Move interface near to engine

This change allows users to reference environment variables using Go template format, like {{ .EnvName }}

Moved the previous file test code to file_suite_test.go.

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+[*.go]
+indent_style = tab

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

@@ -31,9 +31,14 @@ Please specify whether you use NetBird Cloud or self-host NetBird's control plan
 
 `netbird version`
 
-**NetBird status -d output:**
+**NetBird status -dA output:**
 
-If applicable, add the `netbird status -d' command output.
+If applicable, add the `netbird status -dA' command output.
+
+**Do you face any (non-mobile) client issues?**
+
+Please provide the file created by `netbird debug for 1m -AS`.
+We advise reviewing the anonymized files for any remaining PII.
 
 **Screenshots**
 

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

@@ -14,18 +14,18 @@ jobs:
   test:
     strategy:
       matrix:
-        store: ['jsonfile', 'sqlite']
+        store: ['sqlite']
     runs-on: macos-latest
     steps:
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Cache Go modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: macos-go-${{ hashFiles('**/go.sum') }}

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

@@ -0,0 +1,46 @@
+
+name: Test Code FreeBSD
+
+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-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Test in FreeBSD
+        id: test
+        uses: vmactions/freebsd-vm@v1
+        with:
+          usesh: true
+          copyback: false
+          release: "14.1"
+          prepare: |
+            pkg install -y go
+
+          # -x - to print all executed commands
+          # -e - to faile on first error
+          run: |
+            set -e -x
+            time go build -o netbird client/main.go
+            # check all component except management, since we do not support management server on freebsd
+            time go test -timeout 1m -failfast ./base62/...
+            # NOTE: without -p1 `client/internal/dns` will fail becasue of `listen udp4 :33100: bind: address already in use`
+            time go test -timeout 8m -failfast -p 1 ./client/...
+            time go test -timeout 1m -failfast ./dns/...
+            time go test -timeout 1m -failfast ./encryption/...
+            time go test -timeout 1m -failfast ./formatter/...
+            time go test -timeout 1m -failfast ./client/iface/...
+            time go test -timeout 1m -failfast ./route/...
+            time go test -timeout 1m -failfast ./sharedsock/...
+            time go test -timeout 1m -failfast ./signal/...
+            time go test -timeout 1m -failfast ./util/...
+            time go test -timeout 1m -failfast ./version/...

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

@@ -15,17 +15,17 @@ jobs:
     strategy:
       matrix:
         arch: [ '386','amd64' ]
-        store: [ 'jsonfile', 'sqlite' ]
-    runs-on: ubuntu-latest
+        store: [ 'sqlite', 'postgres']
+    runs-on: ubuntu-22.04
     steps:
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
 
 
       - name: Cache Go modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -33,7 +33,7 @@ jobs:
             ${{ runner.os }}-go-
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - 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 libpcap-dev
@@ -49,18 +49,18 @@ jobs:
         run: git --no-pager diff --exit-code
 
       - name: Test
-        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} NETBIRD_STORE_ENGINE=${{ matrix.store }} go test -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 5m -p 1 ./...
+        run: CGO_ENABLED=1 GOARCH=${{ matrix.arch }} NETBIRD_STORE_ENGINE=${{ matrix.store }} go test -exec 'sudo --preserve-env=CI,NETBIRD_STORE_ENGINE' -timeout 6m -p 1 ./...
 
   test_client_on_docker:
     runs-on: ubuntu-20.04
     steps:
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
 
       - name: Cache Go modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -68,7 +68,7 @@ jobs:
             ${{ runner.os }}-go-
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - 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 libpcap-dev
@@ -80,13 +80,16 @@ jobs:
         run: git --no-pager diff --exit-code
 
       - name: Generate Iface Test bin
-        run: CGO_ENABLED=0 go test -c -o iface-testing.bin ./iface/
+        run: CGO_ENABLED=0 go test -c -o iface-testing.bin ./client/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=1 go test -c -o routemanager-testing.bin -tags netgo -ldflags '-w -extldflags "-static -ldbus-1 -lpcap"' ./client/internal/routemanager/...
+        run: CGO_ENABLED=0 go test -c -o routemanager-testing.bin  ./client/internal/routemanager
+
+      - name: Generate SystemOps Test bin
+        run: CGO_ENABLED=1 go test -c -o systemops-testing.bin -tags netgo -ldflags '-w -extldflags "-static -ldbus-1 -lpcap"' ./client/internal/routemanager/systemops
 
       - name: Generate nftables Manager Test bin
         run: CGO_ENABLED=0 go test -c -o nftablesmanager-testing.bin ./client/firewall/nftables/...
@@ -108,6 +111,9 @@ jobs:
       - 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 SystemOps tests in docker
+        run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/client/internal/routemanager/systemops --entrypoint /busybox/sh gcr.io/distroless/base:debug -c /ci/systemops-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
 
@@ -118,4 +124,4 @@ jobs:
         run: docker run -t --cap-add=NET_ADMIN --privileged --rm -v $PWD:/ci -w /ci/client/internal -e NETBIRD_STORE_ENGINE="sqlite" --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
+        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

@@ -17,13 +17,13 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         id: go
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
 
       - name: Download wintun
         uses: carlosperate/download-file-action@v2

.github/workflows/golangci-lint.yml

@@ -15,11 +15,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: codespell
         uses: codespell-project/actions-codespell@v2
         with:
-          ignore_words_list: erro,clienta
+          ignore_words_list: erro,clienta,hastable,iif
           skip: go.mod,go.sum
           only_warn: 1
   golangci:
@@ -32,15 +32,15 @@ jobs:
     timeout-minutes: 15
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check for duplicate constants
         if: matrix.os == 'ubuntu-latest'
         run: |
           ! awk '/const \(/,/)/{print $0}' management/server/activity/codes.go | grep -o '= [0-9]*' | sort | uniq -d | grep .
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
           cache: false
       - name: Install dependencies
         if: matrix.os == 'ubuntu-latest'
@@ -49,4 +49,4 @@ jobs:
         uses: golangci/golangci-lint-action@v3
         with:
           version: latest
-          args: --timeout=12m
+          args: --timeout=12m

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

@@ -13,6 +13,7 @@ concurrency:
 jobs:
   test-install-script:
     strategy:
+      fail-fast: false
       max-parallel: 2
       matrix:
         os: [ubuntu-latest, macos-latest]
@@ -21,7 +22,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: run install script
         env:

.github/workflows/mobile-build-validation.yml

@@ -15,30 +15,30 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
       - name: Setup Android SDK
         uses: android-actions/setup-android@v3
         with:
           cmdline-tools-version: 8512546
       - name: Setup Java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: "11"
           distribution: "adopt"
       - name: NDK Cache
         id: ndk-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: /usr/local/lib/android/sdk/ndk
           key: ndk-cache-23.1.7779620
       - name: Setup NDK
         run: /usr/local/lib/android/sdk/cmdline-tools/7.0/bin/sdkmanager --install "ndk;23.1.7779620"
       - name: install gomobile
-        run: go install golang.org/x/mobile/cmd/gomobile@v0.0.0-20230531173138-3c911d8e3eda
+        run: go install golang.org/x/mobile/cmd/gomobile@v0.0.0-20240404231514-09dbf07665ed
       - name: gomobile init
         run: gomobile init
       - name: build android netbird lib
@@ -50,16 +50,16 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
       - name: install gomobile
-        run: go install golang.org/x/mobile/cmd/gomobile@v0.0.0-20230531173138-3c911d8e3eda
+        run: go install golang.org/x/mobile/cmd/gomobile@v0.0.0-20240404231514-09dbf07665ed
       - name: gomobile init
         run: gomobile init
       - name: build iOS netbird lib
-        run: PATH=$PATH:$(go env GOPATH) gomobile bind -target=ios -bundleid=io.netbird.framework -ldflags="-X github.com/netbirdio/netbird/version.version=buildtest" -o $GITHUB_WORKSPACE/NetBirdSDK.xcframework $GITHUB_WORKSPACE/client/ios/NetBirdSDK
+        run: PATH=$PATH:$(go env GOPATH) gomobile bind -target=ios -bundleid=io.netbird.framework -ldflags="-X github.com/netbirdio/netbird/version.version=buildtest" -o ./NetBirdSDK.xcframework ./client/ios/NetBirdSDK
         env:
-          CGO_ENABLED: 0
+          CGO_ENABLED: 0

.github/workflows/release.yml

@@ -3,25 +3,16 @@ name: Release
 on:
   push:
     tags:
-      - 'v*'
+      - "v*"
     branches:
       - main
   pull_request:
-    paths:
-      - 'go.mod'
-      - 'go.sum'
-      - '.goreleaser.yml'
-      - '.goreleaser_ui.yaml'
-      - '.goreleaser_ui_darwin.yaml'
-      - '.github/workflows/release.yml'
-      - 'release_files/**'
-      - '**/Dockerfile'
-      - '**/Dockerfile.*'
-      - 'client/ui/**'
 
 env:
-  SIGN_PIPE_VER: "v0.0.11"
-  GORELEASER_VER: "v1.14.1"
+  SIGN_PIPE_VER: "v0.0.14"
+  GORELEASER_VER: "v2.3.2"
+  PRODUCT_NAME: "NetBird"
+  COPYRIGHT: "Wiretrustee UG (haftungsbeschreankt)"
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || github.actor_id }}
@@ -29,26 +20,30 @@ concurrency:
 
