s", resp)
+	}
+
+	resp, err = p.GetPreSharedKey()
+	if err != nil {
+		t.Fatalf("failed to read preshared key: %s", err)
+	}
+
+	if resp != examplePresharedKey {
+		t.Errorf("unexpected preshared key: %s", resp)
+	}
+}

client/cmd/down.go

@@ -0,0 +1,46 @@
+package cmd
+
+import (
+	"context"
+	"github.com/netbirdio/netbird/util"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+var downCmd = &cobra.Command{
+	Use:   "down",
+	Short: "down netbird connections",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := util.InitLog(logLevel, "console")
+		if err != nil {
+			log.Errorf("failed initializing log %v", err)
+			return err
+		}
+
+		ctx, cancel := context.WithTimeout(context.Background(), time.Second*3)
+		defer cancel()
+
+		conn, err := DialClientGRPCServer(ctx, daemonAddr)
+		if err != nil {
+			log.Errorf("failed to connect to service CLI interface %v", err)
+			return err
+		}
+		defer conn.Close()
+
+		daemonClient := proto.NewDaemonServiceClient(conn)
+
+		if _, err := daemonClient.Down(ctx, &proto.DownRequest{}); err != nil {
+			log.Errorf("call service down method: %v", err)
+			return err
+		}
+		return nil
+	},
+}

client/cmd/login.go

@@ -0,0 +1,207 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"github.com/netbirdio/netbird/client/internal/auth"
+	"strings"
+	"time"
+
+	"github.com/skratchdot/open-golang/open"
+	"google.golang.org/grpc/codes"
+	gstatus "google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/util"
+
+	"github.com/spf13/cobra"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/proto"
+	"github.com/netbirdio/netbird/client/system"
+)
+
+var loginCmd = &cobra.Command{
+	Use:   "login",
+	Short: "login to the Netbird Management Service (first run)",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := util.InitLog(logLevel, "console")
+		if err != nil {
+			return fmt.Errorf("failed initializing log %v", err)
+		}
+
+		ctx := internal.CtxInitState(context.Background())
+
+		if hostName != "" {
+			// nolint
+			ctx = context.WithValue(ctx, system.DeviceNameCtxKey, hostName)
+		}
+
+		// workaround to run without service
+		if logFile == "console" {
+			err = handleRebrand(cmd)
+			if err != nil {
+				return err
+			}
+
+			ic := internal.ConfigInput{
+				ManagementURL: managementURL,
+				AdminURL:      adminURL,
+				ConfigPath:    configPath,
+			}
+			if preSharedKey != "" {
+				ic.PreSharedKey = &preSharedKey
+			}
+
+			config, err := internal.UpdateOrCreateConfig(ic)
+			if err != nil {
+				return fmt.Errorf("get config file: %v", err)
+			}
+
+			config, _ = internal.UpdateOldManagementPort(ctx, config, configPath)
+
+			err = foregroundLogin(ctx, cmd, config, setupKey)
+			if err != nil {
+				return fmt.Errorf("foreground login failed: %v", err)
+			}
+			cmd.Println("Logging successfully")
+			return nil
+		}
+
+		conn, err := DialClientGRPCServer(ctx, daemonAddr)
+		if err != nil {
+			return fmt.Errorf("failed to connect to daemon error: %v\n"+
+				"If the daemon is not running please run: "+
+				"\nnetbird service install \nnetbird service start\n", err)
+		}
+		defer conn.Close()
+
+		client := proto.NewDaemonServiceClient(conn)
+
+		loginRequest := proto.LoginRequest{
+			SetupKey:      setupKey,
+			PreSharedKey:  preSharedKey,
+			ManagementUrl: managementURL,
+		}
+
+		var loginErr error
+
+		var loginResp *proto.LoginResponse
+
+		err = WithBackOff(func() error {
+			var backOffErr error
+			loginResp, backOffErr = client.Login(ctx, &loginRequest)
+			if s, ok := gstatus.FromError(backOffErr); ok && (s.Code() == codes.InvalidArgument ||
+				s.Code() == codes.PermissionDenied ||
+				s.Code() == codes.NotFound ||
+				s.Code() == codes.Unimplemented) {
+				loginErr = backOffErr
+				return nil
+			}
+			return backOffErr
+		})
+		if err != nil {
+			return fmt.Errorf("login backoff cycle failed: %v", err)
+		}
+
+		if loginErr != nil {
+			return fmt.Errorf("login failed: %v", loginErr)
+		}
+
+		if loginResp.NeedsSSOLogin {
+			openURL(cmd, loginResp.VerificationURIComplete, loginResp.UserCode)
+
+			_, err = client.WaitSSOLogin(ctx, &proto.WaitSSOLoginRequest{UserCode: loginResp.UserCode})
+			if err != nil {
+				return fmt.Errorf("waiting sso login failed with: %v", err)
+			}
+		}
+
+		cmd.Println("Logging successfully")
+
+		return nil
+	},
+}
+
+func foregroundLogin(ctx context.Context, cmd *cobra.Command, config *internal.Config, setupKey string) error {
+	needsLogin := false
+
+	err := WithBackOff(func() error {
+		err := internal.Login(ctx, config, "", "")
+		if s, ok := gstatus.FromError(err); ok && (s.Code() == codes.InvalidArgument || s.Code() == codes.PermissionDenied) {
+			needsLogin = true
+			return nil
+		}
+		return err
+	})
+	if err != nil {
+		return fmt.Errorf("backoff cycle failed: %v", err)
+	}
+
+	jwtToken := ""
+	if setupKey == "" && needsLogin {
+		tokenInfo, err := foregroundGetTokenInfo(ctx, cmd, config)
+		if err != nil {
+			return fmt.Errorf("interactive sso login failed: %v", err)
+		}
+		jwtToken = tokenInfo.GetTokenToUse()
+	}
+
+	err = WithBackOff(func() error {
+		err := internal.Login(ctx, config, setupKey, jwtToken)
+		if s, ok := gstatus.FromError(err); ok && (s.Code() == codes.InvalidArgument || s.Code() == codes.PermissionDenied) {
+			return nil
+		}
+		return err
+	})
+	if err != nil {
+		return fmt.Errorf("backoff cycle failed: %v", err)
+	}
+
+	return nil
+}
+
+func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *internal.Config) (*auth.TokenInfo, error) {
+	oAuthFlow, err := auth.NewOAuthFlow(ctx, config)
+	if err != nil {
+		return nil, err
+	}
+
+	flowInfo, err := oAuthFlow.RequestAuthInfo(context.TODO())
+	if err != nil {
+		return nil, fmt.Errorf("getting a request OAuth flow info failed: %v", err)
+	}
+
+	openURL(cmd, flowInfo.VerificationURIComplete, flowInfo.UserCode)
+
+	waitTimeout := time.Duration(flowInfo.ExpiresIn)
+	waitCTX, c := context.WithTimeout(context.TODO(), waitTimeout*time.Second)
+	defer c()
+
+	tokenInfo, err := oAuthFlow.WaitToken(waitCTX, flowInfo)
+	if err != nil {
+		return nil, fmt.Errorf("waiting for browser login failed: %v", err)
+	}
+
+	return &tokenInfo, nil
+}
+
+func openURL(cmd *cobra.Command, verificationURIComplete, userCode string) {
+	var codeMsg string
+	if userCode != "" {
+		if !strings.Contains(verificationURIComplete, userCode) {
+			codeMsg = fmt.Sprintf("and enter the code %s to authenticate.", userCode)
+		}
+	}
+
+	err := open.Run(verificationURIComplete)
+	cmd.Printf("Please do the SSO login in your browser. \n" +
+		"If your browser didn't open automatically, use this URL to log in:\n\n" +
+		" " + verificationURIComplete + " " + codeMsg + " \n\n")
+	if err != nil {
+		cmd.Printf("Alternatively, you may want to use a setup key, see:\n\n https://www.netbird.io/docs/overview/setup-keys\n")
+	}
+}

client/cmd/login_test.go

@@ -0,0 +1,53 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/util"
+)
+
+func TestLogin(t *testing.T) {
+	mgmAddr := startTestingServices(t)
+
+	tempDir := t.TempDir()
+	confPath := tempDir + "/config.json"
+	mgmtURL := fmt.Sprintf("http://%s", mgmAddr)
+	rootCmd.SetArgs([]string{
+		"login",
+		"--config",
+		confPath,
+		"--log-file",
+		"console",
+		"--setup-key",
+		strings.ToUpper("a2c8e62b-38f5-4553-b31e-dd66c696cebb"),
+		"--management-url",
+		mgmtURL,
+	})
+	err := rootCmd.Execute()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// validate generated config
+	actualConf := &internal.Config{}
+	_, err = util.ReadJson(confPath, actualConf)
+	if err != nil {
+		t.Errorf("expected proper config file written, got broken %v", err)
+	}
+
+	if actualConf.ManagementURL.String() != mgmtURL {
+		t.Errorf("expected management URL %s got %s", mgmtURL, actualConf.ManagementURL.String())
+	}
+
+	if actualConf.WgIface != iface.WgInterfaceDefault {
+		t.Errorf("expected WgIfaceName %s got %s", iface.WgInterfaceDefault, actualConf.WgIface)
+	}
+
+	if len(actualConf.PrivateKey) == 0 {
+		t.Errorf("expected non empty Private key, got empty")
+	}
+}

client/cmd/root.go

@@ -0,0 +1,310 @@
+package cmd
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"io/fs"
+	"os"
+	"os/signal"
+	"path"
+	"runtime"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"github.com/spf13/pflag"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+
+	"github.com/netbirdio/netbird/client/internal"
+)
+
+const (
+	externalIPMapFlag  = "external-ip-map"
+	dnsResolverAddress = "dns-resolver-address"
+)
+
+var (
+	configPath              string
+	defaultConfigPathDir    string
+	defaultConfigPath       string
+	oldDefaultConfigPathDir string
+	oldDefaultConfigPath    string
+	logLevel                string
+	defaultLogFileDir       string
+	defaultLogFile          string
+	oldDefaultLogFileDir    string
+	oldDefaultLogFile       string
+	logFile                 string
+	daemonAddr              string
+	managementURL           string
+	adminURL                string
+	setupKey                string
+	hostName                string
+	preSharedKey            string
+	natExternalIPs          []string
+	customDNSAddress        string
+	rootCmd                 = &cobra.Command{
+		Use:          "netbird",
+		Short:        "",
+		Long:         "",
+		SilenceUsage: true,
+	}
+)
+
+// Execute executes the root command.
+func Execute() error {
+	return rootCmd.Execute()
+}
+
+func init() {
+	defaultConfigPathDir = "/etc/netbird/"
+	defaultLogFileDir = "/var/log/netbird/"
+
+	oldDefaultConfigPathDir = "/etc/wiretrustee/"
+	oldDefaultLogFileDir = "/var/log/wiretrustee/"
+
+	if runtime.GOOS == "windows" {
+		defaultConfigPathDir = os.Getenv("PROGRAMDATA") + "\\Netbird\\"
+		defaultLogFileDir = os.Getenv("PROGRAMDATA") + "\\Netbird\\"
+
+		oldDefaultConfigPathDir = os.Getenv("PROGRAMDATA") + "\\Wiretrustee\\"
+		oldDefaultLogFileDir = os.Getenv("PROGRAMDATA") + "\\Wiretrustee\\"
+	}
+
+	defaultConfigPath = defaultConfigPathDir + "config.json"
+	defaultLogFile = defaultLogFileDir + "client.log"
+
+	oldDefaultConfigPath = oldDefaultConfigPathDir + "config.json"
+	oldDefaultLogFile = oldDefaultLogFileDir + "client.log"
+
+	defaultDaemonAddr := "unix:///var/run/netbird.sock"
+	if runtime.GOOS == "windows" {
+		defaultDaemonAddr = "tcp://127.0.0.1:41731"
+	}
+	rootCmd.PersistentFlags().StringVar(&daemonAddr, "daemon-addr", defaultDaemonAddr, "Daemon service address to serve CLI requests [unix|tcp]://[path|host:port]")
+	rootCmd.PersistentFlags().StringVarP(&managementURL, "management-url", "m", "", fmt.Sprintf("Management Service URL [http|https]://[host]:[port] (default \"%s\")", internal.DefaultManagementURL))
+	rootCmd.PersistentFlags().StringVar(&adminURL, "admin-url", "", fmt.Sprintf("Admin Panel URL [http|https]://[host]:[port] (default \"%s\")", internal.DefaultAdminURL))
+	rootCmd.PersistentFlags().StringVarP(&configPath, "config", "c", defaultConfigPath, "Netbird config file location")
+	rootCmd.PersistentFlags().StringVarP(&logLevel, "log-level", "l", "info", "sets Netbird log level")
+	rootCmd.PersistentFlags().StringVar(&logFile, "log-file", defaultLogFile, "sets Netbird log path. If console is specified the the log will be output to stdout")
+	rootCmd.PersistentFlags().StringVarP(&setupKey, "setup-key", "k", "", "Setup key obtained from the Management Service Dashboard (used to register peer)")
+	rootCmd.PersistentFlags().StringVar(&preSharedKey, "preshared-key", "", "Sets Wireguard PreSharedKey property. If set, then only peers that have the same key can communicate.")
+	rootCmd.PersistentFlags().StringVarP(&hostName, "hostname", "n", "", "Sets a custom hostname for the device")
+	rootCmd.AddCommand(serviceCmd)
+	rootCmd.AddCommand(upCmd)
+	rootCmd.AddCommand(downCmd)
+	rootCmd.AddCommand(statusCmd)
+	rootCmd.AddCommand(loginCmd)
+	rootCmd.AddCommand(versionCmd)
+	rootCmd.AddCommand(sshCmd)
+	serviceCmd.AddCommand(runCmd, startCmd, stopCmd, restartCmd) // service control commands are subcommands of service
+	serviceCmd.AddCommand(installCmd, uninstallCmd)              // service installer commands are subcommands of service
+	upCmd.PersistentFlags().StringSliceVar(&natExternalIPs, externalIPMapFlag, nil,
+		`Sets external IPs maps between local addresses and interfaces.`+
+			`You can specify a comma-separated list with a single IP and IP/IP or IP/Interface Name. `+
+			`An empty string "" clears the previous configuration. `+
+			`E.g. --external-ip-map 12.34.56.78/10.0.0.1 or --external-ip-map 12.34.56.200,12.34.56.78/10.0.0.1,12.34.56.80/eth1 `+
+			`or --external-ip-map ""`,
+	)
+	upCmd.PersistentFlags().StringVar(&customDNSAddress, dnsResolverAddress, "",
+		`Sets a custom address for NetBird's local DNS resolver. `+
+			`If set, the agent won't attempt to discover the best ip and port to listen on. `+
+			`An empty string "" clears the previous configuration. `+
+			`E.g. --dns-resolver-address 127.0.0.1:5053 or --dns-resolver-address ""`,
+	)
+}
+
+// SetupCloseHandler handles SIGTERM signal and exits with success
+func SetupCloseHandler(ctx context.Context, cancel context.CancelFunc) {
+	termCh := make(chan os.Signal, 1)
+	signal.Notify(termCh, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
+	go func() {
+		done := ctx.Done()
+		select {
+		case <-done:
+		case <-termCh:
+		}
+
+		log.Info("shutdown signal received")
+		cancel()
+	}()
+}
+
+// SetFlagsFromEnvVars reads and updates flag values from environment variables with prefix WT_
+func SetFlagsFromEnvVars(cmd *cobra.Command) {
+	flags := cmd.PersistentFlags()
+	flags.VisitAll(func(f *pflag.Flag) {
+		oldEnvVar := FlagNameToEnvVar(f.Name, "WT_")
+
+		if value, present := os.LookupEnv(oldEnvVar); present {
+			err := flags.Set(f.Name, value)
+			if err != nil {
+				log.Infof("unable to configure flag %s using variable %s, err: %v", f.Name, oldEnvVar, err)
+			}
+		}
+
+		newEnvVar := FlagNameToEnvVar(f.Name, "NB_")
+
+		if value, present := os.LookupEnv(newEnvVar); present {
+			err := flags.Set(f.Name, value)
+			if err != nil {
+				log.Infof("unable to configure flag %s using variable %s, err: %v", f.Name, newEnvVar, err)
+			}
+		}
+	})
+}
+
+// FlagNameToEnvVar converts flag name to environment var name adding a prefix,
+// replacing dashes and making all uppercase (e.g. setup-keys is converted to NB_SETUP_KEYS according to the input prefix)
+func FlagNameToEnvVar(cmdFlag string, prefix string) string {
+	parsed := strings.ReplaceAll(cmdFlag, "-", "_")
+	upper := strings.ToUpper(parsed)
+	return prefix + upper
+}
+
+// DialClientGRPCServer returns client connection to the dameno server.
+func DialClientGRPCServer(ctx context.Context, addr string) (*grpc.ClientConn, error) {
+	ctx, cancel := context.WithTimeout(ctx, time.Second*3)
+	defer cancel()
+
+	return grpc.DialContext(
+		ctx,
+		strings.TrimPrefix(addr, "tcp://"),
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithBlock(),
+	)
+}
+
+// WithBackOff execute function in backoff cycle.
+func WithBackOff(bf func() error) error {
+	return backoff.RetryNotify(bf, CLIBackOffSettings, func(err error, duration time.Duration) {
+		log.Warnf("retrying Login to the Management service in %v due to error %v", duration, err)
+	})
+}
+
+// CLIBackOffSettings is default backoff settings for CLI commands.
+var CLIBackOffSettings = &backoff.ExponentialBackOff{
+	InitialInterval:     time.Second,
+	RandomizationFactor: backoff.DefaultRandomizationFactor,
+	Multiplier:          backoff.DefaultMultiplier,
+	MaxInterval:         10 * time.Second,
+	MaxElapsedTime:      30 * time.Second,
+	Stop:                backoff.Stop,
+	Clock:               backoff.SystemClock,
+}
+
+func handleRebrand(cmd *cobra.Command) error {
+	var err error
+	if logFile == defaultLogFile {
+		if migrateToNetbird(oldDefaultLogFile, defaultLogFile) {
+			cmd.Printf("will copy Log dir %s and its content to %s\n", oldDefaultLogFileDir, defaultLogFileDir)
+			err = cpDir(oldDefaultLogFileDir, defaultLogFileDir)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	if configPath == defaultConfigPath {
+		if migrateToNetbird(oldDefaultConfigPath, defaultConfigPath) {
+			cmd.Printf("will copy Config dir %s and its content to %s\n", oldDefaultConfigPathDir, defaultConfigPathDir)
+			err = cpDir(oldDefaultConfigPathDir, defaultConfigPathDir)
+			if err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func cpFile(src, dst string) error {
+	var err error
+	var srcfd *os.File
+	var dstfd *os.File
+	var srcinfo os.FileInfo
+
+	if srcfd, err = os.Open(src); err != nil {
+		return err
+	}
+	defer srcfd.Close()
+
+	if dstfd, err = os.Create(dst); err != nil {
+		return err
+	}
+	defer dstfd.Close()
+
+	if _, err = io.Copy(dstfd, srcfd); err != nil {
+		return err
+	}
+	if srcinfo, err = os.Stat(src); err != nil {
+		return err
+	}
+	return os.Chmod(dst, srcinfo.Mode())
+}
+
+func copySymLink(source, dest string) error {
+	link, err := os.Readlink(source)
+	if err != nil {
+		return err
+	}
+	return os.Symlink(link, dest)
+}
+
+func cpDir(src string, dst string) error {
+	var err error
+	var fds []os.DirEntry
+	var srcinfo os.FileInfo
+
+	if srcinfo, err = os.Stat(src); err != nil {
+		return err
+	}
+
+	if err = os.MkdirAll(dst, srcinfo.Mode()); err != nil {
+		return err
+	}
+
+	if fds, err = os.ReadDir(src); err != nil {
+		return err
+	}
+	for _, fd := range fds {
+		srcfp := path.Join(src, fd.Name())
+		dstfp := path.Join(dst, fd.Name())
+
+		fileInfo, err := os.Stat(srcfp)
+		if err != nil {
+			return fmt.Errorf("fouldn't get fileInfo; %v", err)
+		}
+
+		switch fileInfo.Mode() & os.ModeType {
+		case os.ModeSymlink:
+			if err = copySymLink(srcfp, dstfp); err != nil {
+				return fmt.Errorf("failed to copy from %s to %s; %v", srcfp, dstfp, err)
+			}
+		case os.ModeDir:
+			if err = cpDir(srcfp, dstfp); err != nil {
+				return fmt.Errorf("failed to copy from %s to %s; %v", srcfp, dstfp, err)
+			}
+		default:
+			if err = cpFile(srcfp, dstfp); err != nil {
+				return fmt.Errorf("failed to copy from %s to %s; %v", srcfp, dstfp, err)
+			}
+		}
+	}
+	return nil
+}
+
+func migrateToNetbird(oldPath, newPath string) bool {
+	_, errOld := os.Stat(oldPath)
+	_, errNew := os.Stat(newPath)
+
+	if errors.Is(errOld, fs.ErrNotExist) || errNew == nil {
+		return false
+	}
+
+	return true
+}

client/cmd/root_test.go

@@ -0,0 +1,36 @@
+package cmd
+
+import (
+	"fmt"
+	"io"
+	"testing"
+)
+
+func TestInitCommands(t *testing.T) {
+	helpFlag := "-h"
+	commandArgs := [][]string{{"root", helpFlag}}
+	for _, command := range rootCmd.Commands() {
+		commandArgs = append(commandArgs, []string{command.Name(), command.Name(), helpFlag})
+		for _, subcommand := range command.Commands() {
+			commandArgs = append(commandArgs, []string{command.Name() + " " + subcommand.Name(), command.Name(), subcommand.Name(), helpFlag})
+		}
+	}
+
+	for _, args := range commandArgs {
+		t.Run(fmt.Sprintf("Testing Command %s", args[0]), func(t *testing.T) {
+			defer func() {
+				err := recover()
+				if err != nil {
+					t.Fatalf("got an panic error while running the command: %s -h. Error: %s", args[0], err)
+				}
+			}()
+
+			rootCmd.SetArgs(args[1:])
+			rootCmd.SetOut(io.Discard)
+			if err := rootCmd.Execute(); err != nil {
+				t.Errorf("expected no error while running %s command, got %v", args[0], err)
+				return
+			}
+		})
+	}
+}

client/cmd/service.go

@@ -0,0 +1,51 @@
+package cmd
+
+import (
+	"context"
+	"runtime"
+
+	"github.com/kardianos/service"
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc"
+
+	"github.com/netbirdio/netbird/client/internal"
+)
+
+type program struct {
+	ctx    context.Context
+	cancel context.CancelFunc
+	serv   *grpc.Server
+}
+
+func newProgram(ctx context.Context, cancel context.CancelFunc) *program {
+	ctx = internal.CtxInitState(ctx)
+	return &program{ctx: ctx, cancel: cancel}
+}
+
+func newSVCConfig() *service.Config {
+	name := "netbird"
+	if runtime.GOOS == "windows" {
+		name = "Netbird"
+	}
+	return &service.Config{
+		Name:        name,
+		DisplayName: "Netbird",
+		Description: "A WireGuard-based mesh network that connects your devices into a single private network.",
+		Option:      make(service.KeyValue),
+	}
+}
+
+func newSVC(prg *program, conf *service.Config) (service.Service, error) {
+	s, err := service.New(prg, conf)
+	if err != nil {
+		log.Fatal(err)
+		return nil, err
+	}
+	return s, nil
+}
+
+var serviceCmd = &cobra.Command{
+	Use:   "service",
+	Short: "manages Netbird service",
+}

client/cmd/service_controller.go

@@ -0,0 +1,216 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/kardianos/service"
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/proto"
+	"github.com/netbirdio/netbird/client/server"
+	"github.com/netbirdio/netbird/util"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc"
+)
+
+func (p *program) Start(svc service.Service) error {
+	// Start should not block. Do the actual work async.
+	log.Info("starting Netbird service") //nolint
+	// in any case, even if configuration does not exists we run daemon to serve CLI gRPC API.
+	p.serv = grpc.NewServer()
+
+	split := strings.Split(daemonAddr, "://")
+	switch split[0] {
+	case "unix":
+		// cleanup failed close
+		stat, err := os.Stat(split[1])
+		if err == nil && !stat.IsDir() {
+			if err := os.Remove(split[1]); err != nil {
+				log.Debugf("remove socket file: %v", err)
+			}
+		}
+	case "tcp":
+	default:
+		return fmt.Errorf("unsupported daemon address protocol: %v", split[0])
+	}
+
+	listen, err := net.Listen(split[0], split[1])
+	if err != nil {
+		return fmt.Errorf("failed to listen daemon interface: %w", err)
+	}
+	go func() {
+		defer listen.Close()
+
+		if split[0] == "unix" {
+			err = os.Chmod(split[1], 0666)
+			if err != nil {
+				log.Errorf("failed setting daemon permissions: %v", split[1])
+				return
+			}
+		}
+
+		serverInstance := server.New(p.ctx, configPath, logFile)
+		if err := serverInstance.Start(); err != nil {
+			log.Fatalf("failed to start daemon: %v", err)
+		}
+		proto.RegisterDaemonServiceServer(p.serv, serverInstance)
+
+		log.Printf("started daemon server: %v", split[1])
+		if err := p.serv.Serve(listen); err != nil {
+			log.Errorf("failed to serve daemon requests: %v", err)
+		}
+	}()
+	return nil
+}
+
+func (p *program) Stop(srv service.Service) error {
+	p.cancel()
+
+	if p.serv != nil {
+		p.serv.Stop()
+	}
+
+	time.Sleep(time.Second * 2)
+	log.Info("stopped Netbird service") //nolint
+	return nil
+}
+
+var runCmd = &cobra.Command{
+	Use:   "run",
+	Short: "runs Netbird as service",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := handleRebrand(cmd)
+		if err != nil {
+			return err
+		}
+
+		err = util.InitLog(logLevel, logFile)
+		if err != nil {
+			return fmt.Errorf("failed initializing log %v", err)
+		}
+
+		ctx, cancel := context.WithCancel(cmd.Context())
+		SetupCloseHandler(ctx, cancel)
+
+		s, err := newSVC(newProgram(ctx, cancel), newSVCConfig())
+		if err != nil {
+			return err
+		}
+		err = s.Run()
+		if err != nil {
+			return err
+		}
+		cmd.Printf("Netbird service is running")
+		return nil
+	},
+}
+
+var startCmd = &cobra.Command{
+	Use:   "start",
+	Short: "starts Netbird service",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := handleRebrand(cmd)
+		if err != nil {
+			return err
+		}
+
+		err = util.InitLog(logLevel, logFile)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithCancel(cmd.Context())
+
+		s, err := newSVC(newProgram(ctx, cancel), newSVCConfig())
+		if err != nil {
+			cmd.PrintErrln(err)
+			return err
+		}
+		err = s.Start()
+		if err != nil {
+			cmd.PrintErrln(err)
+			return err
+		}
+		cmd.Println("Netbird service has been started")
+		return nil
+	},
+}
+
+var stopCmd = &cobra.Command{
+	Use:   "stop",
+	Short: "stops Netbird service",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := handleRebrand(cmd)
+		if err != nil {
+			return err
+		}
+
+		err = util.InitLog(logLevel, logFile)
+		if err != nil {
+			return fmt.Errorf("failed initializing log %v", err)
+		}
+
+		ctx, cancel := context.WithCancel(cmd.Context())
+
+		s, err := newSVC(newProgram(ctx, cancel), newSVCConfig())
+		if err != nil {
+			return err
+		}
+		err = s.Stop()
+		if err != nil {
+			return err
+		}
+		cmd.Println("Netbird service has been stopped")
+		return nil
+	},
+}
+
+var restartCmd = &cobra.Command{
+	Use:   "restart",
+	Short: "restarts Netbird service",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := handleRebrand(cmd)
+		if err != nil {
+			return err
+		}
+
+		err = util.InitLog(logLevel, logFile)
+		if err != nil {
+			return fmt.Errorf("failed initializing log %v", err)
+		}
+
+		ctx, cancel := context.WithCancel(cmd.Context())
+
+		s, err := newSVC(newProgram(ctx, cancel), newSVCConfig())
+		if err != nil {
+			return err
+		}
+		err = s.Restart()
+		if err != nil {
+			return err
+		}
+		cmd.Println("Netbird service has been restarted")
+		return nil
+	},
+}

client/cmd/service_installer.go

@@ -0,0 +1,112 @@
+package cmd
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"github.com/spf13/cobra"
+)
+
+var installCmd = &cobra.Command{
+	Use:   "install",
+	Short: "installs Netbird service",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := handleRebrand(cmd)
+		if err != nil {
+			return err
+		}
+
+		svcConfig := newSVCConfig()
+
+		svcConfig.Arguments = []string{
+			"service",
+			"run",
+			"--config",
+			configPath,
+			"--log-level",
+			logLevel,
+		}
+
+		if managementURL != "" {
+			svcConfig.Arguments = append(svcConfig.Arguments, "--management-url", managementURL)
+		}
+
+		if logFile != "console" {
+			svcConfig.Arguments = append(svcConfig.Arguments, "--log-file", logFile)
+		}
+
+		if runtime.GOOS == "linux" {
+			// Respected only by systemd systems
+			svcConfig.Dependencies = []string{"After=network.target syslog.target"}
+
+			if logFile != "console" {
+				setStdLogPath := true
+				dir := filepath.Dir(logFile)
+
+				_, err := os.Stat(dir)
+				if err != nil {
+					err = os.MkdirAll(dir, 0750)
+					if err != nil {
+						setStdLogPath = false
+					}
+				}
+
+				if setStdLogPath {
+					svcConfig.Option["LogOutput"] = true
+					svcConfig.Option["LogDirectory"] = dir
+				}
+			}
+		}
+
+		ctx, cancel := context.WithCancel(cmd.Context())
+
+		s, err := newSVC(newProgram(ctx, cancel), svcConfig)
+		if err != nil {
+			cmd.PrintErrln(err)
+			return err
+		}
+
+		err = s.Install()
+		if err != nil {
+			cmd.PrintErrln(err)
+			return err
+		}
+		cmd.Println("Netbird service has been installed")
+		return nil
+	},
+}
+
+var uninstallCmd = &cobra.Command{
+	Use:   "uninstall",
+	Short: "uninstalls Netbird service from system",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := handleRebrand(cmd)
+		if err != nil {
+			return err
+		}
+
+		ctx, cancel := context.WithCancel(cmd.Context())
+
+		s, err := newSVC(newProgram(ctx, cancel), newSVCConfig())
+		if err != nil {
+			return err
+		}
+
+		err = s.Uninstall()
+		if err != nil {
+			return err
+		}
+		cmd.Println("Netbird has been uninstalled")
+		return nil
+	},
+}

client/cmd/ssh.go

@@ -0,0 +1,119 @@
+package cmd
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+
+	"github.com/netbirdio/netbird/client/internal"
+	nbssh "github.com/netbirdio/netbird/client/ssh"
+	"github.com/netbirdio/netbird/util"
+)
+
+var (
+	port int
+	user = "root"
+	host string
+)
+
+var sshCmd = &cobra.Command{
+	Use: "ssh",
+	Args: func(cmd *cobra.Command, args []string) error {
+		if len(args) < 1 {
+			return errors.New("requires a host argument")
+		}
+
+		split := strings.Split(args[0], "@")
+		if len(split) == 2 {
+			user = split[0]
+			host = split[1]
+		} else {
+			host = args[0]
+		}
+
+		return nil
+	},
+	Short: "connect to a remote SSH server",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		SetFlagsFromEnvVars(rootCmd)
+		SetFlagsFromEnvVars(cmd)
+
+		cmd.SetOut(cmd.OutOrStdout())
+
+		err := util.InitLog(logLevel, "console")
+		if err != nil {
+			return fmt.Errorf("failed initializing log %v", err)
+		}
+
+		if !util.IsAdmin() {
+			cmd.Printf("error: you must have Administrator privileges to run this command\n")
+			return nil
+		}
+
+		ctx := internal.CtxInitState(cmd.Context())
+
+		config, err := internal.UpdateConfig(internal.ConfigInput{
+			ConfigPath: configPath,
+		})
+		if err != nil {
+			return err
+		}
+
+		sig := make(chan os.Signal, 1)
+		signal.Notify(sig, syscall.SIGTERM, syscall.SIGINT)
+		sshctx, cancel := context.WithCancel(ctx)
+
+		go func() {
+			// blocking
+			if err := runSSH(sshctx, host, []byte(config.SSHKey), cmd); err != nil {
+				log.Debug(err)
+				os.Exit(1)
+			}
+			cancel()
+		}()
+
+		select {
+		case <-sig:
+			cancel()
+		case <-sshctx.Done():
+		}
+
+		return nil
+	},
+}
+
+func runSSH(ctx context.Context, addr string, pemKey []byte, cmd *cobra.Command) error {
+	c, err := nbssh.DialWithKey(fmt.Sprintf("%s:%d", addr, port), user, pemKey)
+	if err != nil {
+		cmd.Printf("Error: %v\n", err)
+		cmd.Printf("Couldn't connect. Please check the connection status or if the ssh server is enabled on the other peer" +
+			"You can verify the connection by running:\n\n" +
+			" netbird status\n\n")
+		return err
+	}
+	go func() {
+		<-ctx.Done()
+		err = c.Close()
+		if err != nil {
+			return
+		}
+	}()
+
+	err = c.OpenTerminal()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func init() {
+	sshCmd.PersistentFlags().IntVarP(&port, "port", "p", nbssh.DefaultSSHPort, "Sets remote SSH port. Defaults to "+fmt.Sprint(nbssh.DefaultSSHPort))
+}

client/cmd/status.go

@@ -0,0 +1,435 @@
+package cmd
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net"
+	"net/netip"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+	"gopkg.in/yaml.v3"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/internal/peer"
+	"github.com/netbirdio/netbird/client/proto"
+	"github.com/netbirdio/netbird/util"
+	"github.com/netbirdio/netbird/version"
+)
+
+type peerStateDetailOutput struct {
+	FQDN             string           `json:"fqdn" yaml:"fqdn"`
+	IP               string           `json:"netbirdIp" yaml:"netbirdIp"`
+	PubKey           string           `json:"publicKey" yaml:"publicKey"`
+	Status           string           `json:"status" yaml:"status"`
+	LastStatusUpdate time.Time        `json:"lastStatusUpdate" yaml:"lastStatusUpdate"`
+	ConnType         string           `json:"connectionType" yaml:"connectionType"`
+	Direct           bool             `json:"direct" yaml:"direct"`
+	IceCandidateType iceCandidateType `json:"iceCandidateType" yaml:"iceCandidateType"`
+}
+
+type peersStateOutput struct {
+	Total     int                     `json:"total" yaml:"total"`
+	Connected int                     `json:"connected" yaml:"connected"`
+	Details   []peerStateDetailOutput `json:"details" yaml:"details"`
+}
+
+type signalStateOutput struct {
+	URL       string `json:"url" yaml:"url"`
+	Connected bool   `json:"connected" yaml:"connected"`
+}
+
+type managementStateOutput struct {
+	URL       string `json:"url" yaml:"url"`
+	Connected bool   `json:"connected" yaml:"connected"`
+}
+
+type iceCandidateType struct {
+	Local  string `json:"local" yaml:"local"`
+	Remote string `json:"remote" yaml:"remote"`
+}
+
+type statusOutputOverview struct {
+	Peers           peersStateOutput      `json:"peers" yaml:"peers"`
+	CliVersion      string                `json:"cliVersion" yaml:"cliVersion"`
+	DaemonVersion   string                `json:"daemonVersion" yaml:"daemonVersion"`
+	ManagementState managementStateOutput `json:"management" yaml:"management"`
+	SignalState     signalStateOutput     `json:"signal" yaml:"signal"`
+	IP              string                `json:"netbirdIp" yaml:"netbirdIp"`
+	PubKey          string                `json:"publicKey" yaml:"publicKey"`
+	KernelInterface bool                  `json:"usesKernelInterface" yaml:"usesKernelInterface"`
+	FQDN            string                `json:"fqdn" yaml:"fqdn"`
+}
+
+var (
+	detailFlag   bool
+	ipv4Flag     bool
+	jsonFlag     bool
+	yamlFlag     bool
+	ipsFilter    []string
+	statusFilter string
+	ipsFilterMap map[string]struct{}
+)
+
+var statusCmd = &cobra.Command{
+	Use:   "status",
+	Short: "status of the Netbird Service",
+	RunE:  statusFunc,
+}
+
+func init() {
+	ipsFilterMap = make(map[string]struct{})
+	statusCmd.PersistentFlags().BoolVarP(&detailFlag, "detail", "d", false, "display detailed status information in human-readable format")
+	statusCmd.PersistentFlags().BoolVar(&jsonFlag, "json", false, "display detailed status information in json format")
+	statusCmd.PersistentFlags().BoolVar(&yamlFlag, "yaml", false, "display detailed status information in yaml format")
+	statusCmd.PersistentFlags().BoolVar(&ipv4Flag, "ipv4", false, "display only NetBird IPv4 of this peer, e.g., --ipv4 will output 100.64.0.33")
+	statusCmd.MarkFlagsMutuallyExclusive("detail", "json", "yaml", "ipv4")
+	statusCmd.PersistentFlags().StringSliceVar(&ipsFilter, "filter-by-ips", []string{}, "filters the detailed output by a list of one or more IPs, e.g., --filter-by-ips 100.64.0.100,100.64.0.200")
+	statusCmd.PersistentFlags().StringVar(&statusFilter, "filter-by-status", "", "filters the detailed output by connection status(connected|disconnected), e.g., --filter-by-status connected")
+}
+
+func statusFunc(cmd *cobra.Command, args []string) error {
+	SetFlagsFromEnvVars(rootCmd)
+
+	cmd.SetOut(cmd.OutOrStdout())
+
+	err := parseFilters()
+	if err != nil {
+		return err
+	}
+
+	err = util.InitLog(logLevel, "console")
+	if err != nil {
+		return fmt.Errorf("failed initializing log %v", err)
+	}
+
+	ctx := internal.CtxInitState(context.Background())
+
+	resp, _ := getStatus(ctx, cmd)
+	if err != nil {
+		return nil
+	}
+
+	if resp.GetStatus() == string(internal.StatusNeedsLogin) || resp.GetStatus() == string(internal.StatusLoginFailed) {
+		cmd.Printf("Daemon status: %s\n\n"+
+			"Run UP command to log in with SSO (interactive login):\n\n"+
+			" netbird up \n\n"+
+			"If you are running a self-hosted version and no SSO provider has been configured in your Management Server,\n"+
+			"you can use a setup-key:\n\n netbird up --management-url <YOUR_MANAGEMENT_URL> --setup-key <YOUR_SETUP_KEY>\n\n"+
+			"More info: https://www.netbird.io/docs/overview/setup-keys\n\n",
+			resp.GetStatus(),
+		)
+		return nil
+	}
+
+	if ipv4Flag {
+		cmd.Print(parseInterfaceIP(resp.GetFullStatus().GetLocalPeerState().GetIP()))
+		return nil
+	}
+
+	outputInformationHolder := convertToStatusOutputOverview(resp)
+
+	statusOutputString := ""
+	switch {
+	case detailFlag:
+		statusOutputString = parseToFullDetailSummary(outputInformationHolder)
+	case jsonFlag:
+		statusOutputString, err = parseToJSON(outputInformationHolder)
+	case yamlFlag:
+		statusOutputString, err = parseToYAML(outputInformationHolder)
+	default:
+		statusOutputString = parseGeneralSummary(outputInformationHolder, false)
+	}
+
+	if err != nil {
+		return err
+	}
+
+	cmd.Print(statusOutputString)
+
+	return nil
+}
+
+func getStatus(ctx context.Context, cmd *cobra.Command) (*proto.StatusResponse, error) {
+	conn, err := DialClientGRPCServer(ctx, daemonAddr)
+	if err != nil {
+		return nil, fmt.Errorf("failed to connect to daemon error: %v\n"+
+			"If the daemon is not running please run: "+
+			"\nnetbird service install \nnetbird service start\n", err)
+	}
+	defer conn.Close()
+
+	resp, err := proto.NewDaemonServiceClient(conn).Status(cmd.Context(), &proto.StatusRequest{GetFullPeerStatus: true})
+	if err != nil {
+		return nil, fmt.Errorf("status failed: %v", status.Convert(err).Message())
+	}
+
+	return resp, nil
+}
+
+func parseFilters() error {
+	switch strings.ToLower(statusFilter) {
+	case "", "disconnected", "connected":
+	default:
+		return fmt.Errorf("wrong status filter, should be one of connected|disconnected, got: %s", statusFilter)
+	}
+
+	if len(ipsFilter) > 0 {
+		for _, addr := range ipsFilter {
+			_, err := netip.ParseAddr(addr)
+			if err != nil {
+				return fmt.Errorf("got an invalid IP address in the filter: address %s, error %s", addr, err)
+			}
+			ipsFilterMap[addr] = struct{}{}
+		}
+	}
+	return nil
+}
+
+func convertToStatusOutputOverview(resp *proto.StatusResponse) statusOutputOverview {
+	pbFullStatus := resp.GetFullStatus()
+
+	managementState := pbFullStatus.GetManagementState()
+	managementOverview := managementStateOutput{
+		URL:       managementState.GetURL(),
+		Connected: managementState.GetConnected(),
+	}
+
+	signalState := pbFullStatus.GetSignalState()
+	signalOverview := signalStateOutput{
+		URL:       signalState.GetURL(),
+		Connected: signalState.GetConnected(),
+	}
+
+	peersOverview := mapPeers(resp.GetFullStatus().GetPeers())
+
+	overview := statusOutputOverview{
+		Peers:           peersOverview,
+		CliVersion:      version.NetbirdVersion(),
+		DaemonVersion:   resp.GetDaemonVersion(),
+		ManagementState: managementOverview,
+		SignalState:     signalOverview,
+		IP:              pbFullStatus.GetLocalPeerState().GetIP(),
+		PubKey:          pbFullStatus.GetLocalPeerState().GetPubKey(),
+		KernelInterface: pbFullStatus.GetLocalPeerState().GetKernelInterface(),
+		FQDN:            pbFullStatus.GetLocalPeerState().GetFqdn(),
+	}
+
+	return overview
+}
+
+func mapPeers(peers []*proto.PeerState) peersStateOutput {
+	var peersStateDetail []peerStateDetailOutput
+	localICE := ""
+	remoteICE := ""
+	connType := ""
+	peersConnected := 0
+	for _, pbPeerState := range peers {
+		isPeerConnected := pbPeerState.ConnStatus == peer.StatusConnected.String()
+		if skipDetailByFilters(pbPeerState, isPeerConnected) {
+			continue
+		}
+		if isPeerConnected {
+			peersConnected = peersConnected + 1
+
+			localICE = pbPeerState.GetLocalIceCandidateType()
+			remoteICE = pbPeerState.GetRemoteIceCandidateType()
+			connType = "P2P"
+			if pbPeerState.Relayed {
+				connType = "Relayed"
+			}
+		}
+
+		timeLocal := pbPeerState.GetConnStatusUpdate().AsTime().Local()
+		peerState := peerStateDetailOutput{
+			IP:               pbPeerState.GetIP(),
+			PubKey:           pbPeerState.GetPubKey(),
+			Status:           pbPeerState.GetConnStatus(),
+			LastStatusUpdate: timeLocal,
+			ConnType:         connType,
+			Direct:           pbPeerState.GetDirect(),
+			IceCandidateType: iceCandidateType{
+				Local:  localICE,
+				Remote: remoteICE,
+			},
+			FQDN: pbPeerState.GetFqdn(),
+		}
+
+		peersStateDetail = append(peersStateDetail, peerState)
+	}
+
+	sortPeersByIP(peersStateDetail)
+
+	peersOverview := peersStateOutput{
+		Total:     len(peersStateDetail),
+		Connected: peersConnected,
+		Details:   peersStateDetail,
+	}
+	return peersOverview
+}
+
+func sortPeersByIP(peersStateDetail []peerStateDetailOutput) {
+	if len(peersStateDetail) > 0 {
+		sort.SliceStable(peersStateDetail, func(i, j int) bool {
+			iAddr, _ := netip.ParseAddr(peersStateDetail[i].IP)
+			jAddr, _ := netip.ParseAddr(peersStateDetail[j].IP)
+			return iAddr.Compare(jAddr) == -1
+		})
+	}
+}
+
+func parseInterfaceIP(interfaceIP string) string {
+	ip, _, err := net.ParseCIDR(interfaceIP)
+	if err != nil {
+		return ""
+	}
+	return fmt.Sprintf("%s\n", ip)
+}
+
+func parseToJSON(overview statusOutputOverview) (string, error) {
+	jsonBytes, err := json.Marshal(overview)
+	if err != nil {
+		return "", fmt.Errorf("json marshal failed")
+	}
+	return string(jsonBytes), err
+}
+
+func parseToYAML(overview statusOutputOverview) (string, error) {
+	yamlBytes, err := yaml.Marshal(overview)
+	if err != nil {
+		return "", fmt.Errorf("yaml marshal failed")
+	}
+	return string(yamlBytes), nil
+}
+
+func parseGeneralSummary(overview statusOutputOverview, showURL bool) string {
+
+	managementConnString := "Disconnected"
+	if overview.ManagementState.Connected {
+		managementConnString = "Connected"
+		if showURL {
+			managementConnString = fmt.Sprintf("%s to %s", managementConnString, overview.ManagementState.URL)
+		}
+	}
+
+	signalConnString := "Disconnected"
+	if overview.SignalState.Connected {
+		signalConnString = "Connected"
+		if showURL {
+			signalConnString = fmt.Sprintf("%s to %s", signalConnString, overview.SignalState.URL)
+		}
+	}
+
+	interfaceTypeString := "Userspace"
+	interfaceIP := overview.IP
+	if overview.KernelInterface {
+		interfaceTypeString = "Kernel"
+	} else if overview.IP == "" {
+		interfaceTypeString = "N/A"
+		interfaceIP = "N/A"
+	}
+
+	peersCountString := fmt.Sprintf("%d/%d Connected", overview.Peers.Connected, overview.Peers.Total)
+
+	summary := fmt.Sprintf(
+		"Daemon version: %s\n"+
+			"CLI version: %s\n"+
+			"Management: %s\n"+
+			"Signal: %s\n"+
+			"FQDN: %s\n"+
+			"NetBird IP: %s\n"+
+			"Interface type: %s\n"+
+			"Peers count: %s\n",
+		overview.DaemonVersion,
+		version.NetbirdVersion(),
+		managementConnString,
+		signalConnString,
+		overview.FQDN,
+		interfaceIP,
+		interfaceTypeString,
+		peersCountString,
+	)
+	return summary
+}
+
+func parseToFullDetailSummary(overview statusOutputOverview) string {
+	parsedPeersString := parsePeers(overview.Peers)
+	summary := parseGeneralSummary(overview, true)
+
+	return fmt.Sprintf(
+		"Peers detail:"+
+			"%s\n"+
+			"%s",
+		parsedPeersString,
+		summary,
+	)
+}
+
+func parsePeers(peers peersStateOutput) string {
+	var (
+		peersString = ""
+	)
+
+	for _, peerState := range peers.Details {
+
+		localICE := "-"
+		if peerState.IceCandidateType.Local != "" {
+			localICE = peerState.IceCandidateType.Local
+		}
+
+		remoteICE := "-"
+		if peerState.IceCandidateType.Remote != "" {
+			remoteICE = peerState.IceCandidateType.Remote
+		}
+
+		peerString := fmt.Sprintf(
+			"\n %s:\n"+
+				"  NetBird IP: %s\n"+
+				"  Public key: %s\n"+
+				"  Status: %s\n"+
+				"  -- detail --\n"+
+				"  Connection type: %s\n"+
+				"  Direct: %t\n"+
+				"  ICE candidate (Local/Remote): %s/%s\n"+
+				"  Last connection update: %s\n",
+			peerState.FQDN,
+			peerState.IP,
+			peerState.PubKey,
+			peerState.Status,
+			peerState.ConnType,
+			peerState.Direct,
+			localICE,
+			remoteICE,
+			peerState.LastStatusUpdate.Format("2006-01-02 15:04:05"),
+		)
+
+		peersString = peersString + peerString
+	}
+	return peersString
+}
+
+func skipDetailByFilters(peerState *proto.PeerState, isConnected bool) bool {
+	statusEval := false
+	ipEval := false
+
+	if statusFilter != "" {
+		lowerStatusFilter := strings.ToLower(statusFilter)
+		if lowerStatusFilter == "disconnected" && isConnected {
+			statusEval = true
+		} else if lowerStatusFilter == "connected" && !isConnected {
+			statusEval = true
+		}
+	}
+
+	if len(ipsFilter) > 0 {
+		_, ok := ipsFilterMap[peerState.IP]
+		if !ok {
+			ipEval = true
+		}
+	}
+	return statusEval || ipEval
+}