 jobs:
   release:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     env:
       flags: ""
     steps:
+      - name: Parse semver string
+        id: semver_parser
+        uses: booxmedialtd/ws-action-parse-semver@v1
+        with:
+          input_string: ${{ (startsWith(github.ref, 'refs/tags/v') && github.ref) || 'refs/tags/v0.0.0' }}
+          version_extractor_regex: '\/v(.*)$'
+
       - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         run: echo "flags=--snapshot" >> $GITHUB_ENV
-      -
-        name: Checkout
-        uses: actions/checkout@v3
+      - name: Checkout
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # It is required for GoReleaser to work properly
-      -
-        name: Set up Go
-        uses: actions/setup-go@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21"
+          go-version: "1.23"
           cache: false
-      -
-        name: Cache Go modules
-        uses: actions/cache@v3
+      - name: Cache Go modules
+        uses: actions/cache@v4
         with:
           path: |
             ~/go/pkg/mod
@@ -56,76 +51,88 @@ jobs:
           key: ${{ runner.os }}-go-releaser-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-releaser-
-      -
-        name: Install modules
+      - name: Install modules
         run: go mod tidy
-      -
-        name: check git status
+      - name: check git status
         run: git --no-pager diff --exit-code
-      -
-        name: Set up QEMU
+      - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
-      -
-        name: Set up Docker Buildx
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
-      -
-        name: Login to Docker hub
+      - name: Login to Docker hub
         if: github.event_name != 'pull_request'
         uses: docker/login-action@v1
         with:
-          username: netbirdio
+          username: ${{ secrets.DOCKER_USER }}
           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
+      - name: Install goversioninfo
+        run: go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@233067e
+      - name: Generate windows syso amd64
+        run: goversioninfo  -icon client/ui/netbird.ico -manifest client/manifest.xml -product-name ${{ env.PRODUCT_NAME }} -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/resources_windows_amd64.syso
+      - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v4
         with:
           version: ${{ env.GORELEASER_VER }}
-          args: release --rm-dist ${{ env.flags }}
+          args: release --clean ${{ env.flags }}
         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@v3
+      - name: upload non tags for debug purposes
+        uses: actions/upload-artifact@v4
         with:
           name: release
           path: dist/
           retention-days: 3
+      - name: upload linux packages
+        uses: actions/upload-artifact@v4
+        with:
+          name: linux-packages
+          path: dist/netbird_linux**
+          retention-days: 3
+      - name: upload windows packages
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows-packages
+          path: dist/netbird_windows**
+          retention-days: 3
+      - name: upload macos packages
+        uses: actions/upload-artifact@v4
+        with:
+          name: macos-packages
+          path: dist/netbird_darwin**
+          retention-days: 3
 
   release_ui:
     runs-on: ubuntu-latest
     steps:
+      - name: Parse semver string
+        id: semver_parser
+        uses: booxmedialtd/ws-action-parse-semver@v1
+        with:
+          input_string: ${{ (startsWith(github.ref, 'refs/tags/v') && github.ref) || 'refs/tags/v0.0.0' }}
+          version_extractor_regex: '\/v(.*)$'
+
       - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         run: echo "flags=--snapshot" >> $GITHUB_ENV
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # It is required for GoReleaser to work properly
 
       - name: Set up Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21"
+          go-version: "1.23"
           cache: false
       - name: Cache Go modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
-          path: | 
+          path: |
             ~/go/pkg/mod
             ~/.cache/go-build
           key: ${{ runner.os }}-ui-go-releaser-${{ hashFiles('**/go.sum') }}
@@ -140,46 +147,44 @@ jobs:
 
       - 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: Install goversioninfo
+        run: go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@233067e
+      - name: Generate windows syso amd64
+        run: goversioninfo -64 -icon client/ui/netbird.ico -manifest client/ui/manifest.xml -product-name ${{ env.PRODUCT_NAME }}-"UI" -copyright "${{ env.COPYRIGHT }}" -ver-major ${{ steps.semver_parser.outputs.major }} -ver-minor ${{ steps.semver_parser.outputs.minor }} -ver-patch ${{ steps.semver_parser.outputs.patch }} -ver-build 0 -file-version ${{ steps.semver_parser.outputs.fullversion }}.0 -product-version ${{ steps.semver_parser.outputs.fullversion }}.0 -o client/ui/resources_windows_amd64.syso
+
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v4
         with:
           version: ${{ env.GORELEASER_VER }}
-          args: release --config .goreleaser_ui.yaml --rm-dist ${{ env.flags }}
+          args: release --config .goreleaser_ui.yaml --clean ${{ env.flags }}
         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@v3
+        uses: actions/upload-artifact@v4
         with:
           name: release-ui
           path: dist/
           retention-days: 3
 
   release_ui_darwin:
-    runs-on: macos-11
+    runs-on: macos-latest
     steps:
       - if: ${{ !startsWith(github.ref, 'refs/tags/v') }}
         run: echo "flags=--snapshot" >> $GITHUB_ENV
-      -
-        name: Checkout
-        uses: actions/checkout@v3
+      - name: Checkout
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0 # It is required for GoReleaser to work properly
-      -
-        name: Set up Go
-        uses: actions/setup-go@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21"
+          go-version: "1.23"
           cache: false
-      -
-        name: Cache Go modules
-        uses: actions/cache@v3
+      - name: Cache Go modules
+        uses: actions/cache@v4
         with:
           path: |
             ~/go/pkg/mod
@@ -187,52 +192,34 @@ jobs:
           key: ${{ runner.os }}-ui-go-releaser-darwin-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-ui-go-releaser-darwin-
-      -
-        name: Install modules
+      - name: Install modules
         run: go mod tidy
-      - 
-        name: check git status
+      - name: check git status
         run: git --no-pager diff --exit-code
-      -
-        name: Run GoReleaser
+      - name: Run GoReleaser
         id: goreleaser
         uses: goreleaser/goreleaser-action@v4
         with:
           version: ${{ env.GORELEASER_VER }}
-          args: release --config .goreleaser_ui_darwin.yaml --rm-dist ${{ env.flags }}
+          args: release --config .goreleaser_ui_darwin.yaml --clean ${{ env.flags }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      -
-        name: upload non tags for debug purposes
-        uses: actions/upload-artifact@v3
+      - name: upload non tags for debug purposes
+        uses: actions/upload-artifact@v4
         with:
           name: release-ui-darwin
           path: dist/
           retention-days: 3
 
-  trigger_windows_signer:
+  trigger_signer:
     runs-on: ubuntu-latest
-    needs: [release,release_ui]
+    needs: [release, release_ui, release_ui_darwin]
     if: startsWith(github.ref, 'refs/tags/')
     steps:
-      - name: Trigger Windows binaries sign pipeline
+      - name: Trigger binaries sign pipelines
         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
+          workflow: Sign bin and installer
           repo: netbirdio/sign-pipelines
           ref: ${{ env.SIGN_PIPE_VER }}
           token: ${{ secrets.SIGN_GITHUB_TOKEN }}

.github/workflows/test-infrastructure-files.yml

@@ -18,7 +18,31 @@ concurrency:
 jobs:
   test-docker-compose:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        store: [ 'sqlite', 'postgres' ]
+    services:
+      postgres:
+        image: ${{ (matrix.store == 'postgres') && 'postgres' || '' }}
+        env:
+          POSTGRES_USER: netbird
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: netbird
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+        ports:
+          - 5432:5432
     steps:
+      - name: Set Database Connection String
+        run: |
+          if [ "${{ matrix.store }}" == "postgres" ]; then
+            echo "NETBIRD_STORE_ENGINE_POSTGRES_DSN=host=$(hostname -I | awk '{print $1}') user=netbird password=postgres dbname=netbird port=5432" >> $GITHUB_ENV
+          else
+            echo "NETBIRD_STORE_ENGINE_POSTGRES_DSN==" >> $GITHUB_ENV
+          fi
+
       - name: Install jq
         run: sudo apt-get install -y jq
 
@@ -26,12 +50,12 @@ jobs:
         run: sudo apt-get install -y curl
 
       - name: Install Go
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v5
         with:
-          go-version: "1.21.x"
+          go-version: "1.23.x"
 
       - name: Cache Go modules
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/go/pkg/mod
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -39,7 +63,7 @@ jobs:
             ${{ runner.os }}-go-
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: cp setup.env
         run: cp infrastructure_files/tests/setup.env infrastructure_files/
@@ -58,7 +82,8 @@ jobs:
           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"
-          CI_NETBIRD_STORE_CONFIG_ENGINE: "sqlite"
+          CI_NETBIRD_STORE_CONFIG_ENGINE: ${{ matrix.store }}
+          NETBIRD_STORE_ENGINE_POSTGRES_DSN: ${{ env.NETBIRD_STORE_ENGINE_POSTGRES_DSN }}
           CI_NETBIRD_MGMT_IDP_SIGNKEY_REFRESH: false
 
       - name: check values
@@ -85,7 +110,8 @@ jobs:
           CI_NETBIRD_IDP_MGMT_CLIENT_ID: testing.client.id
           CI_NETBIRD_IDP_MGMT_CLIENT_SECRET: testing.client.secret
           CI_NETBIRD_SIGNAL_PORT: 12345
-          CI_NETBIRD_STORE_CONFIG_ENGINE: "sqlite"
+          CI_NETBIRD_STORE_CONFIG_ENGINE: ${{ matrix.store }}
+          NETBIRD_STORE_ENGINE_POSTGRES_DSN: '${{ env.NETBIRD_STORE_ENGINE_POSTGRES_DSN }}$'
           CI_NETBIRD_MGMT_IDP_SIGNKEY_REFRESH: false
           CI_NETBIRD_TURN_EXTERNAL_IP: "1.2.3.4"
 
@@ -123,6 +149,14 @@ jobs:
           grep -A 10 PKCEAuthorizationFlow management.json | grep -A 10 ProviderConfig | grep Scope | grep "$CI_NETBIRD_AUTH_SUPPORTED_SCOPES"
           grep -A 10 PKCEAuthorizationFlow management.json | grep -A 10 ProviderConfig | grep -A 3 RedirectURLs | grep "http://localhost:53000"
           grep "external-ip" turnserver.conf | grep $CI_NETBIRD_TURN_EXTERNAL_IP
+          grep NETBIRD_STORE_ENGINE_POSTGRES_DSN docker-compose.yml | egrep "$NETBIRD_STORE_ENGINE_POSTGRES_DSN"
+          # check relay values
+          grep "NB_EXPOSED_ADDRESS=$CI_NETBIRD_DOMAIN:33445" docker-compose.yml
+          grep "NB_LISTEN_ADDRESS=:33445" docker-compose.yml
+          grep '33445:33445' docker-compose.yml
+          grep -A 10 'relay:' docker-compose.yml | egrep 'NB_AUTH_SECRET=.+$'
+          grep -A 7 Relay management.json | grep "rel://$CI_NETBIRD_DOMAIN:33445"
+          grep -A 7 Relay management.json | egrep '"Secret": ".+"'
 
       - name: Install modules
         run: go mod tidy
@@ -148,26 +182,35 @@ jobs:
         run: |
           docker build -t netbirdio/signal:latest .
 
+      - name: Build relay binary
+        working-directory: relay
+        run: CGO_ENABLED=0 go build -o netbird-relay main.go
+
+      - name: Build relay docker image
+        working-directory: relay
+        run: |
+          docker build -t netbirdio/relay:latest .
+
       - name: run docker compose up
         working-directory: infrastructure_files/artifacts
         run: |
-          docker-compose up -d
+          docker compose up -d
           sleep 5
-          docker-compose ps
-          docker-compose logs --tail=20
+          docker compose ps
+          docker compose logs --tail=20
 
       - name: test running containers
         run: |
           count=$(docker compose ps --format json | jq '. | select(.Name | contains("artifacts")) | .State' | grep -c running)
-          test $count -eq 4
+          test $count -eq 5 || docker compose logs
         working-directory: infrastructure_files/artifacts
 
       - name: test geolocation databases
         working-directory: infrastructure_files/artifacts
         run: |
           sleep 30
-          docker compose exec management ls -l /var/lib/netbird/ | grep -i GeoLite2-City.mmdb
-          docker compose exec management ls -l /var/lib/netbird/ | grep -i geonames.db
+          docker compose exec management ls -l /var/lib/netbird/ | grep -i GeoLite2-City_[0-9]*.mmdb
+          docker compose exec management ls -l /var/lib/netbird/ | grep -i geonames_[0-9]*.db
 
   test-getting-started-script:
     runs-on: ubuntu-latest
@@ -176,36 +219,69 @@ jobs:
         run: sudo apt-get install -y jq
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
-      - name: run script
+      - name: run script with Zitadel PostgreSQL
         run: NETBIRD_DOMAIN=use-ip bash -x infrastructure_files/getting-started-with-zitadel.sh
 
-      - name: test Caddy file gen
+      - name: test Caddy file gen postgres
         run: test -f Caddyfile
-      - name: test docker-compose file gen
+
+      - name: test docker-compose file gen postgres
         run: test -f docker-compose.yml
-      - name: test management.json file gen
+
+      - name: test management.json file gen postgres
         run: test -f management.json
-      - name: test turnserver.conf file gen
-        run: | 
+
+      - name: test turnserver.conf file gen postgres
+        run: |
           set -x
           test -f turnserver.conf
           grep external-ip turnserver.conf
-      - name: test zitadel.env file gen
+
+      - name: test zitadel.env file gen postgres
         run: test -f zitadel.env
-      - name: test dashboard.env file gen
+
+      - name: test dashboard.env file gen postgres
         run: test -f dashboard.env
-  test-download-geolite2-script:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install jq
-        run: sudo apt-get update && sudo apt-get install -y unzip sqlite3
-      - name: Checkout code
-        uses: actions/checkout@v3
-      - name: test script
-        run: bash -x infrastructure_files/download-geolite2.sh
-      - name: test mmdb file exists
-        run: test -f GeoLite2-City.mmdb
-      - name: test geonames file exists
-        run: test -f geonames.db
+
+      - name: test relay.env file gen postgres
+        run: test -f relay.env
+
+      - name: test zdb.env file gen postgres
+        run: test -f zdb.env
+
+      - name: Postgres run cleanup
+        run: |
+          docker compose down --volumes --rmi all
+          rm -rf docker-compose.yml Caddyfile zitadel.env dashboard.env machinekey/zitadel-admin-sa.token turnserver.conf management.json zdb.env
+
+      - name: run script with Zitadel CockroachDB
+        run: bash -x infrastructure_files/getting-started-with-zitadel.sh
+        env:
+          NETBIRD_DOMAIN: use-ip
+          ZITADEL_DATABASE: cockroach
+
+      - name: test Caddy file gen CockroachDB
+        run: test -f Caddyfile
+
+      - name: test docker-compose file gen CockroachDB
+        run: test -f docker-compose.yml
+
+      - name: test management.json file gen CockroachDB
+        run: test -f management.json
+
+      - name: test turnserver.conf file gen CockroachDB
+        run: |
+          set -x
+          test -f turnserver.conf
+          grep external-ip turnserver.conf
+
+      - name: test zitadel.env file gen CockroachDB
+        run: test -f zitadel.env
+
+      - name: test dashboard.env file gen CockroachDB
+        run: test -f dashboard.env
+
+      - name: test relay.env file gen CockroachDB
+        run: test -f relay.env

.gitignore

@@ -29,4 +29,3 @@ infrastructure_files/setup.env
 infrastructure_files/setup-*.env
 .vscode
 .DS_Store
-GeoLite2-City*

.golangci.yaml

@@ -130,3 +130,10 @@ issues:
     - path: mock\.go
       linters:
       - nilnil
+    # Exclude specific deprecation warnings for grpc methods
+    - linters:
+       - staticcheck
+      text: "grpc.DialContext is deprecated"
+    - linters:
+        - staticcheck
+      text: "grpc.WithBlock is deprecated"

.goreleaser.yaml

@@ -1,3 +1,5 @@
+version: 2
+
 project_name: netbird
 builds:
   - id: netbird
@@ -22,7 +24,7 @@ builds:
         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 }}'
+    mod_timestamp: "{{ .CommitTimestamp }}"
     tags:
       - load_wgnt_from_rsrc
 
@@ -42,19 +44,19 @@ builds:
       - 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 }}'
+    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 }}
+      - 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
@@ -64,7 +66,7 @@ builds:
       - 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 }}'
+    mod_timestamp: "{{ .CommitTimestamp }}"
 
   - id: netbird-signal
     dir: signal
@@ -78,7 +80,21 @@ builds:
       - 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 }}'
+    mod_timestamp: "{{ .CommitTimestamp }}"
+
+  - id: netbird-relay
+    dir: relay
+    env: [CGO_ENABLED=0]
+    binary: netbird-relay
+    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:
@@ -86,7 +102,6 @@ archives:
       - netbird-static
 
 nfpms:
-
   - maintainer: Netbird <dev@netbird.io>
     description: Netbird client.
     homepage: https://netbird.io/
@@ -161,6 +176,52 @@ dockers:
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=maintainer=dev@netbird.io"
+  - image_templates:
+      - netbirdio/relay:{{ .Version }}-amd64
+    ids:
+      - netbird-relay
+    goarch: amd64
+    use: buildx
+    dockerfile: relay/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/relay:{{ .Version }}-arm64v8
+    ids:
+      - netbird-relay
+    goarch: arm64
+    use: buildx
+    dockerfile: relay/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/relay:{{ .Version }}-arm
+    ids:
+      - netbird-relay
+    goarch: arm
+    goarm: 6
+    use: buildx
+    dockerfile: relay/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:
@@ -313,6 +374,18 @@ docker_manifests:
       - netbirdio/netbird:{{ .Version }}-arm
       - netbirdio/netbird:{{ .Version }}-amd64
 
+  - name_template: netbirdio/relay:{{ .Version }}
+    image_templates:
+      - netbirdio/relay:{{ .Version }}-arm64v8
+      - netbirdio/relay:{{ .Version }}-arm
+      - netbirdio/relay:{{ .Version }}-amd64
+
+  - name_template: netbirdio/relay:latest
+    image_templates:
+      - netbirdio/relay:{{ .Version }}-arm64v8
+      - netbirdio/relay:{{ .Version }}-arm
+      - netbirdio/relay:{{ .Version }}-amd64
+
   - name_template: netbirdio/signal:{{ .Version }}
     image_templates:
       - netbirdio/signal:{{ .Version }}-arm64v8
@@ -344,10 +417,9 @@ docker_manifests:
       - netbirdio/management:{{ .Version }}-debug-amd64
 
 brews:
-  -
-    ids:
+  - ids:
       - default
-    tap:
+    repository:
       owner: netbirdio
       name: homebrew-tap
       token: "{{ .Env.HOMEBREW_TAP_GITHUB_TOKEN }}"
@@ -364,7 +436,7 @@ brews:
 uploads:
   - name: debian
     ids:
-    - netbird-deb
+      - 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
@@ -386,4 +458,4 @@ checksum:
 release:
   extra_files:
     - glob: ./infrastructure_files/getting-started-with-zitadel.sh
-    - glob: ./release_files/install.sh
+    - glob: ./release_files/install.sh

.goreleaser_ui.yaml

@@ -1,3 +1,5 @@
+version: 2
+
 project_name: netbird-ui
 builds:
   - id: netbird-ui
@@ -11,9 +13,7 @@ builds:
       - 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 }}'
+    mod_timestamp: "{{ .CommitTimestamp }}"
 
   - id: netbird-ui-windows
     dir: client/ui
@@ -28,7 +28,7 @@ builds:
     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 }}'
+    mod_timestamp: "{{ .CommitTimestamp }}"
 
 archives:
   - id: linux-arch
@@ -41,7 +41,6 @@ archives:
       - netbird-ui-windows
 
 nfpms:
-
   - maintainer: Netbird <dev@netbird.io>
     description: Netbird client UI.
     homepage: https://netbird.io/
@@ -79,7 +78,7 @@ nfpms:
 uploads:
   - name: debian
     ids:
-    - netbird-ui-deb
+      - 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

.goreleaser_ui_darwin.yaml

@@ -1,10 +1,14 @@
+version: 2
+
 project_name: netbird-ui
 builds:
   - id: netbird-ui-darwin
     dir: client/ui
     binary: netbird-ui
-    env: [CGO_ENABLED=1]
-
+    env:
+      - CGO_ENABLED=1
+      - MACOSX_DEPLOYMENT_TARGET=11.0
+      - MACOS_DEPLOYMENT_TARGET=11.0
     goos:
       - darwin
     goarch:
@@ -15,7 +19,7 @@ builds:
       - 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 }}'
+    mod_timestamp: "{{ .CommitTimestamp }}"
     tags:
       - load_wgnt_from_rsrc
 
@@ -26,4 +30,4 @@ archives:
 checksum:
   name_template: "{{ .ProjectName }}_darwin_checksums.txt"
 changelog:
-  skip: true
+  disable: true

CODE_OF_CONDUCT.md

@@ -5,7 +5,7 @@
 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,
+identity and expression, level of experience, education, socioeconomic status,
 nationality, personal appearance, race, caste, color, religion, or sexual
 identity and orientation.
 