client/cmd/status_test.go

@@ -0,0 +1,310 @@
+package cmd
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"google.golang.org/protobuf/types/known/timestamppb"
+
+	"github.com/netbirdio/netbird/client/proto"
+	"github.com/netbirdio/netbird/version"
+)
+
+func init() {
+	loc, err := time.LoadLocation("UTC")
+	if err != nil {
+		panic(err)
+	}
+
+	time.Local = loc
+}
+
+var resp = &proto.StatusResponse{
+	Status: "Connected",
+	FullStatus: &proto.FullStatus{
+		Peers: []*proto.PeerState{
+			{
+				IP:                     "192.168.178.101",
+				PubKey:                 "Pubkey1",
+				Fqdn:                   "peer-1.awesome-domain.com",
+				ConnStatus:             "Connected",
+				ConnStatusUpdate:       timestamppb.New(time.Date(2001, time.Month(1), 1, 1, 1, 1, 0, time.UTC)),
+				Relayed:                false,
+				Direct:                 true,
+				LocalIceCandidateType:  "",
+				RemoteIceCandidateType: "",
+			},
+			{
+				IP:                     "192.168.178.102",
+				PubKey:                 "Pubkey2",
+				Fqdn:                   "peer-2.awesome-domain.com",
+				ConnStatus:             "Connected",
+				ConnStatusUpdate:       timestamppb.New(time.Date(2002, time.Month(2), 2, 2, 2, 2, 0, time.UTC)),
+				Relayed:                true,
+				Direct:                 false,
+				LocalIceCandidateType:  "relay",
+				RemoteIceCandidateType: "prflx",
+			},
+		},
+		ManagementState: &proto.ManagementState{
+			URL:       "my-awesome-management.com:443",
+			Connected: true,
+		},
+		SignalState: &proto.SignalState{
+			URL:       "my-awesome-signal.com:443",
+			Connected: true,
+		},
+		LocalPeerState: &proto.LocalPeerState{
+			IP:              "192.168.178.100/16",
+			PubKey:          "Some-Pub-Key",
+			KernelInterface: true,
+			Fqdn:            "some-localhost.awesome-domain.com",
+		},
+	},
+	DaemonVersion: "0.14.1",
+}
+
+var overview = statusOutputOverview{
+	Peers: peersStateOutput{
+		Total:     2,
+		Connected: 2,
+		Details: []peerStateDetailOutput{
+			{
+				IP:               "192.168.178.101",
+				PubKey:           "Pubkey1",
+				FQDN:             "peer-1.awesome-domain.com",
+				Status:           "Connected",
+				LastStatusUpdate: time.Date(2001, 1, 1, 1, 1, 1, 0, time.UTC),
+				ConnType:         "P2P",
+				Direct:           true,
+				IceCandidateType: iceCandidateType{
+					Local:  "",
+					Remote: "",
+				},
+			},
+			{
+				IP:               "192.168.178.102",
+				PubKey:           "Pubkey2",
+				FQDN:             "peer-2.awesome-domain.com",
+				Status:           "Connected",
+				LastStatusUpdate: time.Date(2002, 2, 2, 2, 2, 2, 0, time.UTC),
+				ConnType:         "Relayed",
+				Direct:           false,
+				IceCandidateType: iceCandidateType{
+					Local:  "relay",
+					Remote: "prflx",
+				},
+			},
+		},
+	},
+	CliVersion:    version.NetbirdVersion(),
+	DaemonVersion: "0.14.1",
+	ManagementState: managementStateOutput{
+		URL:       "my-awesome-management.com:443",
+		Connected: true,
+	},
+	SignalState: signalStateOutput{
+		URL:       "my-awesome-signal.com:443",
+		Connected: true,
+	},
+	IP:              "192.168.178.100/16",
+	PubKey:          "Some-Pub-Key",
+	KernelInterface: true,
+	FQDN:            "some-localhost.awesome-domain.com",
+}
+
+func TestConversionFromFullStatusToOutputOverview(t *testing.T) {
+	convertedResult := convertToStatusOutputOverview(resp)
+
+	assert.Equal(t, overview, convertedResult)
+}
+
+func TestSortingOfPeers(t *testing.T) {
+	peers := []peerStateDetailOutput{
+		{
+			IP: "192.168.178.104",
+		},
+		{
+			IP: "192.168.178.102",
+		},
+		{
+			IP: "192.168.178.101",
+		},
+		{
+			IP: "192.168.178.105",
+		},
+		{
+			IP: "192.168.178.103",
+		},
+	}
+
+	sortPeersByIP(peers)
+
+	assert.Equal(t, peers[3].IP, "192.168.178.104")
+}
+
+func TestParsingToJSON(t *testing.T) {
+	json, _ := parseToJSON(overview)
+
+	//@formatter:off
+	expectedJSON := "{\"" +
+		"peers\":" +
+		"{" +
+		"\"total\":2," +
+		"\"connected\":2," +
+		"\"details\":" +
+		"[" +
+		"{" +
+		"\"fqdn\":\"peer-1.awesome-domain.com\"," +
+		"\"netbirdIp\":\"192.168.178.101\"," +
+		"\"publicKey\":\"Pubkey1\"," +
+		"\"status\":\"Connected\"," +
+		"\"lastStatusUpdate\":\"2001-01-01T01:01:01Z\"," +
+		"\"connectionType\":\"P2P\"," +
+		"\"direct\":true," +
+		"\"iceCandidateType\":" +
+		"{" +
+		"\"local\":\"\"," +
+		"\"remote\":\"\"" +
+		"}" +
+		"}," +
+		"{" +
+		"\"fqdn\":\"peer-2.awesome-domain.com\"," +
+		"\"netbirdIp\":\"192.168.178.102\"," +
+		"\"publicKey\":\"Pubkey2\"," +
+		"\"status\":\"Connected\"," +
+		"\"lastStatusUpdate\":\"2002-02-02T02:02:02Z\"," +
+		"\"connectionType\":\"Relayed\"," +
+		"\"direct\":false," +
+		"\"iceCandidateType\":" +
+		"{" +
+		"\"local\":\"relay\"," +
+		"\"remote\":\"prflx\"" +
+		"}" +
+		"}" +
+		"]" +
+		"}," +
+		"\"cliVersion\":\"development\"," +
+		"\"daemonVersion\":\"0.14.1\"," +
+		"\"management\":" +
+		"{" +
+		"\"url\":\"my-awesome-management.com:443\"," +
+		"\"connected\":true" +
+		"}," +
+		"\"signal\":" +
+		"{\"" +
+		"url\":\"my-awesome-signal.com:443\"," +
+		"\"connected\":true" +
+		"}," +
+		"\"netbirdIp\":\"192.168.178.100/16\"," +
+		"\"publicKey\":\"Some-Pub-Key\"," +
+		"\"usesKernelInterface\":true," +
+		"\"fqdn\":\"some-localhost.awesome-domain.com\"" +
+		"}"
+	// @formatter:on
+
+	assert.Equal(t, expectedJSON, json)
+}
+
+func TestParsingToYAML(t *testing.T) {
+	yaml, _ := parseToYAML(overview)
+
+	expectedYAML := "peers:\n" +
+		"    total: 2\n" +
+		"    connected: 2\n" +
+		"    details:\n" +
+		"        - fqdn: peer-1.awesome-domain.com\n" +
+		"          netbirdIp: 192.168.178.101\n" +
+		"          publicKey: Pubkey1\n" +
+		"          status: Connected\n" +
+		"          lastStatusUpdate: 2001-01-01T01:01:01Z\n" +
+		"          connectionType: P2P\n" +
+		"          direct: true\n" +
+		"          iceCandidateType:\n" +
+		"            local: \"\"\n" +
+		"            remote: \"\"\n" +
+		"        - fqdn: peer-2.awesome-domain.com\n" +
+		"          netbirdIp: 192.168.178.102\n" +
+		"          publicKey: Pubkey2\n" +
+		"          status: Connected\n" +
+		"          lastStatusUpdate: 2002-02-02T02:02:02Z\n" +
+		"          connectionType: Relayed\n" +
+		"          direct: false\n" +
+		"          iceCandidateType:\n" +
+		"            local: relay\n" +
+		"            remote: prflx\n" +
+		"cliVersion: development\n" +
+		"daemonVersion: 0.14.1\n" +
+		"management:\n" +
+		"    url: my-awesome-management.com:443\n" +
+		"    connected: true\n" +
+		"signal:\n" +
+		"    url: my-awesome-signal.com:443\n" +
+		"    connected: true\n" +
+		"netbirdIp: 192.168.178.100/16\n" +
+		"publicKey: Some-Pub-Key\n" +
+		"usesKernelInterface: true\n" +
+		"fqdn: some-localhost.awesome-domain.com\n"
+
+	assert.Equal(t, expectedYAML, yaml)
+}
+
+func TestParsingToDetail(t *testing.T) {
+	detail := parseToFullDetailSummary(overview)
+
+	expectedDetail := "Peers detail:\n" +
+		" peer-1.awesome-domain.com:\n" +
+		"  NetBird IP: 192.168.178.101\n" +
+		"  Public key: Pubkey1\n" +
+		"  Status: Connected\n" +
+		"  -- detail --\n" +
+		"  Connection type: P2P\n" +
+		"  Direct: true\n" +
+		"  ICE candidate (Local/Remote): -/-\n" +
+		"  Last connection update: 2001-01-01 01:01:01\n" +
+		"\n" +
+		" peer-2.awesome-domain.com:\n" +
+		"  NetBird IP: 192.168.178.102\n" +
+		"  Public key: Pubkey2\n" +
+		"  Status: Connected\n" +
+		"  -- detail --\n" +
+		"  Connection type: Relayed\n" +
+		"  Direct: false\n" +
+		"  ICE candidate (Local/Remote): relay/prflx\n" +
+		"  Last connection update: 2002-02-02 02:02:02\n" +
+		"\n" +
+		"Daemon version: 0.14.1\n" +
+		"CLI version: development\n" +
+		"Management: Connected to my-awesome-management.com:443\n" +
+		"Signal: Connected to my-awesome-signal.com:443\n" +
+		"FQDN: some-localhost.awesome-domain.com\n" +
+		"NetBird IP: 192.168.178.100/16\n" +
+		"Interface type: Kernel\n" +
+		"Peers count: 2/2 Connected\n"
+
+	assert.Equal(t, expectedDetail, detail)
+}
+
+func TestParsingToShortVersion(t *testing.T) {
+	shortVersion := parseGeneralSummary(overview, false)
+
+	expectedString := "Daemon version: 0.14.1\n" +
+		"CLI version: development\n" +
+		"Management: Connected\n" +
+		"Signal: Connected\n" +
+		"FQDN: some-localhost.awesome-domain.com\n" +
+		"NetBird IP: 192.168.178.100/16\n" +
+		"Interface type: Kernel\n" +
+		"Peers count: 2/2 Connected\n"
+
+	assert.Equal(t, expectedString, shortVersion)
+}
+
+func TestParsingOfIP(t *testing.T) {
+	InterfaceIP := "192.168.178.123/16"
+
+	parsedIP := parseInterfaceIP(InterfaceIP)
+
+	assert.Equal(t, "192.168.178.123\n", parsedIP)
+}

client/cmd/testutil.go

@@ -0,0 +1,122 @@
+package cmd
+
+import (
+	"context"
+	"net"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/netbirdio/netbird/management/server/activity"
+
+	"github.com/netbirdio/netbird/util"
+
+	"google.golang.org/grpc"
+
+	clientProto "github.com/netbirdio/netbird/client/proto"
+	client "github.com/netbirdio/netbird/client/server"
+	mgmtProto "github.com/netbirdio/netbird/management/proto"
+	mgmt "github.com/netbirdio/netbird/management/server"
+	sigProto "github.com/netbirdio/netbird/signal/proto"
+	sig "github.com/netbirdio/netbird/signal/server"
+)
+
+func startTestingServices(t *testing.T) string {
+	config := &mgmt.Config{}
+	_, err := util.ReadJson("../testdata/management.json", config)
+	if err != nil {
+		t.Fatal(err)
+	}
+	testDir := t.TempDir()
+	config.Datadir = testDir
+	err = util.CopyFileContents("../testdata/store.json", filepath.Join(testDir, "store.json"))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, signalLis := startSignal(t)
+	signalAddr := signalLis.Addr().String()
+	config.Signal.URI = signalAddr
+
+	_, mgmLis := startManagement(t, config)
+	mgmAddr := mgmLis.Addr().String()
+	return mgmAddr
+}
+
+func startSignal(t *testing.T) (*grpc.Server, net.Listener) {
+	lis, err := net.Listen("tcp", ":0")
+	if err != nil {
+		t.Fatal(err)
+	}
+	s := grpc.NewServer()
+	sigProto.RegisterSignalExchangeServer(s, sig.NewServer())
+	go func() {
+		if err := s.Serve(lis); err != nil {
+			panic(err)
+		}
+	}()
+
+	return s, lis
+}
+
+func startManagement(t *testing.T, config *mgmt.Config) (*grpc.Server, net.Listener) {
+	lis, err := net.Listen("tcp", ":0")
+	if err != nil {
+		t.Fatal(err)
+	}
+	s := grpc.NewServer()
+	store, err := mgmt.NewFileStore(config.Datadir, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	peersUpdateManager := mgmt.NewPeersUpdateManager()
+	eventStore := &activity.InMemoryEventStore{}
+	if err != nil {
+		return nil, nil
+	}
+	accountManager, err := mgmt.BuildManager(store, peersUpdateManager, nil, "", "",
+		eventStore)
+	if err != nil {
+		t.Fatal(err)
+	}
+	turnManager := mgmt.NewTimeBasedAuthSecretsManager(peersUpdateManager, config.TURNConfig)
+	mgmtServer, err := mgmt.NewServer(config, accountManager, peersUpdateManager, turnManager, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	mgmtProto.RegisterManagementServiceServer(s, mgmtServer)
+	go func() {
+		if err := s.Serve(lis); err != nil {
+			t.Error(err)
+		}
+	}()
+
+	return s, lis
+}
+
+func startClientDaemon(
+	t *testing.T, ctx context.Context, managementURL, configPath string,
+) (*grpc.Server, net.Listener) {
+	lis, err := net.Listen("tcp", "127.0.0.1:0")
+	if err != nil {
+		t.Fatal(err)
+	}
+	s := grpc.NewServer()
+
+	server := client.New(ctx,
+		configPath, "")
+	if err := server.Start(); err != nil {
+		t.Fatal(err)
+	}
+	clientProto.RegisterDaemonServiceServer(s, server)
+	go func() {
+		if err := s.Serve(lis); err != nil {
+			t.Error(err)
+		}
+	}()
+
+	time.Sleep(time.Second)
+
+	return s, lis
+}

client/cmd/up.go

@@ -0,0 +1,278 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/netip"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/codes"
+	gstatus "google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/internal/peer"
+	"github.com/netbirdio/netbird/client/proto"
+	"github.com/netbirdio/netbird/client/system"
+	"github.com/netbirdio/netbird/util"
+)
+
+const (
+	invalidInputType int = iota
+	ipInputType
+	interfaceInputType
+)
+
+var (
+	foregroundMode bool
+	upCmd          = &cobra.Command{
+		Use:   "up",
+		Short: "install, login and start Netbird client",
+		RunE:  upFunc,
+	}
+)
+
+func init() {
+	upCmd.PersistentFlags().BoolVarP(&foregroundMode, "foreground-mode", "F", false, "start service in foreground")
+}
+
+func upFunc(cmd *cobra.Command, args []string) error {
+	SetFlagsFromEnvVars(rootCmd)
+	SetFlagsFromEnvVars(cmd)
+
+	cmd.SetOut(cmd.OutOrStdout())
+
+	err := util.InitLog(logLevel, "console")
+	if err != nil {
+		return fmt.Errorf("failed initializing log %v", err)
+	}
+
+	err = validateNATExternalIPs(natExternalIPs)
+	if err != nil {
+		return err
+	}
+
+	ctx := internal.CtxInitState(cmd.Context())
+
+	if hostName != "" {
+		// nolint
+		ctx = context.WithValue(ctx, system.DeviceNameCtxKey, hostName)
+	}
+
+	if foregroundMode {
+		return runInForegroundMode(ctx, cmd)
+	}
+	return runInDaemonMode(ctx, cmd)
+}
+
+func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
+	err := handleRebrand(cmd)
+	if err != nil {
+		return err
+	}
+
+	customDNSAddressConverted, err := parseCustomDNSAddress(cmd.Flag(dnsResolverAddress).Changed)
+	if err != nil {
+		return err
+	}
+
+	ic := internal.ConfigInput{
+		ManagementURL:    managementURL,
+		AdminURL:         adminURL,
+		ConfigPath:       configPath,
+		NATExternalIPs:   natExternalIPs,
+		CustomDNSAddress: customDNSAddressConverted,
+	}
+	if preSharedKey != "" {
+		ic.PreSharedKey = &preSharedKey
+	}
+
+	config, err := internal.UpdateOrCreateConfig(ic)
+	if err != nil {
+		return fmt.Errorf("get config file: %v", err)
+	}
+
+	config, _ = internal.UpdateOldManagementPort(ctx, config, configPath)
+
+	err = foregroundLogin(ctx, cmd, config, setupKey)
+	if err != nil {
+		return fmt.Errorf("foreground login failed: %v", err)
+	}
+
+	var cancel context.CancelFunc
+	ctx, cancel = context.WithCancel(ctx)
+	SetupCloseHandler(ctx, cancel)
+	return internal.RunClient(ctx, config, peer.NewRecorder(config.ManagementURL.String()))
+}
+
+func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
+
+	customDNSAddressConverted, err := parseCustomDNSAddress(cmd.Flag(dnsResolverAddress).Changed)
+	if err != nil {
+		return err
+	}
+
+	conn, err := DialClientGRPCServer(ctx, daemonAddr)
+	if err != nil {
+		return fmt.Errorf("failed to connect to daemon error: %v\n"+
+			"If the daemon is not running please run: "+
+			"\nnetbird service install \nnetbird service start\n", err)
+	}
+	defer func() {
+		err := conn.Close()
+		if err != nil {
+			log.Warnf("failed closing dameon gRPC client connection %v", err)
+			return
+		}
+	}()
+
+	client := proto.NewDaemonServiceClient(conn)
+
+	status, err := client.Status(ctx, &proto.StatusRequest{})
+	if err != nil {
+		return fmt.Errorf("unable to get daemon status: %v", err)
+	}
+
+	if status.Status == string(internal.StatusConnected) {
+		cmd.Println("Already connected")
+		return nil
+	}
+
+	loginRequest := proto.LoginRequest{
+		SetupKey:            setupKey,
+		PreSharedKey:        preSharedKey,
+		ManagementUrl:       managementURL,
+		AdminURL:            adminURL,
+		NatExternalIPs:      natExternalIPs,
+		CleanNATExternalIPs: natExternalIPs != nil && len(natExternalIPs) == 0,
+		CustomDNSAddress:    customDNSAddressConverted,
+	}
+
+	var loginErr error
+
+	var loginResp *proto.LoginResponse
+
+	err = WithBackOff(func() error {
+		var backOffErr error
+		loginResp, backOffErr = client.Login(ctx, &loginRequest)
+		if s, ok := gstatus.FromError(backOffErr); ok && (s.Code() == codes.InvalidArgument ||
+			s.Code() == codes.PermissionDenied ||
+			s.Code() == codes.NotFound ||
+			s.Code() == codes.Unimplemented) {
+			loginErr = backOffErr
+			return nil
+		}
+		return backOffErr
+	})
+	if err != nil {
+		return fmt.Errorf("login backoff cycle failed: %v", err)
+	}
+
+	if loginErr != nil {
+		return fmt.Errorf("login failed: %v", loginErr)
+	}
+
+	if loginResp.NeedsSSOLogin {
+
+		openURL(cmd, loginResp.VerificationURIComplete, loginResp.UserCode)
+
+		_, err = client.WaitSSOLogin(ctx, &proto.WaitSSOLoginRequest{UserCode: loginResp.UserCode})
+		if err != nil {
+			return fmt.Errorf("waiting sso login failed with: %v", err)
+		}
+	}
+
+	if _, err := client.Up(ctx, &proto.UpRequest{}); err != nil {
+		return fmt.Errorf("call service up method: %v", err)
+	}
+	cmd.Println("Connected")
+	return nil
+}
+
+func validateNATExternalIPs(list []string) error {
+	for _, element := range list {
+		if element == "" {
+			return fmt.Errorf("empty string is not a valid input for %s", externalIPMapFlag)
+		}
+
+		subElements := strings.Split(element, "/")
+		if len(subElements) > 2 {
+			return fmt.Errorf("%s is not a valid input for %s. it should be formated as \"String\" or \"String/String\"", element, externalIPMapFlag)
+		}
+
+		if len(subElements) == 1 && !isValidIP(subElements[0]) {
+			return fmt.Errorf("%s is not a valid input for %s. it should be formated as \"IP\" or \"IP/IP\", or \"IP/Interface Name\"", element, externalIPMapFlag)
+		}
+
+		last := 0
+		for _, singleElement := range subElements {
+			inputType, err := validateElement(singleElement)
+			if err != nil {
+				return fmt.Errorf("%s is not a valid input for %s. it should be an IP string or a network name", singleElement, externalIPMapFlag)
+			}
+			if last == interfaceInputType && inputType == interfaceInputType {
+				return fmt.Errorf("%s is not a valid input for %s. it should not contain two interface names", element, externalIPMapFlag)
+			}
+			last = inputType
+		}
+	}
+	return nil
+}
+
+func validateElement(element string) (int, error) {
+	if isValidIP(element) {
+		return ipInputType, nil
+	}
+	validIface, err := isValidInterface(element)
+	if err != nil {
+		return invalidInputType, fmt.Errorf("unable to validate the network interface name, error: %s", err)
+	}
+
+	if validIface {
+		return interfaceInputType, nil
+	}
+
+	return interfaceInputType, fmt.Errorf("invalid IP or network interface name not found")
+}
+
+func isValidIP(ip string) bool {
+	return net.ParseIP(ip) != nil
+}
+
+func isValidInterface(name string) (bool, error) {
+	netInterfaces, err := net.Interfaces()
+	if err != nil {
+		return false, err
+	}
+	for _, iface := range netInterfaces {
+		if iface.Name == name {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+func parseCustomDNSAddress(modified bool) ([]byte, error) {
+	var parsed []byte
+	if modified {
+		if !isValidAddrPort(customDNSAddress) {
+			return nil, fmt.Errorf("%s is invalid, it should be formated as IP:Port string or as an empty string like \"\"", customDNSAddress)
+		}
+		if customDNSAddress == "" && logFile != "console" {
+			parsed = []byte("empty")
+		} else {
+			parsed = []byte(customDNSAddress)
+		}
+	}
+	return parsed, nil
+}
+
+func isValidAddrPort(input string) bool {
+	if input == "" {
+		return true
+	}
+	_, err := netip.ParseAddrPort(input)
+	return err == nil
+}

client/cmd/up_daemon_test.go

@@ -0,0 +1,75 @@
+package cmd
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/netbirdio/netbird/client/internal"
+)
+
+var cliAddr string
+
+func TestUpDaemon(t *testing.T) {
+	mgmAddr := startTestingServices(t)
+
+	tempDir := t.TempDir()
+	confPath := tempDir + "/config.json"
+
+	ctx := internal.CtxInitState(context.Background())
+	state := internal.CtxGetState(ctx)
+
+	_, cliLis := startClientDaemon(t, ctx, "http://"+mgmAddr, confPath)
+
+	cliAddr = cliLis.Addr().String()
+
+	daemonAddr = "tcp://" + cliAddr
+	rootCmd.SetArgs([]string{
+		"login",
+		"--daemon-addr", "tcp://" + cliAddr,
+		"--setup-key", "A2C8E62B-38F5-4553-B31E-DD66C696CEBB",
+		"--log-file", "",
+	})
+	if err := rootCmd.Execute(); err != nil {
+		t.Errorf("expected no error while running up command, got %v", err)
+		return
+	}
+	time.Sleep(time.Second * 3)
+	if status, err := state.Status(); err != nil && status != internal.StatusIdle {
+		t.Errorf("wrong status after login: %s, %v", internal.StatusIdle, err)
+		return
+	}
+
+	rootCmd.SetArgs([]string{
+		"up",
+		"--daemon-addr", "tcp://" + cliAddr,
+		"--log-file", "",
+	})
+	if err := rootCmd.Execute(); err != nil {
+		t.Errorf("expected no error while running up command, got %v", err)
+		return
+	}
+	time.Sleep(time.Second * 3)
+	if status, err := state.Status(); err != nil && status != internal.StatusConnected {
+		t.Errorf("wrong status after connect: %s, %v", status, err)
+		return
+	}
+
+	rootCmd.SetArgs([]string{
+		"status",
+		"--daemon-addr", "tcp://" + cliAddr,
+	})
+	if err := rootCmd.Execute(); err != nil {
+		t.Errorf("expected no error while running up command, got %v", err)
+		return
+	}
+	time.Sleep(time.Second * 3)
+
+	rootCmd.SetErr(nil)
+	rootCmd.SetArgs([]string{"down", "--daemon-addr", "tcp://" + cliAddr})
+	if err := rootCmd.Execute(); err != nil {
+		t.Errorf("expected no error while running up command, got %v", err)
+		return
+	}
+	// we can't check status here, because context already canceled
+}

client/cmd/version.go

@@ -0,0 +1,18 @@
+package cmd
+
+import (
+	"github.com/spf13/cobra"
+
+	"github.com/netbirdio/netbird/version"
+)
+
+var (
+	versionCmd = &cobra.Command{
+		Use:   "version",
+		Short: "prints Netbird version",
+		Run: func(cmd *cobra.Command, args []string) {
+			cmd.SetOut(cmd.OutOrStdout())
+			cmd.Println(version.NetbirdVersion())
+		},
+	}
+)

client/firewall/firewall.go

@@ -0,0 +1,68 @@
+package firewall
+
+import (
+	"net"
+)
+
+// Rule abstraction should be implemented by each firewall manager
+//
+// Each firewall type for different OS can use different type
+// of the properties to hold data of the created rule
+type Rule interface {
+	// GetRuleID returns the rule id
+	GetRuleID() string
+}
+
+// RuleDirection is the traffic direction which a rule is applied
+type RuleDirection int
+
+const (
+	// RuleDirectionIN applies to filters that handlers incoming traffic
+	RuleDirectionIN RuleDirection = iota
+	// RuleDirectionOUT applies to filters that handlers outgoing traffic
+	RuleDirectionOUT
+)
+
+// Action is the action to be taken on a rule
+type Action int
+
+const (
+	// ActionUnknown is a unknown action
+	ActionUnknown Action = iota
+	// ActionAccept is the action to accept a packet
+	ActionAccept
+	// ActionDrop is the action to drop a packet
+	ActionDrop
+)
+
+// Manager is the high level abstraction of a firewall manager
+//
+// It declares methods which handle actions required by the
+// Netbird client for ACL and routing functionality
+type Manager interface {
+	// AddFiltering rule to the firewall
+	//
+	// If comment argument is empty firewall manager should set
+	// rule ID as comment for the rule
+	AddFiltering(
+		ip net.IP,
+		proto Protocol,
+		sPort *Port,
+		dPort *Port,
+		direction RuleDirection,
+		action Action,
+		ipsetName string,
+		comment string,
+	) (Rule, error)
+
+	// DeleteRule from the firewall by rule definition
+	DeleteRule(rule Rule) error
+
+	// Reset firewall to the default state
+	Reset() error
+
+	// Flush the changes to firewall controller
+	Flush() error
+
+	// TODO: migrate routemanager firewal actions to this interface
+}

client/firewall/iptables/manager_linux.go

@@ -0,0 +1,455 @@
+package iptables
+
+import (
+	"fmt"
+	"net"
+	"strconv"
+	"sync"
+
+	"github.com/coreos/go-iptables/iptables"
+	"github.com/google/uuid"
+	"github.com/nadoo/ipset"
+	log "github.com/sirupsen/logrus"
+
+	fw "github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/iface"
+)
+
+const (
+	// ChainInputFilterName is the name of the chain that is used for filtering incoming packets
+	ChainInputFilterName = "NETBIRD-ACL-INPUT"
+
+	// ChainOutputFilterName is the name of the chain that is used for filtering outgoing packets
+	ChainOutputFilterName = "NETBIRD-ACL-OUTPUT"
+)
+
+// dropAllDefaultRule in the Netbird chain
+var dropAllDefaultRule = []string{"-j", "DROP"}
+
+// Manager of iptables firewall
+type Manager struct {
+	mutex sync.Mutex
+
+	ipv4Client *iptables.IPTables
+	ipv6Client *iptables.IPTables
+
+	inputDefaultRuleSpecs  []string
+	outputDefaultRuleSpecs []string
+	wgIface                iFaceMapper
+
+	rulesets map[string]ruleset
+}
+
+// iFaceMapper defines subset methods of interface required for manager
+type iFaceMapper interface {
+	Name() string
+	Address() iface.WGAddress
+}
+
+type ruleset struct {
+	rule *Rule
+	ips  map[string]string
+}
+
+// Create iptables firewall manager
+func Create(wgIface iFaceMapper) (*Manager, error) {
+	m := &Manager{
+		wgIface: wgIface,
+		inputDefaultRuleSpecs: []string{
+			"-i", wgIface.Name(), "-j", ChainInputFilterName, "-s", wgIface.Address().String()},
+		outputDefaultRuleSpecs: []string{
+			"-o", wgIface.Name(), "-j", ChainOutputFilterName, "-d", wgIface.Address().String()},
+		rulesets: make(map[string]ruleset),
+	}
+
+	if err := ipset.Init(); err != nil {
+		return nil, fmt.Errorf("init ipset: %w", err)
+	}
+
+	// init clients for booth ipv4 and ipv6
+	ipv4Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
+	if err != nil {
+		return nil, fmt.Errorf("iptables is not installed in the system or not supported")
+	}
+	if isIptablesClientAvailable(ipv4Client) {
+		m.ipv4Client = ipv4Client
+	}
+
+	ipv6Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv6)
+	if err != nil {
+		log.Errorf("ip6tables is not installed in the system or not supported: %v", err)
+	} else {
+		if isIptablesClientAvailable(ipv6Client) {
+			m.ipv6Client = ipv6Client
+		}
+	}
+
+	if err := m.Reset(); err != nil {
+		return nil, fmt.Errorf("failed to reset firewall: %v", err)
+	}
+	return m, nil
+}
+
+func isIptablesClientAvailable(client *iptables.IPTables) bool {
+	_, err := client.ListChains("filter")
+	return err == nil
+}
+
+// AddFiltering rule to the firewall
+//
+// If comment is empty rule ID is used as comment
+func (m *Manager) AddFiltering(
+	ip net.IP,
+	protocol fw.Protocol,
+	sPort *fw.Port,
+	dPort *fw.Port,
+	direction fw.RuleDirection,
+	action fw.Action,
+	ipsetName string,
+	comment string,
+) (fw.Rule, error) {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	client, err := m.client(ip)
+	if err != nil {
+		return nil, err
+	}
+
+	var dPortVal, sPortVal string
+	if dPort != nil && dPort.Values != nil {
+		// TODO: we support only one port per rule in current implementation of ACLs
+		dPortVal = strconv.Itoa(dPort.Values[0])
+	}
+	if sPort != nil && sPort.Values != nil {
+		sPortVal = strconv.Itoa(sPort.Values[0])
+	}
+	ipsetName = m.transformIPsetName(ipsetName, sPortVal, dPortVal)
+
+	ruleID := uuid.New().String()
+	if comment == "" {
+		comment = ruleID
+	}
+
+	if ipsetName != "" {
+		rs, rsExists := m.rulesets[ipsetName]
+		if !rsExists {
+			if err := ipset.Flush(ipsetName); err != nil {
+				log.Errorf("flush ipset %q before use it: %v", ipsetName, err)
+			}
+			if err := ipset.Create(ipsetName); err != nil {
+				return nil, fmt.Errorf("failed to create ipset: %w", err)
+			}
+		}
+
+		if err := ipset.Add(ipsetName, ip.String()); err != nil {
+			return nil, fmt.Errorf("failed to add IP to ipset: %w", err)
+		}
+
+		if rsExists {
+			// if ruleset already exists it means we already have the firewall rule
+			// so we need to update IPs in the ruleset and return new fw.Rule object for ACL manager.
+			rs.ips[ip.String()] = ruleID
+			return &Rule{
+				ruleID:    ruleID,
+				ipsetName: ipsetName,
+				ip:        ip.String(),
+				dst:       direction == fw.RuleDirectionOUT,
+				v6:        ip.To4() == nil,
+			}, nil
+		}
+		// this is new ipset so we need to create firewall rule for it
+	}
+
+	specs := m.filterRuleSpecs("filter", ip, string(protocol), sPortVal, dPortVal,
+		direction, action, comment, ipsetName)
+
+	if direction == fw.RuleDirectionOUT {
+		ok, err := client.Exists("filter", ChainOutputFilterName, specs...)
+		if err != nil {
+			return nil, fmt.Errorf("check is output rule already exists: %w", err)
+		}
+		if ok {
+			return nil, fmt.Errorf("input rule already exists")
+		}
+
+		if err := client.Insert("filter", ChainOutputFilterName, 1, specs...); err != nil {
+			return nil, err
+		}
+	} else {
+		ok, err := client.Exists("filter", ChainInputFilterName, specs...)
+		if err != nil {
+			return nil, fmt.Errorf("check is input rule already exists: %w", err)
+		}
+		if ok {
+			return nil, fmt.Errorf("input rule already exists")
+		}
+
+		if err := client.Insert("filter", ChainInputFilterName, 1, specs...); err != nil {
+			return nil, err
+		}
+	}
+
+	rule := &Rule{
+		ruleID:    ruleID,
+		specs:     specs,
+		ipsetName: ipsetName,
+		ip:        ip.String(),
+		dst:       direction == fw.RuleDirectionOUT,
+		v6:        ip.To4() == nil,
+	}
+	if ipsetName != "" {
+		// ipset name is defined and it means that this rule was created
+		// for it, need to assosiate it with ruleset
+		m.rulesets[ipsetName] = ruleset{
+			rule: rule,
+			ips:  map[string]string{rule.ip: ruleID},
+		}
+	}
+
+	return rule, nil
+}
+
+// DeleteRule from the firewall by rule definition
+func (m *Manager) DeleteRule(rule fw.Rule) error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	r, ok := rule.(*Rule)
+	if !ok {
+		return fmt.Errorf("invalid rule type")
+	}
+
+	client := m.ipv4Client
+	if r.v6 {
+		if m.ipv6Client == nil {
+			return fmt.Errorf("ipv6 is not supported")
+		}
+		client = m.ipv6Client
+	}
+
+	if rs, ok := m.rulesets[r.ipsetName]; ok {
+		// delete IP from ruleset IPs list and ipset
+		if _, ok := rs.ips[r.ip]; ok {
+			if err := ipset.Del(r.ipsetName, r.ip); err != nil {
+				return fmt.Errorf("failed to delete ip from ipset: %w", err)
+			}
+			delete(rs.ips, r.ip)
+		}
+
+		// if after delete, set still contains other IPs,
+		// no need to delete firewall rule and we should exit here
+		if len(rs.ips) != 0 {
+			return nil
+		}
+
+		// we delete last IP from the set, that means we need to delete
+		// set itself and assosiated firewall rule too
+		delete(m.rulesets, r.ipsetName)
+
+		if err := ipset.Destroy(r.ipsetName); err != nil {
+			log.Errorf("delete empty ipset: %v", err)
+		}
+		r = rs.rule
+	}
+
+	if r.dst {
+		return client.Delete("filter", ChainOutputFilterName, r.specs...)
+	}
+	return client.Delete("filter", ChainInputFilterName, r.specs...)
+}
+
+// Reset firewall to the default state
+func (m *Manager) Reset() error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	if err := m.reset(m.ipv4Client, "filter"); err != nil {
+		return fmt.Errorf("clean ipv4 firewall ACL input chain: %w", err)
+	}
+	if m.ipv6Client != nil {
+		if err := m.reset(m.ipv6Client, "filter"); err != nil {
+			return fmt.Errorf("clean ipv6 firewall ACL input chain: %w", err)
+		}
+	}
+
+	return nil
+}
+
+// Flush doesn't need to be implemented for this manager
+func (m *Manager) Flush() error { return nil }
+
+// reset firewall chain, clear it and drop it
+func (m *Manager) reset(client *iptables.IPTables, table string) error {
+	ok, err := client.ChainExists(table, ChainInputFilterName)
+	if err != nil {
+		return fmt.Errorf("failed to check if input chain exists: %w", err)
+	}
+	if ok {
+		if ok, err := client.Exists("filter", "INPUT", m.inputDefaultRuleSpecs...); err != nil {
+			return err
+		} else if ok {
+			if err := client.Delete("filter", "INPUT", m.inputDefaultRuleSpecs...); err != nil {
+				log.WithError(err).Errorf("failed to delete default input rule: %v", err)
+			}
+		}
+	}
+
+	ok, err = client.ChainExists(table, ChainOutputFilterName)
+	if err != nil {
+		return fmt.Errorf("failed to check if output chain exists: %w", err)
+	}
+	if ok {
+		if ok, err := client.Exists("filter", "OUTPUT", m.outputDefaultRuleSpecs...); err != nil {
+			return err
+		} else if ok {
+			if err := client.Delete("filter", "OUTPUT", m.outputDefaultRuleSpecs...); err != nil {
+				log.WithError(err).Errorf("failed to delete default output rule: %v", err)
+			}
+		}
+	}
+
+	if err := client.ClearAndDeleteChain(table, ChainInputFilterName); err != nil {
+		log.Errorf("failed to clear and delete input chain: %v", err)
+		return nil
+	}
+
+	if err := client.ClearAndDeleteChain(table, ChainOutputFilterName); err != nil {
+		log.Errorf("failed to clear and delete input chain: %v", err)
+		return nil
+	}
+
+	for ipsetName := range m.rulesets {
+		if err := ipset.Flush(ipsetName); err != nil {
+			log.Errorf("flush ipset %q during reset: %v", ipsetName, err)
+		}
+		if err := ipset.Destroy(ipsetName); err != nil {
+			log.Errorf("delete ipset %q during reset: %v", ipsetName, err)
+		}
+		delete(m.rulesets, ipsetName)
+	}
+
+	return nil
+}
+
+// filterRuleSpecs returns the specs of a filtering rule
+func (m *Manager) filterRuleSpecs(
+	table string, ip net.IP, protocol string, sPort, dPort string,
+	direction fw.RuleDirection, action fw.Action, comment string,
+	ipsetName string,
+) (specs []string) {
+	matchByIP := true
+	// don't use IP matching if IP is ip 0.0.0.0
+	if s := ip.String(); s == "0.0.0.0" || s == "::" {
+		matchByIP = false
+	}
+	switch direction {
+	case fw.RuleDirectionIN:
+		if matchByIP {
+			if ipsetName != "" {
+				specs = append(specs, "-m", "set", "--set", ipsetName, "src")
+			} else {
+				specs = append(specs, "-s", ip.String())
+			}
+		}
+	case fw.RuleDirectionOUT:
+		if matchByIP {
+			if ipsetName != "" {
+				specs = append(specs, "-m", "set", "--set", ipsetName, "dst")
+			} else {
+				specs = append(specs, "-d", ip.String())
+			}
+		}
+	}
+	if protocol != "all" {
+		specs = append(specs, "-p", protocol)
+	}
+	if sPort != "" {
+		specs = append(specs, "--sport", sPort)
+	}
+	if dPort != "" {
+		specs = append(specs, "--dport", dPort)
+	}
+	specs = append(specs, "-j", m.actionToStr(action))
+	return append(specs, "-m", "comment", "--comment", comment)
+}
+
+// rawClient returns corresponding iptables client for the given ip
+func (m *Manager) rawClient(ip net.IP) (*iptables.IPTables, error) {
+	if ip.To4() != nil {
+		return m.ipv4Client, nil
+	}
+	if m.ipv6Client == nil {
+		return nil, fmt.Errorf("ipv6 is not supported")
+	}
+	return m.ipv6Client, nil
+}
+
+// client returns client with initialized chain and default rules
+func (m *Manager) client(ip net.IP) (*iptables.IPTables, error) {
+	client, err := m.rawClient(ip)
+	if err != nil {
+		return nil, err
+	}
+
+	ok, err := client.ChainExists("filter", ChainInputFilterName)
+	if err != nil {
+		return nil, fmt.Errorf("failed to check if chain exists: %w", err)
+	}
+
+	if !ok {
+		if err := client.NewChain("filter", ChainInputFilterName); err != nil {
+			return nil, fmt.Errorf("failed to create input chain: %w", err)
+		}
+
+		if err := client.AppendUnique("filter", ChainInputFilterName, dropAllDefaultRule...); err != nil {
+			return nil, fmt.Errorf("failed to create default drop all in netbird input chain: %w", err)
+		}
+
+		if err := client.AppendUnique("filter", "INPUT", m.inputDefaultRuleSpecs...); err != nil {
+			return nil, fmt.Errorf("failed to create input chain jump rule: %w", err)
+		}
+
+	}
+
+	ok, err = client.ChainExists("filter", ChainOutputFilterName)
+	if err != nil {
+		return nil, fmt.Errorf("failed to check if chain exists: %w", err)
+	}
+
+	if !ok {
+		if err := client.NewChain("filter", ChainOutputFilterName); err != nil {
+			return nil, fmt.Errorf("failed to create output chain: %w", err)
+		}
+
+		if err := client.AppendUnique("filter", ChainOutputFilterName, dropAllDefaultRule...); err != nil {
+			return nil, fmt.Errorf("failed to create default drop all in netbird output chain: %w", err)
+		}
+
+		if err := client.AppendUnique("filter", "OUTPUT", m.outputDefaultRuleSpecs...); err != nil {
+			return nil, fmt.Errorf("failed to create output chain jump rule: %w", err)
+		}
+	}
+
+	return client, nil
+}
+
+func (m *Manager) actionToStr(action fw.Action) string {
+	if action == fw.ActionAccept {
+		return "ACCEPT"
+	}
+	return "DROP"
+}
+
+func (m *Manager) transformIPsetName(ipsetName string, sPort, dPort string) string {
+	if ipsetName == "" {
+		return ""
+	} else if sPort != "" && dPort != "" {
+		return ipsetName + "-sport-dport"
+	} else if sPort != "" {
+		return ipsetName + "-sport"
+	} else if dPort != "" {
+		return ipsetName + "-dport"
+	}
+	return ipsetName
+}