CONTRIBUTING.md

@@ -96,7 +96,7 @@ They can be executed from the repository root before every push or PR:
 
 **Goreleaser**
 ```shell
-goreleaser --snapshot --rm-dist
+goreleaser build --snapshot --clean
 ```
 **golangci-lint**
 ```shell

README.md

@@ -10,12 +10,14 @@
   <img width="234" src="docs/media/logo-full.png"/>
 </p>
   <p>
+   <a href="https://img.shields.io/badge/license-BSD--3-blue)">
+       <img src="https://sonarcloud.io/api/project_badges/measure?project=netbirdio_netbird&metric=alert_status" />
+     </a> 
      <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">
+    <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-2p5zwhm4g-8fHollzrQa5y4PZF5AEpvQ">
         <img src="https://img.shields.io/badge/slack-@netbird-red.svg?logo=slack"/>
      </a>    
   </p>
@@ -28,7 +30,7 @@
   <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>
+   Join our <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-2p5zwhm4g-8fHollzrQa5y4PZF5AEpvQ">Slack channel</a>
   <br/>
  
 </strong>
@@ -44,8 +46,11 @@
 
 ### Open-Source Network Security in a Single Platform
 
-![image](https://github.com/netbirdio/netbird/assets/700848/c0d7bae4-3301-499a-bb4e-5e4a225bf35f)
 
+![netbird_2](https://github.com/netbirdio/netbird/assets/700848/46bc3b73-508d-4a0e-bb9a-f465d68646ab)
+
+### NetBird on Lawrence Systems (Video)
+[![Watch the video](https://img.youtube.com/vi/Kwrff6h0rEw/0.jpg)](https://www.youtube.com/watch?v=Kwrff6h0rEw)
 
 ### Key features
 
@@ -59,6 +64,7 @@
 |                                                                                                                              |                                                                                                          | <ul><li> - \[x] [Quantum-resistance with Rosenpass](https://netbird.io/knowledge-hub/the-first-quantum-resistant-mesh-vpn) </ul></li> |                                                                                                                                          | <ul><li> - \[x] OpenWRT </ul></li>                                                      |
 |                                                                                                                              |                                                                                                          | <ui><li> - \[x] [Periodic re-authentication](https://docs.netbird.io/how-to/enforce-periodic-user-authentication)</ul></li>           |                                                                                                                                          | <ul><li> - \[x] [Serverless](https://docs.netbird.io/how-to/netbird-on-faas) </ul></li> |
 |                                                                                                                              |                                                                                                          |                                                                                                                                       |                                                                                                                                          | <ul><li> - \[x] Docker </ul></li>                                                       |
+
 ### Quickstart with NetBird Cloud
 
 - Download and install NetBird at [https://app.netbird.io/install](https://app.netbird.io/install)

client/Dockerfile

@@ -1,5 +1,5 @@
-FROM alpine:3.18.5
+FROM alpine:3.20
 RUN apk add --no-cache ca-certificates iptables ip6tables
 ENV NB_FOREGROUND_MODE=true
-ENTRYPOINT [ "/go/bin/netbird","up"]
-COPY netbird /go/bin/netbird
+ENTRYPOINT [ "/usr/local/bin/netbird","up"]
+COPY netbird /usr/local/bin/netbird

client/android/client.go

@@ -1,3 +1,5 @@
+//go:build android
+
 package android
 
 import (
@@ -6,6 +8,7 @@ import (
 
 	log "github.com/sirupsen/logrus"
 
+	"github.com/netbirdio/netbird/client/iface/device"
 	"github.com/netbirdio/netbird/client/internal"
 	"github.com/netbirdio/netbird/client/internal/dns"
 	"github.com/netbirdio/netbird/client/internal/listener"
@@ -13,7 +16,7 @@ import (
 	"github.com/netbirdio/netbird/client/internal/stdnet"
 	"github.com/netbirdio/netbird/client/system"
 	"github.com/netbirdio/netbird/formatter"
-	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/util/net"
 )
 
 // ConnectionListener export internal Listener for mobile
@@ -23,7 +26,7 @@ type ConnectionListener interface {
 
 // TunAdapter export internal TunAdapter for mobile
 type TunAdapter interface {
-	iface.TunAdapter
+	device.TunAdapter
 }
 
 // IFaceDiscover export internal IFaceDiscover for mobile
@@ -48,20 +51,23 @@ func init() {
 // Client struct manage the life circle of background service
 type Client struct {
 	cfgFile               string
-	tunAdapter            iface.TunAdapter
+	tunAdapter            device.TunAdapter
 	iFaceDiscover         IFaceDiscover
 	recorder              *peer.Status
 	ctxCancel             context.CancelFunc
 	ctxCancelLock         *sync.Mutex
 	deviceName            string
+	uiVersion             string
 	networkChangeListener listener.NetworkChangeListener
 }
 
 // NewClient instantiate a new Client
-func NewClient(cfgFile, deviceName string, tunAdapter TunAdapter, iFaceDiscover IFaceDiscover, networkChangeListener NetworkChangeListener) *Client {
+func NewClient(cfgFile, deviceName string, uiVersion string, tunAdapter TunAdapter, iFaceDiscover IFaceDiscover, networkChangeListener NetworkChangeListener) *Client {
+	net.SetAndroidProtectSocketFn(tunAdapter.ProtectSocket)
 	return &Client{
 		cfgFile:               cfgFile,
 		deviceName:            deviceName,
+		uiVersion:             uiVersion,
 		tunAdapter:            tunAdapter,
 		iFaceDiscover:         iFaceDiscover,
 		recorder:              peer.NewRecorder(""),
@@ -84,6 +90,9 @@ func (c *Client) Run(urlOpener URLOpener, dns *DNSList, dnsReadyListener DnsRead
 	var ctx context.Context
 	//nolint
 	ctxWithValues := context.WithValue(context.Background(), system.DeviceNameCtxKey, c.deviceName)
+	//nolint
+	ctxWithValues = context.WithValue(ctxWithValues, system.UiVersionCtxKey, c.uiVersion)
+
 	c.ctxCancelLock.Lock()
 	ctx, c.ctxCancel = context.WithCancel(ctxWithValues)
 	defer c.ctxCancel()
@@ -97,7 +106,8 @@ func (c *Client) Run(urlOpener URLOpener, dns *DNSList, dnsReadyListener DnsRead
 
 	// todo do not throw error in case of cancelled context
 	ctx = internal.CtxInitState(ctx)
-	return internal.RunClientMobile(ctx, cfg, c.recorder, c.tunAdapter, c.iFaceDiscover, c.networkChangeListener, dns.items, dnsReadyListener)
+	connectClient := internal.NewConnectClient(ctx, cfg, c.recorder)
+	return connectClient.RunOnAndroid(c.tunAdapter, c.iFaceDiscover, c.networkChangeListener, dns.items, dnsReadyListener)
 }
 
 // RunWithoutLogin we apply this type of run function when the backed has been started without UI (i.e. after reboot).
@@ -122,7 +132,8 @@ func (c *Client) RunWithoutLogin(dns *DNSList, dnsReadyListener DnsReadyListener
 
 	// todo do not throw error in case of cancelled context
 	ctx = internal.CtxInitState(ctx)
-	return internal.RunClientMobile(ctx, cfg, c.recorder, c.tunAdapter, c.iFaceDiscover, c.networkChangeListener, dns.items, dnsReadyListener)
+	connectClient := internal.NewConnectClient(ctx, cfg, c.recorder)
+	return connectClient.RunOnAndroid(c.tunAdapter, c.iFaceDiscover, c.networkChangeListener, dns.items, dnsReadyListener)
 }
 
 // Stop the internal client and free the resources

client/android/login.go

@@ -84,7 +84,7 @@ func (a *Auth) SaveConfigIfSSOSupported(listener SSOListener) {
 func (a *Auth) saveConfigIfSSOSupported() (bool, error) {
 	supportsSSO := true
 	err := a.withBackOff(a.ctx, func() (err error) {
-		_, err = internal.GetPKCEAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL)
+		_, err = internal.GetPKCEAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL, nil)
 		if s, ok := gstatus.FromError(err); ok && (s.Code() == codes.NotFound || s.Code() == codes.Unimplemented) {
 			_, err = internal.GetDeviceAuthorizationFlowInfo(a.ctx, a.config.PrivateKey, a.config.ManagementURL)
 			s, ok := gstatus.FromError(err)

client/anonymize/anonymize.go

@@ -0,0 +1,227 @@
+package anonymize
+
+import (
+	"crypto/rand"
+	"fmt"
+	"math/big"
+	"net"
+	"net/netip"
+	"net/url"
+	"regexp"
+	"slices"
+	"strings"
+)
+
+type Anonymizer struct {
+	ipAnonymizer     map[netip.Addr]netip.Addr
+	domainAnonymizer map[string]string
+	currentAnonIPv4  netip.Addr
+	currentAnonIPv6  netip.Addr
+	startAnonIPv4    netip.Addr
+	startAnonIPv6    netip.Addr
+}
+
+func DefaultAddresses() (netip.Addr, netip.Addr) {
+	// 192.51.100.0, 100::
+	return netip.AddrFrom4([4]byte{198, 51, 100, 0}), netip.AddrFrom16([16]byte{0x01})
+}
+
+func NewAnonymizer(startIPv4, startIPv6 netip.Addr) *Anonymizer {
+	return &Anonymizer{
+		ipAnonymizer:     map[netip.Addr]netip.Addr{},
+		domainAnonymizer: map[string]string{},
+		currentAnonIPv4:  startIPv4,
+		currentAnonIPv6:  startIPv6,
+		startAnonIPv4:    startIPv4,
+		startAnonIPv6:    startIPv6,