client/firewall/iptables/manager_linux_test.go

@@ -0,0 +1,261 @@
+package iptables
+
+import (
+	"fmt"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/coreos/go-iptables/iptables"
+	"github.com/stretchr/testify/require"
+
+	fw "github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/iface"
+)
+
+// iFaceMapper defines subset methods of interface required for manager
+type iFaceMock struct {
+	NameFunc    func() string
+	AddressFunc func() iface.WGAddress
+}
+
+func (i *iFaceMock) Name() string {
+	if i.NameFunc != nil {
+		return i.NameFunc()
+	}
+	panic("NameFunc is not set")
+}
+
+func (i *iFaceMock) Address() iface.WGAddress {
+	if i.AddressFunc != nil {
+		return i.AddressFunc()
+	}
+	panic("AddressFunc is not set")
+}
+
+func TestIptablesManager(t *testing.T) {
+	ipv4Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
+	require.NoError(t, err)
+
+	mock := &iFaceMock{
+		NameFunc: func() string {
+			return "lo"
+		},
+		AddressFunc: func() iface.WGAddress {
+			return iface.WGAddress{
+				IP: net.ParseIP("10.20.0.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("10.20.0.0"),
+					Mask: net.IPv4Mask(255, 255, 255, 0),
+				},
+			}
+		},
+	}
+
+	// just check on the local interface
+	manager, err := Create(mock)
+	require.NoError(t, err)
+
+	time.Sleep(time.Second)
+
+	defer func() {
+		err := manager.Reset()
+		require.NoError(t, err, "clear the manager state")
+
+		time.Sleep(time.Second)
+	}()
+
+	var rule1 fw.Rule
+	t.Run("add first rule", func(t *testing.T) {
+		ip := net.ParseIP("10.20.0.2")
+		port := &fw.Port{Values: []int{8080}}
+		rule1, err = manager.AddFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
+		require.NoError(t, err, "failed to add rule")
+
+		checkRuleSpecs(t, ipv4Client, ChainOutputFilterName, true, rule1.(*Rule).specs...)
+	})
+
+	var rule2 fw.Rule
+	t.Run("add second rule", func(t *testing.T) {
+		ip := net.ParseIP("10.20.0.3")
+		port := &fw.Port{
+			Values: []int{8043: 8046},
+		}
+		rule2, err = manager.AddFiltering(
+			ip, "tcp", port, nil, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTPS traffic from ports range")
+		require.NoError(t, err, "failed to add rule")
+
+		checkRuleSpecs(t, ipv4Client, ChainInputFilterName, true, rule2.(*Rule).specs...)
+	})
+
+	t.Run("delete first rule", func(t *testing.T) {
+		err := manager.DeleteRule(rule1)
+		require.NoError(t, err, "failed to delete rule")
+
+		checkRuleSpecs(t, ipv4Client, ChainOutputFilterName, false, rule1.(*Rule).specs...)
+	})
+
+	t.Run("delete second rule", func(t *testing.T) {
+		err := manager.DeleteRule(rule2)
+		require.NoError(t, err, "failed to delete rule")
+
+		require.Empty(t, manager.rulesets, "rulesets index after removed second rule must be empty")
+	})
+
+	t.Run("reset check", func(t *testing.T) {
+		// add second rule
+		ip := net.ParseIP("10.20.0.3")
+		port := &fw.Port{Values: []int{5353}}
+		_, err = manager.AddFiltering(ip, "udp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept Fake DNS traffic")
+		require.NoError(t, err, "failed to add rule")
+
+		err = manager.Reset()
+		require.NoError(t, err, "failed to reset")
+
+		ok, err := ipv4Client.ChainExists("filter", ChainInputFilterName)
+		require.NoError(t, err, "failed check chain exists")
+
+		if ok {
+			require.NoErrorf(t, err, "chain '%v' still exists after Reset", ChainInputFilterName)
+		}
+	})
+}
+
+func TestIptablesManagerIPSet(t *testing.T) {
+	ipv4Client, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
+	require.NoError(t, err)
+
+	mock := &iFaceMock{
+		NameFunc: func() string {
+			return "lo"
+		},
+		AddressFunc: func() iface.WGAddress {
+			return iface.WGAddress{
+				IP: net.ParseIP("10.20.0.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("10.20.0.0"),
+					Mask: net.IPv4Mask(255, 255, 255, 0),
+				},
+			}
+		},
+	}
+
+	// just check on the local interface
+	manager, err := Create(mock)
+	require.NoError(t, err)
+
+	time.Sleep(time.Second)
+
+	defer func() {
+		err := manager.Reset()
+		require.NoError(t, err, "clear the manager state")
+
+		time.Sleep(time.Second)
+	}()
+
+	var rule1 fw.Rule
+	t.Run("add first rule with set", func(t *testing.T) {
+		ip := net.ParseIP("10.20.0.2")
+		port := &fw.Port{Values: []int{8080}}
+		rule1, err = manager.AddFiltering(
+			ip, "tcp", nil, port, fw.RuleDirectionOUT,
+			fw.ActionAccept, "default", "accept HTTP traffic",
+		)
+		require.NoError(t, err, "failed to add rule")
+
+		checkRuleSpecs(t, ipv4Client, ChainOutputFilterName, true, rule1.(*Rule).specs...)
+		require.Equal(t, rule1.(*Rule).ipsetName, "default-dport", "ipset name must be set")
+		require.Equal(t, rule1.(*Rule).ip, "10.20.0.2", "ipset IP must be set")
+	})
+
+	var rule2 fw.Rule
+	t.Run("add second rule", func(t *testing.T) {
+		ip := net.ParseIP("10.20.0.3")
+		port := &fw.Port{
+			Values: []int{443},
+		}
+		rule2, err = manager.AddFiltering(
+			ip, "tcp", port, nil, fw.RuleDirectionIN, fw.ActionAccept,
+			"default", "accept HTTPS traffic from ports range",
+		)
+		require.NoError(t, err, "failed to add rule")
+		require.Equal(t, rule2.(*Rule).ipsetName, "default-sport", "ipset name must be set")
+		require.Equal(t, rule2.(*Rule).ip, "10.20.0.3", "ipset IP must be set")
+	})
+
+	t.Run("delete first rule", func(t *testing.T) {
+		err := manager.DeleteRule(rule1)
+		require.NoError(t, err, "failed to delete rule")
+
+		require.NotContains(t, manager.rulesets, rule1.(*Rule).ruleID, "rule must be removed form the ruleset index")
+	})
+
+	t.Run("delete second rule", func(t *testing.T) {
+		err := manager.DeleteRule(rule2)
+		require.NoError(t, err, "failed to delete rule")
+
+		require.Empty(t, manager.rulesets, "rulesets index after removed second rule must be empty")
+	})
+
+	t.Run("reset check", func(t *testing.T) {
+		err = manager.Reset()
+		require.NoError(t, err, "failed to reset")
+	})
+}
+
+func checkRuleSpecs(t *testing.T, ipv4Client *iptables.IPTables, chainName string, mustExists bool, rulespec ...string) {
+	exists, err := ipv4Client.Exists("filter", chainName, rulespec...)
+	require.NoError(t, err, "failed to check rule")
+	require.Falsef(t, !exists && mustExists, "rule '%v' does not exist", rulespec)
+	require.Falsef(t, exists && !mustExists, "rule '%v' exist", rulespec)
+}
+
+func TestIptablesCreatePerformance(t *testing.T) {
+	mock := &iFaceMock{
+		NameFunc: func() string {
+			return "lo"
+		},
+		AddressFunc: func() iface.WGAddress {
+			return iface.WGAddress{
+				IP: net.ParseIP("10.20.0.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("10.20.0.0"),
+					Mask: net.IPv4Mask(255, 255, 255, 0),
+				},
+			}
+		},
+	}
+
+	for _, testMax := range []int{10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} {
+		t.Run(fmt.Sprintf("Testing %d rules", testMax), func(t *testing.T) {
+			// just check on the local interface
+			manager, err := Create(mock)
+			require.NoError(t, err)
+			time.Sleep(time.Second)
+
+			defer func() {
+				err := manager.Reset()
+				require.NoError(t, err, "clear the manager state")
+
+				time.Sleep(time.Second)
+			}()
+
+			_, err = manager.client(net.ParseIP("10.20.0.100"))
+			require.NoError(t, err)
+
+			ip := net.ParseIP("10.20.0.100")
+			start := time.Now()
+			for i := 0; i < testMax; i++ {
+				port := &fw.Port{Values: []int{1000 + i}}
+				if i%2 == 0 {
+					_, err = manager.AddFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
+				} else {
+					_, err = manager.AddFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
+				}
+
+				require.NoError(t, err, "failed to add rule")
+			}
+			t.Logf("execution avg per rule: %s", time.Since(start)/time.Duration(testMax))
+		})
+	}
+}

client/firewall/iptables/rule.go

@@ -0,0 +1,17 @@
+package iptables
+
+// Rule to handle management of rules
+type Rule struct {
+	ruleID    string
+	ipsetName string
+
+	specs []string
+	ip    string
+	dst   bool
+	v6    bool
+}
+
+// GetRuleID returns the rule id
+func (r *Rule) GetRuleID() string {
+	return r.ruleID
+}

client/firewall/nftables/manager_linux.go

@@ -0,0 +1,758 @@
+package nftables
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"net"
+	"net/netip"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/google/nftables"
+	"github.com/google/nftables/expr"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
+
+	fw "github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/iface"
+)
+
+const (
+	// FilterTableName is the name of the table that is used for filtering by the Netbird client
+	FilterTableName = "netbird-acl"
+
+	// FilterInputChainName is the name of the chain that is used for filtering incoming packets
+	FilterInputChainName = "netbird-acl-input-filter"
+
+	// FilterOutputChainName is the name of the chain that is used for filtering outgoing packets
+	FilterOutputChainName = "netbird-acl-output-filter"
+)
+
+var anyIP = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+
+// Manager of iptables firewall
+type Manager struct {
+	mutex sync.Mutex
+
+	rConn     *nftables.Conn
+	sConn     *nftables.Conn
+	tableIPv4 *nftables.Table
+	tableIPv6 *nftables.Table
+
+	filterInputChainIPv4  *nftables.Chain
+	filterOutputChainIPv4 *nftables.Chain
+
+	filterInputChainIPv6  *nftables.Chain
+	filterOutputChainIPv6 *nftables.Chain
+
+	rulesetManager *rulesetManager
+	setRemovedIPs  map[string]struct{}
+	setRemoved     map[string]*nftables.Set
+
+	wgIface iFaceMapper
+}
+
+// iFaceMapper defines subset methods of interface required for manager
+type iFaceMapper interface {
+	Name() string
+	Address() iface.WGAddress
+}
+
+// Create nftables firewall manager
+func Create(wgIface iFaceMapper) (*Manager, error) {
+	// sConn is used for creating sets and adding/removing elements from them
+	// it's differ then rConn (which does create new conn for each flush operation)
+	// and is permanent. Using same connection for booth type of operations
+	// overloads netlink with high amount of rules ( > 10000)
+	sConn, err := nftables.New(nftables.AsLasting())
+	if err != nil {
+		return nil, err
+	}
+
+	m := &Manager{
+		rConn: &nftables.Conn{},
+		sConn: sConn,
+
+		rulesetManager: newRuleManager(),
+		setRemovedIPs:  map[string]struct{}{},
+		setRemoved:     map[string]*nftables.Set{},
+
+		wgIface: wgIface,
+	}
+
+	if err := m.Reset(); err != nil {
+		return nil, err
+	}
+
+	return m, nil
+}
+
+// AddFiltering rule to the firewall
+//
+// If comment argument is empty firewall manager should set
+// rule ID as comment for the rule
+func (m *Manager) AddFiltering(
+	ip net.IP,
+	proto fw.Protocol,
+	sPort *fw.Port,
+	dPort *fw.Port,
+	direction fw.RuleDirection,
+	action fw.Action,
+	ipsetName string,
+	comment string,
+) (fw.Rule, error) {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	var (
+		err   error
+		ipset *nftables.Set
+		table *nftables.Table
+		chain *nftables.Chain
+	)
+
+	if direction == fw.RuleDirectionOUT {
+		table, chain, err = m.chain(
+			ip,
+			FilterOutputChainName,
+			nftables.ChainHookOutput,
+			nftables.ChainPriorityFilter,
+			nftables.ChainTypeFilter)
+	} else {
+		table, chain, err = m.chain(
+			ip,
+			FilterInputChainName,
+			nftables.ChainHookInput,
+			nftables.ChainPriorityFilter,
+			nftables.ChainTypeFilter)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	rawIP := ip.To4()
+	if rawIP == nil {
+		rawIP = ip.To16()
+	}
+
+	rulesetID := m.getRulesetID(ip, proto, sPort, dPort, direction, action, ipsetName)
+
+	if ipsetName != "" {
+		// if we already have set with given name, just add ip to the set
+		// and return rule with new ID in other case let's create rule
+		// with fresh created set and set element
+
+		var isSetNew bool
+		ipset, err = m.rConn.GetSetByName(table, ipsetName)
+		if err != nil {
+			if ipset, err = m.createSet(table, rawIP, ipsetName); err != nil {
+				return nil, fmt.Errorf("get set name: %v", err)
+			}
+			isSetNew = true
+		}
+
+		if err := m.sConn.SetAddElements(ipset, []nftables.SetElement{{Key: rawIP}}); err != nil {
+			return nil, fmt.Errorf("add set element for the first time: %v", err)
+		}
+		if err := m.sConn.Flush(); err != nil {
+			return nil, fmt.Errorf("flush add elements: %v", err)
+		}
+
+		if !isSetNew {
+			// if we already have nftables rules with set for given direction
+			// just add new rule to the ruleset and return new fw.Rule object
+
+			if ruleset, ok := m.rulesetManager.getRuleset(rulesetID); ok {
+				return m.rulesetManager.addRule(ruleset, rawIP)
+			}
+			// if ipset exists but it is not linked to rule for given direction
+			// create new rule for direction and bind ipset to it later
+		}
+	}
+
+	ifaceKey := expr.MetaKeyIIFNAME
+	if direction == fw.RuleDirectionOUT {
+		ifaceKey = expr.MetaKeyOIFNAME
+	}
+	expressions := []expr.Any{
+		&expr.Meta{Key: ifaceKey, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(m.wgIface.Name()),
+		},
+	}
+
+	if proto != "all" {
+		expressions = append(expressions, &expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseNetworkHeader,
+			Offset:       uint32(9),
+			Len:          uint32(1),
+		})
+
+		var protoData []byte
+		switch proto {
+		case fw.ProtocolTCP:
+			protoData = []byte{unix.IPPROTO_TCP}
+		case fw.ProtocolUDP:
+			protoData = []byte{unix.IPPROTO_UDP}
+		case fw.ProtocolICMP:
+			protoData = []byte{unix.IPPROTO_ICMP}
+		default:
+			return nil, fmt.Errorf("unsupported protocol: %s", proto)
+		}
+		expressions = append(expressions, &expr.Cmp{
+			Register: 1,
+			Op:       expr.CmpOpEq,
+			Data:     protoData,
+		})
+	}
+
+	// check if rawIP contains zeroed IPv4 0.0.0.0 or same IPv6 value
+	// in that case not add IP match expression into the rule definition
+	if !bytes.HasPrefix(anyIP, rawIP) {
+		// source address position
+		addrLen := uint32(len(rawIP))
+		addrOffset := uint32(12)
+		if addrLen == 16 {
+			addrOffset = 8
+		}
+
+		// change to destination address position if need
+		if direction == fw.RuleDirectionOUT {
+			addrOffset += addrLen
+		}
+
+		expressions = append(expressions,
+			&expr.Payload{
+				DestRegister: 1,
+				Base:         expr.PayloadBaseNetworkHeader,
+				Offset:       addrOffset,
+				Len:          addrLen,
+			},
+		)
+		// add individual IP for match if no ipset defined
+		if ipset == nil {
+			expressions = append(expressions,
+				&expr.Cmp{
+					Op:       expr.CmpOpEq,
+					Register: 1,
+					Data:     rawIP,
+				},
+			)
+		} else {
+			expressions = append(expressions,
+				&expr.Lookup{
+					SourceRegister: 1,
+					SetName:        ipsetName,
+					SetID:          ipset.ID,
+				},
+			)
+		}
+	}
+
+	if sPort != nil && len(sPort.Values) != 0 {
+		expressions = append(expressions,
+			&expr.Payload{
+				DestRegister: 1,
+				Base:         expr.PayloadBaseTransportHeader,
+				Offset:       0,
+				Len:          2,
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpEq,
+				Register: 1,
+				Data:     encodePort(*sPort),
+			},
+		)
+	}
+
+	if dPort != nil && len(dPort.Values) != 0 {
+		expressions = append(expressions,
+			&expr.Payload{
+				DestRegister: 1,
+				Base:         expr.PayloadBaseTransportHeader,
+				Offset:       2,
+				Len:          2,
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpEq,
+				Register: 1,
+				Data:     encodePort(*dPort),
+			},
+		)
+	}
+
+	if action == fw.ActionAccept {
+		expressions = append(expressions, &expr.Verdict{Kind: expr.VerdictAccept})
+	} else {
+		expressions = append(expressions, &expr.Verdict{Kind: expr.VerdictDrop})
+	}
+
+	userData := []byte(strings.Join([]string{rulesetID, comment}, " "))
+
+	rule := m.rConn.InsertRule(&nftables.Rule{
+		Table:    table,
+		Chain:    chain,
+		Position: 0,
+		Exprs:    expressions,
+		UserData: userData,
+	})
+	if err := m.rConn.Flush(); err != nil {
+		return nil, fmt.Errorf("flush insert rule: %v", err)
+	}
+
+	ruleset := m.rulesetManager.createRuleset(rulesetID, rule, ipset)
+	return m.rulesetManager.addRule(ruleset, rawIP)
+}
+
+// getRulesetID returns ruleset ID based on given parameters
+func (m *Manager) getRulesetID(
+	ip net.IP,
+	proto fw.Protocol,
+	sPort *fw.Port,
+	dPort *fw.Port,
+	direction fw.RuleDirection,
+	action fw.Action,
+	ipsetName string,
+) string {
+	rulesetID := ":" + strconv.Itoa(int(direction)) + ":"
+	if sPort != nil {
+		rulesetID += sPort.String()
+	}
+	rulesetID += ":"
+	if dPort != nil {
+		rulesetID += dPort.String()
+	}
+	rulesetID += ":"
+	rulesetID += strconv.Itoa(int(action))
+	if ipsetName == "" {
+		return "ip:" + ip.String() + rulesetID
+	}
+	return "set:" + ipsetName + rulesetID
+}
+
+// createSet in given table by name
+func (m *Manager) createSet(
+	table *nftables.Table,
+	rawIP []byte,
+	name string,
+) (*nftables.Set, error) {
+	keyType := nftables.TypeIPAddr
+	if len(rawIP) == 16 {
+		keyType = nftables.TypeIP6Addr
+	}
+	// else we create new ipset and continue creating rule
+	ipset := &nftables.Set{
+		Name:    name,
+		Table:   table,
+		Dynamic: true,
+		KeyType: keyType,
+	}
+
+	if err := m.rConn.AddSet(ipset, nil); err != nil {
+		return nil, fmt.Errorf("create set: %v", err)
+	}
+
+	if err := m.rConn.Flush(); err != nil {
+		return nil, fmt.Errorf("flush created set: %v", err)
+	}
+
+	return ipset, nil
+}
+
+// chain returns the chain for the given IP address with specific settings
+func (m *Manager) chain(
+	ip net.IP,
+	name string,
+	hook nftables.ChainHook,
+	priority nftables.ChainPriority,
+	cType nftables.ChainType,
+) (*nftables.Table, *nftables.Chain, error) {
+	var err error
+
+	getChain := func(c *nftables.Chain, tf nftables.TableFamily) (*nftables.Chain, error) {
+		if c != nil {
+			return c, nil
+		}
+		return m.createChainIfNotExists(tf, name, hook, priority, cType)
+	}
+
+	if ip.To4() != nil {
+		if name == FilterInputChainName {
+			m.filterInputChainIPv4, err = getChain(m.filterInputChainIPv4, nftables.TableFamilyIPv4)
+			return m.tableIPv4, m.filterInputChainIPv4, err
+		}
+		m.filterOutputChainIPv4, err = getChain(m.filterOutputChainIPv4, nftables.TableFamilyIPv4)
+		return m.tableIPv4, m.filterOutputChainIPv4, err
+	}
+	if name == FilterInputChainName {
+		m.filterInputChainIPv6, err = getChain(m.filterInputChainIPv6, nftables.TableFamilyIPv6)
+		return m.tableIPv4, m.filterInputChainIPv6, err
+	}
+	m.filterOutputChainIPv6, err = getChain(m.filterOutputChainIPv6, nftables.TableFamilyIPv6)
+	return m.tableIPv4, m.filterOutputChainIPv6, err
+}
+
+// table returns the table for the given family of the IP address
+func (m *Manager) table(family nftables.TableFamily) (*nftables.Table, error) {
+	if family == nftables.TableFamilyIPv4 {
+		if m.tableIPv4 != nil {
+			return m.tableIPv4, nil
+		}
+
+		table, err := m.createTableIfNotExists(nftables.TableFamilyIPv4)
+		if err != nil {
+			return nil, err
+		}
+		m.tableIPv4 = table
+		return m.tableIPv4, nil
+	}
+
+	if m.tableIPv6 != nil {
+		return m.tableIPv6, nil
+	}
+
+	table, err := m.createTableIfNotExists(nftables.TableFamilyIPv6)
+	if err != nil {
+		return nil, err
+	}
+	m.tableIPv6 = table
+	return m.tableIPv6, nil
+}
+
+func (m *Manager) createTableIfNotExists(family nftables.TableFamily) (*nftables.Table, error) {
+	tables, err := m.rConn.ListTablesOfFamily(family)
+	if err != nil {
+		return nil, fmt.Errorf("list of tables: %w", err)
+	}
+
+	for _, t := range tables {
+		if t.Name == FilterTableName {
+			return t, nil
+		}
+	}
+
+	table := m.rConn.AddTable(&nftables.Table{Name: FilterTableName, Family: nftables.TableFamilyIPv4})
+	if err := m.rConn.Flush(); err != nil {
+		return nil, err
+	}
+	return table, nil
+}
+
+func (m *Manager) createChainIfNotExists(
+	family nftables.TableFamily,
+	name string,
+	hooknum nftables.ChainHook,
+	priority nftables.ChainPriority,
+	chainType nftables.ChainType,
+) (*nftables.Chain, error) {
+	table, err := m.table(family)
+	if err != nil {
+		return nil, err
+	}
+
+	chains, err := m.rConn.ListChainsOfTableFamily(family)
+	if err != nil {
+		return nil, fmt.Errorf("list of chains: %w", err)
+	}
+
+	for _, c := range chains {
+		if c.Name == name && c.Table.Name == table.Name {
+			return c, nil
+		}
+	}
+
+	polAccept := nftables.ChainPolicyAccept
+	chain := &nftables.Chain{
+		Name:     name,
+		Table:    table,
+		Hooknum:  hooknum,
+		Priority: priority,
+		Type:     chainType,
+		Policy:   &polAccept,
+	}
+
+	chain = m.rConn.AddChain(chain)
+
+	ifaceKey := expr.MetaKeyIIFNAME
+	shiftDSTAddr := 0
+	if name == FilterOutputChainName {
+		ifaceKey = expr.MetaKeyOIFNAME
+		shiftDSTAddr = 1
+	}
+
+	expressions := []expr.Any{
+		&expr.Meta{Key: ifaceKey, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(m.wgIface.Name()),
+		},
+	}
+
+	mask, _ := netip.AddrFromSlice(m.wgIface.Address().Network.Mask)
+	if m.wgIface.Address().IP.To4() == nil {
+		ip, _ := netip.AddrFromSlice(m.wgIface.Address().Network.IP.To16())
+		expressions = append(expressions,
+			&expr.Payload{
+				DestRegister: 2,
+				Base:         expr.PayloadBaseNetworkHeader,
+				Offset:       uint32(8 + (16 * shiftDSTAddr)),
+				Len:          16,
+			},
+			&expr.Bitwise{
+				SourceRegister: 2,
+				DestRegister:   2,
+				Len:            16,
+				Xor:            []byte{0x0, 0x0, 0x0, 0x0},
+				Mask:           mask.Unmap().AsSlice(),
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpNeq,
+				Register: 2,
+				Data:     ip.Unmap().AsSlice(),
+			},
+			&expr.Verdict{Kind: expr.VerdictAccept},
+		)
+	} else {
+		ip, _ := netip.AddrFromSlice(m.wgIface.Address().Network.IP.To4())
+		expressions = append(expressions,
+			&expr.Payload{
+				DestRegister: 2,
+				Base:         expr.PayloadBaseNetworkHeader,
+				Offset:       uint32(12 + (4 * shiftDSTAddr)),
+				Len:          4,
+			},
+			&expr.Bitwise{
+				SourceRegister: 2,
+				DestRegister:   2,
+				Len:            4,
+				Xor:            []byte{0x0, 0x0, 0x0, 0x0},
+				Mask:           m.wgIface.Address().Network.Mask,
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpNeq,
+				Register: 2,
+				Data:     ip.Unmap().AsSlice(),
+			},
+			&expr.Verdict{Kind: expr.VerdictAccept},
+		)
+	}
+
+	_ = m.rConn.AddRule(&nftables.Rule{
+		Table: table,
+		Chain: chain,
+		Exprs: expressions,
+	})
+
+	expressions = []expr.Any{
+		&expr.Meta{Key: ifaceKey, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname(m.wgIface.Name()),
+		},
+		&expr.Verdict{Kind: expr.VerdictDrop},
+	}
+	_ = m.rConn.AddRule(&nftables.Rule{
+		Table: table,
+		Chain: chain,
+		Exprs: expressions,
+	})
+
+	if err := m.rConn.Flush(); err != nil {
+		return nil, err
+	}
+
+	return chain, nil
+}
+
+// DeleteRule from the firewall by rule definition
+func (m *Manager) DeleteRule(rule fw.Rule) error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	nativeRule, ok := rule.(*Rule)
+	if !ok {
+		return fmt.Errorf("invalid rule type")
+	}
+
+	if nativeRule.nftRule == nil {
+		return nil
+	}
+
+	if nativeRule.nftSet != nil {
+		// call twice of delete set element raises error
+		// so we need to check if element is already removed
+		key := fmt.Sprintf("%s:%v", nativeRule.nftSet.Name, nativeRule.ip)
+		if _, ok := m.setRemovedIPs[key]; !ok {
+			err := m.sConn.SetDeleteElements(nativeRule.nftSet, []nftables.SetElement{{Key: nativeRule.ip}})
+			if err != nil {
+				log.Errorf("delete elements for set %q: %v", nativeRule.nftSet.Name, err)
+			}
+			if err := m.sConn.Flush(); err != nil {
+				return err
+			}
+			m.setRemovedIPs[key] = struct{}{}
+		}
+	}
+
+	if m.rulesetManager.deleteRule(nativeRule) {
+		// deleteRule indicates that we still have IP in the ruleset
+		// it means we should not remove the nftables rule but need to update set
+		// so we prepare IP to be removed from set on the next flush call
+		return nil
+	}
+
+	// ruleset doesn't contain IP anymore (or contains only one), remove nft rule
+	if err := m.rConn.DelRule(nativeRule.nftRule); err != nil {
+		log.Errorf("failed to delete rule: %v", err)
+	}
+	if err := m.rConn.Flush(); err != nil {
+		return err
+	}
+	nativeRule.nftRule = nil
+
+	if nativeRule.nftSet != nil {
+		if _, ok := m.setRemoved[nativeRule.nftSet.Name]; !ok {
+			m.setRemoved[nativeRule.nftSet.Name] = nativeRule.nftSet
+		}
+		nativeRule.nftSet = nil
+	}
+
+	return nil
+}
+
+// Reset firewall to the default state
+func (m *Manager) Reset() error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	chains, err := m.rConn.ListChains()
+	if err != nil {
+		return fmt.Errorf("list of chains: %w", err)
+	}
+	for _, c := range chains {
+		if c.Name == FilterInputChainName || c.Name == FilterOutputChainName {
+			m.rConn.DelChain(c)
+		}
+	}
+
+	tables, err := m.rConn.ListTables()
+	if err != nil {
+		return fmt.Errorf("list of tables: %w", err)
+	}
+	for _, t := range tables {
+		if t.Name == FilterTableName {
+			m.rConn.DelTable(t)
+		}
+	}
+
+	return m.rConn.Flush()
+}
+
+// Flush rule/chain/set operations from the buffer
+//
+// Method also get all rules after flush and refreshes handle values in the rulesets
+func (m *Manager) Flush() error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	if err := m.flushWithBackoff(); err != nil {
+		return err
+	}
+
+	// set must be removed after flush rule changes
+	// otherwise we will get error
+	for _, s := range m.setRemoved {
+		m.rConn.FlushSet(s)
+		m.rConn.DelSet(s)
+	}
+
+	if len(m.setRemoved) > 0 {
+		if err := m.flushWithBackoff(); err != nil {
+			return err
+		}
+	}
+
+	m.setRemovedIPs = map[string]struct{}{}
+	m.setRemoved = map[string]*nftables.Set{}
+
+	if err := m.refreshRuleHandles(m.tableIPv4, m.filterInputChainIPv4); err != nil {
+		log.Errorf("failed to refresh rule handles ipv4 input chain: %v", err)
+	}
+
+	if err := m.refreshRuleHandles(m.tableIPv4, m.filterOutputChainIPv4); err != nil {
+		log.Errorf("failed to refresh rule handles IPv4 output chain: %v", err)
+	}
+
+	if err := m.refreshRuleHandles(m.tableIPv6, m.filterInputChainIPv6); err != nil {
+		log.Errorf("failed to refresh rule handles IPv6 input chain: %v", err)
+	}
+
+	if err := m.refreshRuleHandles(m.tableIPv6, m.filterOutputChainIPv6); err != nil {
+		log.Errorf("failed to refresh rule handles IPv6 output chain: %v", err)
+	}
+
+	return nil
+}
+
+func (m *Manager) flushWithBackoff() (err error) {
+	backoff := 4
+	backoffTime := 1000 * time.Millisecond
+	for i := 0; ; i++ {
+		err = m.rConn.Flush()
+		if err != nil {
+			if !strings.Contains(err.Error(), "busy") {
+				return
+			}
+			log.Error("failed to flush nftables, retrying...")
+			if i == backoff-1 {
+				return err
+			}
+			time.Sleep(backoffTime)
+			backoffTime = backoffTime * 2
+			continue
+		}
+		break
+	}
+	return
+}
+
+func (m *Manager) refreshRuleHandles(table *nftables.Table, chain *nftables.Chain) error {
+	if table == nil || chain == nil {
+		return nil
+	}
+
+	list, err := m.rConn.GetRules(table, chain)
+	if err != nil {
+		return err
+	}
+
+	for _, rule := range list {
+		if len(rule.UserData) != 0 {
+			if err := m.rulesetManager.setNftRuleHandle(rule); err != nil {
+				log.Errorf("failed to set rule handle: %v", err)
+			}
+		}
+	}
+
+	return nil
+}
+
+func encodePort(port fw.Port) []byte {
+	bs := make([]byte, 2)
+	binary.BigEndian.PutUint16(bs, uint16(port.Values[0]))
+	return bs
+}
+
+func ifname(n string) []byte {
+	b := make([]byte, 16)
+	copy(b, []byte(n+"\x00"))
+	return b
+}

client/firewall/nftables/manager_linux_test.go

@@ -0,0 +1,207 @@
+package nftables
+
+import (
+	"fmt"
+	"net"
+	"net/netip"
+	"testing"
+	"time"
+
+	"github.com/google/nftables"
+	"github.com/google/nftables/expr"
+	"github.com/stretchr/testify/require"
+	"golang.org/x/sys/unix"
+
+	fw "github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/iface"
+)
+
+// iFaceMapper defines subset methods of interface required for manager
+type iFaceMock struct {
+	NameFunc    func() string
+	AddressFunc func() iface.WGAddress
+}
+
+func (i *iFaceMock) Name() string {
+	if i.NameFunc != nil {
+		return i.NameFunc()
+	}
+	panic("NameFunc is not set")
+}
+
+func (i *iFaceMock) Address() iface.WGAddress {
+	if i.AddressFunc != nil {
+		return i.AddressFunc()
+	}
+	panic("AddressFunc is not set")
+}
+
+func TestNftablesManager(t *testing.T) {
+	mock := &iFaceMock{
+		NameFunc: func() string {
+			return "lo"
+		},
+		AddressFunc: func() iface.WGAddress {
+			return iface.WGAddress{
+				IP: net.ParseIP("100.96.0.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("100.96.0.0"),
+					Mask: net.IPv4Mask(255, 255, 255, 0),
+				},
+			}
+		},
+	}
+
+	// just check on the local interface
+	manager, err := Create(mock)
+	require.NoError(t, err)
+	time.Sleep(time.Second * 3)
+
+	defer func() {
+		err = manager.Reset()
+		require.NoError(t, err, "failed to reset")
+		time.Sleep(time.Second)
+	}()
+
+	ip := net.ParseIP("100.96.0.1")
+
+	testClient := &nftables.Conn{}
+
+	rule, err := manager.AddFiltering(
+		ip,
+		fw.ProtocolTCP,
+		nil,
+		&fw.Port{Values: []int{53}},
+		fw.RuleDirectionIN,
+		fw.ActionDrop,
+		"",
+		"",
+	)
+	require.NoError(t, err, "failed to add rule")
+
+	err = manager.Flush()
+	require.NoError(t, err, "failed to flush")
+
+	rules, err := testClient.GetRules(manager.tableIPv4, manager.filterInputChainIPv4)
+	require.NoError(t, err, "failed to get rules")
+
+	// test expectations:
+	// 1) regular rule
+	// 2) "accept extra routed traffic rule" for the interface
+	// 3) "drop all rule" for the interface
+	require.Len(t, rules, 3, "expected 3 rules")
+
+	ipToAdd, _ := netip.AddrFromSlice(ip)
+	add := ipToAdd.Unmap()
+	expectedExprs := []expr.Any{
+		&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     ifname("lo"),
+		},
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseNetworkHeader,
+			Offset:       uint32(9),
+			Len:          uint32(1),
+		},
+		&expr.Cmp{
+			Register: 1,
+			Op:       expr.CmpOpEq,
+			Data:     []byte{unix.IPPROTO_TCP},
+		},
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseNetworkHeader,
+			Offset:       12,
+			Len:          4,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     add.AsSlice(),
+		},
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseTransportHeader,
+			Offset:       2,
+			Len:          2,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     []byte{0, 53},
+		},
+		&expr.Verdict{Kind: expr.VerdictDrop},
+	}
+	require.ElementsMatch(t, rules[0].Exprs, expectedExprs, "expected the same expressions")
+
+	err = manager.DeleteRule(rule)
+	require.NoError(t, err, "failed to delete rule")
+
+	err = manager.Flush()
+	require.NoError(t, err, "failed to flush")
+
+	rules, err = testClient.GetRules(manager.tableIPv4, manager.filterInputChainIPv4)
+	require.NoError(t, err, "failed to get rules")
+	// test expectations:
+	// 1) "accept extra routed traffic rule" for the interface
+	// 2) "drop all rule" for the interface
+	require.Len(t, rules, 2, "expected 2 rules after deleteion")
+
+	err = manager.Reset()
+	require.NoError(t, err, "failed to reset")
+}
+
+func TestNFtablesCreatePerformance(t *testing.T) {
+	mock := &iFaceMock{
+		NameFunc: func() string {
+			return "lo"
+		},
+		AddressFunc: func() iface.WGAddress {
+			return iface.WGAddress{
+				IP: net.ParseIP("100.96.0.1"),
+				Network: &net.IPNet{
+					IP:   net.ParseIP("100.96.0.0"),
+					Mask: net.IPv4Mask(255, 255, 255, 0),
+				},
+			}
+		},
+	}
+
+	for _, testMax := range []int{10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} {
+		t.Run(fmt.Sprintf("Testing %d rules", testMax), func(t *testing.T) {
+			// just check on the local interface
+			manager, err := Create(mock)
+			require.NoError(t, err)
+			time.Sleep(time.Second * 3)
+
+			defer func() {
+				if err := manager.Reset(); err != nil {
+					t.Errorf("clear the manager state: %v", err)
+				}
+				time.Sleep(time.Second)
+			}()
+
+			ip := net.ParseIP("10.20.0.100")
+			start := time.Now()
+			for i := 0; i < testMax; i++ {
+				port := &fw.Port{Values: []int{1000 + i}}
+				if i%2 == 0 {
+					_, err = manager.AddFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
+				} else {
+					_, err = manager.AddFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
+				}
+				require.NoError(t, err, "failed to add rule")
+
+				if i%100 == 0 {
+					err = manager.Flush()
+					require.NoError(t, err, "failed to flush")
+				}
+			}
+
+			t.Logf("execution avg per rule: %s", time.Since(start)/time.Duration(testMax))
+		})
+	}
+}