+	}
+}
+
+func (a *Anonymizer) AnonymizeIP(ip netip.Addr) netip.Addr {
+	if ip.IsLoopback() ||
+		ip.IsLinkLocalUnicast() ||
+		ip.IsLinkLocalMulticast() ||
+		ip.IsInterfaceLocalMulticast() ||
+		ip.IsPrivate() ||
+		ip.IsUnspecified() ||
+		ip.IsMulticast() ||
+		isWellKnown(ip) ||
+		a.isInAnonymizedRange(ip) {
+
+		return ip
+	}
+
+	if _, ok := a.ipAnonymizer[ip]; !ok {
+		if ip.Is4() {
+			a.ipAnonymizer[ip] = a.currentAnonIPv4
+			a.currentAnonIPv4 = a.currentAnonIPv4.Next()
+		} else {
+			a.ipAnonymizer[ip] = a.currentAnonIPv6
+			a.currentAnonIPv6 = a.currentAnonIPv6.Next()
+		}
+	}
+	return a.ipAnonymizer[ip]
+}
+
+// isInAnonymizedRange checks if an IP is within the range of already assigned anonymized IPs
+func (a *Anonymizer) isInAnonymizedRange(ip netip.Addr) bool {
+	if ip.Is4() && ip.Compare(a.startAnonIPv4) >= 0 && ip.Compare(a.currentAnonIPv4) <= 0 {
+		return true
+	} else if !ip.Is4() && ip.Compare(a.startAnonIPv6) >= 0 && ip.Compare(a.currentAnonIPv6) <= 0 {
+		return true
+	}
+	return false
+}
+
+func (a *Anonymizer) AnonymizeIPString(ip string) string {
+	addr, err := netip.ParseAddr(ip)
+	if err != nil {
+		return ip
+	}
+
+	return a.AnonymizeIP(addr).String()
+}
+
+func (a *Anonymizer) AnonymizeDomain(domain string) string {
+	if strings.HasSuffix(domain, "netbird.io") ||
+		strings.HasSuffix(domain, "netbird.selfhosted") ||
+		strings.HasSuffix(domain, "netbird.cloud") ||
+		strings.HasSuffix(domain, "netbird.stage") ||
+		strings.HasSuffix(domain, ".domain") {
+		return domain
+	}
+
+	parts := strings.Split(domain, ".")
+	if len(parts) < 2 {
+		return domain
+	}
+
+	baseDomain := parts[len(parts)-2] + "." + parts[len(parts)-1]
+
+	anonymized, ok := a.domainAnonymizer[baseDomain]
+	if !ok {
+		anonymizedBase := "anon-" + generateRandomString(5) + ".domain"
+		a.domainAnonymizer[baseDomain] = anonymizedBase
+		anonymized = anonymizedBase
+	}
+
+	return strings.Replace(domain, baseDomain, anonymized, 1)
+}
+
+func (a *Anonymizer) AnonymizeURI(uri string) string {
+	u, err := url.Parse(uri)
+	if err != nil {
+		return uri
+	}
+
+	var anonymizedHost string
+	if u.Opaque != "" {
+		host, port, err := net.SplitHostPort(u.Opaque)
+		if err == nil {
+			anonymizedHost = fmt.Sprintf("%s:%s", a.AnonymizeDomain(host), port)
+		} else {
+			anonymizedHost = a.AnonymizeDomain(u.Opaque)
+		}
+		u.Opaque = anonymizedHost
+	} else if u.Host != "" {
+		host, port, err := net.SplitHostPort(u.Host)
+		if err == nil {
+			anonymizedHost = fmt.Sprintf("%s:%s", a.AnonymizeDomain(host), port)
+		} else {
+			anonymizedHost = a.AnonymizeDomain(u.Host)
+		}
+		u.Host = anonymizedHost
+	}
+	return u.String()
+}
+
+func (a *Anonymizer) AnonymizeString(str string) string {
+	ipv4Regex := regexp.MustCompile(`\b(?:[0-9]{1,3}\.){3}[0-9]{1,3}\b`)
+	ipv6Regex := regexp.MustCompile(`\b([0-9a-fA-F:]+:+[0-9a-fA-F]{0,4})(?:%[0-9a-zA-Z]+)?(?:\/[0-9]{1,3})?(?::[0-9]{1,5})?\b`)
+
+	str = ipv4Regex.ReplaceAllStringFunc(str, a.AnonymizeIPString)
+	str = ipv6Regex.ReplaceAllStringFunc(str, a.AnonymizeIPString)
+
+	for domain, anonDomain := range a.domainAnonymizer {
+		str = strings.ReplaceAll(str, domain, anonDomain)
+	}
+
+	str = a.AnonymizeSchemeURI(str)
+	str = a.AnonymizeDNSLogLine(str)
+
+	return str
+}
+
+// AnonymizeSchemeURI finds and anonymizes URIs with stun, stuns, turn, and turns schemes.
+func (a *Anonymizer) AnonymizeSchemeURI(text string) string {
+	re := regexp.MustCompile(`(?i)\b(stuns?:|turns?:|https?://)\S+\b`)
+
+	return re.ReplaceAllStringFunc(text, a.AnonymizeURI)
+}
+
+// AnonymizeDNSLogLine anonymizes domain names in DNS log entries by replacing them with a random string.
+func (a *Anonymizer) AnonymizeDNSLogLine(logEntry string) string {
+	domainPattern := `dns\.Question{Name:"([^"]+)",`
+	domainRegex := regexp.MustCompile(domainPattern)
+
+	return domainRegex.ReplaceAllStringFunc(logEntry, func(match string) string {
+		parts := strings.Split(match, `"`)
+		if len(parts) >= 2 {
+			domain := parts[1]
+			if strings.HasSuffix(domain, ".domain") {
+				return match
+			}
+			randomDomain := generateRandomString(10) + ".domain"
+			return strings.Replace(match, domain, randomDomain, 1)
+		}
+		return match
+	})
+}
+
+// AnonymizeRoute anonymizes a route string by replacing IP addresses with anonymized versions and
+// domain names with random strings.
+func (a *Anonymizer) AnonymizeRoute(route string) string {
+	prefix, err := netip.ParsePrefix(route)
+	if err == nil {
+		ip := a.AnonymizeIPString(prefix.Addr().String())
+		return fmt.Sprintf("%s/%d", ip, prefix.Bits())
+	}
+	domains := strings.Split(route, ", ")
+	for i, domain := range domains {
+		domains[i] = a.AnonymizeDomain(domain)
+	}
+	return strings.Join(domains, ", ")
+}
+
+func isWellKnown(addr netip.Addr) bool {
+	wellKnown := []string{
+		"8.8.8.8", "8.8.4.4", // Google DNS IPv4
+		"2001:4860:4860::8888", "2001:4860:4860::8844", // Google DNS IPv6
+		"1.1.1.1", "1.0.0.1", // Cloudflare DNS IPv4
+		"2606:4700:4700::1111", "2606:4700:4700::1001", // Cloudflare DNS IPv6
+		"9.9.9.9", "149.112.112.112", // Quad9 DNS IPv4
+		"2620:fe::fe", "2620:fe::9", // Quad9 DNS IPv6
+	}
+
+	if slices.Contains(wellKnown, addr.String()) {
+		return true
+	}
+
+	cgnatRangeStart := netip.AddrFrom4([4]byte{100, 64, 0, 0})
+	cgnatRange := netip.PrefixFrom(cgnatRangeStart, 10)
+
+	return cgnatRange.Contains(addr)
+}
+
+func generateRandomString(length int) string {
+	const letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	result := make([]byte, length)
+	for i := range result {
+		num, err := rand.Int(rand.Reader, big.NewInt(int64(len(letters))))
+		if err != nil {
+			continue
+		}
+		result[i] = letters[num.Int64()]
+	}
+	return string(result)
+}

client/anonymize/anonymize_test.go

@@ -0,0 +1,223 @@
+package anonymize_test
+
+import (
+	"net/netip"
+	"regexp"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/netbirdio/netbird/client/anonymize"
+)
+
+func TestAnonymizeIP(t *testing.T) {
+	startIPv4 := netip.MustParseAddr("198.51.100.0")
+	startIPv6 := netip.MustParseAddr("100::")
+	anonymizer := anonymize.NewAnonymizer(startIPv4, startIPv6)
+
+	tests := []struct {
+		name   string
+		ip     string
+		expect string
+	}{
+		{"Well known", "8.8.8.8", "8.8.8.8"},
+		{"First Public IPv4", "1.2.3.4", "198.51.100.0"},
+		{"Second Public IPv4", "4.3.2.1", "198.51.100.1"},
+		{"Repeated IPv4", "1.2.3.4", "198.51.100.0"},
+		{"Private IPv4", "192.168.1.1", "192.168.1.1"},
+		{"First Public IPv6", "2607:f8b0:4005:805::200e", "100::"},
+		{"Second Public IPv6", "a::b", "100::1"},
+		{"Repeated IPv6", "2607:f8b0:4005:805::200e", "100::"},
+		{"Private IPv6", "fe80::1", "fe80::1"},
+		{"In Range IPv4", "198.51.100.2", "198.51.100.2"},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			ip := netip.MustParseAddr(tc.ip)
+			anonymizedIP := anonymizer.AnonymizeIP(ip)
+			if anonymizedIP.String() != tc.expect {
+				t.Errorf("%s: expected %s, got %s", tc.name, tc.expect, anonymizedIP)
+			}
+		})
+	}
+}
+
+func TestAnonymizeDNSLogLine(t *testing.T) {
+	anonymizer := anonymize.NewAnonymizer(netip.Addr{}, netip.Addr{})
+	testLog := `2024-04-23T20:01:11+02:00 TRAC client/internal/dns/local.go:25: received question: dns.Question{Name:"example.com", Qtype:0x1c, Qclass:0x1}`
+
+	result := anonymizer.AnonymizeDNSLogLine(testLog)
+	require.NotEqual(t, testLog, result)
+	assert.NotContains(t, result, "example.com")
+}
+
+func TestAnonymizeDomain(t *testing.T) {
+	anonymizer := anonymize.NewAnonymizer(netip.Addr{}, netip.Addr{})
+	tests := []struct {
+		name            string
+		domain          string
+		expectPattern   string
+		shouldAnonymize bool
+	}{
+		{
+			"General Domain",
+			"example.com",
+			`^anon-[a-zA-Z0-9]+\.domain$`,
+			true,
+		},
+		{
+			"Subdomain",
+			"sub.example.com",
+			`^sub\.anon-[a-zA-Z0-9]+\.domain$`,
+			true,
+		},
+		{
+			"Protected Domain",
+			"netbird.io",
+			`^netbird\.io$`,
+			false,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			result := anonymizer.AnonymizeDomain(tc.domain)
+			if tc.shouldAnonymize {
+				assert.Regexp(t, tc.expectPattern, result, "The anonymized domain should match the expected pattern")
+				assert.NotContains(t, result, tc.domain, "The original domain should not be present in the result")
+			} else {
+				assert.Equal(t, tc.domain, result, "Protected domains should not be anonymized")
+			}
+		})
+	}
+}
+
+func TestAnonymizeURI(t *testing.T) {
+	anonymizer := anonymize.NewAnonymizer(netip.Addr{}, netip.Addr{})
+	tests := []struct {
+		name  string
+		uri   string
+		regex string
+	}{
+		{
+			"HTTP URI with Port",
+			"http://example.com:80/path",
+			`^http://anon-[a-zA-Z0-9]+\.domain:80/path$`,
+		},
+		{
+			"HTTP URI without Port",
+			"http://example.com/path",
+			`^http://anon-[a-zA-Z0-9]+\.domain/path$`,
+		},
+		{
+			"Opaque URI with Port",
+			"stun:example.com:80?transport=udp",
+			`^stun:anon-[a-zA-Z0-9]+\.domain:80\?transport=udp$`,
+		},
+		{
+			"Opaque URI without Port",
+			"stun:example.com?transport=udp",