client/firewall/nftables/rule_linux.go

@@ -0,0 +1,19 @@
+package nftables
+
+import (
+	"github.com/google/nftables"
+)
+
+// Rule to handle management of rules
+type Rule struct {
+	nftRule *nftables.Rule
+	nftSet  *nftables.Set
+
+	ruleID string
+	ip     []byte
+}
+
+// GetRuleID returns the rule id
+func (r *Rule) GetRuleID() string {
+	return r.ruleID
+}

client/firewall/nftables/ruleset_linux.go

@@ -0,0 +1,115 @@
+package nftables
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/google/nftables"
+	"github.com/rs/xid"
+)
+
+// nftRuleset links native firewall rule and ipset to ACL generated rules
+type nftRuleset struct {
+	nftRule     *nftables.Rule
+	nftSet      *nftables.Set
+	issuedRules map[string]*Rule
+	rulesetID   string
+}
+
+type rulesetManager struct {
+	rulesets map[string]*nftRuleset
+
+	nftSetName2rulesetID   map[string]string
+	issuedRuleID2rulesetID map[string]string
+}
+
+func newRuleManager() *rulesetManager {
+	return &rulesetManager{
+		rulesets: map[string]*nftRuleset{},
+
+		nftSetName2rulesetID:   map[string]string{},
+		issuedRuleID2rulesetID: map[string]string{},
+	}
+}
+
+func (r *rulesetManager) getRuleset(rulesetID string) (*nftRuleset, bool) {
+	ruleset, ok := r.rulesets[rulesetID]
+	return ruleset, ok
+}
+
+func (r *rulesetManager) createRuleset(
+	rulesetID string,
+	nftRule *nftables.Rule,
+	nftSet *nftables.Set,
+) *nftRuleset {
+	ruleset := nftRuleset{
+		rulesetID:   rulesetID,
+		nftRule:     nftRule,
+		nftSet:      nftSet,
+		issuedRules: map[string]*Rule{},
+	}
+	r.rulesets[ruleset.rulesetID] = &ruleset
+	if nftSet != nil {
+		r.nftSetName2rulesetID[nftSet.Name] = ruleset.rulesetID
+	}
+	return &ruleset
+}
+
+func (r *rulesetManager) addRule(
+	ruleset *nftRuleset,
+	ip []byte,
+) (*Rule, error) {
+	if _, ok := r.rulesets[ruleset.rulesetID]; !ok {
+		return nil, fmt.Errorf("ruleset not found")
+	}
+
+	rule := Rule{
+		nftRule: ruleset.nftRule,
+		nftSet:  ruleset.nftSet,
+		ruleID:  xid.New().String(),
+		ip:      ip,
+	}
+
+	ruleset.issuedRules[rule.ruleID] = &rule
+	r.issuedRuleID2rulesetID[rule.ruleID] = ruleset.rulesetID
+
+	return &rule, nil
+}
+
+// deleteRule from ruleset and returns true if contains other rules
+func (r *rulesetManager) deleteRule(rule *Rule) bool {
+	rulesetID, ok := r.issuedRuleID2rulesetID[rule.ruleID]
+	if !ok {
+		return false
+	}
+
+	ruleset := r.rulesets[rulesetID]
+	if ruleset.nftRule == nil {
+		return false
+	}
+	delete(r.issuedRuleID2rulesetID, rule.ruleID)
+	delete(ruleset.issuedRules, rule.ruleID)
+
+	if len(ruleset.issuedRules) == 0 {
+		delete(r.rulesets, ruleset.rulesetID)
+		if rule.nftSet != nil {
+			delete(r.nftSetName2rulesetID, rule.nftSet.Name)
+		}
+		return false
+	}
+	return true
+}
+
+// setNftRuleHandle finds rule by userdata which contains rulesetID and updates it's handle number
+//
+// This is important to do, because after we add rule to the nftables we can't update it until
+// we set correct handle value to it.
+func (r *rulesetManager) setNftRuleHandle(nftRule *nftables.Rule) error {
+	split := bytes.Split(nftRule.UserData, []byte(" "))
+	ruleset, ok := r.rulesets[string(split[0])]
+	if !ok {
+		return fmt.Errorf("ruleset not found")
+	}
+	*ruleset.nftRule = *nftRule
+	return nil
+}

client/firewall/nftables/ruleset_linux_test.go

@@ -0,0 +1,122 @@
+package nftables
+
+import (
+	"testing"
+
+	"github.com/google/nftables"
+	"github.com/stretchr/testify/require"
+)
+
+func TestRulesetManager_createRuleset(t *testing.T) {
+	// Create a ruleset manager.
+	rulesetManager := newRuleManager()
+
+	// Create a ruleset.
+	rulesetID := "ruleset-1"
+	nftRule := nftables.Rule{
+		UserData: []byte(rulesetID),
+	}
+	ruleset := rulesetManager.createRuleset(rulesetID, &nftRule, nil)
+	require.NotNil(t, ruleset, "createRuleset() failed")
+	require.Equal(t, ruleset.rulesetID, rulesetID, "rulesetID is incorrect")
+	require.Equal(t, ruleset.nftRule, &nftRule, "nftRule is incorrect")
+}
+
+func TestRulesetManager_addRule(t *testing.T) {
+	// Create a ruleset manager.
+	rulesetManager := newRuleManager()
+
+	// Create a ruleset.
+	rulesetID := "ruleset-1"
+	nftRule := nftables.Rule{}
+	ruleset := rulesetManager.createRuleset(rulesetID, &nftRule, nil)
+
+	// Add a rule to the ruleset.
+	ip := []byte("192.168.1.1")
+	rule, err := rulesetManager.addRule(ruleset, ip)
+	require.NoError(t, err, "addRule() failed")
+	require.NotNil(t, rule, "rule should not be nil")
+	require.NotEqual(t, rule.ruleID, "ruleID is empty")
+	require.EqualValues(t, rule.ip, ip, "ip is incorrect")
+	require.Contains(t, ruleset.issuedRules, rule.ruleID, "ruleID already exists in ruleset")
+	require.Contains(t, rulesetManager.issuedRuleID2rulesetID, rule.ruleID, "ruleID already exists in ruleset manager")
+
+	ruleset2 := &nftRuleset{
+		rulesetID: "ruleset-2",
+	}
+	_, err = rulesetManager.addRule(ruleset2, ip)
+	require.Error(t, err, "addRule() should have failed")
+}
+
+func TestRulesetManager_deleteRule(t *testing.T) {
+	// Create a ruleset manager.
+	rulesetManager := newRuleManager()
+
+	// Create a ruleset.
+	rulesetID := "ruleset-1"
+	nftRule := nftables.Rule{}
+	ruleset := rulesetManager.createRuleset(rulesetID, &nftRule, nil)
+
+	// Add a rule to the ruleset.
+	ip := []byte("192.168.1.1")
+	rule, err := rulesetManager.addRule(ruleset, ip)
+	require.NoError(t, err, "addRule() failed")
+	require.NotNil(t, rule, "rule should not be nil")
+
+	ip2 := []byte("192.168.1.1")
+	rule2, err := rulesetManager.addRule(ruleset, ip2)
+	require.NoError(t, err, "addRule() failed")
+	require.NotNil(t, rule2, "rule should not be nil")
+
+	hasNext := rulesetManager.deleteRule(rule)
+	require.True(t, hasNext, "deleteRule() should have returned true")
+
+	// Check that the rule is no longer in the manager.
+	require.NotContains(t, rulesetManager.issuedRuleID2rulesetID, rule.ruleID, "rule should have been deleted")
+
+	hasNext = rulesetManager.deleteRule(rule2)
+	require.False(t, hasNext, "deleteRule() should have returned false")
+}
+
+func TestRulesetManager_setNftRuleHandle(t *testing.T) {
+	// Create a ruleset manager.
+	rulesetManager := newRuleManager()
+	// Create a ruleset.
+	rulesetID := "ruleset-1"
+	nftRule := nftables.Rule{}
+	ruleset := rulesetManager.createRuleset(rulesetID, &nftRule, nil)
+	// Add a rule to the ruleset.
+	ip := []byte("192.168.0.1")
+
+	rule, err := rulesetManager.addRule(ruleset, ip)
+	require.NoError(t, err, "addRule() failed")
+	require.NotNil(t, rule, "rule should not be nil")
+
+	nftRuleCopy := nftRule
+	nftRuleCopy.Handle = 2
+	nftRuleCopy.UserData = []byte(rulesetID)
+	err = rulesetManager.setNftRuleHandle(&nftRuleCopy)
+	require.NoError(t, err, "setNftRuleHandle() failed")
+	// check correct work with references
+	require.Equal(t, nftRule.Handle, uint64(2), "nftRule.Handle is incorrect")
+}
+
+func TestRulesetManager_getRuleset(t *testing.T) {
+	// Create a ruleset manager.
+	rulesetManager := newRuleManager()
+	// Create a ruleset.
+	rulesetID := "ruleset-1"
+	nftRule := nftables.Rule{}
+	nftSet := nftables.Set{
+		ID: 2,
+	}
+	ruleset := rulesetManager.createRuleset(rulesetID, &nftRule, &nftSet)
+	require.NotNil(t, ruleset, "createRuleset() failed")
+
+	find, ok := rulesetManager.getRuleset(rulesetID)
+	require.True(t, ok, "getRuleset() failed")
+	require.Equal(t, ruleset, find, "getRulesetBySetID() failed")
+
+	_, ok = rulesetManager.getRuleset("does-not-exist")
+	require.False(t, ok, "getRuleset() failed")
+}

client/firewall/port.go

@@ -0,0 +1,46 @@
+package firewall
+
+import (
+	"strconv"
+)
+
+// Protocol is the protocol of the port
+type Protocol string
+
+const (
+	// ProtocolTCP is the TCP protocol
+	ProtocolTCP Protocol = "tcp"
+
+	// ProtocolUDP is the UDP protocol
+	ProtocolUDP Protocol = "udp"
+
+	// ProtocolICMP is the ICMP protocol
+	ProtocolICMP Protocol = "icmp"
+
+	// ProtocolALL cover all supported protocols
+	ProtocolALL Protocol = "all"
+
+	// ProtocolUnknown unknown protocol
+	ProtocolUnknown Protocol = "unknown"
+)
+
+// Port of the address for firewall rule
+type Port struct {
+	// IsRange is true Values contains two values, the first is the start port, the second is the end port
+	IsRange bool
+
+	// Values contains one value for single port, multiple values for the list of ports, or two values for the range of ports
+	Values []int
+}
+
+// String interface implementation
+func (p *Port) String() string {
+	var ports string
+	for _, port := range p.Values {
+		if ports != "" {
+			ports += ","
+		}
+		ports += strconv.Itoa(port)
+	}
+	return ports
+}

client/firewall/uspfilter/rule.go

@@ -0,0 +1,30 @@
+package uspfilter
+
+import (
+	"net"
+
+	"github.com/google/gopacket"
+
+	fw "github.com/netbirdio/netbird/client/firewall"
+)
+
+// Rule to handle management of rules
+type Rule struct {
+	id         string
+	ip         net.IP
+	ipLayer    gopacket.LayerType
+	matchByIP  bool
+	protoLayer gopacket.LayerType
+	direction  fw.RuleDirection
+	sPort      uint16
+	dPort      uint16
+	drop       bool
+	comment    string
+
+	udpHook func([]byte) bool
+}
+
+// GetRuleID returns the rule id
+func (r *Rule) GetRuleID() string {
+	return r.id
+}

client/firewall/uspfilter/uspfilter.go

@@ -0,0 +1,377 @@
+package uspfilter
+
+import (
+	"fmt"
+	"net"
+	"sync"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/google/uuid"
+	log "github.com/sirupsen/logrus"
+
+	fw "github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/iface"
+)
+
+const layerTypeAll = 0
+
+// IFaceMapper defines subset methods of interface required for manager
+type IFaceMapper interface {
+	SetFilter(iface.PacketFilter) error
+}
+
+// RuleSet is a set of rules grouped by a string key
+type RuleSet map[string]Rule
+
+// Manager userspace firewall manager
+type Manager struct {
+	outgoingRules map[string]RuleSet
+	incomingRules map[string]RuleSet
+	wgNetwork     *net.IPNet
+	decoders      sync.Pool
+
+	mutex sync.RWMutex
+}
+
+// decoder for packages
+type decoder struct {
+	eth     layers.Ethernet
+	ip4     layers.IPv4
+	ip6     layers.IPv6
+	tcp     layers.TCP
+	udp     layers.UDP
+	icmp4   layers.ICMPv4
+	icmp6   layers.ICMPv6
+	decoded []gopacket.LayerType
+	parser  *gopacket.DecodingLayerParser
+}
+
+// Create userspace firewall manager constructor
+func Create(iface IFaceMapper) (*Manager, error) {
+	m := &Manager{
+		decoders: sync.Pool{
+			New: func() any {
+				d := &decoder{
+					decoded: []gopacket.LayerType{},
+				}
+				d.parser = gopacket.NewDecodingLayerParser(
+					layers.LayerTypeIPv4,
+					&d.eth, &d.ip4, &d.ip6, &d.icmp4, &d.icmp6, &d.tcp, &d.udp,
+				)
+				d.parser.IgnoreUnsupported = true
+				return d
+			},
+		},
+		outgoingRules: make(map[string]RuleSet),
+		incomingRules: make(map[string]RuleSet),
+	}
+
+	if err := iface.SetFilter(m); err != nil {
+		return nil, err
+	}
+	return m, nil
+}
+
+// AddFiltering rule to the firewall
+//
+// If comment argument is empty firewall manager should set
+// rule ID as comment for the rule
+func (m *Manager) AddFiltering(
+	ip net.IP,
+	proto fw.Protocol,
+	sPort *fw.Port,
+	dPort *fw.Port,
+	direction fw.RuleDirection,
+	action fw.Action,
+	ipsetName string,
+	comment string,
+) (fw.Rule, error) {
+	r := Rule{
+		id:        uuid.New().String(),
+		ip:        ip,
+		ipLayer:   layers.LayerTypeIPv6,
+		matchByIP: true,
+		direction: direction,
+		drop:      action == fw.ActionDrop,
+		comment:   comment,
+	}
+	if ipNormalized := ip.To4(); ipNormalized != nil {
+		r.ipLayer = layers.LayerTypeIPv4
+		r.ip = ipNormalized
+	}
+
+	if s := r.ip.String(); s == "0.0.0.0" || s == "::" {
+		r.matchByIP = false
+	}
+
+	if sPort != nil && len(sPort.Values) == 1 {
+		r.sPort = uint16(sPort.Values[0])
+	}
+
+	if dPort != nil && len(dPort.Values) == 1 {
+		r.dPort = uint16(dPort.Values[0])
+	}
+
+	switch proto {
+	case fw.ProtocolTCP:
+		r.protoLayer = layers.LayerTypeTCP
+	case fw.ProtocolUDP:
+		r.protoLayer = layers.LayerTypeUDP
+	case fw.ProtocolICMP:
+		r.protoLayer = layers.LayerTypeICMPv4
+		if r.ipLayer == layers.LayerTypeIPv6 {
+			r.protoLayer = layers.LayerTypeICMPv6
+		}
+	case fw.ProtocolALL:
+		r.protoLayer = layerTypeAll
+	}
+
+	m.mutex.Lock()
+	if direction == fw.RuleDirectionIN {
+		if _, ok := m.incomingRules[r.ip.String()]; !ok {
+			m.incomingRules[r.ip.String()] = make(RuleSet)
+		}
+		m.incomingRules[r.ip.String()][r.id] = r
+	} else {
+		if _, ok := m.outgoingRules[r.ip.String()]; !ok {
+			m.outgoingRules[r.ip.String()] = make(RuleSet)
+		}
+		m.outgoingRules[r.ip.String()][r.id] = r
+	}
+	m.mutex.Unlock()
+
+	return &r, nil
+}
+
+// DeleteRule from the firewall by rule definition
+func (m *Manager) DeleteRule(rule fw.Rule) error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	r, ok := rule.(*Rule)
+	if !ok {
+		return fmt.Errorf("delete rule: invalid rule type: %T", rule)
+	}
+
+	if r.direction == fw.RuleDirectionIN {
+		_, ok := m.incomingRules[r.ip.String()][r.id]
+		if !ok {
+			return fmt.Errorf("delete rule: no rule with such id: %v", r.id)
+		}
+		delete(m.incomingRules[r.ip.String()], r.id)
+	} else {
+		_, ok := m.outgoingRules[r.ip.String()][r.id]
+		if !ok {
+			return fmt.Errorf("delete rule: no rule with such id: %v", r.id)
+		}
+		delete(m.outgoingRules[r.ip.String()], r.id)
+	}
+
+	return nil
+}
+
+// Reset firewall to the default state
+func (m *Manager) Reset() error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	m.outgoingRules = make(map[string]RuleSet)
+	m.incomingRules = make(map[string]RuleSet)
+
+	return nil
+}
+
+// Flush doesn't need to be implemented for this manager
+func (m *Manager) Flush() error { return nil }
+
+// DropOutgoing filter outgoing packets
+func (m *Manager) DropOutgoing(packetData []byte) bool {
+	return m.dropFilter(packetData, m.outgoingRules, false)
+}
+
+// DropIncoming filter incoming packets
+func (m *Manager) DropIncoming(packetData []byte) bool {
+	return m.dropFilter(packetData, m.incomingRules, true)
+}
+
+// dropFilter imlements same logic for booth direction of the traffic
+func (m *Manager) dropFilter(packetData []byte, rules map[string]RuleSet, isIncomingPacket bool) bool {
+	m.mutex.RLock()
+	defer m.mutex.RUnlock()
+
+	d := m.decoders.Get().(*decoder)
+	defer m.decoders.Put(d)
+
+	if err := d.parser.DecodeLayers(packetData, &d.decoded); err != nil {
+		log.Tracef("couldn't decode layer, err: %s", err)
+		return true
+	}
+
+	if len(d.decoded) < 2 {
+		log.Tracef("not enough levels in network packet")
+		return true
+	}
+
+	ipLayer := d.decoded[0]
+
+	switch ipLayer {
+	case layers.LayerTypeIPv4:
+		if !m.wgNetwork.Contains(d.ip4.SrcIP) || !m.wgNetwork.Contains(d.ip4.DstIP) {
+			return false
+		}
+	case layers.LayerTypeIPv6:
+		if !m.wgNetwork.Contains(d.ip6.SrcIP) || !m.wgNetwork.Contains(d.ip6.DstIP) {
+			return false
+		}
+	default:
+		log.Errorf("unknown layer: %v", d.decoded[0])
+		return true
+	}
+
+	var ip net.IP
+	switch ipLayer {
+	case layers.LayerTypeIPv4:
+		if isIncomingPacket {
+			ip = d.ip4.SrcIP
+		} else {
+			ip = d.ip4.DstIP
+		}
+	case layers.LayerTypeIPv6:
+		if isIncomingPacket {
+			ip = d.ip6.SrcIP
+		} else {
+			ip = d.ip6.DstIP
+		}
+	}
+
+	filter, ok := validateRule(ip, packetData, rules[ip.String()], d)
+	if ok {
+		return filter
+	}
+	filter, ok = validateRule(ip, packetData, rules["0.0.0.0"], d)
+	if ok {
+		return filter
+	}
+	filter, ok = validateRule(ip, packetData, rules["::"], d)
+	if ok {
+		return filter
+	}
+
+	// default policy is DROP ALL
+	return true
+}
+
+func validateRule(ip net.IP, packetData []byte, rules map[string]Rule, d *decoder) (bool, bool) {
+	payloadLayer := d.decoded[1]
+	for _, rule := range rules {
+		if rule.matchByIP && !ip.Equal(rule.ip) {
+			continue
+		}
+
+		if rule.protoLayer == layerTypeAll {
+			return rule.drop, true
+		}
+
+		if payloadLayer != rule.protoLayer {
+			continue
+		}
+
+		switch payloadLayer {
+		case layers.LayerTypeTCP:
+			if rule.sPort == 0 && rule.dPort == 0 {
+				return rule.drop, true
+			}
+			if rule.sPort != 0 && rule.sPort == uint16(d.tcp.SrcPort) {
+				return rule.drop, true
+			}
+			if rule.dPort != 0 && rule.dPort == uint16(d.tcp.DstPort) {
+				return rule.drop, true
+			}
+		case layers.LayerTypeUDP:
+			// if rule has UDP hook (and if we are here we match this rule)
+			// we ignore rule.drop and call this hook
+			if rule.udpHook != nil {
+				return rule.udpHook(packetData), true
+			}
+
+			if rule.sPort == 0 && rule.dPort == 0 {
+				return rule.drop, true
+			}
+			if rule.sPort != 0 && rule.sPort == uint16(d.udp.SrcPort) {
+				return rule.drop, true
+			}
+			if rule.dPort != 0 && rule.dPort == uint16(d.udp.DstPort) {
+				return rule.drop, true
+			}
+			return rule.drop, true
+		case layers.LayerTypeICMPv4, layers.LayerTypeICMPv6:
+			return rule.drop, true
+		}
+	}
+	return false, false
+}
+
+// SetNetwork of the wireguard interface to which filtering applied
+func (m *Manager) SetNetwork(network *net.IPNet) {
+	m.wgNetwork = network
+}
+
+// AddUDPPacketHook calls hook when UDP packet from given direction matched
+//
+// Hook function returns flag which indicates should be the matched package dropped or not
+func (m *Manager) AddUDPPacketHook(
+	in bool, ip net.IP, dPort uint16, hook func([]byte) bool,
+) string {
+	r := Rule{
+		id:         uuid.New().String(),
+		ip:         ip,
+		protoLayer: layers.LayerTypeUDP,
+		dPort:      dPort,
+		ipLayer:    layers.LayerTypeIPv6,
+		direction:  fw.RuleDirectionOUT,
+		comment:    fmt.Sprintf("UDP Hook direction: %v, ip:%v, dport:%d", in, ip, dPort),
+		udpHook:    hook,
+	}
+
+	if ip.To4() != nil {
+		r.ipLayer = layers.LayerTypeIPv4
+	}
+
+	m.mutex.Lock()
+	if in {
+		r.direction = fw.RuleDirectionIN
+		if _, ok := m.incomingRules[r.ip.String()]; !ok {
+			m.incomingRules[r.ip.String()] = make(map[string]Rule)
+		}
+		m.incomingRules[r.ip.String()][r.id] = r
+	} else {
+		if _, ok := m.outgoingRules[r.ip.String()]; !ok {
+			m.outgoingRules[r.ip.String()] = make(map[string]Rule)
+		}
+		m.outgoingRules[r.ip.String()][r.id] = r
+	}
+
+	m.mutex.Unlock()
+
+	return r.id
+}
+
+// RemovePacketHook removes packet hook by given ID
+func (m *Manager) RemovePacketHook(hookID string) error {
+	for _, arr := range m.incomingRules {
+		for _, r := range arr {
+			if r.id == hookID {
+				return m.DeleteRule(&r)
+			}
+		}
+	}
+	for _, arr := range m.outgoingRules {
+		for _, r := range arr {
+			if r.id == hookID {
+				return m.DeleteRule(&r)
+			}
+		}
+	}
+	return fmt.Errorf("hook with given id not found")
+}

client/firewall/uspfilter/uspfilter_test.go

@@ -0,0 +1,403 @@
+package uspfilter
+
+import (
+	"fmt"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/stretchr/testify/require"
+
+	fw "github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/iface"
+)
+
+type IFaceMock struct {
+	SetFilterFunc func(iface.PacketFilter) error
+}
+
+func (i *IFaceMock) SetFilter(iface iface.PacketFilter) error {
+	if i.SetFilterFunc == nil {
+		return fmt.Errorf("not implemented")
+	}
+	return i.SetFilterFunc(iface)
+}
+
+func TestManagerCreate(t *testing.T) {
+	ifaceMock := &IFaceMock{
+		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+	}
+
+	m, err := Create(ifaceMock)
+	if err != nil {
+		t.Errorf("failed to create Manager: %v", err)
+		return
+	}
+
+	if m == nil {
+		t.Error("Manager is nil")
+	}
+}
+
+func TestManagerAddFiltering(t *testing.T) {
+	isSetFilterCalled := false
+	ifaceMock := &IFaceMock{
+		SetFilterFunc: func(iface.PacketFilter) error {
+			isSetFilterCalled = true
+			return nil
+		},
+	}
+
+	m, err := Create(ifaceMock)
+	if err != nil {
+		t.Errorf("failed to create Manager: %v", err)
+		return
+	}
+
+	ip := net.ParseIP("192.168.1.1")
+	proto := fw.ProtocolTCP
+	port := &fw.Port{Values: []int{80}}
+	direction := fw.RuleDirectionOUT
+	action := fw.ActionDrop
+	comment := "Test rule"
+
+	rule, err := m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	if err != nil {
+		t.Errorf("failed to add filtering: %v", err)
+		return
+	}
+
+	if rule == nil {
+		t.Error("Rule is nil")
+		return
+	}
+
+	if !isSetFilterCalled {
+		t.Error("SetFilter was not called")
+		return
+	}
+}
+
+func TestManagerDeleteRule(t *testing.T) {
+	ifaceMock := &IFaceMock{
+		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+	}
+
+	m, err := Create(ifaceMock)
+	if err != nil {
+		t.Errorf("failed to create Manager: %v", err)
+		return
+	}
+
+	ip := net.ParseIP("192.168.1.1")
+	proto := fw.ProtocolTCP
+	port := &fw.Port{Values: []int{80}}
+	direction := fw.RuleDirectionOUT
+	action := fw.ActionDrop
+	comment := "Test rule"
+
+	rule, err := m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	if err != nil {
+		t.Errorf("failed to add filtering: %v", err)
+		return
+	}
+
+	ip = net.ParseIP("192.168.1.1")
+	proto = fw.ProtocolTCP
+	port = &fw.Port{Values: []int{80}}
+	direction = fw.RuleDirectionIN
+	action = fw.ActionDrop
+	comment = "Test rule 2"
+
+	rule2, err := m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	if err != nil {
+		t.Errorf("failed to add filtering: %v", err)
+		return
+	}
+
+	err = m.DeleteRule(rule)
+	if err != nil {
+		t.Errorf("failed to delete rule: %v", err)
+		return
+	}
+
+	if _, ok := m.incomingRules[ip.String()][rule2.GetRuleID()]; !ok {
+		t.Errorf("rule2 is not in the incomingRules")
+	}
+
+	err = m.DeleteRule(rule2)
+	if err != nil {
+		t.Errorf("failed to delete rule: %v", err)
+		return
+	}
+
+	if _, ok := m.incomingRules[ip.String()][rule2.GetRuleID()]; ok {
+		t.Errorf("rule2 is not in the incomingRules")
+	}
+}
+
+func TestAddUDPPacketHook(t *testing.T) {
+	tests := []struct {
+		name       string
+		in         bool
+		expDir     fw.RuleDirection
+		ip         net.IP
+		dPort      uint16
+		hook       func([]byte) bool
+		expectedID string
+	}{
+		{
+			name:   "Test Outgoing UDP Packet Hook",
+			in:     false,
+			expDir: fw.RuleDirectionOUT,
+			ip:     net.IPv4(10, 168, 0, 1),
+			dPort:  8000,
+			hook:   func([]byte) bool { return true },
+		},
+		{
+			name:   "Test Incoming UDP Packet Hook",
+			in:     true,
+			expDir: fw.RuleDirectionIN,
+			ip:     net.IPv6loopback,
+			dPort:  9000,
+			hook:   func([]byte) bool { return false },
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			manager := &Manager{
+				incomingRules: map[string]RuleSet{},
+				outgoingRules: map[string]RuleSet{},
+			}
+
+			manager.AddUDPPacketHook(tt.in, tt.ip, tt.dPort, tt.hook)
+
+			var addedRule Rule
+			if tt.in {
+				if len(manager.incomingRules[tt.ip.String()]) != 1 {
+					t.Errorf("expected 1 incoming rule, got %d", len(manager.incomingRules))
+					return
+				}
+				for _, rule := range manager.incomingRules[tt.ip.String()] {
+					addedRule = rule
+				}
+			} else {
+				if len(manager.outgoingRules) != 1 {
+					t.Errorf("expected 1 outgoing rule, got %d", len(manager.outgoingRules))
+					return
+				}
+				for _, rule := range manager.outgoingRules[tt.ip.String()] {
+					addedRule = rule
+				}
+			}
+
+			if !tt.ip.Equal(addedRule.ip) {
+				t.Errorf("expected ip %s, got %s", tt.ip, addedRule.ip)
+				return
+			}
+			if tt.dPort != addedRule.dPort {
+				t.Errorf("expected dPort %d, got %d", tt.dPort, addedRule.dPort)
+				return
+			}
+			if layers.LayerTypeUDP != addedRule.protoLayer {
+				t.Errorf("expected protoLayer %s, got %s", layers.LayerTypeUDP, addedRule.protoLayer)
+				return
+			}
+			if tt.expDir != addedRule.direction {
+				t.Errorf("expected direction %d, got %d", tt.expDir, addedRule.direction)
+				return
+			}
+			if addedRule.udpHook == nil {
+				t.Errorf("expected udpHook to be set")
+				return
+			}
+		})
+	}
+}
+
+func TestManagerReset(t *testing.T) {
+	ifaceMock := &IFaceMock{
+		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+	}
+
+	m, err := Create(ifaceMock)
+	if err != nil {
+		t.Errorf("failed to create Manager: %v", err)
+		return
+	}
+
+	ip := net.ParseIP("192.168.1.1")
+	proto := fw.ProtocolTCP
+	port := &fw.Port{Values: []int{80}}
+	direction := fw.RuleDirectionOUT
+	action := fw.ActionDrop
+	comment := "Test rule"
+
+	_, err = m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	if err != nil {
+		t.Errorf("failed to add filtering: %v", err)
+		return
+	}
+
+	err = m.Reset()
+	if err != nil {
+		t.Errorf("failed to reset Manager: %v", err)
+		return
+	}
+
+	if len(m.outgoingRules) != 0 || len(m.incomingRules) != 0 {
+		t.Errorf("rules is not empty")
+	}
+}
+
+func TestNotMatchByIP(t *testing.T) {
+	ifaceMock := &IFaceMock{
+		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+	}
+
+	m, err := Create(ifaceMock)
+	if err != nil {
+		t.Errorf("failed to create Manager: %v", err)
+		return
+	}
+	m.wgNetwork = &net.IPNet{
+		IP:   net.ParseIP("100.10.0.0"),
+		Mask: net.CIDRMask(16, 32),
+	}
+
+	ip := net.ParseIP("0.0.0.0")
+	proto := fw.ProtocolUDP
+	direction := fw.RuleDirectionOUT
+	action := fw.ActionAccept
+	comment := "Test rule"
+
+	_, err = m.AddFiltering(ip, proto, nil, nil, direction, action, "", comment)
+	if err != nil {
+		t.Errorf("failed to add filtering: %v", err)
+		return
+	}
+
+	ipv4 := &layers.IPv4{
+		TTL:      64,
+		Version:  4,
+		SrcIP:    net.ParseIP("100.10.0.1"),
+		DstIP:    net.ParseIP("100.10.0.100"),
+		Protocol: layers.IPProtocolUDP,
+	}
+	udp := &layers.UDP{
+		SrcPort: 51334,
+		DstPort: 53,
+	}
+
+	if err := udp.SetNetworkLayerForChecksum(ipv4); err != nil {
+		t.Errorf("failed to set network layer for checksum: %v", err)
+		return
+	}
+	payload := gopacket.Payload([]byte("test"))
+
+	buf := gopacket.NewSerializeBuffer()
+	opts := gopacket.SerializeOptions{
+		ComputeChecksums: true,
+		FixLengths:       true,
+	}
+	if err = gopacket.SerializeLayers(buf, opts, ipv4, udp, payload); err != nil {
+		t.Errorf("failed to serialize packet: %v", err)
+		return
+	}
+
+	if m.dropFilter(buf.Bytes(), m.outgoingRules, false) {
+		t.Errorf("expected packet to be accepted")
+		return
+	}
+
+	if err = m.Reset(); err != nil {
+		t.Errorf("failed to reset Manager: %v", err)
+		return
+	}
+}
+
+// TestRemovePacketHook tests the functionality of the RemovePacketHook method
+func TestRemovePacketHook(t *testing.T) {
+	// creating mock iface
+	iface := &IFaceMock{
+		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+	}
+
+	// creating manager instance
+	manager, err := Create(iface)
+	if err != nil {
+		t.Fatalf("Failed to create Manager: %s", err)
+	}
+
+	// Add a UDP packet hook
+	hookFunc := func(data []byte) bool { return true }
+	hookID := manager.AddUDPPacketHook(false, net.IPv4(192, 168, 0, 1), 8080, hookFunc)
+
+	// Assert the hook is added by finding it in the manager's outgoing rules
+	found := false
+	for _, arr := range manager.outgoingRules {
+		for _, rule := range arr {
+			if rule.id == hookID {
+				found = true
+				break
+			}
+		}
+	}
+
+	if !found {
+		t.Fatalf("The hook was not added properly.")
+	}
+
+	// Now remove the packet hook
+	err = manager.RemovePacketHook(hookID)
+	if err != nil {
+		t.Fatalf("Failed to remove hook: %s", err)
+	}
+
+	// Assert the hook is removed by checking it in the manager's outgoing rules
+	for _, arr := range manager.outgoingRules {
+		for _, rule := range arr {
+			if rule.id == hookID {
+				t.Fatalf("The hook was not removed properly.")
+			}
+		}
+	}
+}
+
+func TestUSPFilterCreatePerformance(t *testing.T) {
+	for _, testMax := range []int{10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000} {
+		t.Run(fmt.Sprintf("Testing %d rules", testMax), func(t *testing.T) {
+			// just check on the local interface
+			ifaceMock := &IFaceMock{
+				SetFilterFunc: func(iface.PacketFilter) error { return nil },
+			}
+			manager, err := Create(ifaceMock)
+			require.NoError(t, err)
+			time.Sleep(time.Second)
+
+			defer func() {
+				if err := manager.Reset(); err != nil {
+					t.Errorf("clear the manager state: %v", err)
+				}
+				time.Sleep(time.Second)
+			}()
+
+			ip := net.ParseIP("10.20.0.100")
+			start := time.Now()
+			for i := 0; i < testMax; i++ {
+				port := &fw.Port{Values: []int{1000 + i}}
+				if i%2 == 0 {
+					_, err = manager.AddFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
+				} else {
+					_, err = manager.AddFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
+				}
+
+				require.NoError(t, err, "failed to add rule")
+			}
+			t.Logf("execution avg per rule: %s", time.Since(start)/time.Duration(testMax))
+		})
+	}
+}

client/installer.nsis

@@ -0,0 +1,216 @@
+!define APP_NAME "Netbird"
+!define COMP_NAME "Netbird"
+!define WEB_SITE "Netbird.io"
+!define VERSION $%APPVER%
+!define COPYRIGHT "Netbird Authors, 2022"
+!define DESCRIPTION "A WireGuard®-based mesh network that connects your devices into a single private network"
+!define INSTALLER_NAME "netbird-installer.exe"
+!define MAIN_APP_EXE "Netbird"
+!define ICON "ui\\netbird.ico"
+!define BANNER "ui\\banner.bmp"
+!define LICENSE_DATA "..\\LICENSE"
+
+!define INSTALL_DIR "$PROGRAMFILES64\${APP_NAME}"
+!define INSTALL_TYPE "SetShellVarContext all"
+!define REG_ROOT "HKLM"
+!define REG_APP_PATH "Software\Microsoft\Windows\CurrentVersion\App Paths\${MAIN_APP_EXE}"
+!define UNINSTALL_PATH "Software\Microsoft\Windows\CurrentVersion\Uninstall\${APP_NAME}"
+
+!define UI_APP_NAME "Netbird UI"
+!define UI_APP_EXE "Netbird-ui"
+
+!define UI_REG_APP_PATH "Software\Microsoft\Windows\CurrentVersion\App Paths\${UI_APP_EXE}"
+!define UI_UNINSTALL_PATH "Software\Microsoft\Windows\CurrentVersion\Uninstall\${UI_APP_NAME}"
+
+Unicode True
+
+######################################################################
+
+VIProductVersion  "${VERSION}"
+VIAddVersionKey "ProductName"  "${APP_NAME}"
+VIAddVersionKey "CompanyName"  "${COMP_NAME}"
+VIAddVersionKey "LegalCopyright"  "${COPYRIGHT}"
+VIAddVersionKey "FileDescription"  "${DESCRIPTION}"
+VIAddVersionKey "FileVersion"  "${VERSION}"
+
+######################################################################
+
+SetCompressor /SOLID Lzma
+Name "${APP_NAME}"
+Caption "${APP_NAME}"
+OutFile "..\\${INSTALLER_NAME}"
+BrandingText "${APP_NAME}"
+InstallDirRegKey "${REG_ROOT}" "${REG_APP_PATH}" ""
+InstallDir "${INSTALL_DIR}"
+LicenseData "${LICENSE_DATA}"
+ShowInstDetails Show
+
+######################################################################
+
+!define MUI_ICON "${ICON}"
+!define MUI_UNICON "${ICON}"
+!define MUI_WELCOMEFINISHPAGE_BITMAP "${BANNER}"
+!define MUI_UNWELCOMEFINISHPAGE_BITMAP "${BANNER}"
+!define MUI_FINISHPAGE_RUN
+!define MUI_FINISHPAGE_RUN_TEXT "Start ${UI_APP_NAME}"
+!define MUI_FINISHPAGE_RUN_FUNCTION "LaunchLink"
+######################################################################
+
+!include "MUI2.nsh"
+!include LogicLib.nsh
+
+!define MUI_ABORTWARNING
+!define MUI_UNABORTWARNING
+
+!insertmacro MUI_PAGE_WELCOME
+
+!insertmacro MUI_PAGE_LICENSE "${LICENSE_DATA}"
+
+!insertmacro MUI_PAGE_DIRECTORY
+
+!insertmacro MUI_PAGE_INSTFILES
+
+!insertmacro MUI_PAGE_FINISH
+
+!insertmacro MUI_UNPAGE_CONFIRM
+
+!insertmacro MUI_UNPAGE_INSTFILES
+
+!insertmacro MUI_UNPAGE_FINISH
+
+!insertmacro MUI_LANGUAGE "English"
+
+######################################################################
+
+Function GetAppFromCommand
+Exch $1
+Push $2
+StrCpy $2 $1 1 0
+StrCmp $2 '"' 0 done
+Push $3
+StrCpy $3 ""
+loop:
+    IntOp $3 $3 + 1
+    StrCpy $2 $1 1 $3
+    StrCmp $2 '' +2
+    StrCmp $2 '"' 0 loop
+    StrCpy $1 $1 $3
+    StrCpy $1 $1 "" 1 ; Remove starting quote
+Pop $3
+done:
+Pop $2
+Exch $1
+FunctionEnd
+
+!macro GetAppFromCommand in out
+Push "${in}"
+Call GetAppFromCommand
+Pop ${out}
+!macroend
+
+!macro UninstallPreviousNSIS UninstCommand CustomParameters
+Push $0
+Push $1
+Push $2
+Push '${CustomParameters}'
+Push '${UninstCommand}'
+Call GetAppFromCommand ; Remove quotes and parameters from UninstCommand
+Pop $0
+Pop $1
+GetFullPathName $2 "$0\.."
+ExecWait '"$0" /S $1 _?=$2'
+Delete "$0" ; Extra cleanup because we used _?=
+RMDir "$2"
+Pop $2
+Pop $1
+Pop $0
+!macroend
+
+Function .onInit
+StrCpy $INSTDIR "${INSTALL_DIR}"
+ReadRegStr $R0 HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\$(^NAME)" "UninstallString"
+${If} $R0 != ""
+    # if silent install jump to uninstall step
+    IfSilent uninstall
+
+    MessageBox MB_YESNO|MB_ICONQUESTION "NetBird is already installed. We must remove it before installing upgrading NetBird. Proceed?" IDNO done IDYES uninstall
+
+    uninstall:
+      !insertmacro UninstallPreviousNSIS $R0 "/NoMsgBox"
+    done:
+
+${EndIf}
+FunctionEnd
+######################################################################
+Section -MainProgram
+	${INSTALL_TYPE}
+	# SetOverwrite ifnewer
+	SetOutPath "$INSTDIR"
+	File /r "..\\dist\\netbird_windows_amd64\\"
+SectionEnd
+######################################################################
+
+Section -Icons_Reg
+SetOutPath "$INSTDIR"
+WriteUninstaller "$INSTDIR\netbird_uninstall.exe"
+
+WriteRegStr ${REG_ROOT} "${REG_APP_PATH}" "" "$INSTDIR\${MAIN_APP_EXE}"
+WriteRegStr ${REG_ROOT} "${UNINSTALL_PATH}"  "DisplayName" "${APP_NAME}"
+WriteRegStr ${REG_ROOT} "${UNINSTALL_PATH}"  "UninstallString" "$INSTDIR\netbird_uninstall.exe"
+WriteRegStr ${REG_ROOT} "${UNINSTALL_PATH}"  "DisplayIcon" "$INSTDIR\${MAIN_APP_EXE}"
+WriteRegStr ${REG_ROOT} "${UNINSTALL_PATH}"  "DisplayVersion" "${VERSION}"
+WriteRegStr ${REG_ROOT} "${UNINSTALL_PATH}"  "Publisher" "${COMP_NAME}"
+
+WriteRegStr ${REG_ROOT} "${UI_REG_APP_PATH}" "" "$INSTDIR\${UI_APP_EXE}"
+
+EnVar::SetHKLM
+EnVar::AddValueEx "path" "$INSTDIR"
+
+SetShellVarContext current
+CreateShortCut "$SMPROGRAMS\${APP_NAME}.lnk" "$INSTDIR\${UI_APP_EXE}"
+CreateShortCut "$DESKTOP\${APP_NAME}.lnk" "$INSTDIR\${UI_APP_EXE}"
+SetShellVarContext all
+SectionEnd
+
+Section -Post
+ExecWait '"$INSTDIR\${MAIN_APP_EXE}" service install'
+ExecWait '"$INSTDIR\${MAIN_APP_EXE}" service start'
+# sleep a bit for visibility
+Sleep 1000
+SectionEnd
+######################################################################
+
+Section Uninstall
+${INSTALL_TYPE}
+
+ExecWait '"$INSTDIR\${MAIN_APP_EXE}" service stop'
+ExecWait '"$INSTDIR\${MAIN_APP_EXE}" service uninstall'
+
+# kill ui client
+ExecWait `taskkill /im ${UI_APP_EXE}.exe`
+
+# wait the service uninstall take unblock the executable
+Sleep 3000
+Delete "$INSTDIR\${UI_APP_EXE}"
+Delete "$INSTDIR\${MAIN_APP_EXE}"
+Delete "$INSTDIR\wintun.dll"
+RmDir /r "$INSTDIR"
+
+SetShellVarContext current
+Delete "$DESKTOP\${APP_NAME}.lnk"
+Delete "$SMPROGRAMS\${APP_NAME}.lnk"
+SetShellVarContext all
+
+DeleteRegKey ${REG_ROOT} "${REG_APP_PATH}"
+DeleteRegKey ${REG_ROOT} "${UNINSTALL_PATH}"
+EnVar::SetHKLM
+EnVar::DeleteValue "path" "$INSTDIR"
+SectionEnd
+
+
+Function LaunchLink
+SetShellVarContext current
+   SetOutPath $INSTDIR
+   ShellExecAsUser::ShellExecAsUser "" "$DESKTOP\${APP_NAME}.lnk"
+SetShellVarContext all
+FunctionEnd