+			`^stun:anon-[a-zA-Z0-9]+\.domain\?transport=udp$`,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			result := anonymizer.AnonymizeURI(tc.uri)
+			assert.Regexp(t, regexp.MustCompile(tc.regex), result, "URI should match expected pattern")
+			require.NotContains(t, result, "example.com", "Original domain should not be present")
+		})
+	}
+}
+
+func TestAnonymizeSchemeURI(t *testing.T) {
+	anonymizer := anonymize.NewAnonymizer(netip.Addr{}, netip.Addr{})
+	tests := []struct {
+		name   string
+		input  string
+		expect string
+	}{
+		{"STUN URI in text", "Connection made via stun:example.com", `Connection made via stun:anon-[a-zA-Z0-9]+\.domain`},
+		{"TURN URI in log", "Failed attempt turn:some.example.com:3478?transport=tcp: retrying", `Failed attempt turn:some.anon-[a-zA-Z0-9]+\.domain:3478\?transport=tcp: retrying`},
+		{"HTTPS URI in message", "Visit https://example.com for more", `Visit https://anon-[a-zA-Z0-9]+\.domain for more`},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			result := anonymizer.AnonymizeSchemeURI(tc.input)
+			assert.Regexp(t, tc.expect, result, "The anonymized output should match expected pattern")
+			require.NotContains(t, result, "example.com", "Original domain should not be present")
+		})
+	}
+}
+
+func TestAnonymizString_MemorizedDomain(t *testing.T) {
+	anonymizer := anonymize.NewAnonymizer(netip.Addr{}, netip.Addr{})
+	domain := "example.com"
+	anonymizedDomain := anonymizer.AnonymizeDomain(domain)
+
+	sampleString := "This is a test string including the domain example.com which should be anonymized."
+
+	firstPassResult := anonymizer.AnonymizeString(sampleString)
+	secondPassResult := anonymizer.AnonymizeString(firstPassResult)
+
+	assert.Contains(t, firstPassResult, anonymizedDomain, "The domain should be anonymized in the first pass")
+	assert.NotContains(t, firstPassResult, domain, "The original domain should not appear in the first pass output")
+
+	assert.Equal(t, firstPassResult, secondPassResult, "The second pass should not further anonymize the string")
+}
+
+func TestAnonymizeString_DoubleURI(t *testing.T) {
+	anonymizer := anonymize.NewAnonymizer(netip.Addr{}, netip.Addr{})
+	domain := "example.com"
+	anonymizedDomain := anonymizer.AnonymizeDomain(domain)
+
+	sampleString := "Check out our site at https://example.com for more info."
+
+	firstPassResult := anonymizer.AnonymizeString(sampleString)
+	secondPassResult := anonymizer.AnonymizeString(firstPassResult)
+
+	assert.Contains(t, firstPassResult, "https://"+anonymizedDomain, "The URI should be anonymized in the first pass")
+	assert.NotContains(t, firstPassResult, "https://example.com", "The original URI should not appear in the first pass output")
+
+	assert.Equal(t, firstPassResult, secondPassResult, "The second pass should not further anonymize the URI")
+}
+
+func TestAnonymizeString_IPAddresses(t *testing.T) {
+	anonymizer := anonymize.NewAnonymizer(anonymize.DefaultAddresses())
+	tests := []struct {
+		name   string
+		input  string
+		expect string
+	}{
+		{
+			name:   "IPv4 Address",
+			input:  "Error occurred at IP 122.138.1.1",
+			expect: "Error occurred at IP 198.51.100.0",
+		},
+		{
+			name:   "IPv6 Address",
+			input:  "Access attempted from 2001:db8::ff00:42",
+			expect: "Access attempted from 100::",
+		},
+		{
+			name:   "IPv6 Address with Port",
+			input:  "Access attempted from [2001:db8::ff00:42]:8080",
+			expect: "Access attempted from [100::]:8080",
+		},
+		{
+			name:   "Both IPv4 and IPv6",
+			input:  "IPv4: 142.108.0.1 and IPv6: 2001:db8::ff00:43",
+			expect: "IPv4: 198.51.100.1 and IPv6: 100::1",
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			result := anonymizer.AnonymizeString(tc.input)
+			assert.Equal(t, tc.expect, result, "IP addresses should be anonymized correctly")
+		})
+	}
+}

client/cmd/debug.go

@@ -0,0 +1,273 @@
+package cmd
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/proto"
+	"github.com/netbirdio/netbird/client/server"
+)
+
+const errCloseConnection = "Failed to close connection: %v"
+
+var debugCmd = &cobra.Command{
+	Use:   "debug",
+	Short: "Debugging commands",
+	Long:  "Provides commands for debugging and logging control within the Netbird daemon.",
+}
+
+var debugBundleCmd = &cobra.Command{
+	Use:     "bundle",
+	Example: "  netbird debug bundle",
+	Short:   "Create a debug bundle",
+	Long:    "Generates a compressed archive of the daemon's logs and status for debugging purposes.",
+	RunE:    debugBundle,
+}
+
+var logCmd = &cobra.Command{
+	Use:   "log",
+	Short: "Manage logging for the Netbird daemon",
+	Long:  `Commands to manage logging settings for the Netbird daemon, including ICE, gRPC, and general log levels.`,
+}
+
+var logLevelCmd = &cobra.Command{
+	Use:   "level <level>",
+	Short: "Set the logging level for this session",
+	Long: `Sets the logging level for the current session. This setting is temporary and will revert to the default on daemon restart.
+Available log levels are:
+  panic:   for panic level, highest level of severity
+  fatal:   for fatal level errors that cause the program to exit
+  error:   for error conditions
+  warn:    for warning conditions
+  info:    for informational messages
+  debug:   for debug-level messages
+  trace:   for trace-level messages, which include more fine-grained information than debug`,
+	Args: cobra.ExactArgs(1),
+	RunE: setLogLevel,
+}
+
+var forCmd = &cobra.Command{
+	Use:     "for <time>",
+	Short:   "Run debug logs for a specified duration and create a debug bundle",
+	Long:    `Sets the logging level to trace, runs for the specified duration, and then generates a debug bundle.`,
+	Example: "  netbird debug for 5m",
+	Args:    cobra.ExactArgs(1),
+	RunE:    runForDuration,
+}
+
+func debugBundle(cmd *cobra.Command, _ []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Errorf(errCloseConnection, err)
+		}
+	}()
+
+	client := proto.NewDaemonServiceClient(conn)
+	resp, err := client.DebugBundle(cmd.Context(), &proto.DebugBundleRequest{
+		Anonymize:  anonymizeFlag,
+		Status:     getStatusOutput(cmd),
+		SystemInfo: debugSystemInfoFlag,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to bundle debug: %v", status.Convert(err).Message())
+	}
+
+	cmd.Println(resp.GetPath())
+
+	return nil
+}
+
+func setLogLevel(cmd *cobra.Command, args []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Errorf(errCloseConnection, err)
+		}
+	}()
+
+	client := proto.NewDaemonServiceClient(conn)
+	level := server.ParseLogLevel(args[0])
+	if level == proto.LogLevel_UNKNOWN {
+		return fmt.Errorf("unknown log level: %s. Available levels are: panic, fatal, error, warn, info, debug, trace\n", args[0])
+	}
+
+	_, err = client.SetLogLevel(cmd.Context(), &proto.SetLogLevelRequest{
+		Level: level,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to set log level: %v", status.Convert(err).Message())
+	}
+
+	cmd.Println("Log level set successfully to", args[0])
+	return nil
+}
+
+func runForDuration(cmd *cobra.Command, args []string) error {
+	duration, err := time.ParseDuration(args[0])
+	if err != nil {
+		return fmt.Errorf("invalid duration format: %v", err)
+	}
+
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := conn.Close(); err != nil {
+			log.Errorf(errCloseConnection, err)
+		}
+	}()
+
+	client := proto.NewDaemonServiceClient(conn)
+
+	stat, err := client.Status(cmd.Context(), &proto.StatusRequest{})
+	if err != nil {
+		return fmt.Errorf("failed to get status: %v", status.Convert(err).Message())
+	}
+
+	stateWasDown := stat.Status != string(internal.StatusConnected) && stat.Status != string(internal.StatusConnecting)
+
+	initialLogLevel, err := client.GetLogLevel(cmd.Context(), &proto.GetLogLevelRequest{})
+	if err != nil {
+		return fmt.Errorf("failed to get log level: %v", status.Convert(err).Message())
+	}
+
+	if stateWasDown {
+		if _, err := client.Up(cmd.Context(), &proto.UpRequest{}); err != nil {
+			return fmt.Errorf("failed to up: %v", status.Convert(err).Message())
+		}
+		cmd.Println("Netbird up")
+		time.Sleep(time.Second * 10)
+	}
+
+	initialLevelTrace := initialLogLevel.GetLevel() >= proto.LogLevel_TRACE
+	if !initialLevelTrace {
+		_, err = client.SetLogLevel(cmd.Context(), &proto.SetLogLevelRequest{
+			Level: proto.LogLevel_TRACE,
+		})
+		if err != nil {
+			return fmt.Errorf("failed to set log level to TRACE: %v", status.Convert(err).Message())
+		}
+		cmd.Println("Log level set to trace.")
+	}
+
+	if _, err := client.Down(cmd.Context(), &proto.DownRequest{}); err != nil {
+		return fmt.Errorf("failed to down: %v", status.Convert(err).Message())
+	}
+	cmd.Println("Netbird down")
+
+	time.Sleep(1 * time.Second)
+
+	if _, err := client.Up(cmd.Context(), &proto.UpRequest{}); err != nil {
+		return fmt.Errorf("failed to up: %v", status.Convert(err).Message())
+	}
+	cmd.Println("Netbird up")
+
+	time.Sleep(3 * time.Second)
+
+	headerPostUp := fmt.Sprintf("----- Netbird post-up - Timestamp: %s", time.Now().Format(time.RFC3339))
+	statusOutput := fmt.Sprintf("%s\n%s", headerPostUp, getStatusOutput(cmd))
+
+	if waitErr := waitForDurationOrCancel(cmd.Context(), duration, cmd); waitErr != nil {
+		return waitErr
+	}
+	cmd.Println("\nDuration completed")
+
+	cmd.Println("Creating debug bundle...")
+
+	headerPreDown := fmt.Sprintf("----- Netbird pre-down - Timestamp: %s - Duration: %s", time.Now().Format(time.RFC3339), duration)
+	statusOutput = fmt.Sprintf("%s\n%s\n%s", statusOutput, headerPreDown, getStatusOutput(cmd))
+
+	resp, err := client.DebugBundle(cmd.Context(), &proto.DebugBundleRequest{
+		Anonymize:  anonymizeFlag,
+		Status:     statusOutput,
+		SystemInfo: debugSystemInfoFlag,
+	})
+	if err != nil {
+		return fmt.Errorf("failed to bundle debug: %v", status.Convert(err).Message())
+	}
+
+	if stateWasDown {
+		if _, err := client.Down(cmd.Context(), &proto.DownRequest{}); err != nil {
+			return fmt.Errorf("failed to down: %v", status.Convert(err).Message())
+		}
+		cmd.Println("Netbird down")
+	}
+
+	if !initialLevelTrace {
+		if _, err := client.SetLogLevel(cmd.Context(), &proto.SetLogLevelRequest{Level: initialLogLevel.GetLevel()}); err != nil {
+			return fmt.Errorf("failed to restore log level: %v", status.Convert(err).Message())
+		}
+		cmd.Println("Log level restored to", initialLogLevel.GetLevel())
+	}
+
+	cmd.Println(resp.GetPath())
+
+	return nil
+}
+
+func getStatusOutput(cmd *cobra.Command) string {
+	var statusOutputString string
+	statusResp, err := getStatus(cmd.Context())
+	if err != nil {
+		cmd.PrintErrf("Failed to get status: %v\n", err)
+	} else {
+		statusOutputString = parseToFullDetailSummary(convertToStatusOutputOverview(statusResp))
+	}
+	return statusOutputString
+}
+
+func waitForDurationOrCancel(ctx context.Context, duration time.Duration, cmd *cobra.Command) error {
+	ticker := time.NewTicker(1 * time.Second)
+	defer ticker.Stop()
+
+	startTime := time.Now()
+
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		for {
+			select {
+			case <-ctx.Done():
+				return
+			case <-ticker.C:
+				elapsed := time.Since(startTime)
+				if elapsed >= duration {
+					return
+				}
+				remaining := duration - elapsed
+				cmd.Printf("\rRemaining time: %s", formatDuration(remaining))
+			}
+		}
+	}()
+
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	case <-done:
+		return nil
+	}
+}
+
+func formatDuration(d time.Duration) string {
+	d = d.Round(time.Second)
+	h := d / time.Hour
+	d %= time.Hour
+	m := d / time.Minute
+	d %= time.Minute
+	s := d / time.Second
+	return fmt.Sprintf("%02d:%02d:%02d", h, m, s)
+}

client/cmd/down.go

@@ -2,9 +2,10 @@ package cmd
 
 import (
 	"context"
-	"github.com/netbirdio/netbird/util"
 	"time"
 
+	"github.com/netbirdio/netbird/util"
+
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 
@@ -25,7 +26,7 @@ var downCmd = &cobra.Command{
 			return err
 		}
 
-		ctx, cancel := context.WithTimeout(context.Background(), time.Second*3)
+		ctx, cancel := context.WithTimeout(context.Background(), time.Second*7)
 		defer cancel()
 
 		conn, err := DialClientGRPCServer(ctx, daemonAddr)
@@ -41,6 +42,8 @@ var downCmd = &cobra.Command{
 			log.Errorf("call service down method: %v", err)
 			return err
 		}
+
+		cmd.Println("Disconnected")
 		return nil
 	},
 }

client/cmd/login.go

@@ -39,6 +39,11 @@ var loginCmd = &cobra.Command{
 			ctx = context.WithValue(ctx, system.DeviceNameCtxKey, hostName)
 		}
 
+		providedSetupKey, err := getSetupKey()
+		if err != nil {
+			return err
+		}
+
 		// workaround to run without service
 		if logFile == "console" {
 			err = handleRebrand(cmd)
@@ -62,7 +67,7 @@ var loginCmd = &cobra.Command{
 
 			config, _ = internal.UpdateOldManagementURL(ctx, config, configPath)
 
-			err = foregroundLogin(ctx, cmd, config, setupKey)
+			err = foregroundLogin(ctx, cmd, config, providedSetupKey)
 			if err != nil {
 				return fmt.Errorf("foreground login failed: %v", err)
 			}
@@ -81,7 +86,7 @@ var loginCmd = &cobra.Command{
 		client := proto.NewDaemonServiceClient(conn)
 
 		loginRequest := proto.LoginRequest{
-			SetupKey:             setupKey,
+			SetupKey:             providedSetupKey,
 			ManagementUrl:        managementURL,
 			IsLinuxDesktopClient: isLinuxRunningDesktop(),
 			Hostname:             hostName,

client/cmd/login_test.go

@@ -5,8 +5,8 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/netbirdio/netbird/client/iface"
 	"github.com/netbirdio/netbird/client/internal"
-	"github.com/netbirdio/netbird/iface"
 	"github.com/netbirdio/netbird/util"
 )
 

client/cmd/root.go

@@ -32,9 +32,12 @@ const (
 	preSharedKeyFlag        = "preshared-key"
 	interfaceNameFlag       = "interface-name"
 	wireguardPortFlag       = "wireguard-port"
+	networkMonitorFlag      = "network-monitor"
 	disableAutoConnectFlag  = "disable-auto-connect"
 	serverSSHAllowedFlag    = "allow-server-ssh"
 	extraIFaceBlackListFlag = "extra-iface-blacklist"
+	dnsRouteIntervalFlag    = "dns-router-interval"
+	systemInfoFlag          = "system-info"
 )
 
 var (
@@ -53,6 +56,7 @@ var (
 	managementURL           string
 	adminURL                string
 	setupKey                string
+	setupKeyPath            string
 	hostName                string
 	preSharedKey            string
 	natExternalIPs          []string
@@ -62,10 +66,15 @@ var (
 	serverSSHAllowed        bool
 	interfaceName           string
 	wireguardPort           uint16
+	networkMonitor          bool
 	serviceName             string
 	autoConnectDisabled     bool
 	extraIFaceBlackList     []string
-	rootCmd                 = &cobra.Command{
+	anonymizeFlag           bool
+	debugSystemInfoFlag     bool
+	dnsRouteInterval        time.Duration
+
+	rootCmd = &cobra.Command{
 		Use:          "netbird",
 		Short:        "",
 		Long:         "",
@@ -85,12 +94,15 @@ func init() {
 	oldDefaultConfigPathDir = "/etc/wiretrustee/"
 	oldDefaultLogFileDir = "/var/log/wiretrustee/"
 
-	if runtime.GOOS == "windows" {
+	switch runtime.GOOS {
+	case "windows":
 		defaultConfigPathDir = os.Getenv("PROGRAMDATA") + "\\Netbird\\"
 		defaultLogFileDir = os.Getenv("PROGRAMDATA") + "\\Netbird\\"
 
 		oldDefaultConfigPathDir = os.Getenv("PROGRAMDATA") + "\\Wiretrustee\\"
 		oldDefaultLogFileDir = os.Getenv("PROGRAMDATA") + "\\Wiretrustee\\"
+	case "freebsd":
+		defaultConfigPathDir = "/var/db/netbird/"
 	}
 
 	defaultConfigPath = defaultConfigPathDir + "config.json"
@@ -115,10 +127,14 @@ func init() {
 	rootCmd.PersistentFlags().StringVarP(&serviceName, "service", "s", defaultServiceName, "Netbird system service name")
 	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 log will be output to stdout")
+	rootCmd.PersistentFlags().StringVar(&logFile, "log-file", defaultLogFile, "sets Netbird log path. If console is specified the log will be output to stdout. If syslog is specified the log will be sent to syslog daemon.")
 	rootCmd.PersistentFlags().StringVarP(&setupKey, "setup-key", "k", "", "Setup key obtained from the Management Service Dashboard (used to register peer)")
+	rootCmd.PersistentFlags().StringVar(&setupKeyPath, "setup-key-file", "", "The path to a setup key obtained from the Management Service Dashboard (used to register peer) This is ignored if the setup-key flag is provided.")
+	rootCmd.MarkFlagsMutuallyExclusive("setup-key", "setup-key-file")
 	rootCmd.PersistentFlags().StringVar(&preSharedKey, preSharedKeyFlag, "", "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.PersistentFlags().BoolVarP(&anonymizeFlag, "anonymize", "A", false, "anonymize IP addresses and non-netbird.io domains in logs and status output")
+
 	rootCmd.AddCommand(serviceCmd)
 	rootCmd.AddCommand(upCmd)
 	rootCmd.AddCommand(downCmd)
@@ -126,8 +142,20 @@ func init() {
 	rootCmd.AddCommand(loginCmd)
 	rootCmd.AddCommand(versionCmd)
 	rootCmd.AddCommand(sshCmd)
+	rootCmd.AddCommand(routesCmd)
+	rootCmd.AddCommand(debugCmd)
+
 	serviceCmd.AddCommand(runCmd, startCmd, stopCmd, restartCmd) // service control commands are subcommands of service
 	serviceCmd.AddCommand(installCmd, uninstallCmd)              // service installer commands are subcommands of service
+
+	routesCmd.AddCommand(routesListCmd)
+	routesCmd.AddCommand(routesSelectCmd, routesDeselectCmd)
+
+	debugCmd.AddCommand(debugBundleCmd)
+	debugCmd.AddCommand(logCmd)
+	logCmd.AddCommand(logLevelCmd)
+	debugCmd.AddCommand(forCmd)
+
 	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. `+
@@ -145,6 +173,8 @@ func init() {
 	upCmd.PersistentFlags().BoolVar(&rosenpassPermissive, rosenpassPermissiveFlag, false, "[Experimental] Enable Rosenpass in permissive mode to allow this peer to accept WireGuard connections without requiring Rosenpass functionality from peers that do not have Rosenpass enabled.")
 	upCmd.PersistentFlags().BoolVar(&serverSSHAllowed, serverSSHAllowedFlag, false, "Allow SSH server on peer. If enabled, the SSH server will be permitted")
 	upCmd.PersistentFlags().BoolVar(&autoConnectDisabled, disableAutoConnectFlag, false, "Disables auto-connect feature. If enabled, then the client won't connect automatically when the service starts.")
+
+	debugCmd.PersistentFlags().BoolVarP(&debugSystemInfoFlag, systemInfoFlag, "S", false, "Adds system information to the debug bundle")
 }
 
 // SetupCloseHandler handles SIGTERM signal and exits with success