client/internal/acl/manager.go

@@ -0,0 +1,493 @@
+package acl
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"fmt"
+	"net"
+	"strconv"
+	"sync"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/client/ssh"
+	"github.com/netbirdio/netbird/iface"
+	mgmProto "github.com/netbirdio/netbird/management/proto"
+)
+
+// IFaceMapper defines subset methods of interface required for manager
+type IFaceMapper interface {
+	Name() string
+	Address() iface.WGAddress
+	IsUserspaceBind() bool
+	SetFilter(iface.PacketFilter) error
+}
+
+// Manager is a ACL rules manager
+type Manager interface {
+	ApplyFiltering(networkMap *mgmProto.NetworkMap)
+	Stop()
+}
+
+// DefaultManager uses firewall manager to handle
+type DefaultManager struct {
+	manager      firewall.Manager
+	ipsetCounter int
+	rulesPairs   map[string][]firewall.Rule
+	mutex        sync.Mutex
+}
+
+type ipsetInfo struct {
+	name    string
+	ipCount int
+}
+
+func newDefaultManager(fm firewall.Manager) *DefaultManager {
+	return &DefaultManager{
+		manager:    fm,
+		rulesPairs: make(map[string][]firewall.Rule),
+	}
+}
+
+// ApplyFiltering firewall rules to the local firewall manager processed by ACL policy.
+//
+// If allowByDefault is ture it appends allow ALL traffic rules to input and output chains.
+func (d *DefaultManager) ApplyFiltering(networkMap *mgmProto.NetworkMap) {
+	d.mutex.Lock()
+	defer d.mutex.Unlock()
+
+	start := time.Now()
+	defer func() {
+		total := 0
+		for _, pairs := range d.rulesPairs {
+			total += len(pairs)
+		}
+		log.Infof(
+			"ACL rules processed in: %v, total rules count: %d",
+			time.Since(start), total)
+	}()
+
+	if d.manager == nil {
+		log.Debug("firewall manager is not supported, skipping firewall rules")
+		return
+	}
+
+	defer func() {
+		if err := d.manager.Flush(); err != nil {
+			log.Error("failed to flush firewall rules: ", err)
+		}
+	}()
+
+	rules, squashedProtocols := d.squashAcceptRules(networkMap)
+
+	enableSSH := (networkMap.PeerConfig != nil &&
+		networkMap.PeerConfig.SshConfig != nil &&
+		networkMap.PeerConfig.SshConfig.SshEnabled)
+	if _, ok := squashedProtocols[mgmProto.FirewallRule_ALL]; ok {
+		enableSSH = enableSSH && !ok
+	}
+	if _, ok := squashedProtocols[mgmProto.FirewallRule_TCP]; ok {
+		enableSSH = enableSSH && !ok
+	}
+
+	// if TCP protocol rules not squashed and SSH enabled
+	// we add default firewall rule which accepts connection to any peer
+	// in the network by SSH (TCP 22 port).
+	if enableSSH {
+		rules = append(rules, &mgmProto.FirewallRule{
+			PeerIP:    "0.0.0.0",
+			Direction: mgmProto.FirewallRule_IN,
+			Action:    mgmProto.FirewallRule_ACCEPT,
+			Protocol:  mgmProto.FirewallRule_TCP,
+			Port:      strconv.Itoa(ssh.DefaultSSHPort),
+		})
+	}
+
+	// if we got empty rules list but management not set networkMap.FirewallRulesIsEmpty flag
+	// we have old version of management without rules handling, we should allow all traffic
+	if len(networkMap.FirewallRules) == 0 && !networkMap.FirewallRulesIsEmpty {
+		log.Warn("this peer is connected to a NetBird Management service with an older version. Allowing all traffic from connected peers")
+		rules = append(rules,
+			&mgmProto.FirewallRule{
+				PeerIP:    "0.0.0.0",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			&mgmProto.FirewallRule{
+				PeerIP:    "0.0.0.0",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+		)
+	}
+
+	applyFailed := false
+	newRulePairs := make(map[string][]firewall.Rule)
+	ipsetByRuleSelectors := make(map[string]*ipsetInfo)
+
+	// calculate which IP's can be grouped in by which ipset
+	// to do that we use rule selector (which is just rule properties without IP's)
+	for _, r := range rules {
+		selector := d.getRuleGroupingSelector(r)
+		ipset, ok := ipsetByRuleSelectors[selector]
+		if !ok {
+			ipset = &ipsetInfo{}
+		}
+
+		ipset.ipCount++
+		ipsetByRuleSelectors[selector] = ipset
+	}
+
+	for _, r := range rules {
+		// if this rule is member of rule selection with more than DefaultIPsCountForSet
+		// it's IP address can be used in the ipset for firewall manager which supports it
+		ipset := ipsetByRuleSelectors[d.getRuleGroupingSelector(r)]
+		ipsetName := ""
+		if ipset.name == "" {
+			d.ipsetCounter++
+			ipset.name = fmt.Sprintf("nb%07d", d.ipsetCounter)
+		}
+		ipsetName = ipset.name
+		pairID, rulePair, err := d.protoRuleToFirewallRule(r, ipsetName)
+		if err != nil {
+			log.Errorf("failed to apply firewall rule: %+v, %v", r, err)
+			applyFailed = true
+			break
+		}
+		newRulePairs[pairID] = rulePair
+	}
+	if applyFailed {
+		log.Error("failed to apply firewall rules, rollback ACL to previous state")
+		for _, rules := range newRulePairs {
+			for _, rule := range rules {
+				if err := d.manager.DeleteRule(rule); err != nil {
+					log.Errorf("failed to delete new firewall rule (id: %v) during rollback: %v", rule.GetRuleID(), err)
+					continue
+				}
+			}
+		}
+		return
+	}
+
+	for pairID, rules := range d.rulesPairs {
+		if _, ok := newRulePairs[pairID]; !ok {
+			for _, rule := range rules {
+				if err := d.manager.DeleteRule(rule); err != nil {
+					log.Errorf("failed to delete firewall rule: %v", err)
+					continue
+				}
+			}
+			delete(d.rulesPairs, pairID)
+		}
+	}
+	d.rulesPairs = newRulePairs
+}
+
+// Stop ACL controller and clear firewall state
+func (d *DefaultManager) Stop() {
+	d.mutex.Lock()
+	defer d.mutex.Unlock()
+
+	if err := d.manager.Reset(); err != nil {
+		log.WithError(err).Error("reset firewall state")
+	}
+}
+
+func (d *DefaultManager) protoRuleToFirewallRule(
+	r *mgmProto.FirewallRule,
+	ipsetName string,
+) (string, []firewall.Rule, error) {
+	ip := net.ParseIP(r.PeerIP)
+	if ip == nil {
+		return "", nil, fmt.Errorf("invalid IP address, skipping firewall rule")
+	}
+
+	protocol := convertToFirewallProtocol(r.Protocol)
+	if protocol == firewall.ProtocolUnknown {
+		return "", nil, fmt.Errorf("invalid protocol type: %d, skipping firewall rule", r.Protocol)
+	}
+
+	action := convertFirewallAction(r.Action)
+	if action == firewall.ActionUnknown {
+		return "", nil, fmt.Errorf("invalid action type: %d, skipping firewall rule", r.Action)
+	}
+
+	var port *firewall.Port
+	if r.Port != "" {
+		value, err := strconv.Atoi(r.Port)
+		if err != nil {
+			return "", nil, fmt.Errorf("invalid port, skipping firewall rule")
+		}
+		port = &firewall.Port{
+			Values: []int{value},
+		}
+	}
+
+	ruleID := d.getRuleID(ip, protocol, int(r.Direction), port, action, "")
+	if rulesPair, ok := d.rulesPairs[ruleID]; ok {
+		return ruleID, rulesPair, nil
+	}
+
+	var rules []firewall.Rule
+	var err error
+	switch r.Direction {
+	case mgmProto.FirewallRule_IN:
+		rules, err = d.addInRules(ip, protocol, port, action, ipsetName, "")
+	case mgmProto.FirewallRule_OUT:
+		rules, err = d.addOutRules(ip, protocol, port, action, ipsetName, "")
+	default:
+		return "", nil, fmt.Errorf("invalid direction, skipping firewall rule")
+	}
+
+	if err != nil {
+		return "", nil, err
+	}
+
+	d.rulesPairs[ruleID] = rules
+	return ruleID, rules, nil
+}
+
+func (d *DefaultManager) addInRules(
+	ip net.IP,
+	protocol firewall.Protocol,
+	port *firewall.Port,
+	action firewall.Action,
+	ipsetName string,
+	comment string,
+) ([]firewall.Rule, error) {
+	var rules []firewall.Rule
+	rule, err := d.manager.AddFiltering(
+		ip, protocol, nil, port, firewall.RuleDirectionIN, action, ipsetName, comment)
+	if err != nil {
+		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
+	}
+	rules = append(rules, rule)
+
+	if shouldSkipInvertedRule(protocol, port) {
+		return rules, nil
+	}
+
+	rule, err = d.manager.AddFiltering(
+		ip, protocol, port, nil, firewall.RuleDirectionOUT, action, ipsetName, comment)
+	if err != nil {
+		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
+	}
+
+	return append(rules, rule), nil
+}
+
+func (d *DefaultManager) addOutRules(
+	ip net.IP,
+	protocol firewall.Protocol,
+	port *firewall.Port,
+	action firewall.Action,
+	ipsetName string,
+	comment string,
+) ([]firewall.Rule, error) {
+	var rules []firewall.Rule
+	rule, err := d.manager.AddFiltering(
+		ip, protocol, nil, port, firewall.RuleDirectionOUT, action, ipsetName, comment)
+	if err != nil {
+		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
+	}
+	rules = append(rules, rule)
+
+	if shouldSkipInvertedRule(protocol, port) {
+		return rules, nil
+	}
+
+	rule, err = d.manager.AddFiltering(
+		ip, protocol, port, nil, firewall.RuleDirectionIN, action, ipsetName, comment)
+	if err != nil {
+		return nil, fmt.Errorf("failed to add firewall rule: %v", err)
+	}
+
+	return append(rules, rule), nil
+}
+
+// getRuleID() returns unique ID for the rule based on its parameters.
+func (d *DefaultManager) getRuleID(
+	ip net.IP,
+	proto firewall.Protocol,
+	direction int,
+	port *firewall.Port,
+	action firewall.Action,
+	comment string,
+) string {
+	idStr := ip.String() + string(proto) + strconv.Itoa(direction) + strconv.Itoa(int(action)) + comment
+	if port != nil {
+		idStr += port.String()
+	}
+
+	return hex.EncodeToString(md5.New().Sum([]byte(idStr)))
+}
+
+// squashAcceptRules does complex logic to convert many rules which allows connection by traffic type
+// to all peers in the network map to one rule which just accepts that type of the traffic.
+//
+// NOTE: It will not squash two rules for same protocol if one covers all peers in the network,
+// but other has port definitions or has drop policy.
+func (d *DefaultManager) squashAcceptRules(
+	networkMap *mgmProto.NetworkMap,
+) ([]*mgmProto.FirewallRule, map[mgmProto.FirewallRuleProtocol]struct{}) {
+	totalIPs := 0
+	for _, p := range append(networkMap.RemotePeers, networkMap.OfflinePeers...) {
+		for range p.AllowedIps {
+			totalIPs++
+		}
+	}
+
+	type protoMatch map[mgmProto.FirewallRuleProtocol]map[string]int
+
+	in := protoMatch{}
+	out := protoMatch{}
+
+	// trace which type of protocols was squashed
+	squashedRules := []*mgmProto.FirewallRule{}
+	squashedProtocols := map[mgmProto.FirewallRuleProtocol]struct{}{}
+
+	// this function we use to do calculation, can we squash the rules by protocol or not.
+	// We summ amount of Peers IP for given protocol we found in original rules list.
+	// But we zeroed the IP's for protocol if:
+	// 1. Any of the rule has DROP action type.
+	// 2. Any of rule contains Port.
+	//
+	// We zeroed this to notify squash function that this protocol can't be squashed.
+	addRuleToCalculationMap := func(i int, r *mgmProto.FirewallRule, protocols protoMatch) {
+		drop := r.Action == mgmProto.FirewallRule_DROP || r.Port != ""
+		if drop {
+			protocols[r.Protocol] = map[string]int{}
+			return
+		}
+		if _, ok := protocols[r.Protocol]; !ok {
+			protocols[r.Protocol] = map[string]int{}
+		}
+
+		// special case, when we recieve this all network IP address
+		// it means that rules for that protocol was already optimized on the
+		// management side
+		if r.PeerIP == "0.0.0.0" {
+			squashedRules = append(squashedRules, r)
+			squashedProtocols[r.Protocol] = struct{}{}
+			return
+		}
+
+		ipset := protocols[r.Protocol]
+
+		if _, ok := ipset[r.PeerIP]; ok {
+			return
+		}
+		ipset[r.PeerIP] = i
+	}
+
+	for i, r := range networkMap.FirewallRules {
+		// calculate squash for different directions
+		if r.Direction == mgmProto.FirewallRule_IN {
+			addRuleToCalculationMap(i, r, in)
+		} else {
+			addRuleToCalculationMap(i, r, out)
+		}
+	}
+
+	// order of squashing by protocol is important
+	// only for ther first element ALL, it must be done first
+	protocolOrders := []mgmProto.FirewallRuleProtocol{
+		mgmProto.FirewallRule_ALL,
+		mgmProto.FirewallRule_ICMP,
+		mgmProto.FirewallRule_TCP,
+		mgmProto.FirewallRule_UDP,
+	}
+
+	squash := func(matches protoMatch, direction mgmProto.FirewallRuleDirection) {
+		for _, protocol := range protocolOrders {
+			if ipset, ok := matches[protocol]; !ok || len(ipset) != totalIPs || len(ipset) < 2 {
+				// don't squash if :
+				// 1. Rules not cover all peers in the network
+				// 2. Rules cover only one peer in the network.
+				continue
+			}
+
+			// add special rule 0.0.0.0 which allows all IP's in our firewall implementations
+			squashedRules = append(squashedRules, &mgmProto.FirewallRule{
+				PeerIP:    "0.0.0.0",
+				Direction: direction,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  protocol,
+			})
+			squashedProtocols[protocol] = struct{}{}
+
+			if protocol == mgmProto.FirewallRule_ALL {
+				// if we have ALL traffic type squashed rule
+				// it allows all other type of traffic, so we can stop processing
+				break
+			}
+		}
+	}
+
+	squash(in, mgmProto.FirewallRule_IN)
+	squash(out, mgmProto.FirewallRule_OUT)
+
+	// if all protocol was squashed everything is allow and we can ignore all other rules
+	if _, ok := squashedProtocols[mgmProto.FirewallRule_ALL]; ok {
+		return squashedRules, squashedProtocols
+	}
+
+	if len(squashedRules) == 0 {
+		return networkMap.FirewallRules, squashedProtocols
+	}
+
+	var rules []*mgmProto.FirewallRule
+	// filter out rules which was squashed from final list
+	// if we also have other not squashed rules.
+	for i, r := range networkMap.FirewallRules {
+		if _, ok := squashedProtocols[r.Protocol]; ok {
+			if m, ok := in[r.Protocol]; ok && m[r.PeerIP] == i {
+				continue
+			} else if m, ok := out[r.Protocol]; ok && m[r.PeerIP] == i {
+				continue
+			}
+		}
+		rules = append(rules, r)
+	}
+
+	return append(rules, squashedRules...), squashedProtocols
+}
+
+// getRuleGroupingSelector takes all rule properties except IP address to build selector
+func (d *DefaultManager) getRuleGroupingSelector(rule *mgmProto.FirewallRule) string {
+	return fmt.Sprintf("%v:%v:%v:%s", strconv.Itoa(int(rule.Direction)), rule.Action, rule.Protocol, rule.Port)
+}
+
+func convertToFirewallProtocol(protocol mgmProto.FirewallRuleProtocol) firewall.Protocol {
+	switch protocol {
+	case mgmProto.FirewallRule_TCP:
+		return firewall.ProtocolTCP
+	case mgmProto.FirewallRule_UDP:
+		return firewall.ProtocolUDP
+	case mgmProto.FirewallRule_ICMP:
+		return firewall.ProtocolICMP
+	case mgmProto.FirewallRule_ALL:
+		return firewall.ProtocolALL
+	default:
+		return firewall.ProtocolUnknown
+	}
+}
+
+func shouldSkipInvertedRule(protocol firewall.Protocol, port *firewall.Port) bool {
+	return protocol == firewall.ProtocolALL || protocol == firewall.ProtocolICMP || port == nil
+}
+
+func convertFirewallAction(action mgmProto.FirewallRuleAction) firewall.Action {
+	switch action {
+	case mgmProto.FirewallRule_ACCEPT:
+		return firewall.ActionAccept
+	case mgmProto.FirewallRule_DROP:
+		return firewall.ActionDrop
+	default:
+		return firewall.ActionUnknown
+	}
+}

client/internal/acl/manager_create.go

@@ -0,0 +1,23 @@
+//go:build !linux
+
+package acl
+
+import (
+	"fmt"
+	"runtime"
+
+	"github.com/netbirdio/netbird/client/firewall/uspfilter"
+)
+
+// Create creates a firewall manager instance
+func Create(iface IFaceMapper) (manager *DefaultManager, err error) {
+	if iface.IsUserspaceBind() {
+		// use userspace packet filtering firewall
+		fm, err := uspfilter.Create(iface)
+		if err != nil {
+			return nil, err
+		}
+		return newDefaultManager(fm), nil
+	}
+	return nil, fmt.Errorf("not implemented for this OS: %s", runtime.GOOS)
+}

client/internal/acl/manager_create_linux.go

@@ -0,0 +1,33 @@
+package acl
+
+import (
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/firewall"
+	"github.com/netbirdio/netbird/client/firewall/iptables"
+	"github.com/netbirdio/netbird/client/firewall/nftables"
+	"github.com/netbirdio/netbird/client/firewall/uspfilter"
+)
+
+// Create creates a firewall manager instance for the Linux
+func Create(iface IFaceMapper) (manager *DefaultManager, err error) {
+	var fm firewall.Manager
+	if iface.IsUserspaceBind() {
+		// use userspace packet filtering firewall
+		if fm, err = uspfilter.Create(iface); err != nil {
+			log.Debugf("failed to create userspace filtering firewall: %s", err)
+			return nil, err
+		}
+	} else {
+		if fm, err = nftables.Create(iface); err != nil {
+			log.Debugf("failed to create nftables manager: %s", err)
+			// fallback to iptables
+			if fm, err = iptables.Create(iface); err != nil {
+				log.Errorf("failed to create iptables manager: %s", err)
+				return nil, err
+			}
+		}
+	}
+
+	return newDefaultManager(fm), nil
+}

client/internal/acl/manager_test.go

@@ -0,0 +1,333 @@
+package acl
+
+import (
+	"testing"
+
+	"github.com/golang/mock/gomock"
+
+	"github.com/netbirdio/netbird/client/internal/acl/mocks"
+	mgmProto "github.com/netbirdio/netbird/management/proto"
+)
+
+func TestDefaultManager(t *testing.T) {
+	networkMap := &mgmProto.NetworkMap{
+		FirewallRules: []*mgmProto.FirewallRule{
+			{
+				PeerIP:    "10.93.0.1",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_TCP,
+				Port:      "80",
+			},
+			{
+				PeerIP:    "10.93.0.2",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_DROP,
+				Protocol:  mgmProto.FirewallRule_UDP,
+				Port:      "53",
+			},
+		},
+	}
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	iface := mocks.NewMockIFaceMapper(ctrl)
+	iface.EXPECT().IsUserspaceBind().Return(true)
+	// iface.EXPECT().Name().Return("lo")
+	iface.EXPECT().SetFilter(gomock.Any())
+
+	// we receive one rule from the management so for testing purposes ignore it
+	acl, err := Create(iface)
+	if err != nil {
+		t.Errorf("create ACL manager: %v", err)
+		return
+	}
+	defer acl.Stop()
+
+	t.Run("apply firewall rules", func(t *testing.T) {
+		acl.ApplyFiltering(networkMap)
+
+		if len(acl.rulesPairs) != 2 {
+			t.Errorf("firewall rules not applied: %v", acl.rulesPairs)
+			return
+		}
+	})
+
+	t.Run("add extra rules", func(t *testing.T) {
+		existedPairs := map[string]struct{}{}
+		for id := range acl.rulesPairs {
+			existedPairs[id] = struct{}{}
+		}
+
+		// remove first rule
+		networkMap.FirewallRules = networkMap.FirewallRules[1:]
+		networkMap.FirewallRules = append(
+			networkMap.FirewallRules,
+			&mgmProto.FirewallRule{
+				PeerIP:    "10.93.0.3",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_DROP,
+				Protocol:  mgmProto.FirewallRule_ICMP,
+			},
+		)
+
+		acl.ApplyFiltering(networkMap)
+
+		// we should have one old and one new rule in the existed rules
+		if len(acl.rulesPairs) != 2 {
+			t.Errorf("firewall rules not applied")
+			return
+		}
+
+		// check that old rule was removed
+		previousCount := 0
+		for id := range acl.rulesPairs {
+			if _, ok := existedPairs[id]; ok {
+				previousCount++
+			}
+		}
+		if previousCount != 1 {
+			t.Errorf("old rule was not removed")
+		}
+	})
+
+	t.Run("handle default rules", func(t *testing.T) {
+		networkMap.FirewallRules = networkMap.FirewallRules[:0]
+
+		networkMap.FirewallRulesIsEmpty = true
+		if acl.ApplyFiltering(networkMap); len(acl.rulesPairs) != 0 {
+			t.Errorf("rules should be empty if FirewallRulesIsEmpty is set, got: %v", len(acl.rulesPairs))
+			return
+		}
+
+		networkMap.FirewallRulesIsEmpty = false
+		acl.ApplyFiltering(networkMap)
+		if len(acl.rulesPairs) != 2 {
+			t.Errorf("rules should contain 2 rules if FirewallRulesIsEmpty is not set, got: %v", len(acl.rulesPairs))
+			return
+		}
+	})
+}
+
+func TestDefaultManagerSquashRules(t *testing.T) {
+	networkMap := &mgmProto.NetworkMap{
+		RemotePeers: []*mgmProto.RemotePeerConfig{
+			{AllowedIps: []string{"10.93.0.1"}},
+			{AllowedIps: []string{"10.93.0.2"}},
+			{AllowedIps: []string{"10.93.0.3"}},
+			{AllowedIps: []string{"10.93.0.4"}},
+		},
+		FirewallRules: []*mgmProto.FirewallRule{
+			{
+				PeerIP:    "10.93.0.1",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.2",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.3",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.4",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.1",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.2",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.3",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.4",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+		},
+	}
+
+	manager := &DefaultManager{}
+	rules, _ := manager.squashAcceptRules(networkMap)
+	if len(rules) != 2 {
+		t.Errorf("rules should contain 2, got: %v", rules)
+		return
+	}
+
+	r := rules[0]
+	if r.PeerIP != "0.0.0.0" {
+		t.Errorf("IP should be 0.0.0.0, got: %v", r.PeerIP)
+		return
+	} else if r.Direction != mgmProto.FirewallRule_IN {
+		t.Errorf("direction should be IN, got: %v", r.Direction)
+		return
+	} else if r.Protocol != mgmProto.FirewallRule_ALL {
+		t.Errorf("protocol should be ALL, got: %v", r.Protocol)
+		return
+	} else if r.Action != mgmProto.FirewallRule_ACCEPT {
+		t.Errorf("action should be ACCEPT, got: %v", r.Action)
+		return
+	}
+
+	r = rules[1]
+	if r.PeerIP != "0.0.0.0" {
+		t.Errorf("IP should be 0.0.0.0, got: %v", r.PeerIP)
+		return
+	} else if r.Direction != mgmProto.FirewallRule_OUT {
+		t.Errorf("direction should be OUT, got: %v", r.Direction)
+		return
+	} else if r.Protocol != mgmProto.FirewallRule_ALL {
+		t.Errorf("protocol should be ALL, got: %v", r.Protocol)
+		return
+	} else if r.Action != mgmProto.FirewallRule_ACCEPT {
+		t.Errorf("action should be ACCEPT, got: %v", r.Action)
+		return
+	}
+}
+
+func TestDefaultManagerSquashRulesNoAffect(t *testing.T) {
+	networkMap := &mgmProto.NetworkMap{
+		RemotePeers: []*mgmProto.RemotePeerConfig{
+			{AllowedIps: []string{"10.93.0.1"}},
+			{AllowedIps: []string{"10.93.0.2"}},
+			{AllowedIps: []string{"10.93.0.3"}},
+			{AllowedIps: []string{"10.93.0.4"}},
+		},
+		FirewallRules: []*mgmProto.FirewallRule{
+			{
+				PeerIP:    "10.93.0.1",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.2",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.3",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.4",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_TCP,
+			},
+			{
+				PeerIP:    "10.93.0.1",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.2",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.3",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_ALL,
+			},
+			{
+				PeerIP:    "10.93.0.4",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_UDP,
+			},
+		},
+	}
+
+	manager := &DefaultManager{}
+	if rules, _ := manager.squashAcceptRules(networkMap); len(rules) != len(networkMap.FirewallRules) {
+		t.Errorf("we should got same amount of rules as intput, got %v", len(rules))
+	}
+}
+
+func TestDefaultManagerEnableSSHRules(t *testing.T) {
+	networkMap := &mgmProto.NetworkMap{
+		PeerConfig: &mgmProto.PeerConfig{
+			SshConfig: &mgmProto.SSHConfig{
+				SshEnabled: true,
+			},
+		},
+		RemotePeers: []*mgmProto.RemotePeerConfig{
+			{AllowedIps: []string{"10.93.0.1"}},
+			{AllowedIps: []string{"10.93.0.2"}},
+			{AllowedIps: []string{"10.93.0.3"}},
+		},
+		FirewallRules: []*mgmProto.FirewallRule{
+			{
+				PeerIP:    "10.93.0.1",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_TCP,
+			},
+			{
+				PeerIP:    "10.93.0.2",
+				Direction: mgmProto.FirewallRule_IN,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_TCP,
+			},
+			{
+				PeerIP:    "10.93.0.3",
+				Direction: mgmProto.FirewallRule_OUT,
+				Action:    mgmProto.FirewallRule_ACCEPT,
+				Protocol:  mgmProto.FirewallRule_UDP,
+			},
+		},
+	}
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	iface := mocks.NewMockIFaceMapper(ctrl)
+	iface.EXPECT().IsUserspaceBind().Return(true)
+	// iface.EXPECT().Name().Return("lo")
+	iface.EXPECT().SetFilter(gomock.Any())
+
+	// we receive one rule from the management so for testing purposes ignore it
+	acl, err := Create(iface)
+	if err != nil {
+		t.Errorf("create ACL manager: %v", err)
+		return
+	}
+	defer acl.Stop()
+
+	acl.ApplyFiltering(networkMap)
+
+	if len(acl.rulesPairs) != 4 {
+		t.Errorf("expect 4 rules (last must be SSH), got: %d", len(acl.rulesPairs))
+		return
+	}
+}

client/internal/acl/mocks/README.md

@@ -0,0 +1,7 @@
+## Mocks
+
+To generate (or refresh) mocks from acl package please install [mockgen](https://github.com/golang/mock).
+Run this command from the `./client/internal/acl` folder to update iface mapper interface mock:
+```bash
+mockgen -destination mocks/iface_mapper.go -package mocks . IFaceMapper
+```

client/internal/acl/mocks/iface_mapper.go

@@ -0,0 +1,91 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/netbirdio/netbird/client/internal/acl (interfaces: IFaceMapper)
+
+// Package mocks is a generated GoMock package.
+package mocks
+
+import (
+	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
+	iface "github.com/netbirdio/netbird/iface"
+)
+
+// MockIFaceMapper is a mock of IFaceMapper interface.
+type MockIFaceMapper struct {
+	ctrl     *gomock.Controller
+	recorder *MockIFaceMapperMockRecorder
+}
+
+// MockIFaceMapperMockRecorder is the mock recorder for MockIFaceMapper.
+type MockIFaceMapperMockRecorder struct {
+	mock *MockIFaceMapper
+}
+
+// NewMockIFaceMapper creates a new mock instance.
+func NewMockIFaceMapper(ctrl *gomock.Controller) *MockIFaceMapper {
+	mock := &MockIFaceMapper{ctrl: ctrl}
+	mock.recorder = &MockIFaceMapperMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockIFaceMapper) EXPECT() *MockIFaceMapperMockRecorder {
+	return m.recorder
+}
+
+// Address mocks base method.
+func (m *MockIFaceMapper) Address() iface.WGAddress {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Address")
+	ret0, _ := ret[0].(iface.WGAddress)
+	return ret0
+}
+
+// Address indicates an expected call of Address.
+func (mr *MockIFaceMapperMockRecorder) Address() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Address", reflect.TypeOf((*MockIFaceMapper)(nil).Address))
+}
+
+// IsUserspaceBind mocks base method.
+func (m *MockIFaceMapper) IsUserspaceBind() bool {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "IsUserspaceBind")
+	ret0, _ := ret[0].(bool)
+	return ret0
+}
+
+// IsUserspaceBind indicates an expected call of IsUserspaceBind.
+func (mr *MockIFaceMapperMockRecorder) IsUserspaceBind() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "IsUserspaceBind", reflect.TypeOf((*MockIFaceMapper)(nil).IsUserspaceBind))
+}
+
+// Name mocks base method.
+func (m *MockIFaceMapper) Name() string {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Name")
+	ret0, _ := ret[0].(string)
+	return ret0
+}
+
+// Name indicates an expected call of Name.
+func (mr *MockIFaceMapperMockRecorder) Name() *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Name", reflect.TypeOf((*MockIFaceMapper)(nil).Name))
+}
+
+// SetFilter mocks base method.
+func (m *MockIFaceMapper) SetFilter(arg0 iface.PacketFilter) error {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "SetFilter", arg0)
+	ret0, _ := ret[0].(error)
+	return ret0
+}
+
+// SetFilter indicates an expected call of SetFilter.
+func (mr *MockIFaceMapperMockRecorder) SetFilter(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SetFilter", reflect.TypeOf((*MockIFaceMapper)(nil).SetFilter), arg0)
+}

client/internal/auth/device_flow.go

@@ -0,0 +1,202 @@
+package auth
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/netbirdio/netbird/client/internal"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+)
+
+// HostedGrantType grant type for device flow on Hosted
+const (
+	HostedGrantType = "urn:ietf:params:oauth:grant-type:device_code"
+)
+
+var _ OAuthFlow = &DeviceAuthorizationFlow{}
+
+// DeviceAuthorizationFlow implements the OAuthFlow interface,
+// for the Device Authorization Flow.
+type DeviceAuthorizationFlow struct {
+	providerConfig internal.DeviceAuthProviderConfig
+
+	HTTPClient HTTPClient
+}
+
+// RequestDeviceCodePayload used for request device code payload for auth0
+type RequestDeviceCodePayload struct {
+	Audience string `json:"audience"`
+	ClientID string `json:"client_id"`
+	Scope    string `json:"scope"`
+}
+
+// TokenRequestPayload used for requesting the auth0 token
+type TokenRequestPayload struct {
+	GrantType    string `json:"grant_type"`
+	DeviceCode   string `json:"device_code,omitempty"`
+	ClientID     string `json:"client_id"`
+	RefreshToken string `json:"refresh_token,omitempty"`
+}
+
+// TokenRequestResponse used for parsing Hosted token's response
+type TokenRequestResponse struct {
+	Error            string `json:"error"`
+	ErrorDescription string `json:"error_description"`
+	TokenInfo
+}
+
+// NewDeviceAuthorizationFlow returns device authorization flow client
+func NewDeviceAuthorizationFlow(config internal.DeviceAuthProviderConfig) (*DeviceAuthorizationFlow, error) {
+	httpTransport := http.DefaultTransport.(*http.Transport).Clone()
+	httpTransport.MaxIdleConns = 5
+
+	httpClient := &http.Client{
+		Timeout:   10 * time.Second,
+		Transport: httpTransport,
+	}
+
+	return &DeviceAuthorizationFlow{
+		providerConfig: config,
+		HTTPClient:     httpClient,
+	}, nil
+}
+
+// GetClientID returns the provider client id
+func (d *DeviceAuthorizationFlow) GetClientID(ctx context.Context) string {
+	return d.providerConfig.ClientID
+}
+
+// RequestAuthInfo requests a device code login flow information from Hosted
+func (d *DeviceAuthorizationFlow) RequestAuthInfo(ctx context.Context) (AuthFlowInfo, error) {
+	form := url.Values{}
+	form.Add("client_id", d.providerConfig.ClientID)
+	form.Add("audience", d.providerConfig.Audience)
+	form.Add("scope", d.providerConfig.Scope)
+	req, err := http.NewRequest("POST", d.providerConfig.DeviceAuthEndpoint,
+		strings.NewReader(form.Encode()))
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("creating request failed with error: %v", err)
+	}
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+
+	res, err := d.HTTPClient.Do(req)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("doing request failed with error: %v", err)
+	}
+
+	defer res.Body.Close()
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("reading body failed with error: %v", err)
+	}
+
+	if res.StatusCode != 200 {
+		return AuthFlowInfo{}, fmt.Errorf("request device code returned status %d error: %s", res.StatusCode, string(body))
+	}
+
+	deviceCode := AuthFlowInfo{}
+	err = json.Unmarshal(body, &deviceCode)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("unmarshaling response failed with error: %v", err)
+	}
+
+	// Fallback to the verification_uri if the IdP doesn't support verification_uri_complete
+	if deviceCode.VerificationURIComplete == "" {
+		deviceCode.VerificationURIComplete = deviceCode.VerificationURI
+	}
+
+	return deviceCode, err
+}
+
+func (d *DeviceAuthorizationFlow) requestToken(info AuthFlowInfo) (TokenRequestResponse, error) {
+	form := url.Values{}
+	form.Add("client_id", d.providerConfig.ClientID)
+	form.Add("grant_type", HostedGrantType)
+	form.Add("device_code", info.DeviceCode)
+
+	req, err := http.NewRequest("POST", d.providerConfig.TokenEndpoint, strings.NewReader(form.Encode()))
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("failed to create request access token: %v", err)
+	}
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+
+	res, err := d.HTTPClient.Do(req)
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("failed to request access token with error: %v", err)
+	}
+
+	defer func() {
+		err := res.Body.Close()
+		if err != nil {
+			return
+		}
+	}()
+
+	body, err := io.ReadAll(res.Body)
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("failed reading access token response body with error: %v", err)
+	}
+
+	if res.StatusCode > 499 {
+		return TokenRequestResponse{}, fmt.Errorf("access token response returned code: %s", string(body))
+	}
+
+	tokenResponse := TokenRequestResponse{}
+	err = json.Unmarshal(body, &tokenResponse)
+	if err != nil {
+		return TokenRequestResponse{}, fmt.Errorf("parsing token response failed with error: %v", err)
+	}
+
+	return tokenResponse, nil
+}
+
+// WaitToken waits user's login and authorize the app. Once the user's authorize
+// it retrieves the access token from Hosted's endpoint and validates it before returning
+func (d *DeviceAuthorizationFlow) WaitToken(ctx context.Context, info AuthFlowInfo) (TokenInfo, error) {
+	interval := time.Duration(info.Interval) * time.Second
+	ticker := time.NewTicker(interval)
+	for {
+		select {
+		case <-ctx.Done():
+			return TokenInfo{}, ctx.Err()
+		case <-ticker.C:
+
+			tokenResponse, err := d.requestToken(info)
+			if err != nil {
+				return TokenInfo{}, fmt.Errorf("parsing token response failed with error: %v", err)
+			}
+
+			if tokenResponse.Error != "" {
+				if tokenResponse.Error == "authorization_pending" {
+					continue
+				} else if tokenResponse.Error == "slow_down" {
+					interval = interval + (3 * time.Second)
+					ticker.Reset(interval)
+					continue
+				}
+
+				return TokenInfo{}, fmt.Errorf(tokenResponse.ErrorDescription)
+			}
+
+			tokenInfo := TokenInfo{
+				AccessToken:  tokenResponse.AccessToken,
+				TokenType:    tokenResponse.TokenType,
+				RefreshToken: tokenResponse.RefreshToken,
+				IDToken:      tokenResponse.IDToken,
+				ExpiresIn:    tokenResponse.ExpiresIn,
+				UseIDToken:   d.providerConfig.UseIDToken,
+			}
+
+			err = isValidAccessToken(tokenInfo.GetTokenToUse(), d.providerConfig.Audience)
+			if err != nil {
+				return TokenInfo{}, fmt.Errorf("validate access token failed with error: %v", err)
+			}
+
+			return tokenInfo, err
+		}
+	}
+}

client/internal/auth/device_flow_test.go

@@ -0,0 +1,306 @@
+package auth
+
+import (
+	"context"
+	"fmt"
+	"github.com/golang-jwt/jwt"
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/stretchr/testify/require"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"testing"
+	"time"
+)
+
+type mockHTTPClient struct {
+	code         int
+	resBody      string
+	reqBody      string
+	MaxReqs      int
+	count        int
+	countResBody string
+	err          error
+}
+
+func (c *mockHTTPClient) Do(req *http.Request) (*http.Response, error) {
+	body, err := io.ReadAll(req.Body)
+	if err == nil {
+		c.reqBody = string(body)
+	}
+
+	if c.MaxReqs > c.count {
+		c.count++
+		return &http.Response{
+			StatusCode: c.code,
+			Body:       io.NopCloser(strings.NewReader(c.countResBody)),
+		}, c.err
+	}
+
+	return &http.Response{
+		StatusCode: c.code,
+		Body:       io.NopCloser(strings.NewReader(c.resBody)),
+	}, c.err
+}
+
+func TestHosted_RequestDeviceCode(t *testing.T) {
+	type test struct {
+		name             string
+		inputResBody     string
+		inputReqCode     int
+		inputReqError    error
+		testingErrFunc   require.ErrorAssertionFunc
+		expectedErrorMSG string
+		testingFunc      require.ComparisonAssertionFunc
+		expectedOut      AuthFlowInfo
+		expectedMSG      string
+		expectPayload    string
+	}
+
+	expectedAudience := "ok"
+	expectedClientID := "bla"
+	expectedScope := "openid"
+	form := url.Values{}
+	form.Add("audience", expectedAudience)
+	form.Add("client_id", expectedClientID)
+	form.Add("scope", expectedScope)
+	expectPayload := form.Encode()
+
+	testCase1 := test{
+		name:           "Payload Is Valid",
+		expectPayload:  expectPayload,
+		inputReqCode:   200,
+		testingErrFunc: require.Error,
+		testingFunc:    require.EqualValues,
+	}
+
+	testCase2 := test{
+		name:             "Exit On Network Error",
+		inputReqError:    fmt.Errorf("error"),
+		testingErrFunc:   require.Error,
+		expectedErrorMSG: "should return error",
+		testingFunc:      require.EqualValues,
+		expectPayload:    expectPayload,
+	}
+
+	testCase3 := test{
+		name:             "Exit On Exit Code",
+		inputReqCode:     400,
+		testingErrFunc:   require.Error,
+		expectedErrorMSG: "should return error",
+		testingFunc:      require.EqualValues,
+		expectPayload:    expectPayload,
+	}
+	testCase4Out := AuthFlowInfo{ExpiresIn: 10}
+	testCase4 := test{
+		name:           "Got Device Code",
+		inputResBody:   fmt.Sprintf("{\"expires_in\":%d}", testCase4Out.ExpiresIn),
+		expectPayload:  expectPayload,
+		inputReqCode:   200,
+		testingErrFunc: require.NoError,
+		testingFunc:    require.EqualValues,
+		expectedOut:    testCase4Out,
+		expectedMSG:    "out should match",
+	}
+
+	for _, testCase := range []test{testCase1, testCase2, testCase3, testCase4} {
+		t.Run(testCase.name, func(t *testing.T) {
+
+			httpClient := mockHTTPClient{
+				resBody: testCase.inputResBody,
+				code:    testCase.inputReqCode,
+				err:     testCase.inputReqError,
+			}
+
+			deviceFlow := &DeviceAuthorizationFlow{
+				providerConfig: internal.DeviceAuthProviderConfig{
+					Audience:           expectedAudience,
+					ClientID:           expectedClientID,
+					Scope:              expectedScope,
+					TokenEndpoint:      "test.hosted.com/token",
+					DeviceAuthEndpoint: "test.hosted.com/device/auth",
+					UseIDToken:         false,
+				},
+				HTTPClient: &httpClient,
+			}
+
+			authInfo, err := deviceFlow.RequestAuthInfo(context.TODO())
+			testCase.testingErrFunc(t, err, testCase.expectedErrorMSG)
+
+			require.EqualValues(t, expectPayload, httpClient.reqBody, "payload should match")
+
+			testCase.testingFunc(t, testCase.expectedOut, authInfo, testCase.expectedMSG)
+
+		})
+	}
+}
+
+func TestHosted_WaitToken(t *testing.T) {
+	type test struct {
+		name              string
+		inputResBody      string
+		inputReqCode      int
+		inputReqError     error
+		inputMaxReqs      int
+		inputCountResBody string
+		inputTimeout      time.Duration
+		inputInfo         AuthFlowInfo
+		inputAudience     string
+		testingErrFunc    require.ErrorAssertionFunc
+		expectedErrorMSG  string
+		testingFunc       require.ComparisonAssertionFunc
+		expectedOut       TokenInfo
+		expectedMSG       string
+		expectPayload     string
+	}
+
+	defaultInfo := AuthFlowInfo{
+		DeviceCode: "test",
+		ExpiresIn:  10,
+		Interval:   1,
+	}
+
+	clientID := "test"
+
+	form := url.Values{}
+	form.Add("grant_type", HostedGrantType)
+	form.Add("device_code", defaultInfo.DeviceCode)
+	form.Add("client_id", clientID)
+	tokenReqPayload := form.Encode()
+
+	testCase1 := test{
+		name:           "Payload Is Valid",
+		inputInfo:      defaultInfo,
+		inputTimeout:   time.Duration(defaultInfo.ExpiresIn) * time.Second,
+		inputReqCode:   200,
+		testingErrFunc: require.Error,
+		testingFunc:    require.EqualValues,
+		expectPayload:  tokenReqPayload,
+	}
+
+	testCase2 := test{
+		name:             "Exit On Network Error",
+		inputInfo:        defaultInfo,
+		inputTimeout:     time.Duration(defaultInfo.ExpiresIn) * time.Second,
+		expectPayload:    tokenReqPayload,
+		inputReqError:    fmt.Errorf("error"),
+		testingErrFunc:   require.Error,
+		expectedErrorMSG: "should return error",
+		testingFunc:      require.EqualValues,
+	}
+
+	testCase3 := test{
+		name:             "Exit On 4XX When Not Pending",
+		inputInfo:        defaultInfo,
+		inputTimeout:     time.Duration(defaultInfo.ExpiresIn) * time.Second,
+		inputReqCode:     400,
+		expectPayload:    tokenReqPayload,
+		testingErrFunc:   require.Error,
+		expectedErrorMSG: "should return error",
+		testingFunc:      require.EqualValues,
+	}
+
+	testCase4 := test{
+		name:             "Exit On Exit Code 5XX",
+		inputInfo:        defaultInfo,
+		inputTimeout:     time.Duration(defaultInfo.ExpiresIn) * time.Second,
+		inputReqCode:     500,
+		expectPayload:    tokenReqPayload,
+		testingErrFunc:   require.Error,
+		expectedErrorMSG: "should return error",
+		testingFunc:      require.EqualValues,
+	}
+
+	testCase5 := test{
+		name:             "Exit On Content Timeout",
+		inputInfo:        defaultInfo,
+		inputTimeout:     0 * time.Second,
+		testingErrFunc:   require.Error,
+		expectedErrorMSG: "should return error",
+		testingFunc:      require.EqualValues,
+	}
+
+	audience := "test"
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{"aud": audience})
+	var hmacSampleSecret []byte
+	tokenString, _ := token.SignedString(hmacSampleSecret)
+
+	testCase6 := test{
+		name:           "Exit On Invalid Audience",
+		inputInfo:      defaultInfo,
+		inputResBody:   fmt.Sprintf("{\"access_token\":\"%s\"}", tokenString),
+		inputTimeout:   time.Duration(defaultInfo.ExpiresIn) * time.Second,
+		inputReqCode:   200,
+		inputAudience:  "super test",
+		testingErrFunc: require.Error,
+		testingFunc:    require.EqualValues,
+		expectPayload:  tokenReqPayload,
+	}
+
+	testCase7 := test{
+		name:           "Received Token Info",
+		inputInfo:      defaultInfo,
+		inputResBody:   fmt.Sprintf("{\"access_token\":\"%s\"}", tokenString),
+		inputTimeout:   time.Duration(defaultInfo.ExpiresIn) * time.Second,
+		inputReqCode:   200,
+		inputAudience:  audience,
+		testingErrFunc: require.NoError,
+		testingFunc:    require.EqualValues,
+		expectPayload:  tokenReqPayload,
+		expectedOut:    TokenInfo{AccessToken: tokenString},
+	}
+
+	testCase8 := test{
+		name:              "Received Token Info after Multiple tries",
+		inputInfo:         defaultInfo,
+		inputResBody:      fmt.Sprintf("{\"access_token\":\"%s\"}", tokenString),
+		inputTimeout:      time.Duration(defaultInfo.ExpiresIn) * time.Second,
+		inputMaxReqs:      2,
+		inputCountResBody: "{\"error\":\"authorization_pending\"}",
+		inputReqCode:      200,
+		inputAudience:     audience,
+		testingErrFunc:    require.NoError,
+		testingFunc:       require.EqualValues,
+		expectPayload:     tokenReqPayload,
+		expectedOut:       TokenInfo{AccessToken: tokenString},
+	}
+
+	for _, testCase := range []test{testCase1, testCase2, testCase3, testCase4, testCase5, testCase6, testCase7, testCase8} {
+		t.Run(testCase.name, func(t *testing.T) {
+
+			httpClient := mockHTTPClient{
+				resBody:      testCase.inputResBody,
+				code:         testCase.inputReqCode,
+				err:          testCase.inputReqError,
+				MaxReqs:      testCase.inputMaxReqs,
+				countResBody: testCase.inputCountResBody,
+			}
+
+			deviceFlow := DeviceAuthorizationFlow{
+				providerConfig: internal.DeviceAuthProviderConfig{
+					Audience:           testCase.inputAudience,
+					ClientID:           clientID,
+					TokenEndpoint:      "test.hosted.com/token",
+					DeviceAuthEndpoint: "test.hosted.com/device/auth",
+					Scope:              "openid",
+					UseIDToken:         false,
+				},
+				HTTPClient: &httpClient,
+			}
+
+			ctx, cancel := context.WithTimeout(context.TODO(), testCase.inputTimeout)
+			defer cancel()
+			tokenInfo, err := deviceFlow.WaitToken(ctx, testCase.inputInfo)
+			testCase.testingErrFunc(t, err, testCase.expectedErrorMSG)
+
+			require.EqualValues(t, testCase.expectPayload, httpClient.reqBody, "payload should match")
+
+			testCase.testingFunc(t, testCase.expectedOut, tokenInfo, testCase.expectedMSG)
+
+			require.GreaterOrEqualf(t, testCase.inputMaxReqs, httpClient.count, "should run %d times", testCase.inputMaxReqs)
+
+		})
+	}
+}

client/internal/auth/oauth.go

@@ -0,0 +1,90 @@
+package auth
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+
+	log "github.com/sirupsen/logrus"
+	"google.golang.org/grpc/codes"
+	gstatus "google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/internal"
+)
+
+// OAuthFlow represents an interface for authorization using different OAuth 2.0 flows
+type OAuthFlow interface {
+	RequestAuthInfo(ctx context.Context) (AuthFlowInfo, error)
+	WaitToken(ctx context.Context, info AuthFlowInfo) (TokenInfo, error)
+	GetClientID(ctx context.Context) string
+}
+
+// HTTPClient http client interface for API calls
+type HTTPClient interface {
+	Do(req *http.Request) (*http.Response, error)
+}
+
+// AuthFlowInfo holds information for the OAuth 2.0  authorization flow
+type AuthFlowInfo struct {
+	DeviceCode              string `json:"device_code"`
+	UserCode                string `json:"user_code"`
+	VerificationURI         string `json:"verification_uri"`
+	VerificationURIComplete string `json:"verification_uri_complete"`
+	ExpiresIn               int    `json:"expires_in"`
+	Interval                int    `json:"interval"`
+}
+
+// Claims used when validating the access token
+type Claims struct {
+	Audience interface{} `json:"aud"`
+}
+
+// TokenInfo holds information of issued access token
+type TokenInfo struct {
+	AccessToken  string `json:"access_token"`
+	RefreshToken string `json:"refresh_token"`
+	IDToken      string `json:"id_token"`
+	TokenType    string `json:"token_type"`
+	ExpiresIn    int    `json:"expires_in"`
+	UseIDToken   bool   `json:"-"`
+}
+
+// GetTokenToUse returns either the access or id token based on UseIDToken field
+func (t TokenInfo) GetTokenToUse() string {
+	if t.UseIDToken {
+		return t.IDToken
+	}
+	return t.AccessToken
+}
+
+// NewOAuthFlow initializes and returns the appropriate OAuth flow based on the management configuration.
+func NewOAuthFlow(ctx context.Context, config *internal.Config) (OAuthFlow, error) {
+	log.Debug("getting device authorization flow info")
+
+	// Try to initialize the Device Authorization Flow
+	deviceFlowInfo, err := internal.GetDeviceAuthorizationFlowInfo(ctx, config.PrivateKey, config.ManagementURL)
+	if err == nil {
+		return NewDeviceAuthorizationFlow(deviceFlowInfo.ProviderConfig)
+	}
+
+	log.Debugf("getting device authorization flow info failed with error: %v", err)
+	log.Debugf("falling back to pkce authorization flow info")
+
+	// If Device Authorization Flow failed, try the PKCE Authorization Flow
+	pkceFlowInfo, err := internal.GetPKCEAuthorizationFlowInfo(ctx, config.PrivateKey, config.ManagementURL)
+	if err != nil {
+		s, ok := gstatus.FromError(err)
+		if ok && s.Code() == codes.NotFound {
+			return nil, fmt.Errorf("no SSO provider returned from management. " +
+				"If you are using hosting Netbird see documentation at " +
+				"https://github.com/netbirdio/netbird/tree/main/management for details")
+		} else if ok && s.Code() == codes.Unimplemented {
+			return nil, fmt.Errorf("the management server, %s, does not support SSO providers, "+
+				"please update your server or use Setup Keys to login", config.ManagementURL)
+		} else {
+			return nil, fmt.Errorf("getting pkce authorization flow info failed with error: %v", err)
+		}
+	}
+
+	return NewPKCEAuthorizationFlow(pkceFlowInfo.ProviderConfig)
+}

client/internal/auth/pkce_flow.go

@@ -0,0 +1,245 @@
+package auth
+
+import (
+	"context"
+	"crypto/sha256"
+	"crypto/subtle"
+	"encoding/base64"
+	"fmt"
+	"html/template"
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/oauth2"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/internal/templates"
+)
+
+var _ OAuthFlow = &PKCEAuthorizationFlow{}
+
+const (
+	queryState                = "state"
+	queryCode                 = "code"
+	queryError                = "error"
+	queryErrorDesc            = "error_description"
+	defaultPKCETimeoutSeconds = 300
+)
+
+// PKCEAuthorizationFlow implements the OAuthFlow interface for
+// the Authorization Code Flow with PKCE.
+type PKCEAuthorizationFlow struct {
+	providerConfig internal.PKCEAuthProviderConfig
+	state          string
+	codeVerifier   string
+	oAuthConfig    *oauth2.Config
+}
+
+// NewPKCEAuthorizationFlow returns new PKCE authorization code flow.
+func NewPKCEAuthorizationFlow(config internal.PKCEAuthProviderConfig) (*PKCEAuthorizationFlow, error) {
+	var availableRedirectURL string
+
+	// find the first available redirect URL
+	for _, redirectURL := range config.RedirectURLs {
+		if !isRedirectURLPortUsed(redirectURL) {
+			availableRedirectURL = redirectURL
+			break
+		}
+	}
+
+	if availableRedirectURL == "" {
+		return nil, fmt.Errorf("no available port found from configured redirect URLs: %q", config.RedirectURLs)
+	}
+
+	cfg := &oauth2.Config{
+		ClientID:     config.ClientID,
+		ClientSecret: config.ClientSecret,
+		Endpoint: oauth2.Endpoint{
+			AuthURL:  config.AuthorizationEndpoint,
+			TokenURL: config.TokenEndpoint,
+		},
+		RedirectURL: availableRedirectURL,
+		Scopes:      strings.Split(config.Scope, " "),
+	}
+
+	return &PKCEAuthorizationFlow{
+		providerConfig: config,
+		oAuthConfig:    cfg,
+	}, nil
+}
+
+// GetClientID returns the provider client id
+func (p *PKCEAuthorizationFlow) GetClientID(_ context.Context) string {
+	return p.providerConfig.ClientID
+}
+
+// RequestAuthInfo requests a authorization code login flow information.
+func (p *PKCEAuthorizationFlow) RequestAuthInfo(_ context.Context) (AuthFlowInfo, error) {
+	state, err := randomBytesInHex(24)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("could not generate random state: %v", err)
+	}
+	p.state = state
+
+	codeVerifier, err := randomBytesInHex(64)
+	if err != nil {
+		return AuthFlowInfo{}, fmt.Errorf("could not create a code verifier: %v", err)
+	}
+	p.codeVerifier = codeVerifier
+
+	codeChallenge := createCodeChallenge(codeVerifier)
+	authURL := p.oAuthConfig.AuthCodeURL(
+		state,
+		oauth2.SetAuthURLParam("code_challenge_method", "S256"),
+		oauth2.SetAuthURLParam("code_challenge", codeChallenge),
+		oauth2.SetAuthURLParam("audience", p.providerConfig.Audience),
+	)
+
+	return AuthFlowInfo{
+		VerificationURIComplete: authURL,
+		ExpiresIn:               defaultPKCETimeoutSeconds,
+	}, nil
+}
+
+// WaitToken waits for the OAuth token in the PKCE Authorization Flow.
+// It starts an HTTP server to receive the OAuth token callback and waits for the token or an error.
+// Once the token is received, it is converted to TokenInfo and validated before returning.
+func (p *PKCEAuthorizationFlow) WaitToken(ctx context.Context, _ AuthFlowInfo) (TokenInfo, error) {
+	tokenChan := make(chan *oauth2.Token, 1)
+	errChan := make(chan error, 1)
+
+	go p.startServer(tokenChan, errChan)
+
+	select {
+	case <-ctx.Done():
+		return TokenInfo{}, ctx.Err()
+	case token := <-tokenChan:
+		return p.handleOAuthToken(token)
+	case err := <-errChan:
+		return TokenInfo{}, err
+	}
+}
+
+func (p *PKCEAuthorizationFlow) startServer(tokenChan chan<- *oauth2.Token, errChan chan<- error) {
+	parsedURL, err := url.Parse(p.oAuthConfig.RedirectURL)
+	if err != nil {
+		errChan <- fmt.Errorf("failed to parse redirect URL: %v", err)
+		return
+	}
+	port := parsedURL.Port()
+
+	server := http.Server{Addr: fmt.Sprintf(":%s", port)}
+	defer func() {
+		if err := server.Shutdown(context.Background()); err != nil {
+			log.Errorf("error while shutting down pkce flow server: %v", err)
+		}
+	}()
+
+	http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
+		tokenValidatorFunc := func() (*oauth2.Token, error) {
+			query := req.URL.Query()
+
+			if authError := query.Get(queryError); authError != "" {
+				authErrorDesc := query.Get(queryErrorDesc)
+				return nil, fmt.Errorf("%s.%s", authError, authErrorDesc)
+			}
+
+			// Prevent timing attacks on state
+			if state := query.Get(queryState); subtle.ConstantTimeCompare([]byte(p.state), []byte(state)) == 0 {
+				return nil, fmt.Errorf("invalid state")
+			}
+
+			code := query.Get(queryCode)
+			if code == "" {
+				return nil, fmt.Errorf("missing code")
+			}
+
+			return p.oAuthConfig.Exchange(
+				req.Context(),
+				code,
+				oauth2.SetAuthURLParam("code_verifier", p.codeVerifier),
+			)
+		}
+
+		token, err := tokenValidatorFunc()
+		if err != nil {
+			renderPKCEFlowTmpl(w, err)
+			errChan <- fmt.Errorf("PKCE authorization flow failed: %v", err)
+			return
+		}
+
+		renderPKCEFlowTmpl(w, nil)
+		tokenChan <- token
+	})
+
+	if err := server.ListenAndServe(); err != nil {
+		errChan <- err
+	}
+}
+
+func (p *PKCEAuthorizationFlow) handleOAuthToken(token *oauth2.Token) (TokenInfo, error) {
+	tokenInfo := TokenInfo{
+		AccessToken:  token.AccessToken,
+		RefreshToken: token.RefreshToken,
+		TokenType:    token.TokenType,
+		ExpiresIn:    token.Expiry.Second(),
+		UseIDToken:   p.providerConfig.UseIDToken,
+	}
+	if idToken, ok := token.Extra("id_token").(string); ok {
+		tokenInfo.IDToken = idToken
+	}
+
+	if err := isValidAccessToken(tokenInfo.GetTokenToUse(), p.providerConfig.Audience); err != nil {
+		return TokenInfo{}, fmt.Errorf("validate access token failed with error: %v", err)
+	}
+
+	return tokenInfo, nil
+}
+
+func createCodeChallenge(codeVerifier string) string {
+	sha2 := sha256.Sum256([]byte(codeVerifier))
+	return base64.RawURLEncoding.EncodeToString(sha2[:])
+}
+
+// isRedirectURLPortUsed checks if the port used in the redirect URL is in use.
+func isRedirectURLPortUsed(redirectURL string) bool {
+	parsedURL, err := url.Parse(redirectURL)
+	if err != nil {
+		log.Errorf("failed to parse redirect URL: %v", err)
+		return true
+	}
+
+	addr := fmt.Sprintf(":%s", parsedURL.Port())
+	conn, err := net.DialTimeout("tcp", addr, 3*time.Second)
+	if err != nil {
+		return false
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Errorf("error while closing the connection: %v", err)
+		}
+	}()
+
+	return true
+}
+
+func renderPKCEFlowTmpl(w http.ResponseWriter, authError error) {
+	tmpl, err := template.New("pkce-auth-flow").Parse(templates.PKCEAuthMsgTmpl)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	data := make(map[string]string)
+	if authError != nil {
+		data["Error"] = authError.Error()
+	}
+
+	if err := tmpl.Execute(w, data); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	}
+}

client/internal/auth/util.go

@@ -0,0 +1,62 @@
+package auth
+
+import (
+	"crypto/rand"
+	"encoding/base64"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"io"
+	"reflect"
+	"strings"
+)
+
+func randomBytesInHex(count int) (string, error) {
+	buf := make([]byte, count)
+	_, err := io.ReadFull(rand.Reader, buf)
+	if err != nil {
+		return "", fmt.Errorf("could not generate %d random bytes: %v", count, err)
+	}
+
+	return hex.EncodeToString(buf), nil
+}
+
+// isValidAccessToken is a simple validation of the access token
+func isValidAccessToken(token string, audience string) error {
+	if token == "" {
+		return fmt.Errorf("token received is empty")
+	}
+
+	encodedClaims := strings.Split(token, ".")[1]
+	claimsString, err := base64.RawURLEncoding.DecodeString(encodedClaims)
+	if err != nil {
+		return err
+	}
+
+	claims := Claims{}
+	err = json.Unmarshal(claimsString, &claims)
+	if err != nil {
+		return err
+	}
+
+	if claims.Audience == nil {
+		return fmt.Errorf("required token field audience is absent")
+	}
+
+	// Audience claim of JWT can be a string or an array of strings
+	typ := reflect.TypeOf(claims.Audience)
+	switch typ.Kind() {
+	case reflect.String:
+		if claims.Audience == audience {
+			return nil
+		}
+	case reflect.Slice:
+		for _, aud := range claims.Audience.([]interface{}) {
+			if audience == aud {
+				return nil
+			}
+		}
+	}
+
+	return fmt.Errorf("invalid JWT token audience field")
+}

client/internal/config.go

@@ -0,0 +1,307 @@
+package internal
+
+import (
+	"fmt"
+	"net/url"
+	"os"
+
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/ssh"
+	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/util"
+)
+
+const (
+	// ManagementLegacyPort is the port that was used before by the Management gRPC server.
+	// It is used for backward compatibility now.
+	// NB: hardcoded from github.com/netbirdio/netbird/management/cmd to avoid import
+	ManagementLegacyPort = 33073
+	// DefaultManagementURL points to the NetBird's cloud management endpoint
+	DefaultManagementURL = "https://api.wiretrustee.com:443"
+	// DefaultAdminURL points to NetBird's cloud management console
+	DefaultAdminURL = "https://app.netbird.io:443"
+)
+
+var defaultInterfaceBlacklist = []string{iface.WgInterfaceDefault, "wt", "utun", "tun0", "zt", "ZeroTier", "wg", "ts",
+	"Tailscale", "tailscale", "docker", "veth", "br-", "lo"}
+
+// ConfigInput carries configuration changes to the client
+type ConfigInput struct {
+	ManagementURL    string
+	AdminURL         string
+	ConfigPath       string
+	PreSharedKey     *string
+	NATExternalIPs   []string
+	CustomDNSAddress []byte
+}
+
+// Config Configuration type
+type Config struct {
+	// Wireguard private key of local peer
+	PrivateKey           string
+	PreSharedKey         string
+	ManagementURL        *url.URL
+	AdminURL             *url.URL
+	WgIface              string
+	WgPort               int
+	IFaceBlackList       []string
+	DisableIPv6Discovery bool
+	// SSHKey is a private SSH key in a PEM format
+	SSHKey string
+
+	// ExternalIP mappings, if different than the host interface IP
+	//
+	//   External IP must not be behind a CGNAT and port-forwarding for incoming UDP packets from WgPort on ExternalIP
+	//   to WgPort on host interface IP must be present. This can take form of single port-forwarding rule, 1:1 DNAT
+	//   mapping ExternalIP to host interface IP, or a NAT DMZ to host interface IP.
+	//
+	//   A single mapping will take the form of: external[/internal]
+	//    external (required): either the external IP address or "stun" to use STUN to determine the external IP address
+	//    internal (optional): either the internal/interface IP address or an interface name
+	//
+	//   examples:
+	//      "12.34.56.78"          => all interfaces IPs will be mapped to external IP of 12.34.56.78
+	//      "12.34.56.78/eth0"     => IPv4 assigned to interface eth0 will be mapped to external IP of 12.34.56.78
+	//      "12.34.56.78/10.1.2.3" => interface IP 10.1.2.3 will be mapped to external IP of 12.34.56.78
+
+	NATExternalIPs []string
+	// CustomDNSAddress sets the DNS resolver listening address in format ip:port
+	CustomDNSAddress string
+}
+
+// ReadConfig read config file and return with Config. If it is not exists create a new with default values
+func ReadConfig(configPath string) (*Config, error) {
+	if configFileIsExists(configPath) {
+		config := &Config{}
+		if _, err := util.ReadJson(configPath, config); err != nil {
+			return nil, err
+		}
+		return config, nil
+	}
+
+	cfg, err := createNewConfig(ConfigInput{ConfigPath: configPath})
+	if err != nil {
+		return nil, err
+	}
+
+	err = WriteOutConfig(configPath, cfg)
+	return cfg, err
+}
+
+// UpdateConfig update existing configuration according to input configuration and return with the configuration
+func UpdateConfig(input ConfigInput) (*Config, error) {
+	if !configFileIsExists(input.ConfigPath) {
+		return nil, status.Errorf(codes.NotFound, "config file doesn't exist")
+	}
+
+	return update(input)
+}
+
+// UpdateOrCreateConfig reads existing config or generates a new one
+func UpdateOrCreateConfig(input ConfigInput) (*Config, error) {
+	if !configFileIsExists(input.ConfigPath) {
+		log.Infof("generating new config %s", input.ConfigPath)
+		cfg, err := createNewConfig(input)
+		if err != nil {
+			return nil, err
+		}
+		err = WriteOutConfig(input.ConfigPath, cfg)
+		return cfg, err
+	}
+
+	if isPreSharedKeyHidden(input.PreSharedKey) {
+		input.PreSharedKey = nil
+	}
+	return update(input)
+}
+
+// CreateInMemoryConfig generate a new config but do not write out it to the store
+func CreateInMemoryConfig(input ConfigInput) (*Config, error) {
+	return createNewConfig(input)
+}
+
+// WriteOutConfig write put the prepared config to the given path
+func WriteOutConfig(path string, config *Config) error {
+	return util.WriteJson(path, config)
+}
+
+// createNewConfig creates a new config generating a new Wireguard key and saving to file
+func createNewConfig(input ConfigInput) (*Config, error) {
+	wgKey := generateKey()
+	pem, err := ssh.GeneratePrivateKey(ssh.ED25519)
+	if err != nil {
+		return nil, err
+	}
+	config := &Config{
+		SSHKey:               string(pem),
+		PrivateKey:           wgKey,
+		WgIface:              iface.WgInterfaceDefault,
+		WgPort:               iface.DefaultWgPort,
+		IFaceBlackList:       []string{},
+		DisableIPv6Discovery: false,
+		NATExternalIPs:       input.NATExternalIPs,
+		CustomDNSAddress:     string(input.CustomDNSAddress),
+	}
+
+	defaultManagementURL, err := parseURL("Management URL", DefaultManagementURL)
+	if err != nil {
+		return nil, err
+	}
+
+	config.ManagementURL = defaultManagementURL
+	if input.ManagementURL != "" {
+		URL, err := parseURL("Management URL", input.ManagementURL)
+		if err != nil {
+			return nil, err
+		}
+		config.ManagementURL = URL
+	}
+
+	if input.PreSharedKey != nil {
+		config.PreSharedKey = *input.PreSharedKey
+	}
+
+	defaultAdminURL, err := parseURL("Admin URL", DefaultAdminURL)
+	if err != nil {
+		return nil, err
+	}
+
+	config.AdminURL = defaultAdminURL
+	if input.AdminURL != "" {
+		newURL, err := parseURL("Admin Panel URL", input.AdminURL)
+		if err != nil {
+			return nil, err
+		}
+		config.AdminURL = newURL
+	}
+
+	config.IFaceBlackList = defaultInterfaceBlacklist
+	return config, nil
+}
+
+func update(input ConfigInput) (*Config, error) {
+	config := &Config{}
+
+	if _, err := util.ReadJson(input.ConfigPath, config); err != nil {
+		return nil, err
+	}
+
+	refresh := false
+
+	if input.ManagementURL != "" && config.ManagementURL.String() != input.ManagementURL {
+		log.Infof("new Management URL provided, updated to %s (old value %s)",
+			input.ManagementURL, config.ManagementURL)
+		newURL, err := parseURL("Management URL", input.ManagementURL)
+		if err != nil {
+			return nil, err
+		}
+		config.ManagementURL = newURL
+		refresh = true
+	}
+
+	if input.AdminURL != "" && (config.AdminURL == nil || config.AdminURL.String() != input.AdminURL) {
+		log.Infof("new Admin Panel URL provided, updated to %s (old value %s)",
+			input.AdminURL, config.AdminURL)
+		newURL, err := parseURL("Admin Panel URL", input.AdminURL)
+		if err != nil {
+			return nil, err
+		}
+		config.AdminURL = newURL
+		refresh = true
+	}
+
+	if input.PreSharedKey != nil && config.PreSharedKey != *input.PreSharedKey {
+		if *input.PreSharedKey != "" {
+			log.Infof("new pre-shared key provides, updated to %s (old value %s)",
+				*input.PreSharedKey, config.PreSharedKey)
+			config.PreSharedKey = *input.PreSharedKey
+			refresh = true
+		}
+	}
+
+	if config.SSHKey == "" {
+		pem, err := ssh.GeneratePrivateKey(ssh.ED25519)
+		if err != nil {
+			return nil, err
+		}
+		config.SSHKey = string(pem)
+		refresh = true
+	}
+
+	if config.WgPort == 0 {
+		config.WgPort = iface.DefaultWgPort
+		refresh = true
+	}
+	if input.NATExternalIPs != nil && len(config.NATExternalIPs) != len(input.NATExternalIPs) {
+		config.NATExternalIPs = input.NATExternalIPs
+		refresh = true
+	}
+
+	if input.CustomDNSAddress != nil {
+		config.CustomDNSAddress = string(input.CustomDNSAddress)
+		refresh = true
+	}
+
+	if refresh {
+		// since we have new management URL, we need to update config file
+		if err := util.WriteJson(input.ConfigPath, config); err != nil {
+			return nil, err
+		}
+	}
+
+	return config, nil
+}
+
+// parseURL parses and validates a service URL
+func parseURL(serviceName, serviceURL string) (*url.URL, error) {
+	parsedMgmtURL, err := url.ParseRequestURI(serviceURL)
+	if err != nil {
+		log.Errorf("failed parsing %s URL %s: [%s]", serviceName, serviceURL, err.Error())
+		return nil, err
+	}
+
+	if parsedMgmtURL.Scheme != "https" && parsedMgmtURL.Scheme != "http" {
+		return nil, fmt.Errorf(
+			"invalid %s URL provided %s. Supported format [http|https]://[host]:[port]",
+			serviceName, serviceURL)
+	}
+
+	if parsedMgmtURL.Port() == "" {
+		switch parsedMgmtURL.Scheme {
+		case "https":
+			parsedMgmtURL.Host = parsedMgmtURL.Host + ":443"
+		case "http":
+			parsedMgmtURL.Host = parsedMgmtURL.Host + ":80"
+		default:
+			log.Infof("unable to determine a default port for schema %s in URL %s", parsedMgmtURL.Scheme, serviceURL)
+		}
+	}
+
+	return parsedMgmtURL, err
+}
+
+// generateKey generates a new Wireguard private key
+func generateKey() string {
+	key, err := wgtypes.GeneratePrivateKey()
+	if err != nil {
+		panic(err)
+	}
+	return key.String()
+}
+
+// don't overwrite pre-shared key if we receive asterisks from UI
+func isPreSharedKeyHidden(preSharedKey *string) bool {
+	if preSharedKey != nil && *preSharedKey == "**********" {
+		return true
+	}
+	return false
+}
+
+func configFileIsExists(path string) bool {
+	_, err := os.Stat(path)
+	return !os.IsNotExist(err)
+}

client/internal/config_test.go

@@ -0,0 +1,139 @@
+package internal
+
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/netbirdio/netbird/util"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetConfig(t *testing.T) {
+	// case 1: new default config has to be generated
+	config, err := UpdateOrCreateConfig(ConfigInput{
+		ConfigPath: filepath.Join(t.TempDir(), "config.json"),
+	})
+
+	if err != nil {
+		return
+	}
+
+	assert.Equal(t, config.ManagementURL.String(), DefaultManagementURL)
+	assert.Equal(t, config.AdminURL.String(), DefaultAdminURL)
+
+	if err != nil {
+		return
+	}
+	managementURL := "https://test.management.url:33071"
+	adminURL := "https://app.admin.url:443"
+	path := filepath.Join(t.TempDir(), "config.json")
+	preSharedKey := "preSharedKey"
+
+	// case 2: new config has to be generated
+	config, err = UpdateOrCreateConfig(ConfigInput{
+		ManagementURL: managementURL,
+		AdminURL:      adminURL,
+		ConfigPath:    path,
+		PreSharedKey:  &preSharedKey,
+	})
+	if err != nil {
+		return
+	}
+
+	assert.Equal(t, config.ManagementURL.String(), managementURL)
+	assert.Equal(t, config.PreSharedKey, preSharedKey)
+
+	if _, err := os.Stat(path); errors.Is(err, os.ErrNotExist) {
+		t.Errorf("config file was expected to be created under path %s", path)
+	}
+
+	// case 3: existing config -> fetch it
+	config, err = UpdateOrCreateConfig(ConfigInput{
+		ManagementURL: managementURL,
+		AdminURL:      adminURL,
+		ConfigPath:    path,
+		PreSharedKey:  &preSharedKey,
+	})
+	if err != nil {
+		return
+	}
+
+	assert.Equal(t, config.ManagementURL.String(), managementURL)
+	assert.Equal(t, config.PreSharedKey, preSharedKey)
+
+	// case 4: new empty pre-shared key config -> fetch it
+	newPreSharedKey := ""
+	config, err = UpdateOrCreateConfig(ConfigInput{
+		ManagementURL: managementURL,
+		AdminURL:      adminURL,
+		ConfigPath:    path,
+		PreSharedKey:  &newPreSharedKey,
+	})
+	if err != nil {
+		return
+	}
+
+	assert.Equal(t, config.ManagementURL.String(), managementURL)
+	assert.Equal(t, config.PreSharedKey, preSharedKey)
+
+	// case 5: existing config, but new managementURL has been provided -> update config
+	newManagementURL := "https://test.newManagement.url:33071"
+	config, err = UpdateOrCreateConfig(ConfigInput{
+		ManagementURL: newManagementURL,
+		AdminURL:      adminURL,
+		ConfigPath:    path,
+		PreSharedKey:  &preSharedKey,
+	})
+	if err != nil {
+		return
+	}
+
+	assert.Equal(t, config.ManagementURL.String(), newManagementURL)
+	assert.Equal(t, config.PreSharedKey, preSharedKey)
+
+	// read once more to make sure that config file has been updated with the new management URL
+	readConf, err := util.ReadJson(path, config)
+	if err != nil {
+		return
+	}
+	assert.Equal(t, readConf.(*Config).ManagementURL.String(), newManagementURL)
+}
+
+func TestHiddenPreSharedKey(t *testing.T) {
+	hidden := "**********"
+	samplePreSharedKey := "mysecretpresharedkey"
+	tests := []struct {
+		name         string
+		preSharedKey *string
+		want         string
+	}{
+		{"nil", nil, ""},
+		{"hidden", &hidden, ""},
+		{"filled", &samplePreSharedKey, samplePreSharedKey},
+	}
+
+	// generate default cfg
+	cfgFile := filepath.Join(t.TempDir(), "config.json")
+	_, _ = UpdateOrCreateConfig(ConfigInput{
+		ConfigPath: cfgFile,
+	})
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg, err := UpdateOrCreateConfig(ConfigInput{
+				ConfigPath:   cfgFile,
+				PreSharedKey: tt.preSharedKey,
+			})
+
+			if err != nil {
+				t.Fatalf("failed to get cfg: %s", err)
+			}
+
+			if cfg.PreSharedKey != tt.want {
+				t.Fatalf("invalid preshared key: '%s', expected: '%s' ", cfg.PreSharedKey, tt.want)
+			}
+		})
+	}
+}

client/internal/connect.go

@@ -0,0 +1,362 @@
+package internal
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	"google.golang.org/grpc/codes"
+	gstatus "google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/internal/dns"
+	"github.com/netbirdio/netbird/client/internal/peer"
+	"github.com/netbirdio/netbird/client/internal/routemanager"
+	"github.com/netbirdio/netbird/client/internal/stdnet"
+	"github.com/netbirdio/netbird/client/ssh"
+	"github.com/netbirdio/netbird/client/system"
+	"github.com/netbirdio/netbird/iface"
+	mgm "github.com/netbirdio/netbird/management/client"
+	mgmProto "github.com/netbirdio/netbird/management/proto"
+	signal "github.com/netbirdio/netbird/signal/client"
+)
+
+// RunClient with main logic.
+func RunClient(ctx context.Context, config *Config, statusRecorder *peer.Status) error {
+	return runClient(ctx, config, statusRecorder, MobileDependency{})
+}
+
+// RunClientMobile with main logic on mobile system
+func RunClientMobile(ctx context.Context, config *Config, statusRecorder *peer.Status, tunAdapter iface.TunAdapter, iFaceDiscover stdnet.ExternalIFaceDiscover, routeListener routemanager.RouteListener, dnsAddresses []string, dnsReadyListener dns.ReadyListener) error {
+	// in case of non Android os these variables will be nil
+	mobileDependency := MobileDependency{
+		TunAdapter:       tunAdapter,
+		IFaceDiscover:    iFaceDiscover,
+		RouteListener:    routeListener,
+		HostDNSAddresses: dnsAddresses,
+		DnsReadyListener: dnsReadyListener,
+	}
+	return runClient(ctx, config, statusRecorder, mobileDependency)
+}
+
+func runClient(ctx context.Context, config *Config, statusRecorder *peer.Status, mobileDependency MobileDependency) error {
+	backOff := &backoff.ExponentialBackOff{
+		InitialInterval:     time.Second,
+		RandomizationFactor: 1,
+		Multiplier:          1.7,
+		MaxInterval:         15 * time.Second,
+		MaxElapsedTime:      3 * 30 * 24 * time.Hour, // 3 months
+		Stop:                backoff.Stop,
+		Clock:               backoff.SystemClock,
+	}
+
+	state := CtxGetState(ctx)
+	defer func() {
+		s, err := state.Status()
+		if err != nil || s != StatusNeedsLogin {
+			state.Set(StatusIdle)
+		}
+	}()
+
+	wrapErr := state.Wrap
+	myPrivateKey, err := wgtypes.ParseKey(config.PrivateKey)
+	if err != nil {
+		log.Errorf("failed parsing Wireguard key %s: [%s]", config.PrivateKey, err.Error())
+		return wrapErr(err)
+	}
+
+	var mgmTlsEnabled bool
+	if config.ManagementURL.Scheme == "https" {
+		mgmTlsEnabled = true
+	}
+
+	publicSSHKey, err := ssh.GeneratePublicKey([]byte(config.SSHKey))
+	if err != nil {
+		return err
+	}
+
+	defer statusRecorder.ClientStop()
+	operation := func() error {
+		// if context cancelled we not start new backoff cycle
+		select {
+		case <-ctx.Done():
+			return nil
+		default:
+		}
+
+		state.Set(StatusConnecting)
+
+		engineCtx, cancel := context.WithCancel(ctx)
+		defer func() {
+			statusRecorder.MarkManagementDisconnected()
+			statusRecorder.CleanLocalPeerState()
+			cancel()
+		}()
+
+		log.Debugf("conecting to the Management service %s", config.ManagementURL.Host)
+		mgmClient, err := mgm.NewClient(engineCtx, config.ManagementURL.Host, myPrivateKey, mgmTlsEnabled)
+		if err != nil {
+			return wrapErr(gstatus.Errorf(codes.FailedPrecondition, "failed connecting to Management Service : %s", err))
+		}
+		mgmNotifier := statusRecorderToMgmConnStateNotifier(statusRecorder)
+		mgmClient.SetConnStateListener(mgmNotifier)
+
+		log.Debugf("connected to the Management service %s", config.ManagementURL.Host)
+		defer func() {
+			err = mgmClient.Close()
+			if err != nil {
+				log.Warnf("failed to close the Management service client %v", err)
+			}
+		}()
+
+		// connect (just a connection, no stream yet) and login to Management Service to get an initial global Wiretrustee config
+		loginResp, err := loginToManagement(engineCtx, mgmClient, publicSSHKey)
+		if err != nil {
+			log.Debug(err)
+			if s, ok := gstatus.FromError(err); ok && (s.Code() == codes.PermissionDenied) {
+				state.Set(StatusNeedsLogin)
+				return backoff.Permanent(wrapErr(err)) // unrecoverable error
+			}
+			return wrapErr(err)
+		}
+		statusRecorder.MarkManagementConnected()
+
+		localPeerState := peer.LocalPeerState{
+			IP:              loginResp.GetPeerConfig().GetAddress(),
+			PubKey:          myPrivateKey.PublicKey().String(),
+			KernelInterface: iface.WireGuardModuleIsLoaded(),
+			FQDN:            loginResp.GetPeerConfig().GetFqdn(),
+		}
+
+		statusRecorder.UpdateLocalPeerState(localPeerState)
+
+		signalURL := fmt.Sprintf("%s://%s",
+			strings.ToLower(loginResp.GetWiretrusteeConfig().GetSignal().GetProtocol().String()),
+			loginResp.GetWiretrusteeConfig().GetSignal().GetUri(),
+		)
+
+		statusRecorder.UpdateSignalAddress(signalURL)
+
+		statusRecorder.MarkSignalDisconnected()
+		defer statusRecorder.MarkSignalDisconnected()
+
+		// with the global Wiretrustee config in hand connect (just a connection, no stream yet) Signal
+		signalClient, err := connectToSignal(engineCtx, loginResp.GetWiretrusteeConfig(), myPrivateKey)
+		if err != nil {
+			log.Error(err)
+			return wrapErr(err)
+		}
+		defer func() {
+			err = signalClient.Close()
+			if err != nil {
+				log.Warnf("failed closing Signal service client %v", err)
+			}
+		}()
+
+		signalNotifier := statusRecorderToSignalConnStateNotifier(statusRecorder)
+		signalClient.SetConnStateListener(signalNotifier)
+
+		statusRecorder.MarkSignalConnected()
+
+		peerConfig := loginResp.GetPeerConfig()
+
+		engineConfig, err := createEngineConfig(myPrivateKey, config, peerConfig)
+		if err != nil {
+			log.Error(err)
+			return wrapErr(err)
+		}
+
+		engine := NewEngine(engineCtx, cancel, signalClient, mgmClient, engineConfig, mobileDependency, statusRecorder)
+		err = engine.Start()
+		if err != nil {
+			log.Errorf("error while starting Netbird Connection Engine: %s", err)
+			return wrapErr(err)
+		}
+
+		log.Print("Netbird engine started, my IP is: ", peerConfig.Address)
+		state.Set(StatusConnected)
+
+		statusRecorder.ClientStart()
+
+		<-engineCtx.Done()
+		statusRecorder.ClientTeardown()
+
+		backOff.Reset()
+
+		err = engine.Stop()
+		if err != nil {
+			log.Errorf("failed stopping engine %v", err)
+			return wrapErr(err)
+		}
+
+		log.Info("stopped NetBird client")
+
+		if _, err := state.Status(); err == ErrResetConnection {
+			return err
+		}
+
+		return nil
+	}
+
+	err = backoff.Retry(operation, backOff)
+	if err != nil {
+		log.Debugf("exiting client retry loop due to unrecoverable error: %s", err)
+		if s, ok := gstatus.FromError(err); ok && (s.Code() == codes.PermissionDenied) {
+			state.Set(StatusNeedsLogin)
+		}
+		return err
+	}
+	return nil
+}
+
+// createEngineConfig converts configuration received from Management Service to EngineConfig
+func createEngineConfig(key wgtypes.Key, config *Config, peerConfig *mgmProto.PeerConfig) (*EngineConfig, error) {
+	engineConf := &EngineConfig{
+		WgIfaceName:          config.WgIface,
+		WgAddr:               peerConfig.Address,
+		IFaceBlackList:       config.IFaceBlackList,
+		DisableIPv6Discovery: config.DisableIPv6Discovery,
+		WgPrivateKey:         key,
+		WgPort:               config.WgPort,
+		SSHKey:               []byte(config.SSHKey),
+		NATExternalIPs:       config.NATExternalIPs,
+		CustomDNSAddress:     config.CustomDNSAddress,
+	}
+
+	if config.PreSharedKey != "" {
+		preSharedKey, err := wgtypes.ParseKey(config.PreSharedKey)
+		if err != nil {
+			return nil, err
+		}
+		engineConf.PreSharedKey = &preSharedKey
+	}
+
+	return engineConf, nil
+}
+
+// connectToSignal creates Signal Service client and established a connection
+func connectToSignal(ctx context.Context, wtConfig *mgmProto.WiretrusteeConfig, ourPrivateKey wgtypes.Key) (*signal.GrpcClient, error) {
+	var sigTLSEnabled bool
+	if wtConfig.Signal.Protocol == mgmProto.HostConfig_HTTPS {
+		sigTLSEnabled = true
+	} else {
+		sigTLSEnabled = false
+	}
+
+	signalClient, err := signal.NewClient(ctx, wtConfig.Signal.Uri, ourPrivateKey, sigTLSEnabled)
+	if err != nil {
+		log.Errorf("error while connecting to the Signal Exchange Service %s: %s", wtConfig.Signal.Uri, err)
+		return nil, gstatus.Errorf(codes.FailedPrecondition, "failed connecting to Signal Service : %s", err)
+	}
+
+	return signalClient, nil
+}
+
+// loginToManagement creates Management Services client, establishes a connection, logs-in and gets a global Wiretrustee config (signal, turn, stun hosts, etc)
+func loginToManagement(ctx context.Context, client mgm.Client, pubSSHKey []byte) (*mgmProto.LoginResponse, error) {
+
+	serverPublicKey, err := client.GetServerPublicKey()
+	if err != nil {
+		return nil, gstatus.Errorf(codes.FailedPrecondition, "failed while getting Management Service public key: %s", err)
+	}
+
+	sysInfo := system.GetInfo(ctx)
+	loginResp, err := client.Login(*serverPublicKey, sysInfo, pubSSHKey)
+	if err != nil {
+		return nil, err
+	}
+
+	return loginResp, nil
+}
+
+// UpdateOldManagementPort checks whether client can switch to the new Management port 443.
+// If it can switch, then it updates the config and returns a new one. Otherwise, it returns the provided config.
+// The check is performed only for the NetBird's managed version.
+func UpdateOldManagementPort(ctx context.Context, config *Config, configPath string) (*Config, error) {
+
+	defaultManagementURL, err := parseURL("Management URL", DefaultManagementURL)
+	if err != nil {
+		return nil, err
+	}
+
+	if config.ManagementURL.Hostname() != defaultManagementURL.Hostname() {
+		// only do the check for the NetBird's managed version
+		return config, nil
+	}
+
+	var mgmTlsEnabled bool
+	if config.ManagementURL.Scheme == "https" {
+		mgmTlsEnabled = true
+	}
+
+	if !mgmTlsEnabled {
+		// only do the check for HTTPs scheme (the hosted version of the Management service is always HTTPs)
+		return config, nil
+	}
+
+	if mgmTlsEnabled && config.ManagementURL.Port() == fmt.Sprintf("%d", ManagementLegacyPort) {
+
+		newURL, err := parseURL("Management URL", fmt.Sprintf("%s://%s:%d",
+			config.ManagementURL.Scheme, config.ManagementURL.Hostname(), 443))
+		if err != nil {
+			return nil, err
+		}
+		// here we check whether we could switch from the legacy 33073 port to the new 443
+		log.Infof("attempting to switch from the legacy Management URL %s to the new one %s",
+			config.ManagementURL.String(), newURL.String())
+		key, err := wgtypes.ParseKey(config.PrivateKey)
+		if err != nil {
+			log.Infof("couldn't switch to the new Management %s", newURL.String())
+			return config, err
+		}
+
+		client, err := mgm.NewClient(ctx, newURL.Host, key, mgmTlsEnabled)
+		if err != nil {
+			log.Infof("couldn't switch to the new Management %s", newURL.String())
+			return config, err
+		}
+		defer func() {
+			err = client.Close()
+			if err != nil {
+				log.Warnf("failed to close the Management service client %v", err)
+			}
+		}()
+
+		// gRPC check
+		_, err = client.GetServerPublicKey()
+		if err != nil {
+			log.Infof("couldn't switch to the new Management %s", newURL.String())
+			return nil, err
+		}
+
+		// everything is alright => update the config
+		newConfig, err := UpdateConfig(ConfigInput{
+			ManagementURL: newURL.String(),
+			ConfigPath:    configPath,
+		})
+		if err != nil {
+			log.Infof("couldn't switch to the new Management %s", newURL.String())
+			return config, fmt.Errorf("failed updating config file: %v", err)
+		}
+		log.Infof("successfully switched to the new Management URL: %s", newURL.String())
+
+		return newConfig, nil
+	}
+
+	return config, nil
+}
+
+func statusRecorderToMgmConnStateNotifier(statusRecorder *peer.Status) mgm.ConnStateNotifier {
+	var sri interface{} = statusRecorder
+	mgmNotifier, _ := sri.(mgm.ConnStateNotifier)
+	return mgmNotifier
+}
+
+func statusRecorderToSignalConnStateNotifier(statusRecorder *peer.Status) signal.ConnStateNotifier {
+	var sri interface{} = statusRecorder
+	notifier, _ := sri.(signal.ConnStateNotifier)
+	return notifier
+}

client/internal/device_auth.go

@@ -0,0 +1,134 @@
+package internal
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+
+	mgm "github.com/netbirdio/netbird/management/client"
+)
+
+// DeviceAuthorizationFlow represents Device Authorization Flow information
+type DeviceAuthorizationFlow struct {
+	Provider       string
+	ProviderConfig DeviceAuthProviderConfig
+}
+
+// DeviceAuthProviderConfig has all attributes needed to initiate a device authorization flow
+type DeviceAuthProviderConfig struct {
+	// ClientID An IDP application client id
+	ClientID string
+	// ClientSecret An IDP application client secret
+	ClientSecret string
+	// Domain An IDP API domain
+	// Deprecated. Use OIDCConfigEndpoint instead
+	Domain string
+	// Audience An Audience for to authorization validation
+	Audience string
+	// TokenEndpoint is the endpoint of an IDP manager where clients can obtain access token
+	TokenEndpoint string
+	// DeviceAuthEndpoint is the endpoint of an IDP manager where clients can obtain device authorization code
+	DeviceAuthEndpoint string
+	// Scopes provides the scopes to be included in the token request
+	Scope string
+	// UseIDToken indicates if the id token should be used for authentication
+	UseIDToken bool
+}
+
+// GetDeviceAuthorizationFlowInfo initialize a DeviceAuthorizationFlow instance and return with it
+func GetDeviceAuthorizationFlowInfo(ctx context.Context, privateKey string, mgmURL *url.URL) (DeviceAuthorizationFlow, error) {
+	// validate our peer's Wireguard PRIVATE key
+	myPrivateKey, err := wgtypes.ParseKey(privateKey)
+	if err != nil {
+		log.Errorf("failed parsing Wireguard key %s: [%s]", privateKey, err.Error())
+		return DeviceAuthorizationFlow{}, err
+	}
+
+	var mgmTLSEnabled bool
+	if mgmURL.Scheme == "https" {
+		mgmTLSEnabled = true
+	}
+
+	log.Debugf("connecting to Management Service %s", mgmURL.String())
+	mgmClient, err := mgm.NewClient(ctx, mgmURL.Host, myPrivateKey, mgmTLSEnabled)
+	if err != nil {
+		log.Errorf("failed connecting to Management Service %s %v", mgmURL.String(), err)
+		return DeviceAuthorizationFlow{}, err
+	}
+	log.Debugf("connected to the Management service %s", mgmURL.String())
+
+	defer func() {
+		err = mgmClient.Close()
+		if err != nil {
+			log.Warnf("failed to close the Management service client %v", err)
+		}
+	}()
+
+	serverKey, err := mgmClient.GetServerPublicKey()
+	if err != nil {
+		log.Errorf("failed while getting Management Service public key: %v", err)
+		return DeviceAuthorizationFlow{}, err
+	}
+
+	protoDeviceAuthorizationFlow, err := mgmClient.GetDeviceAuthorizationFlow(*serverKey)
+	if err != nil {
+		if s, ok := status.FromError(err); ok && s.Code() == codes.NotFound {
+			log.Warnf("server couldn't find device flow, contact admin: %v", err)
+			return DeviceAuthorizationFlow{}, err
+		}
+		log.Errorf("failed to retrieve device flow: %v", err)
+		return DeviceAuthorizationFlow{}, err
+	}
+
+	deviceAuthorizationFlow := DeviceAuthorizationFlow{
+		Provider: protoDeviceAuthorizationFlow.Provider.String(),
+
+		ProviderConfig: DeviceAuthProviderConfig{
+			Audience:           protoDeviceAuthorizationFlow.GetProviderConfig().GetAudience(),
+			ClientID:           protoDeviceAuthorizationFlow.GetProviderConfig().GetClientID(),
+			ClientSecret:       protoDeviceAuthorizationFlow.GetProviderConfig().GetClientSecret(),
+			Domain:             protoDeviceAuthorizationFlow.GetProviderConfig().Domain,
+			TokenEndpoint:      protoDeviceAuthorizationFlow.GetProviderConfig().GetTokenEndpoint(),
+			DeviceAuthEndpoint: protoDeviceAuthorizationFlow.GetProviderConfig().GetDeviceAuthEndpoint(),
+			Scope:              protoDeviceAuthorizationFlow.GetProviderConfig().GetScope(),
+			UseIDToken:         protoDeviceAuthorizationFlow.GetProviderConfig().GetUseIDToken(),
+		},
+	}
+
+	// keep compatibility with older management versions
+	if deviceAuthorizationFlow.ProviderConfig.Scope == "" {
+		deviceAuthorizationFlow.ProviderConfig.Scope = "openid"
+	}
+
+	err = isDeviceAuthProviderConfigValid(deviceAuthorizationFlow.ProviderConfig)
+	if err != nil {
+		return DeviceAuthorizationFlow{}, err
+	}
+
+	return deviceAuthorizationFlow, nil
+}
+
+func isDeviceAuthProviderConfigValid(config DeviceAuthProviderConfig) error {
+	errorMSGFormat := "invalid provider configuration received from management: %s value is empty. Contact your NetBird administrator"
+	if config.Audience == "" {
+		return fmt.Errorf(errorMSGFormat, "Audience")
+	}
+	if config.ClientID == "" {
+		return fmt.Errorf(errorMSGFormat, "Client ID")
+	}
+	if config.TokenEndpoint == "" {
+		return fmt.Errorf(errorMSGFormat, "Token Endpoint")
+	}
+	if config.DeviceAuthEndpoint == "" {
+		return fmt.Errorf(errorMSGFormat, "Device Auth Endpoint")
+	}
+	if config.Scope == "" {
+		return fmt.Errorf(errorMSGFormat, "Device Auth Scopes")
+	}
+	return nil
+}

client/internal/dns/dbus_linux.go

@@ -0,0 +1,43 @@
+//go:build !android
+
+package dns
+
+import (
+	"context"
+	"github.com/godbus/dbus/v5"
+	log "github.com/sirupsen/logrus"
+	"time"
+)
+
+const dbusDefaultFlag = 0
+
+func isDbusListenerRunning(dest string, path dbus.ObjectPath) bool {
+	obj, closeConn, err := getDbusObject(dest, path)
+	if err != nil {
+		return false
+	}
+	defer closeConn()
+
+	ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Second)
+	defer cancel()
+
+	err = obj.CallWithContext(ctx, "org.freedesktop.DBus.Peer.Ping", 0).Store()
+	return err == nil
+}
+
+func getDbusObject(dest string, path dbus.ObjectPath) (dbus.BusObject, func(), error) {
+	conn, err := dbus.SystemBus()
+	if err != nil {
+		return nil, nil, err
+	}
+	obj := conn.Object(dest, path)
+
+	closeFunc := func() {
+		closeErr := conn.Close()
+		if closeErr != nil {
+			log.Warnf("got an error closing dbus connection, err: %s", closeErr)
+		}
+	}
+
+	return obj, closeFunc, nil
+}

client/internal/dns/file_linux.go

@@ -0,0 +1,162 @@
+//go:build !android
+
+package dns
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	fileGeneratedResolvConfContentHeader      = "# Generated by NetBird"
+	fileGeneratedResolvConfSearchBeginContent = "search "
+	fileGeneratedResolvConfContentFormat      = fileGeneratedResolvConfContentHeader +
+		"\n# If needed you can restore the original file by copying back %s\n\nnameserver %s\n" +
+		fileGeneratedResolvConfSearchBeginContent + "%s\n"
+)
+
+const (
+	fileDefaultResolvConfBackupLocation = defaultResolvConfPath + ".original.netbird"
+	fileMaxLineCharsLimit               = 256
+	fileMaxNumberOfSearchDomains        = 6
+)
+
+var fileSearchLineBeginCharCount = len(fileGeneratedResolvConfSearchBeginContent)
+
+type fileConfigurator struct {
+	originalPerms os.FileMode
+}
+
+func newFileConfigurator() (hostManager, error) {
+	return &fileConfigurator{}, nil
+}
+
+func (f *fileConfigurator) supportCustomPort() bool {
+	return false
+}
+
+func (f *fileConfigurator) applyDNSConfig(config hostDNSConfig) error {
+	backupFileExist := false
+	_, err := os.Stat(fileDefaultResolvConfBackupLocation)
+	if err == nil {
+		backupFileExist = true
+	}
+
+	if !config.routeAll {
+		if backupFileExist {
+			err = f.restore()
+			if err != nil {
+				return fmt.Errorf("unable to configure DNS for this peer using file manager without a Primary nameserver group. Restoring the original file return err: %s", err)
+			}
+		}
+		return fmt.Errorf("unable to configure DNS for this peer using file manager without a nameserver group with all domains configured")
+	}
+	managerType, err := getOSDNSManagerType()
+	if err != nil {
+		return err
+	}
+	switch managerType {
+	case fileManager, netbirdManager:
+		if !backupFileExist {
+			err = f.backup()
+			if err != nil {
+				return fmt.Errorf("unable to backup the resolv.conf file")
+			}
+		}
+	default:
+		// todo improve this and maybe restart DNS manager from scratch
+		return fmt.Errorf("something happened and file manager is not your prefered host dns configurator, restart the agent")
+	}
+
+	var searchDomains string
+	appendedDomains := 0
+	for _, dConf := range config.domains {
+		if dConf.matchOnly || dConf.disabled {
+			continue
+		}
+		if appendedDomains >= fileMaxNumberOfSearchDomains {
+			// lets log all skipped domains
+			log.Infof("already appended %d domains to search list. Skipping append of %s domain", fileMaxNumberOfSearchDomains, dConf.domain)
+			continue
+		}
+		if fileSearchLineBeginCharCount+len(searchDomains) > fileMaxLineCharsLimit {
+			// lets log all skipped domains
+			log.Infof("search list line is larger than %d characters. Skipping append of %s domain", fileMaxLineCharsLimit, dConf.domain)
+			continue
+		}
+
+		searchDomains += " " + dConf.domain
+		appendedDomains++
+	}
+	content := fmt.Sprintf(fileGeneratedResolvConfContentFormat, fileDefaultResolvConfBackupLocation, config.serverIP, searchDomains)
+	err = writeDNSConfig(content, defaultResolvConfPath, f.originalPerms)
+	if err != nil {
+		err = f.restore()
+		if err != nil {
+			log.Errorf("attempt to restore default file failed with error: %s", err)
+		}
+		return err
+	}
+	log.Infof("created a NetBird managed %s file with your DNS settings. Added %d search domains. Search list: %s", defaultResolvConfPath, appendedDomains, searchDomains)
+	return nil
+}
+
+func (f *fileConfigurator) restoreHostDNS() error {
+	return f.restore()
+}
+
+func (f *fileConfigurator) backup() error {
+	stats, err := os.Stat(defaultResolvConfPath)
+	if err != nil {
+		return fmt.Errorf("got an error while checking stats for %s file. Error: %s", defaultResolvConfPath, err)
+	}
+
+	f.originalPerms = stats.Mode()
+
+	err = copyFile(defaultResolvConfPath, fileDefaultResolvConfBackupLocation)
+	if err != nil {
+		return fmt.Errorf("got error while backing up the %s file. Error: %s", defaultResolvConfPath, err)
+	}
+	return nil
+}
+
+func (f *fileConfigurator) restore() error {
+	err := copyFile(fileDefaultResolvConfBackupLocation, defaultResolvConfPath)
+	if err != nil {
+		return fmt.Errorf("got error while restoring the %s file from %s. Error: %s", defaultResolvConfPath, fileDefaultResolvConfBackupLocation, err)
+	}
+
+	return os.RemoveAll(fileDefaultResolvConfBackupLocation)
+}
+
+func writeDNSConfig(content, fileName string, permissions os.FileMode) error {
+	log.Debugf("creating managed file %s", fileName)
+	var buf bytes.Buffer
+	buf.WriteString(content)
+	err := os.WriteFile(fileName, buf.Bytes(), permissions)
+	if err != nil {
+		return fmt.Errorf("got an creating resolver file %s. Error: %s", fileName, err)
+	}
+	return nil
+}
+
+func copyFile(src, dest string) error {
+	stats, err := os.Stat(src)
+	if err != nil {
+		return fmt.Errorf("got an error while checking stats for %s file when copying it. Error: %s", src, err)
+	}
+
+	bytesRead, err := os.ReadFile(src)
+	if err != nil {
+		return fmt.Errorf("got an error while reading the file %s file for copy. Error: %s", src, err)
+	}
+
+	err = os.WriteFile(dest, bytesRead, stats.Mode())
+	if err != nil {
+		return fmt.Errorf("got an writing the destination file %s for copy. Error: %s", dest, err)
+	}
+	return nil
+}

client/internal/dns/forwarder/bpf_bpfeb.go

@@ -0,0 +1,123 @@
+// Code generated by bpf2go; DO NOT EDIT.
+//go:build arm64be || armbe || mips || mips64 || mips64p32 || ppc64 || s390 || s390x || sparc || sparc64
+// +build arm64be armbe mips mips64 mips64p32 ppc64 s390 s390x sparc sparc64
+
+package forwarder
+
+import (
+	"bytes"
+	_ "embed"
+	"fmt"
+	"io"
+
+	"github.com/cilium/ebpf"
+)
+
+// loadBpf returns the embedded CollectionSpec for bpf.
+func loadBpf() (*ebpf.CollectionSpec, error) {
+	reader := bytes.NewReader(_BpfBytes)
+	spec, err := ebpf.LoadCollectionSpecFromReader(reader)
+	if err != nil {
+		return nil, fmt.Errorf("can't load bpf: %w", err)
+	}
+
+	return spec, err
+}
+
+// loadBpfObjects loads bpf and converts it into a struct.
+//
+// The following types are suitable as obj argument:
+//
+//	*bpfObjects
+//	*bpfPrograms
+//	*bpfMaps
+//
+// See ebpf.CollectionSpec.LoadAndAssign documentation for details.
+func loadBpfObjects(obj interface{}, opts *ebpf.CollectionOptions) error {
+	spec, err := loadBpf()
+	if err != nil {
+		return err
+	}
+
+	return spec.LoadAndAssign(obj, opts)
+}
+
+// bpfSpecs contains maps and programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfSpecs struct {
+	bpfProgramSpecs
+	bpfMapSpecs
+}
+
+// bpfSpecs contains programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfProgramSpecs struct {
+	XdpDnsPortFwd *ebpf.ProgramSpec `ebpf:"xdp_dns_port_fwd"`
+}
+
+// bpfMapSpecs contains maps before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfMapSpecs struct {
+	XdpIpMap   *ebpf.MapSpec `ebpf:"xdp_ip_map"`
+	XdpPortMap *ebpf.MapSpec `ebpf:"xdp_port_map"`
+}
+
+// bpfObjects contains all objects after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfObjects struct {
+	bpfPrograms
+	bpfMaps
+}
+
+func (o *bpfObjects) Close() error {
+	return _BpfClose(
+		&o.bpfPrograms,
+		&o.bpfMaps,
+	)
+}
+
+// bpfMaps contains all maps after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfMaps struct {
+	XdpIpMap   *ebpf.Map `ebpf:"xdp_ip_map"`
+	XdpPortMap *ebpf.Map `ebpf:"xdp_port_map"`
+}
+
+func (m *bpfMaps) Close() error {
+	return _BpfClose(
+		m.XdpIpMap,
+		m.XdpPortMap,
+	)
+}
+
+// bpfPrograms contains all programs after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfPrograms struct {
+	XdpDnsPortFwd *ebpf.Program `ebpf:"xdp_dns_port_fwd"`
+}
+
+func (p *bpfPrograms) Close() error {
+	return _BpfClose(
+		p.XdpDnsPortFwd,
+	)
+}
+
+func _BpfClose(closers ...io.Closer) error {
+	for _, closer := range closers {
+		if err := closer.Close(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Do not access this directly.
+//
+//go:embed bpf_bpfeb.o
+var _BpfBytes []byte

client/internal/dns/forwarder/bpf_bpfel.go

@@ -0,0 +1,123 @@
+// Code generated by bpf2go; DO NOT EDIT.
+//go:build 386 || amd64 || amd64p32 || arm || arm64 || mips64le || mips64p32le || mipsle || ppc64le || riscv64
+// +build 386 amd64 amd64p32 arm arm64 mips64le mips64p32le mipsle ppc64le riscv64
+
+package forwarder
+
+import (
+	"bytes"
+	_ "embed"
+	"fmt"
+	"io"
+
+	"github.com/cilium/ebpf"
+)
+
+// loadBpf returns the embedded CollectionSpec for bpf.
+func loadBpf() (*ebpf.CollectionSpec, error) {
+	reader := bytes.NewReader(_BpfBytes)
+	spec, err := ebpf.LoadCollectionSpecFromReader(reader)
+	if err != nil {
+		return nil, fmt.Errorf("can't load bpf: %w", err)
+	}
+
+	return spec, err
+}
+
+// loadBpfObjects loads bpf and converts it into a struct.
+//
+// The following types are suitable as obj argument:
+//
+//	*bpfObjects
+//	*bpfPrograms
+//	*bpfMaps
+//
+// See ebpf.CollectionSpec.LoadAndAssign documentation for details.
+func loadBpfObjects(obj interface{}, opts *ebpf.CollectionOptions) error {
+	spec, err := loadBpf()
+	if err != nil {
+		return err
+	}
+
+	return spec.LoadAndAssign(obj, opts)
+}
+
+// bpfSpecs contains maps and programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfSpecs struct {
+	bpfProgramSpecs
+	bpfMapSpecs
+}
+
+// bpfSpecs contains programs before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfProgramSpecs struct {
+	XdpDnsPortFwd *ebpf.ProgramSpec `ebpf:"xdp_dns_port_fwd"`
+}
+
+// bpfMapSpecs contains maps before they are loaded into the kernel.
+//
+// It can be passed ebpf.CollectionSpec.Assign.
+type bpfMapSpecs struct {
+	XdpIpMap   *ebpf.MapSpec `ebpf:"xdp_ip_map"`
+	XdpPortMap *ebpf.MapSpec `ebpf:"xdp_port_map"`
+}
+
+// bpfObjects contains all objects after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfObjects struct {
+	bpfPrograms
+	bpfMaps
+}
+
+func (o *bpfObjects) Close() error {
+	return _BpfClose(
+		&o.bpfPrograms,
+		&o.bpfMaps,
+	)
+}
+
+// bpfMaps contains all maps after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfMaps struct {
+	XdpIpMap   *ebpf.Map `ebpf:"xdp_ip_map"`
+	XdpPortMap *ebpf.Map `ebpf:"xdp_port_map"`
+}
+
+func (m *bpfMaps) Close() error {
+	return _BpfClose(
+		m.XdpIpMap,
+		m.XdpPortMap,
+	)
+}
+
+// bpfPrograms contains all programs after they have been loaded into the kernel.
+//
+// It can be passed to loadBpfObjects or ebpf.CollectionSpec.LoadAndAssign.
+type bpfPrograms struct {
+	XdpDnsPortFwd *ebpf.Program `ebpf:"xdp_dns_port_fwd"`
+}
+
+func (p *bpfPrograms) Close() error {
+	return _BpfClose(
+		p.XdpDnsPortFwd,
+	)
+}
+
+func _BpfClose(closers ...io.Closer) error {
+	for _, closer := range closers {
+		if err := closer.Close(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// Do not access this directly.
+//
+//go:embed bpf_bpfel.o
+var _BpfBytes []byte

client/internal/dns/forwarder/src/port_fwd.c

@@ -0,0 +1,100 @@
+#include <stdbool.h>
+#include <linux/if_ether.h> // ETH_P_IP
+#include <linux/udp.h>
+#include <linux/ip.h>
+#include <netinet/in.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+#define bpf_printk(fmt, ...)                                                   \
+  ({                                                                           \
+    char ____fmt[] = fmt;                                                      \
+    bpf_trace_printk(____fmt, sizeof(____fmt), ##__VA_ARGS__);                 \
+  })
+
+const __u32 map_key_dns_ip = 0;
+const __u32 map_key_dns_port = 1;
+
+struct bpf_map_def SEC("maps") xdp_ip_map = {
+	.type = BPF_MAP_TYPE_ARRAY,
+	.key_size = sizeof(__u32),
+	.value_size = sizeof(__u32),
+	.max_entries = 10,
+};
+
+struct bpf_map_def SEC("maps") xdp_port_map = {
+	.type = BPF_MAP_TYPE_ARRAY,
+	.key_size = sizeof(__u32),
+	.value_size = sizeof(__u16),
+	.max_entries = 10,
+};
+
+__be32 dns_ip = 0;
+__be16 dns_port = 0;
+
+// 13568 is 53 in big endian
+__be16 GENERAL_DNS_PORT = 13568;
+
+bool read_settings() {
+    __u16 *port_value;
+    __u32 *ip_value;
+
+    // read dns ip
+    ip_value = bpf_map_lookup_elem(&xdp_ip_map, &map_key_dns_ip);
+    if(!ip_value) {
+        return false;
+    }
+    dns_ip = htonl(*ip_value);
+
+    // read dns port
+    port_value = bpf_map_lookup_elem(&xdp_port_map, &map_key_dns_port);
+    if(!port_value) {
+        return false;
+    }
+    dns_port = htons(*port_value);
+    return true;
+}
+
+SEC("xdp")
+int xdp_dns_port_fwd(struct xdp_md *ctx) {
+    if(dns_port == 0) {
+        if(!read_settings()){
+            return XDP_PASS;
+        }
+        bpf_printk("dns port: %d", ntohs(dns_port));
+        bpf_printk("dns ip: %d", ntohl(dns_ip));
+    }
+
+	void *data     = (void *)(long)ctx->data;
+	void *data_end = (void *)(long)ctx->data_end;
+	struct ethhdr *eth = data;
+    struct iphdr  *ip   = (data + sizeof(struct ethhdr));
+    struct udphdr *udp = (data + sizeof(struct ethhdr) + sizeof(struct iphdr));
+
+    // return early if not enough data
+    if (data + sizeof(struct ethhdr) + sizeof(struct iphdr) + sizeof(struct udphdr) > data_end){
+        return XDP_PASS;
+    }
+
+    // skip non IPv4 packages
+    if (eth->h_proto != htons(ETH_P_IP)) {
+       return XDP_PASS;
+    }
+
+    if (ip->protocol != IPPROTO_UDP) {
+       return XDP_PASS;
+    }
+
+    if (ip->daddr != dns_ip) {
+        return XDP_PASS;
+    }
+
+    // skip non dns ports
+    if (udp->dest != GENERAL_DNS_PORT){
+        return XDP_PASS;
+    }
+
+    udp->dest = dns_port;
+	return XDP_PASS;
+}
+char _license[] SEC("license") = "GPL";

client/internal/dns/forwarder/traffic_forwarder.go

@@ -0,0 +1,89 @@
+package forwarder
+
+import (
+	_ "embed"
+	"encoding/binary"
+	"net"
+
+	"github.com/cilium/ebpf/link"
+	"github.com/cilium/ebpf/rlimit"
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	mapKeyDNSIP   uint32 = 0
+	mapKeyDNSPort uint32 = 1
+)
+
+// libbpf-dev, libc6-dev-i386-amd64-cross
+//
+//go:generate go run github.com/cilium/ebpf/cmd/bpf2go -cc clang-14 bpf src/port_fwd.c -- -I /usr/x86_64-linux-gnu/include
+type TrafficForwarder struct {
+	link      link.Link
+	iFaceName string
+}
+
+func NewTrafficForwarder(iFace string) *TrafficForwarder {
+	return &TrafficForwarder{
+		iFaceName: iFace,
+	}
+}
+
+func (tf *TrafficForwarder) Start(ip string, dnsPort int) error {
+	log.Debugf("start DNS port forwarder")
+	// it required for Docker
+	err := rlimit.RemoveMemlock()
+	if err != nil {
+		return err
+	}
+
+	iFace, err := net.InterfaceByName(tf.iFaceName)
+	if err != nil {
+		return err
+	}
+
+	// load pre-compiled programs into the kernel.
+	objs := bpfObjects{}
+	err = loadBpfObjects(&objs, nil)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = objs.Close()
+	}()
+
+	err = objs.XdpIpMap.Put(mapKeyDNSIP, tf.ip2int(ip))
+	if err != nil {
+		return err
+	}
+
+	err = objs.XdpPortMap.Put(mapKeyDNSPort, uint16(dnsPort))
+	if err != nil {
+		return err
+	}
+
+	defer func() {
+		_ = objs.XdpPortMap.Close()
+	}()
+
+	tf.link, err = link.AttachXDP(link.XDPOptions{
+		Program:   objs.XdpDnsPortFwd,
+		Interface: iFace.Index,
+	})
+	return err
+}
+
+func (tf *TrafficForwarder) Free() error {
+	if tf.link == nil {
+		return nil
+	}
+
+	err := tf.link.Close()
+	tf.link = nil
+	return err
+}
+
+func (tf *TrafficForwarder) ip2int(ipString string) uint32 {
+	ip := net.ParseIP(ipString)
+	return binary.BigEndian.Uint32(ip.To4())
+}

client/internal/dns/host.go

@@ -0,0 +1,94 @@
+package dns
+
+import (
+	"fmt"
+	"strings"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+)
+
+type hostManager interface {
+	applyDNSConfig(config hostDNSConfig) error
+	restoreHostDNS() error
+	supportCustomPort() bool
+}
+
+type hostDNSConfig struct {
+	domains    []domainConfig
+	routeAll   bool
+	serverIP   string
+	serverPort int
+}
+
+type domainConfig struct {
+	disabled  bool
+	domain    string
+	matchOnly bool
+}
+
+type mockHostConfigurator struct {
+	applyDNSConfigFunc    func(config hostDNSConfig) error
+	restoreHostDNSFunc    func() error
+	supportCustomPortFunc func() bool
+}
+
+func (m *mockHostConfigurator) applyDNSConfig(config hostDNSConfig) error {
+	if m.applyDNSConfigFunc != nil {
+		return m.applyDNSConfigFunc(config)
+	}
+	return fmt.Errorf("method applyDNSSettings is not implemented")
+}
+
+func (m *mockHostConfigurator) restoreHostDNS() error {
+	if m.restoreHostDNSFunc != nil {
+		return m.restoreHostDNSFunc()
+	}
+	return fmt.Errorf("method restoreHostDNS is not implemented")
+}
+
+func (m *mockHostConfigurator) supportCustomPort() bool {
+	if m.supportCustomPortFunc != nil {
+		return m.supportCustomPortFunc()
+	}
+	return false
+}
+
+func newNoopHostMocker() hostManager {
+	return &mockHostConfigurator{
+		applyDNSConfigFunc:    func(config hostDNSConfig) error { return nil },
+		restoreHostDNSFunc:    func() error { return nil },
+		supportCustomPortFunc: func() bool { return true },
+	}
+}
+
+func dnsConfigToHostDNSConfig(dnsConfig nbdns.Config, ip string, port int) hostDNSConfig {
+	config := hostDNSConfig{
+		routeAll:   false,
+		serverIP:   ip,
+		serverPort: port,
+	}
+	for _, nsConfig := range dnsConfig.NameServerGroups {
+		if len(nsConfig.NameServers) == 0 {
+			continue
+		}
+		if nsConfig.Primary {
+			config.routeAll = true
+		}
+
+		for _, domain := range nsConfig.Domains {
+			config.domains = append(config.domains, domainConfig{
+				domain:    strings.TrimSuffix(domain, "."),
+				matchOnly: true,
+			})
+		}
+	}
+
+	for _, customZone := range dnsConfig.CustomZones {
+		config.domains = append(config.domains, domainConfig{
+			domain:    strings.TrimSuffix(customZone.Domain, "."),
+			matchOnly: false,
+		})
+	}
+
+	return config
+}

client/internal/dns/host_android.go

@@ -0,0 +1,20 @@
+package dns
+
+type androidHostManager struct {
+}
+
+func newHostManager(wgInterface WGIface) (hostManager, error) {
+	return &androidHostManager{}, nil
+}
+
+func (a androidHostManager) applyDNSConfig(config hostDNSConfig) error {
+	return nil
+}
+
+func (a androidHostManager) restoreHostDNS() error {
+	return nil
+}
+
+func (a androidHostManager) supportCustomPort() bool {
+	return false
+}

client/internal/dns/host_darwin.go

@@ -0,0 +1,266 @@
+package dns
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"os/exec"
+	"strconv"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	netbirdDNSStateKeyFormat            = "State:/Network/Service/NetBird-%s/DNS"
+	globalIPv4State                     = "State:/Network/Global/IPv4"
+	primaryServiceSetupKeyFormat        = "Setup:/Network/Service/%s/DNS"
+	keySupplementalMatchDomains         = "SupplementalMatchDomains"
+	keySupplementalMatchDomainsNoSearch = "SupplementalMatchDomainsNoSearch"
+	keyServerAddresses                  = "ServerAddresses"
+	keyServerPort                       = "ServerPort"
+	arraySymbol                         = "* "
+	digitSymbol                         = "# "
+	scutilPath                          = "/usr/sbin/scutil"
+	searchSuffix                        = "Search"
+	matchSuffix                         = "Match"
+)
+
+type systemConfigurator struct {
+	// primaryServiceID primary interface in the system. AKA the interface with the default route
+	primaryServiceID string
+	createdKeys      map[string]struct{}
+}
+
+func newHostManager(_ WGIface) (hostManager, error) {
+	return &systemConfigurator{
+		createdKeys: make(map[string]struct{}),
+	}, nil
+}
+
+func (s *systemConfigurator) supportCustomPort() bool {
+	return true
+}
+
+func (s *systemConfigurator) applyDNSConfig(config hostDNSConfig) error {
+	var err error
+
+	if config.routeAll {
+		err = s.addDNSSetupForAll(config.serverIP, config.serverPort)
+		if err != nil {
+			return err
+		}
+	} else if s.primaryServiceID != "" {
+		err = s.removeKeyFromSystemConfig(getKeyWithInput(primaryServiceSetupKeyFormat, s.primaryServiceID))
+		if err != nil {
+			return err
+		}
+		s.primaryServiceID = ""
+		log.Infof("removed %s:%d as main DNS resolver for this peer", config.serverIP, config.serverPort)
+	}
+
+	var (
+		searchDomains []string
+		matchDomains  []string
+	)
+
+	for _, dConf := range config.domains {
+		if dConf.disabled {
+			continue
+		}
+		if dConf.matchOnly {
+			matchDomains = append(matchDomains, dConf.domain)
+			continue
+		}
+		searchDomains = append(searchDomains, dConf.domain)
+	}
+
+	matchKey := getKeyWithInput(netbirdDNSStateKeyFormat, matchSuffix)
+	if len(matchDomains) != 0 {
+		err = s.addMatchDomains(matchKey, strings.Join(matchDomains, " "), config.serverIP, config.serverPort)
+	} else {
+		log.Infof("removing match domains from the system")
+		err = s.removeKeyFromSystemConfig(matchKey)
+	}
+	if err != nil {
+		return err
+	}
+
+	searchKey := getKeyWithInput(netbirdDNSStateKeyFormat, searchSuffix)
+	if len(searchDomains) != 0 {
+		err = s.addSearchDomains(searchKey, strings.Join(searchDomains, " "), config.serverIP, config.serverPort)
+	} else {
+		log.Infof("removing search domains from the system")
+		err = s.removeKeyFromSystemConfig(searchKey)
+	}
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *systemConfigurator) restoreHostDNS() error {
+	lines := ""
+	for key := range s.createdKeys {
+		lines += buildRemoveKeyOperation(key)
+		keyType := "search"
+		if strings.Contains(key, matchSuffix) {
+			keyType = "match"
+		}
+		log.Infof("removing %s domains from system", keyType)
+	}
+	if s.primaryServiceID != "" {
+		lines += buildRemoveKeyOperation(getKeyWithInput(primaryServiceSetupKeyFormat, s.primaryServiceID))
+		log.Infof("restoring DNS resolver configuration for system")
+	}
+	_, err := runSystemConfigCommand(wrapCommand(lines))
+	if err != nil {
+		log.Errorf("got an error while cleaning the system configuration: %s", err)
+		return err
+	}
+
+	return nil
+}
+
+func (s *systemConfigurator) removeKeyFromSystemConfig(key string) error {
+	line := buildRemoveKeyOperation(key)
+	_, err := runSystemConfigCommand(wrapCommand(line))
+	if err != nil {
+		return err
+	}
+
+	delete(s.createdKeys, key)
+
+	return nil
+}
+
+func (s *systemConfigurator) addSearchDomains(key, domains string, ip string, port int) error {
+	err := s.addDNSState(key, domains, ip, port, true)
+	if err != nil {
+		return err
+	}
+
+	log.Infof("added %d search domains to the state. Domain list: %s", len(strings.Split(domains, " ")), domains)
+
+	s.createdKeys[key] = struct{}{}
+
+	return nil
+}
+
+func (s *systemConfigurator) addMatchDomains(key, domains, dnsServer string, port int) error {
+	err := s.addDNSState(key, domains, dnsServer, port, false)
+	if err != nil {
+		return err
+	}
+
+	log.Infof("added %d match domains to the state. Domain list: %s", len(strings.Split(domains, " ")), domains)
+
+	s.createdKeys[key] = struct{}{}
+
+	return nil
+}
+
+func (s *systemConfigurator) addDNSState(state, domains, dnsServer string, port int, enableSearch bool) error {
+	noSearch := "1"
+	if enableSearch {
+		noSearch = "0"
+	}
+	lines := buildAddCommandLine(keySupplementalMatchDomains, arraySymbol+domains)
+	lines += buildAddCommandLine(keySupplementalMatchDomainsNoSearch, digitSymbol+noSearch)
+	lines += buildAddCommandLine(keyServerAddresses, arraySymbol+dnsServer)
+	lines += buildAddCommandLine(keyServerPort, digitSymbol+strconv.Itoa(port))
+
+	addDomainCommand := buildCreateStateWithOperation(state, lines)
+	stdinCommands := wrapCommand(addDomainCommand)
+
+	_, err := runSystemConfigCommand(stdinCommands)
+	if err != nil {
+		return fmt.Errorf("got error while applying state for domains %s, error: %s", domains, err)
+	}
+	return nil
+}
+
+func (s *systemConfigurator) addDNSSetupForAll(dnsServer string, port int) error {
+	primaryServiceKey := s.getPrimaryService()
+	if primaryServiceKey == "" {
+		return fmt.Errorf("couldn't find the primary service key")
+	}
+
+	err := s.addDNSSetup(getKeyWithInput(primaryServiceSetupKeyFormat, primaryServiceKey), dnsServer, port)
+	if err != nil {
+		return err
+	}
+	log.Infof("configured %s:%d as main DNS resolver for this peer", dnsServer, port)
+	s.primaryServiceID = primaryServiceKey
+	return nil
+}
+
+func (s *systemConfigurator) getPrimaryService() string {
+	line := buildCommandLine("show", globalIPv4State, "")
+	stdinCommands := wrapCommand(line)
+	b, err := runSystemConfigCommand(stdinCommands)
+	if err != nil {
+		log.Error("got error while sending the command: ", err)
+		return ""
+	}
+	scanner := bufio.NewScanner(bytes.NewReader(b))
+	for scanner.Scan() {
+		text := scanner.Text()
+		if strings.Contains(text, "PrimaryService") {
+			return strings.TrimSpace(strings.Split(text, ":")[1])
+		}
+	}
+	return ""
+}
+
+func (s *systemConfigurator) addDNSSetup(setupKey, dnsServer string, port int) error {
+	lines := buildAddCommandLine(keySupplementalMatchDomainsNoSearch, digitSymbol+strconv.Itoa(0))
+	lines += buildAddCommandLine(keyServerAddresses, arraySymbol+dnsServer)
+	lines += buildAddCommandLine(keyServerPort, digitSymbol+strconv.Itoa(port))
+	addDomainCommand := buildCreateStateWithOperation(setupKey, lines)
+	stdinCommands := wrapCommand(addDomainCommand)
+	_, err := runSystemConfigCommand(stdinCommands)
+	if err != nil {
+		return fmt.Errorf("got error while applying dns setup, error: %s", err)
+	}
+	return nil
+}
+
+func getKeyWithInput(format, key string) string {
+	return fmt.Sprintf(format, key)
+}
+
+func buildAddCommandLine(key, value string) string {
+	return buildCommandLine("d.add", key, value)
+}
+
+func buildCommandLine(action, key, value string) string {
+	return fmt.Sprintf("%s %s %s\n", action, key, value)
+}
+
+func wrapCommand(commands string) string {
+	return fmt.Sprintf("open\n%s\nquit\n", commands)
+}
+
+func buildRemoveKeyOperation(key string) string {
+	return fmt.Sprintf("remove %s\n", key)
+}
+
+func buildCreateStateWithOperation(state, commands string) string {
+	return buildWriteStateOperation("set", state, commands)
+}
+
+func buildWriteStateOperation(operation, state, commands string) string {
+	return fmt.Sprintf("d.init\n%s %s\n%s\nset %s\n", operation, state, commands, state)
+}
+
+func runSystemConfigCommand(command string) ([]byte, error) {
+	cmd := exec.Command(scutilPath)
+	cmd.Stdin = strings.NewReader(command)
+	out, err := cmd.Output()
+	if err != nil {
+		return nil, fmt.Errorf("got error while running system configuration command: \"%s\", error: %s", command, err)
+	}
+	return out, nil
+}

client/internal/dns/host_linux.go

@@ -0,0 +1,89 @@
+//go:build !android
+
+package dns
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	defaultResolvConfPath = "/etc/resolv.conf"
+)
+
+const (
+	netbirdManager osManagerType = iota
+	fileManager
+	networkManager
+	systemdManager
+	resolvConfManager
+)
+
+type osManagerType int
+
+func newHostManager(wgInterface WGIface) (hostManager, error) {
+	osManager, err := getOSDNSManagerType()
+	if err != nil {
+		return nil, err
+	}
+
+	log.Debugf("discovered mode is: %d", osManager)
+	switch osManager {
+	case networkManager:
+		return newNetworkManagerDbusConfigurator(wgInterface)
+	case systemdManager:
+		return newSystemdDbusConfigurator(wgInterface)
+	case resolvConfManager:
+		return newResolvConfConfigurator(wgInterface)
+	default:
+		return newFileConfigurator()
+	}
+}
+
+func getOSDNSManagerType() (osManagerType, error) {
+
+	file, err := os.Open(defaultResolvConfPath)
+	if err != nil {
+		return 0, fmt.Errorf("unable to open %s for checking owner, got error: %s", defaultResolvConfPath, err)
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		text := scanner.Text()
+		if len(text) == 0 {
+			continue
+		}
+		if text[0] != '#' {
+			return fileManager, nil
+		}
+		if strings.Contains(text, fileGeneratedResolvConfContentHeader) {
+			return netbirdManager, nil
+		}
+		if strings.Contains(text, "NetworkManager") && isDbusListenerRunning(networkManagerDest, networkManagerDbusObjectNode) && isNetworkManagerSupported() {
+			log.Debugf("is nm running on supported v? %t", isNetworkManagerSupportedVersion())
+			return networkManager, nil
+		}
+		if strings.Contains(text, "systemd-resolved") && isDbusListenerRunning(systemdResolvedDest, systemdDbusObjectNode) {
+			return systemdManager, nil
+		}
+		if strings.Contains(text, "resolvconf") {
+			if isDbusListenerRunning(systemdResolvedDest, systemdDbusObjectNode) {
+				var value string
+				err = getSystemdDbusProperty(systemdDbusResolvConfModeProperty, &value)
+				if err == nil {
+					if value == systemdDbusResolvConfModeForeign {
+						return systemdManager, nil
+					}
+				}
+				log.Errorf("got an error while checking systemd resolv conf mode, error: %s", err)
+			}
+			return resolvConfManager, nil
+		}
+	}
+	return fileManager, nil
+}

client/internal/dns/host_windows.go

@@ -0,0 +1,267 @@
+package dns
+
+import (
+	"fmt"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sys/windows/registry"
+)
+
+const (
+	dnsPolicyConfigMatchPath            = "SYSTEM\\CurrentControlSet\\Services\\Dnscache\\Parameters\\DnsPolicyConfig\\NetBird-Match"
+	dnsPolicyConfigVersionKey           = "Version"
+	dnsPolicyConfigVersionValue         = 2
+	dnsPolicyConfigNameKey              = "Name"
+	dnsPolicyConfigGenericDNSServersKey = "GenericDNSServers"
+	dnsPolicyConfigConfigOptionsKey     = "ConfigOptions"
+	dnsPolicyConfigConfigOptionsValue   = 0x8
+)
+
+const (
+	interfaceConfigPath          = "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters\\Interfaces"
+	interfaceConfigNameServerKey = "NameServer"
+	interfaceConfigSearchListKey = "SearchList"
+	tcpipParametersPath          = "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters"
+)
+
+type registryConfigurator struct {
+	guid                  string
+	routingAll            bool
+	existingSearchDomains []string
+}
+
+func newHostManager(wgInterface WGIface) (hostManager, error) {
+	guid, err := wgInterface.GetInterfaceGUIDString()
+	if err != nil {
+		return nil, err
+	}
+	return &registryConfigurator{
+		guid: guid,
+	}, nil
+}
+
+func (s *registryConfigurator) supportCustomPort() bool {
+	return false
+}
+
+func (r *registryConfigurator) applyDNSConfig(config hostDNSConfig) error {
+	var err error
+	if config.routeAll {
+		err = r.addDNSSetupForAll(config.serverIP)
+		if err != nil {
+			return err
+		}
+	} else if r.routingAll {
+		err = r.deleteInterfaceRegistryKeyProperty(interfaceConfigNameServerKey)
+		if err != nil {
+			return err
+		}
+		r.routingAll = false
+		log.Infof("removed %s as main DNS forwarder for this peer", config.serverIP)
+	}
+
+	var (
+		searchDomains []string
+		matchDomains  []string
+	)
+
+	for _, dConf := range config.domains {
+		if dConf.disabled {
+			continue
+		}
+		if !dConf.matchOnly {
+			searchDomains = append(searchDomains, dConf.domain)
+		}
+		matchDomains = append(matchDomains, "."+dConf.domain)
+	}
+
+	if len(matchDomains) != 0 {
+		err = r.addDNSMatchPolicy(matchDomains, config.serverIP)
+	} else {
+		err = removeRegistryKeyFromDNSPolicyConfig(dnsPolicyConfigMatchPath)
+	}
+	if err != nil {
+		return err
+	}
+
+	err = r.updateSearchDomains(searchDomains)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (r *registryConfigurator) addDNSSetupForAll(ip string) error {
+	err := r.setInterfaceRegistryKeyStringValue(interfaceConfigNameServerKey, ip)
+	if err != nil {
+		return fmt.Errorf("adding dns setup for all failed with error: %s", err)
+	}
+	r.routingAll = true
+	log.Infof("configured %s:53 as main DNS forwarder for this peer", ip)
+	return nil
+}
+
+func (r *registryConfigurator) addDNSMatchPolicy(domains []string, ip string) error {
+	_, err := registry.OpenKey(registry.LOCAL_MACHINE, dnsPolicyConfigMatchPath, registry.QUERY_VALUE)
+	if err == nil {
+		err = registry.DeleteKey(registry.LOCAL_MACHINE, dnsPolicyConfigMatchPath)
+		if err != nil {
+			return fmt.Errorf("unable to remove existing key from registry, key: HKEY_LOCAL_MACHINE\\%s, error: %s", dnsPolicyConfigMatchPath, err)
+		}
+	}
+
+	regKey, _, err := registry.CreateKey(registry.LOCAL_MACHINE, dnsPolicyConfigMatchPath, registry.SET_VALUE)
+	if err != nil {
+		return fmt.Errorf("unable to create registry key, key: HKEY_LOCAL_MACHINE\\%s, error: %s", dnsPolicyConfigMatchPath, err)
+	}
+
+	err = regKey.SetDWordValue(dnsPolicyConfigVersionKey, dnsPolicyConfigVersionValue)
+	if err != nil {
+		return fmt.Errorf("unable to set registry value for %s, error: %s", dnsPolicyConfigVersionKey, err)
+	}
+
+	err = regKey.SetStringsValue(dnsPolicyConfigNameKey, domains)
+	if err != nil {
+		return fmt.Errorf("unable to set registry value for %s, error: %s", dnsPolicyConfigNameKey, err)
+	}
+
+	err = regKey.SetStringValue(dnsPolicyConfigGenericDNSServersKey, ip)
+	if err != nil {
+		return fmt.Errorf("unable to set registry value for %s, error: %s", dnsPolicyConfigGenericDNSServersKey, err)
+	}
+
+	err = regKey.SetDWordValue(dnsPolicyConfigConfigOptionsKey, dnsPolicyConfigConfigOptionsValue)
+	if err != nil {
+		return fmt.Errorf("unable to set registry value for %s, error: %s", dnsPolicyConfigConfigOptionsKey, err)
+	}
+
+	log.Infof("added %d match domains to the state. Domain list: %s", len(domains), domains)
+
+	return nil
+}
+
+func (r *registryConfigurator) restoreHostDNS() error {
+	err := removeRegistryKeyFromDNSPolicyConfig(dnsPolicyConfigMatchPath)
+	if err != nil {
+		log.Error(err)
+	}
+
+	return r.updateSearchDomains([]string{})
+}
+
+func (r *registryConfigurator) updateSearchDomains(domains []string) error {
+	value, err := getLocalMachineRegistryKeyStringValue(tcpipParametersPath, interfaceConfigSearchListKey)
+	if err != nil {
+		return fmt.Errorf("unable to get current search domains failed with error: %s", err)
+	}
+
+	valueList := strings.Split(value, ",")
+	setExisting := false
+	if len(r.existingSearchDomains) == 0 {
+		r.existingSearchDomains = valueList
+		setExisting = true
+	}
+
+	if len(domains) == 0 && setExisting {
+		log.Infof("added %d search domains to the registry. Domain list: %s", len(domains), domains)
+		return nil
+	}
+
+	newList := append(r.existingSearchDomains, domains...)
+
+	err = setLocalMachineRegistryKeyStringValue(tcpipParametersPath, interfaceConfigSearchListKey, strings.Join(newList, ","))
+	if err != nil {
+		return fmt.Errorf("adding search domain failed with error: %s", err)
+	}
+
+	log.Infof("updated the search domains in the registry with %d domains. Domain list: %s", len(domains), domains)
+
+	return nil
+}
+
+func (r *registryConfigurator) setInterfaceRegistryKeyStringValue(key, value string) error {
+	regKey, err := r.getInterfaceRegistryKey()
+	if err != nil {
+		return err
+	}
+	defer regKey.Close()
+
+	err = regKey.SetStringValue(key, value)
+	if err != nil {
+		return fmt.Errorf("applying key %s with value \"%s\" for interface failed with error: %s", key, value, err)
+	}
+
+	return nil
+}
+
+func (r *registryConfigurator) deleteInterfaceRegistryKeyProperty(propertyKey string) error {
+	regKey, err := r.getInterfaceRegistryKey()
+	if err != nil {
+		return err
+	}
+	defer regKey.Close()
+
+	err = regKey.DeleteValue(propertyKey)
+	if err != nil {
+		return fmt.Errorf("deleting registry key %s for interface failed with error: %s", propertyKey, err)
+	}
+
+	return nil
+}
+
+func (r *registryConfigurator) getInterfaceRegistryKey() (registry.Key, error) {
+	var regKey registry.Key
+
+	regKeyPath := interfaceConfigPath + "\\" + r.guid
+
+	regKey, err := registry.OpenKey(registry.LOCAL_MACHINE, regKeyPath, registry.SET_VALUE)
+	if err != nil {
+		return regKey, fmt.Errorf("unable to open the interface registry key, key: HKEY_LOCAL_MACHINE\\%s, error: %s", regKeyPath, err)
+	}
+
+	return regKey, nil
+}
+
+func removeRegistryKeyFromDNSPolicyConfig(regKeyPath string) error {
+	k, err := registry.OpenKey(registry.LOCAL_MACHINE, regKeyPath, registry.QUERY_VALUE)
+	if err == nil {
+		k.Close()
+		err = registry.DeleteKey(registry.LOCAL_MACHINE, regKeyPath)
+		if err != nil {
+			return fmt.Errorf("unable to remove existing key from registry, key: HKEY_LOCAL_MACHINE\\%s, error: %s", regKeyPath, err)
+		}
+	}
+	return nil
+}
+
+func getLocalMachineRegistryKeyStringValue(keyPath, key string) (string, error) {
+	regKey, err := registry.OpenKey(registry.LOCAL_MACHINE, keyPath, registry.QUERY_VALUE)
+	if err != nil {
+		return "", fmt.Errorf("unable to open existing key from registry, key path: HKEY_LOCAL_MACHINE\\%s, error: %s", keyPath, err)
+	}
+	defer regKey.Close()
+
+	val, _, err := regKey.GetStringValue(key)
+	if err != nil {
+		return "", fmt.Errorf("getting %s value for key path HKEY_LOCAL_MACHINE\\%s failed with error: %s", key, keyPath, err)
+	}
+
+	return val, nil
+}
+
+func setLocalMachineRegistryKeyStringValue(keyPath, key, value string) error {
+	regKey, err := registry.OpenKey(registry.LOCAL_MACHINE, keyPath, registry.SET_VALUE)
+	if err != nil {
+		return fmt.Errorf("unable to open existing key from registry, key path: HKEY_LOCAL_MACHINE\\%s, error: %s", keyPath, err)
+	}
+	defer regKey.Close()
+
+	err = regKey.SetStringValue(key, value)
+	if err != nil {
+		return fmt.Errorf("setting %s value %s for key path HKEY_LOCAL_MACHINE\\%s failed with error: %s", key, value, keyPath, err)
+	}
+
+	return nil
+}

client/internal/dns/local.go

@@ -0,0 +1,73 @@
+package dns
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/miekg/dns"
+	log "github.com/sirupsen/logrus"
+
+	nbdns "github.com/netbirdio/netbird/dns"
+)
+
+type registrationMap map[string]struct{}
+
+type localResolver struct {
+	registeredMap registrationMap
+	records       sync.Map
+}
+
+func (d *localResolver) stop() {
+}
+
+// ServeDNS handles a DNS request
+func (d *localResolver) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
+	log.Tracef("received question: %#v", r.Question[0])
+	replyMessage := &dns.Msg{}
+	replyMessage.SetReply(r)
+	replyMessage.RecursionAvailable = true
+	replyMessage.Rcode = dns.RcodeSuccess
+
+	response := d.lookupRecord(r)
+	if response != nil {
+		replyMessage.Answer = append(replyMessage.Answer, response)
+	}
+
+	err := w.WriteMsg(replyMessage)
+	if err != nil {
+		log.Debugf("got an error while writing the local resolver response, error: %v", err)
+	}
+}
+
+func (d *localResolver) lookupRecord(r *dns.Msg) dns.RR {
+	question := r.Question[0]
+	record, found := d.records.Load(buildRecordKey(question.Name, question.Qclass, question.Qtype))
+	if !found {
+		return nil
+	}
+
+	return record.(dns.RR)
+}
+
+func (d *localResolver) registerRecord(record nbdns.SimpleRecord) error {
+	fullRecord, err := dns.NewRR(record.String())
+	if err != nil {
+		return err
+	}
+
+	fullRecord.Header().Rdlength = record.Len()
+
+	header := fullRecord.Header()
+	d.records.Store(buildRecordKey(header.Name, header.Class, header.Rrtype), fullRecord)
+
+	return nil
+}
+
+func (d *localResolver) deleteRecord(recordKey string) {
+	d.records.Delete(dns.Fqdn(recordKey))
+}
+
+func buildRecordKey(name string, class, qType uint16) string {
+	key := fmt.Sprintf("%s_%d_%d", name, class, qType)
+	return key
+}

client/internal/dns/local_test.go

@@ -0,0 +1,86 @@
+package dns
+
+import (
+	"github.com/miekg/dns"
+	nbdns "github.com/netbirdio/netbird/dns"
+	"strings"
+	"testing"
+)
+
+func TestLocalResolver_ServeDNS(t *testing.T) {
+	recordA := nbdns.SimpleRecord{
+		Name:  "peera.netbird.cloud.",
+		Type:  1,
+		Class: nbdns.DefaultClass,
+		TTL:   300,
+		RData: "1.2.3.4",
+	}
+
+	recordCNAME := nbdns.SimpleRecord{
+		Name:  "peerb.netbird.cloud.",
+		Type:  5,
+		Class: nbdns.DefaultClass,
+		TTL:   300,
+		RData: "www.netbird.io",
+	}
+
+	testCases := []struct {
+		name                string
+		inputRecord         nbdns.SimpleRecord
+		inputMSG            *dns.Msg
+		responseShouldBeNil bool
+	}{
+		{
+			name:        "Should Resolve A Record",
+			inputRecord: recordA,
+			inputMSG:    new(dns.Msg).SetQuestion(recordA.Name, dns.TypeA),
+		},
+		{
+			name:        "Should Resolve CNAME Record",
+			inputRecord: recordCNAME,
+			inputMSG:    new(dns.Msg).SetQuestion(recordCNAME.Name, dns.TypeCNAME),
+		},
+		{
+			name:                "Should Not Write When Not Found A Record",
+			inputRecord:         recordA,
+			inputMSG:            new(dns.Msg).SetQuestion("not.found.com", dns.TypeA),
+			responseShouldBeNil: true,
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			resolver := &localResolver{
+				registeredMap: make(registrationMap),
+			}
+			_ = resolver.registerRecord(testCase.inputRecord)
+			var responseMSG *dns.Msg
+			responseWriter := &mockResponseWriter{
+				WriteMsgFunc: func(m *dns.Msg) error {
+					responseMSG = m
+					return nil
+				},
+			}
+
+			resolver.ServeDNS(responseWriter, testCase.inputMSG)
+
+			if responseMSG == nil || len(responseMSG.Answer) == 0 {
+				if testCase.responseShouldBeNil {
+					return
+				}
+				t.Fatalf("should write a response message")
+			}
+
+			answerString := responseMSG.Answer[0].String()
+			if !strings.Contains(answerString, testCase.inputRecord.Name) {
+				t.Fatalf("answer doesn't contain the same domain name: \nWant: %s\nGot:%s", testCase.name, answerString)
+			}
+			if !strings.Contains(answerString, dns.Type(testCase.inputRecord.Type).String()) {
+				t.Fatalf("answer doesn't contain the correct type: \nWant: %s\nGot:%s", dns.Type(testCase.inputRecord.Type).String(), answerString)
+			}
+			if !strings.Contains(answerString, testCase.inputRecord.RData) {
+				t.Fatalf("answer doesn't contain the same address: \nWant: %s\nGot:%s", testCase.inputRecord.RData, answerString)
+			}
+		})
+	}
+}

client/internal/dns/mockServer.go

@@ -0,0 +1,45 @@
+package dns
+
+import (
+	"fmt"
+	nbdns "github.com/netbirdio/netbird/dns"
+)
+
+// MockServer is the mock instance of a dns server
+type MockServer struct {
+	InitializeFunc      func() error
+	StopFunc            func()
+	UpdateDNSServerFunc func(serial uint64, update nbdns.Config) error
+}
+
+// Initialize mock implementation of Initialize from Server interface
+func (m *MockServer) Initialize() error {
+	if m.InitializeFunc != nil {
+		return m.InitializeFunc()
+	}
+	return nil
+}
+
+// Stop mock implementation of Stop from Server interface
+func (m *MockServer) Stop() {
+	if m.StopFunc != nil {
+		m.StopFunc()
+	}
+}
+
+func (m *MockServer) DnsIP() string {
+	return ""
+}
+
+func (m *MockServer) OnUpdatedHostDNSServer(strings []string) {
+	//TODO implement me
+	panic("implement me")
+}
+
+// UpdateDNSServer mock implementation of UpdateDNSServer from Server interface
+func (m *MockServer) UpdateDNSServer(serial uint64, update nbdns.Config) error {
+	if m.UpdateDNSServerFunc != nil {
+		return m.UpdateDNSServerFunc(serial, update)
+	}
+	return fmt.Errorf("method UpdateDNSServer is not implemented")
+}

client/internal/dns/mock_test.go

@@ -0,0 +1,26 @@
+package dns
+
+import (
+	"net"
+
+	"github.com/miekg/dns"
+)
+
+type mockResponseWriter struct {
+	WriteMsgFunc func(m *dns.Msg) error
+}
+
+func (rw *mockResponseWriter) WriteMsg(m *dns.Msg) error {
+	if rw.WriteMsgFunc != nil {
+		return rw.WriteMsgFunc(m)
+	}
+	return nil
+}
+
+func (rw *mockResponseWriter) LocalAddr() net.Addr       { return nil }
+func (rw *mockResponseWriter) RemoteAddr() net.Addr      { return nil }
+func (rw *mockResponseWriter) Write([]byte) (int, error) { return 0, nil }
+func (rw *mockResponseWriter) Close() error              { return nil }
+func (rw *mockResponseWriter) TsigStatus() error         { return nil }
+func (rw *mockResponseWriter) TsigTimersOnly(bool)       {}
+func (rw *mockResponseWriter) Hijack()                   {}

client/internal/dns/network_manager_linux.go

@@ -0,0 +1,307 @@
+//go:build !android
+
+package dns
+
+import (
+	"context"
+	"encoding/binary"
+	"fmt"
+	"net/netip"
+	"regexp"
+	"time"
+
+	"github.com/godbus/dbus/v5"
+	"github.com/hashicorp/go-version"
+	"github.com/miekg/dns"
+	log "github.com/sirupsen/logrus"
+)
+
+const (
+	networkManagerDest                                                              = "org.freedesktop.NetworkManager"
+	networkManagerDbusObjectNode                                                    = "/org/freedesktop/NetworkManager"
+	networkManagerDbusDNSManagerInterface                                           = "org.freedesktop.NetworkManager.DnsManager"
+	networkManagerDbusDNSManagerObjectNode                                          = networkManagerDbusObjectNode + "/DnsManager"
+	networkManagerDbusDNSManagerModeProperty                                        = networkManagerDbusDNSManagerInterface + ".Mode"
+	networkManagerDbusDNSManagerRcManagerProperty                                   = networkManagerDbusDNSManagerInterface + ".RcManager"
+	networkManagerDbusVersionProperty                                               = "org.freedesktop.NetworkManager.Version"
+	networkManagerDbusGetDeviceByIPIfaceMethod                                      = networkManagerDest + ".GetDeviceByIpIface"
+	networkManagerDbusDeviceInterface                                               = "org.freedesktop.NetworkManager.Device"
+	networkManagerDbusDeviceGetAppliedConnectionMethod                              = networkManagerDbusDeviceInterface + ".GetAppliedConnection"
+	networkManagerDbusDeviceReapplyMethod                                           = networkManagerDbusDeviceInterface + ".Reapply"
+	networkManagerDbusDeviceDeleteMethod                                            = networkManagerDbusDeviceInterface + ".Delete"
+	networkManagerDbusDefaultBehaviorFlag              networkManagerConfigBehavior = 0
+	networkManagerDbusIPv4Key                                                       = "ipv4"
+	networkManagerDbusIPv6Key                                                       = "ipv6"
+	networkManagerDbusDNSKey                                                        = "dns"
+	networkManagerDbusDNSSearchKey                                                  = "dns-search"
+	networkManagerDbusDNSPriorityKey                                                = "dns-priority"
+
+	// dns priority doc https://wiki.gnome.org/Projects/NetworkManager/DNS
+	networkManagerDbusPrimaryDNSPriority       int32 = -500
+	networkManagerDbusWithMatchDomainPriority  int32 = 0
+	networkManagerDbusSearchDomainOnlyPriority int32 = 50
+	supportedNetworkManagerVersionConstraint         = ">= 1.16, < 1.28"
+)
+
+type networkManagerDbusConfigurator struct {
+	dbusLinkObject dbus.ObjectPath
+	routingAll     bool
+}
+
+// the types below are based on dbus specification, each field is mapped to a dbus type
+// see https://dbus.freedesktop.org/doc/dbus-specification.html#basic-types for more details on dbus types
+// see https://networkmanager.dev/docs/api/latest/gdbus-org.freedesktop.NetworkManager.Device.html on Network Manager input types
+
+// networkManagerConnSettings maps to a (a{sa{sv}}) dbus output from GetAppliedConnection and input for Reapply methods
+type networkManagerConnSettings map[string]map[string]dbus.Variant
+
+// networkManagerConfigVersion maps to a (t) dbus output from GetAppliedConnection and input for Reapply methods
+type networkManagerConfigVersion uint64
+
+// networkManagerConfigBehavior maps to a (u) dbus input for GetAppliedConnection and Reapply methods
+type networkManagerConfigBehavior uint32
+
+// cleanDeprecatedSettings cleans deprecated settings that still returned by
+// the GetAppliedConnection methods but can't be reApplied
+func (s networkManagerConnSettings) cleanDeprecatedSettings() {
+	for _, key := range []string{"addresses", "routes"} {
+		delete(s[networkManagerDbusIPv4Key], key)
+		delete(s[networkManagerDbusIPv6Key], key)
+	}
+}
+
+func newNetworkManagerDbusConfigurator(wgInterface WGIface) (hostManager, error) {
+	obj, closeConn, err := getDbusObject(networkManagerDest, networkManagerDbusObjectNode)
+	if err != nil {
+		return nil, err
+	}
+	defer closeConn()
+	var s string
+	err = obj.Call(networkManagerDbusGetDeviceByIPIfaceMethod, dbusDefaultFlag, wgInterface.Name()).Store(&s)
+	if err != nil {
+		return nil, err
+	}
+
+	log.Debugf("got network manager dbus Link Object: %s from net interface %s", s, wgInterface.Name())
+
+	return &networkManagerDbusConfigurator{
+		dbusLinkObject: dbus.ObjectPath(s),
+	}, nil
+}
+
+func (n *networkManagerDbusConfigurator) supportCustomPort() bool {
+	return false
+}
+
+func (n *networkManagerDbusConfigurator) applyDNSConfig(config hostDNSConfig) error {
+	connSettings, configVersion, err := n.getAppliedConnectionSettings()
+	if err != nil {
+		return fmt.Errorf("got an error while retrieving the applied connection settings, error: %s", err)
+	}
+
+	connSettings.cleanDeprecatedSettings()
+
+	dnsIP, err := netip.ParseAddr(config.serverIP)
+	if err != nil {
+		return fmt.Errorf("unable to parse ip address, error: %s", err)
+	}
+	convDNSIP := binary.LittleEndian.Uint32(dnsIP.AsSlice())
+	connSettings[networkManagerDbusIPv4Key][networkManagerDbusDNSKey] = dbus.MakeVariant([]uint32{convDNSIP})
+	var (
+		searchDomains []string
+		matchDomains  []string
+	)
+	for _, dConf := range config.domains {
+		if dConf.disabled {
+			continue
+		}
+		if dConf.matchOnly {
+			matchDomains = append(matchDomains, "~."+dns.Fqdn(dConf.domain))
+			continue
+		}
+		searchDomains = append(searchDomains, dns.Fqdn(dConf.domain))
+	}
+
+	newDomainList := append(searchDomains, matchDomains...)
+
+	priority := networkManagerDbusSearchDomainOnlyPriority
+	switch {
+	case config.routeAll:
+		priority = networkManagerDbusPrimaryDNSPriority
+		newDomainList = append(newDomainList, "~.")
+		if !n.routingAll {
+			log.Infof("configured %s:%d as main DNS forwarder for this peer", config.serverIP, config.serverPort)
+		}
+	case len(matchDomains) > 0:
+		priority = networkManagerDbusWithMatchDomainPriority
+	}
+
+	if priority != networkManagerDbusPrimaryDNSPriority && n.routingAll {
+		log.Infof("removing %s:%d as main DNS forwarder for this peer", config.serverIP, config.serverPort)
+		n.routingAll = false
+	}
+
+	connSettings[networkManagerDbusIPv4Key][networkManagerDbusDNSPriorityKey] = dbus.MakeVariant(priority)
+	connSettings[networkManagerDbusIPv4Key][networkManagerDbusDNSSearchKey] = dbus.MakeVariant(newDomainList)
+
+	log.Infof("adding %d search domains and %d match domains. Search list: %s , Match list: %s", len(searchDomains), len(matchDomains), searchDomains, matchDomains)
+	err = n.reApplyConnectionSettings(connSettings, configVersion)
+	if err != nil {
+		return fmt.Errorf("got an error while reapplying the connection with new settings, error: %s", err)
+	}
+	return nil
+}
+
+func (n *networkManagerDbusConfigurator) restoreHostDNS() error {
+	// once the interface is gone network manager cleans all config associated with it
+	return n.deleteConnectionSettings()
+}
+
+func (n *networkManagerDbusConfigurator) getAppliedConnectionSettings() (networkManagerConnSettings, networkManagerConfigVersion, error) {
+	obj, closeConn, err := getDbusObject(networkManagerDest, n.dbusLinkObject)
+	if err != nil {
+		return nil, 0, fmt.Errorf("got error while attempting to retrieve the applied connection settings, err: %s", err)
+	}
+	defer closeConn()
+
+	ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Second)
+	defer cancel()
+
+	var (
+		connSettings  networkManagerConnSettings
+		configVersion networkManagerConfigVersion
+	)
+
+	err = obj.CallWithContext(ctx, networkManagerDbusDeviceGetAppliedConnectionMethod, dbusDefaultFlag,
+		networkManagerDbusDefaultBehaviorFlag).Store(&connSettings, &configVersion)
+	if err != nil {
+		return nil, 0, fmt.Errorf("got error while calling GetAppliedConnection method with context, err: %s", err)
+	}
+
+	return connSettings, configVersion, nil
+}
+
+func (n *networkManagerDbusConfigurator) reApplyConnectionSettings(connSettings networkManagerConnSettings, configVersion networkManagerConfigVersion) error {
+	obj, closeConn, err := getDbusObject(networkManagerDest, n.dbusLinkObject)
+	if err != nil {
+		return fmt.Errorf("got error while attempting to retrieve the applied connection settings, err: %s", err)
+	}
+	defer closeConn()
+
+	ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Second)
+	defer cancel()
+
+	err = obj.CallWithContext(ctx, networkManagerDbusDeviceReapplyMethod, dbusDefaultFlag,
+		connSettings, configVersion, networkManagerDbusDefaultBehaviorFlag).Store()
+	if err != nil {
+		return fmt.Errorf("got error while calling ReApply method with context, err: %s", err)
+	}
+
+	return nil
+}
+
+func (n *networkManagerDbusConfigurator) deleteConnectionSettings() error {
+	obj, closeConn, err := getDbusObject(networkManagerDest, n.dbusLinkObject)
+	if err != nil {
+		return fmt.Errorf("got error while attempting to retrieve the applied connection settings, err: %s", err)
+	}
+	defer closeConn()
+
+	ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Second)
+	defer cancel()
+
+	err = obj.CallWithContext(ctx, networkManagerDbusDeviceDeleteMethod, dbusDefaultFlag).Store()
+	if err != nil {
+		return fmt.Errorf("got error while calling delete method with context, err: %s", err)
+	}
+
+	return nil
+}
+
+func isNetworkManagerSupported() bool {
+	return isNetworkManagerSupportedVersion() && isNetworkManagerSupportedMode()
+}
+
+func isNetworkManagerSupportedMode() bool {
+	var mode string
+	err := getNetworkManagerDNSProperty(networkManagerDbusDNSManagerModeProperty, &mode)
+	if err != nil {
+		log.Error(err)
+		return false
+	}
+	switch mode {
+	case "dnsmasq", "unbound", "systemd-resolved":
+		return true
+	default:
+		var rcManager string
+		err = getNetworkManagerDNSProperty(networkManagerDbusDNSManagerRcManagerProperty, &rcManager)
+		if err != nil {
+			log.Error(err)
+			return false
+		}
+		if rcManager == "unmanaged" {
+			return false
+		}
+	}
+	return true
+}
+
+func getNetworkManagerDNSProperty(property string, store any) error {
+	obj, closeConn, err := getDbusObject(networkManagerDest, networkManagerDbusDNSManagerObjectNode)
+	if err != nil {
+		return fmt.Errorf("got error while attempting to retrieve the network manager dns manager object, error: %s", err)
+	}
+	defer closeConn()
+
+	v, e := obj.GetProperty(property)
+	if e != nil {
+		return fmt.Errorf("got an error getting property %s: %v", property, e)
+	}
+
+	return v.Store(store)
+}
+
+func isNetworkManagerSupportedVersion() bool {
+	obj, closeConn, err := getDbusObject(networkManagerDest, networkManagerDbusObjectNode)
+	if err != nil {
+		log.Errorf("got error while attempting to get the network manager object, err: %s", err)
+		return false
+	}
+
+	defer closeConn()
+
+	value, err := obj.GetProperty(networkManagerDbusVersionProperty)
+	if err != nil {
+		log.Errorf("unable to retrieve network manager mode, got error: %s", err)
+		return false
+	}
+	versionValue, err := parseVersion(value.Value().(string))
+	if err != nil {
+		return false
+	}
+
+	constraints, err := version.NewConstraint(supportedNetworkManagerVersionConstraint)
+	if err != nil {
+		return false
+	}
+
+	return constraints.Check(versionValue)
+}
+
+func parseVersion(inputVersion string) (*version.Version, error) {
+	reg, err := regexp.Compile(version.SemverRegexpRaw)
+	if err != nil {
+		return nil, err
+	}
+
+	if inputVersion == "" || !reg.MatchString(inputVersion) {
+		return nil, fmt.Errorf("couldn't parse the provided version: Not SemVer")
+	}
+
+	verObj, err := version.NewVersion(inputVersion)
+	if err != nil {
+		return nil, err
+	}
+
+	return verObj, nil
+}

client/internal/dns/resolvconf_linux.go

@@ -0,0 +1,90 @@
+//go:build !android
+
+package dns
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
+)
+
+const resolvconfCommand = "resolvconf"
+
+type resolvconf struct {
+	ifaceName string
+}
+
+func newResolvConfConfigurator(wgInterface WGIface) (hostManager, error) {
+	return &resolvconf{
+		ifaceName: wgInterface.Name(),
+	}, nil
+}
+
+func (r *resolvconf) supportCustomPort() bool {
+	return false
+}
+
+func (r *resolvconf) applyDNSConfig(config hostDNSConfig) error {
+	var err error
+	if !config.routeAll {
+		err = r.restoreHostDNS()
+		if err != nil {
+			log.Error(err)
+		}
+		return fmt.Errorf("unable to configure DNS for this peer using resolvconf manager without a nameserver group with all domains configured")
+	}
+
+	var searchDomains string
+	appendedDomains := 0
+	for _, dConf := range config.domains {
+		if dConf.matchOnly || dConf.disabled {
+			continue
+		}
+
+		if appendedDomains >= fileMaxNumberOfSearchDomains {
+			// lets log all skipped domains
+			log.Infof("already appended %d domains to search list. Skipping append of %s domain", fileMaxNumberOfSearchDomains, dConf.domain)
+			continue
+		}
+
+		if fileSearchLineBeginCharCount+len(searchDomains) > fileMaxLineCharsLimit {
+			// lets log all skipped domains
+			log.Infof("search list line is larger than %d characters. Skipping append of %s domain", fileMaxLineCharsLimit, dConf.domain)
+			continue
+		}
+
+		searchDomains += " " + dConf.domain
+		appendedDomains++
+	}
+
+	content := fmt.Sprintf(fileGeneratedResolvConfContentFormat, fileDefaultResolvConfBackupLocation, config.serverIP, searchDomains)
+
+	err = r.applyConfig(content)
+	if err != nil {
+		return err
+	}
+
+	log.Infof("added %d search domains. Search list: %s", appendedDomains, searchDomains)
+	return nil
+}
+
+func (r *resolvconf) restoreHostDNS() error {
+	cmd := exec.Command(resolvconfCommand, "-f", "-d", r.ifaceName)
+	_, err := cmd.Output()
+	if err != nil {
+		return fmt.Errorf("got an error while removing resolvconf configuration for %s interface, error: %s", r.ifaceName, err)
+	}
+	return nil
+}
+
+func (r *resolvconf) applyConfig(content string) error {
+	cmd := exec.Command(resolvconfCommand, "-x", "-a", r.ifaceName)
+	cmd.Stdin = strings.NewReader(content)
+	_, err := cmd.Output()
+	if err != nil {
+		return fmt.Errorf("got an error while appying resolvconf configuration for %s interface, error: %s", r.ifaceName, err)
+	}
+	return nil
+}

client/internal/dns/response_writer.go

@@ -0,0 +1,103 @@
+package dns
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/miekg/dns"
+	"golang.zx2c4.com/wireguard/tun"
+)
+
+type responseWriter struct {
+	local  net.Addr
+	remote net.Addr
+	packet gopacket.Packet
+	device tun.Device
+}
+
+// LocalAddr returns the net.Addr of the server
+func (r *responseWriter) LocalAddr() net.Addr {
+	return r.local
+}
+
+// RemoteAddr returns the net.Addr of the client that sent the current request.
+func (r *responseWriter) RemoteAddr() net.Addr {
+	return r.remote
+}
+
+// WriteMsg writes a reply back to the client.
+func (r *responseWriter) WriteMsg(msg *dns.Msg) error {
+	buff, err := msg.Pack()
+	if err != nil {
+		return err
+	}
+	_, err = r.Write(buff)
+	return err
+}
+
+// Write writes a raw buffer back to the client.
+func (r *responseWriter) Write(data []byte) (int, error) {
+	var ip gopacket.SerializableLayer
+
+	// Get the UDP layer
+	udpLayer := r.packet.Layer(layers.LayerTypeUDP)
+	udp := udpLayer.(*layers.UDP)
+
+	// Swap the source and destination addresses for the response
+	udp.SrcPort, udp.DstPort = udp.DstPort, udp.SrcPort
+
+	// Check if it's an IPv4 packet
+	if ipv4Layer := r.packet.Layer(layers.LayerTypeIPv4); ipv4Layer != nil {
+		ipv4 := ipv4Layer.(*layers.IPv4)
+		ipv4.SrcIP, ipv4.DstIP = ipv4.DstIP, ipv4.SrcIP
+		ip = ipv4
+	} else if ipv6Layer := r.packet.Layer(layers.LayerTypeIPv6); ipv6Layer != nil {
+		ipv6 := ipv6Layer.(*layers.IPv6)
+		ipv6.SrcIP, ipv6.DstIP = ipv6.DstIP, ipv6.SrcIP
+		ip = ipv6
+	}
+
+	if err := udp.SetNetworkLayerForChecksum(ip.(gopacket.NetworkLayer)); err != nil {
+		return 0, fmt.Errorf("failed to set network layer for checksum: %v", err)
+	}
+
+	// Serialize the packet
+	buffer := gopacket.NewSerializeBuffer()
+	options := gopacket.SerializeOptions{
+		ComputeChecksums: true,
+		FixLengths:       true,
+	}
+
+	payload := gopacket.Payload(data)
+	err := gopacket.SerializeLayers(buffer, options, ip, udp, payload)
+	if err != nil {
+		return 0, fmt.Errorf("failed to serialize packet: %v", err)
+	}
+
+	send := buffer.Bytes()
+	sendBuffer := make([]byte, 40, len(send)+40)
+	sendBuffer = append(sendBuffer, send...)
+
+	return r.device.Write([][]byte{sendBuffer}, 40)
+}
+
+// Close closes the connection.
+func (r *responseWriter) Close() error {
+	return nil
+}
+
+// TsigStatus returns the status of the Tsig.
+func (r *responseWriter) TsigStatus() error {
+	return nil
+}
+
+// TsigTimersOnly sets the tsig timers only boolean.
+func (r *responseWriter) TsigTimersOnly(bool) {
+}
+
+// Hijack lets the caller take over the connection.
+// After a call to Hijack(), the DNS package will not do anything with the connection.
+func (r *responseWriter) Hijack() {
+}

client/internal/dns/response_writer_test.go

@@ -0,0 +1,93 @@
+package dns
+
+import (
+	"net"
+	"testing"
+
+	"github.com/golang/mock/gomock"
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/miekg/dns"
+
+	"github.com/netbirdio/netbird/iface/mocks"
+)
+
+func TestResponseWriterLocalAddr(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	device := mocks.NewMockDevice(ctrl)
+	device.EXPECT().Write(gomock.Any(), gomock.Any())
+
+	request := &dns.Msg{
+		Question: []dns.Question{{
+			Name:   "google.com.",
+			Qtype:  dns.TypeA,
+			Qclass: dns.TypeA,
+		}},
+	}
+
+	replyMessage := &dns.Msg{}
+	replyMessage.SetReply(request)
+	replyMessage.RecursionAvailable = true
+	replyMessage.Rcode = dns.RcodeSuccess
+	replyMessage.Answer = []dns.RR{
+		&dns.A{
+			A: net.IPv4(8, 8, 8, 8),
+		},
+	}
+
+	ipv4 := &layers.IPv4{
+		Protocol: layers.IPProtocolUDP,
+		SrcIP:    net.IPv4(127, 0, 0, 1),
+		DstIP:    net.IPv4(127, 0, 0, 2),
+	}
+	udp := &layers.UDP{
+		DstPort: 53,
+		SrcPort: 45223,
+	}
+	if err := udp.SetNetworkLayerForChecksum(ipv4); err != nil {
+		t.Error("failed to set network layer for checksum")
+		return
+	}
+
+	// Serialize the packet
+	buffer := gopacket.NewSerializeBuffer()
+	options := gopacket.SerializeOptions{
+		ComputeChecksums: true,
+		FixLengths:       true,
+	}
+
+	requestData, err := request.Pack()
+	if err != nil {
+		t.Errorf("got an error while packing the request message, error: %v", err)
+		return
+	}
+	payload := gopacket.Payload(requestData)
+
+	if err := gopacket.SerializeLayers(buffer, options, ipv4, udp, payload); err != nil {
+		t.Errorf("failed to serialize packet: %v", err)
+		return
+	}
+
+	rw := &responseWriter{
+		local: &net.UDPAddr{
+			IP:   net.IPv4(127, 0, 0, 1),
+			Port: 55223,
+		},
+		remote: &net.UDPAddr{
+			IP:   net.IPv4(127, 0, 0, 1),
+			Port: 53,
+		},
+		packet: gopacket.NewPacket(
+			buffer.Bytes(),
+			layers.LayerTypeIPv4,
+			gopacket.Default,
+		),
+		device: device,
+	}
+	if err := rw.WriteMsg(replyMessage); err != nil {
+		t.Errorf("got an error while writing the local resolver response, error: %v", err)
+		return
+	}
+}