@@ -226,6 +256,21 @@ var CLIBackOffSettings = &backoff.ExponentialBackOff{
 	Clock:               backoff.SystemClock,
 }
 
+func getSetupKey() (string, error) {
+	if setupKeyPath != "" && setupKey == "" {
+		return getSetupKeyFromFile(setupKeyPath)
+	}
+	return setupKey, nil
+}
+
+func getSetupKeyFromFile(setupKeyPath string) (string, error) {
+	data, err := os.ReadFile(setupKeyPath)
+	if err != nil {
+		return "", fmt.Errorf("failed to read setup key file: %v", err)
+	}
+	return strings.TrimSpace(string(data)), nil
+}
+
 func handleRebrand(cmd *cobra.Command) error {
 	var err error
 	if logFile == defaultLogFile {
@@ -335,3 +380,17 @@ func migrateToNetbird(oldPath, newPath string) bool {
 
 	return true
 }
+
+func getClient(cmd *cobra.Command) (*grpc.ClientConn, error) {
+	SetFlagsFromEnvVars(rootCmd)
+	cmd.SetOut(cmd.OutOrStdout())
+
+	conn, err := DialClientGRPCServer(cmd.Context(), 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)
+	}
+
+	return conn, nil
+}

client/cmd/root_test.go

@@ -4,6 +4,10 @@ import (
 	"fmt"
 	"io"
 	"testing"
+
+	"github.com/spf13/cobra"
+
+	"github.com/netbirdio/netbird/client/iface"
 )
 
 func TestInitCommands(t *testing.T) {
@@ -34,3 +38,44 @@ func TestInitCommands(t *testing.T) {
 		})
 	}
 }
+
+func TestSetFlagsFromEnvVars(t *testing.T) {
+	var cmd = &cobra.Command{
+		Use:          "netbird",
+		Long:         "test",
+		SilenceUsage: true,
+		Run: func(cmd *cobra.Command, args []string) {
+			SetFlagsFromEnvVars(cmd)
+		},
+	}
+
+	cmd.PersistentFlags().StringSliceVar(&natExternalIPs, externalIPMapFlag, nil,
+		`comma separated list of external IPs to map to the Wireguard interface`)
+	cmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name")
+	cmd.PersistentFlags().BoolVar(&rosenpassEnabled, enableRosenpassFlag, false, "Enable Rosenpass feature Rosenpass.")
+	cmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "Wireguard interface listening port")
+
+	t.Setenv("NB_EXTERNAL_IP_MAP", "abc,dec")
+	t.Setenv("NB_INTERFACE_NAME", "test-name")
+	t.Setenv("NB_ENABLE_ROSENPASS", "true")
+	t.Setenv("NB_WIREGUARD_PORT", "10000")
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("expected no error while running netbird command, got %v", err)
+	}
+	if len(natExternalIPs) != 2 {
+		t.Errorf("expected 2 external ips, got %d", len(natExternalIPs))
+	}
+	if natExternalIPs[0] != "abc" || natExternalIPs[1] != "dec" {
+		t.Errorf("expected abc,dec, got %s,%s", natExternalIPs[0], natExternalIPs[1])
+	}
+	if interfaceName != "test-name" {
+		t.Errorf("expected test-name, got %s", interfaceName)
+	}
+	if !rosenpassEnabled {
+		t.Errorf("expected rosenpassEnabled to be true, got false")
+	}
+	if wireguardPort != 10000 {
+		t.Errorf("expected wireguardPort to be 10000, got %d", wireguardPort)
+	}
+}

client/cmd/route.go

@@ -0,0 +1,174 @@
+package cmd
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"google.golang.org/grpc/status"
+
+	"github.com/netbirdio/netbird/client/proto"
+)
+
+var appendFlag bool
+
+var routesCmd = &cobra.Command{
+	Use:   "routes",
+	Short: "Manage network routes",
+	Long:  `Commands to list, select, or deselect network routes.`,
+}
+
+var routesListCmd = &cobra.Command{
+	Use:     "list",
+	Aliases: []string{"ls"},
+	Short:   "List routes",
+	Example: "  netbird routes list",
+	Long:    "List all available network routes.",
+	RunE:    routesList,
+}
+
+var routesSelectCmd = &cobra.Command{
+	Use:     "select route...|all",
+	Short:   "Select routes",
+	Long:    "Select a list of routes by identifiers or 'all' to clear all selections and to accept all (including new) routes.\nDefault mode is replace, use -a to append to already selected routes.",
+	Example: "  netbird routes select all\n  netbird routes select route1 route2\n  netbird routes select -a route3",
+	Args:    cobra.MinimumNArgs(1),
+	RunE:    routesSelect,
+}
+
+var routesDeselectCmd = &cobra.Command{
+	Use:     "deselect route...|all",
+	Short:   "Deselect routes",
+	Long:    "Deselect previously selected routes by identifiers or 'all' to disable accepting any routes.",
+	Example: "  netbird routes deselect all\n  netbird routes deselect route1 route2",
+	Args:    cobra.MinimumNArgs(1),
+	RunE:    routesDeselect,
+}
+
+func init() {
+	routesSelectCmd.PersistentFlags().BoolVarP(&appendFlag, "append", "a", false, "Append to current route selection instead of replacing")
+}
+
+func routesList(cmd *cobra.Command, _ []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+	resp, err := client.ListRoutes(cmd.Context(), &proto.ListRoutesRequest{})
+	if err != nil {
+		return fmt.Errorf("failed to list routes: %v", status.Convert(err).Message())
+	}
+
+	if len(resp.Routes) == 0 {
+		cmd.Println("No routes available.")
+		return nil
+	}
+
+	printRoutes(cmd, resp)
+
+	return nil
+}
+
+func printRoutes(cmd *cobra.Command, resp *proto.ListRoutesResponse) {
+	cmd.Println("Available Routes:")
+	for _, route := range resp.Routes {
+		printRoute(cmd, route)
+	}
+}
+
+func printRoute(cmd *cobra.Command, route *proto.Route) {
+	selectedStatus := getSelectedStatus(route)
+	domains := route.GetDomains()
+
+	if len(domains) > 0 {
+		printDomainRoute(cmd, route, domains, selectedStatus)
+	} else {
+		printNetworkRoute(cmd, route, selectedStatus)
+	}
+}
+
+func getSelectedStatus(route *proto.Route) string {
+	if route.GetSelected() {
+		return "Selected"
+	}
+	return "Not Selected"
+}
+
+func printDomainRoute(cmd *cobra.Command, route *proto.Route, domains []string, selectedStatus string) {
+	cmd.Printf("\n  - ID: %s\n    Domains: %s\n    Status: %s\n", route.GetID(), strings.Join(domains, ", "), selectedStatus)
+	resolvedIPs := route.GetResolvedIPs()
+
+	if len(resolvedIPs) > 0 {
+		printResolvedIPs(cmd, domains, resolvedIPs)
+	} else {
+		cmd.Printf("    Resolved IPs: -\n")
+	}
+}
+
+func printNetworkRoute(cmd *cobra.Command, route *proto.Route, selectedStatus string) {
+	cmd.Printf("\n  - ID: %s\n    Network: %s\n    Status: %s\n", route.GetID(), route.GetNetwork(), selectedStatus)
+}
+
+func printResolvedIPs(cmd *cobra.Command, domains []string, resolvedIPs map[string]*proto.IPList) {
+	cmd.Printf("    Resolved IPs:\n")
+	for _, domain := range domains {
+		if ipList, exists := resolvedIPs[domain]; exists {
+			cmd.Printf("      [%s]: %s\n", domain, strings.Join(ipList.GetIps(), ", "))
+		}
+	}
+}
+
+func routesSelect(cmd *cobra.Command, args []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+	req := &proto.SelectRoutesRequest{
+		RouteIDs: args,
+	}
+
+	if len(args) == 1 && args[0] == "all" {
+		req.All = true
+	} else if appendFlag {
+		req.Append = true
+	}
+
+	if _, err := client.SelectRoutes(cmd.Context(), req); err != nil {
+		return fmt.Errorf("failed to select routes: %v", status.Convert(err).Message())
+	}
+
+	cmd.Println("Routes selected successfully.")
+
+	return nil
+}
+
+func routesDeselect(cmd *cobra.Command, args []string) error {
+	conn, err := getClient(cmd)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	client := proto.NewDaemonServiceClient(conn)
+	req := &proto.SelectRoutesRequest{
+		RouteIDs: args,
+	}
+
+	if len(args) == 1 && args[0] == "all" {
+		req.All = true
+	}
+
+	if _, err := client.DeselectRoutes(cmd.Context(), req); err != nil {
+		return fmt.Errorf("failed to deselect routes: %v", status.Convert(err).Message())
+	}
+
+	cmd.Println("Routes deselected successfully.")
+
+	return nil
+}

client/cmd/service.go

@@ -2,18 +2,21 @@ package cmd
 
 import (
 	"context"
+
 	"github.com/kardianos/service"
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"google.golang.org/grpc"
 
 	"github.com/netbirdio/netbird/client/internal"
+	"github.com/netbirdio/netbird/client/server"
 )
 
 type program struct {
-	ctx    context.Context
-	cancel context.CancelFunc
-	serv   *grpc.Server
+	ctx            context.Context
+	cancel         context.CancelFunc
+	serv           *grpc.Server
+	serverInstance *server.Server
 }
 
 func newProgram(ctx context.Context, cancel context.CancelFunc) *program {

client/cmd/service_controller.go

@@ -61,6 +61,8 @@ func (p *program) Start(svc service.Service) error {
 		}
 		proto.RegisterDaemonServiceServer(p.serv, serverInstance)
 
+		p.serverInstance = 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)
@@ -70,6 +72,14 @@ func (p *program) Start(svc service.Service) error {
 }
 
 func (p *program) Stop(srv service.Service) error {
+	if p.serverInstance != nil {
+		in := new(proto.DownRequest)
+		_, err := p.serverInstance.Down(p.ctx, in)
+		if err != nil {
+			log.Errorf("failed to stop daemon: %v", err)
+		}
+	}
+
 	p.cancel()
 
 	if p.serv != nil {

client/cmd/service_installer.go

@@ -31,6 +31,8 @@ var installCmd = &cobra.Command{
 			configPath,
 			"--log-level",
 			logLevel,
+			"--daemon-addr",
+			daemonAddr,
 		}
 
 		if managementURL != "" {

client/cmd/ssh.go

@@ -24,7 +24,7 @@ var (
 )
 
 var sshCmd = &cobra.Command{
-	Use: "ssh",
+	Use: "ssh [user@]host",
 	Args: func(cmd *cobra.Command, args []string) error {
 		if len(args) < 1 {
 			return errors.New("requires a host argument")
@@ -94,7 +94,7 @@ func runSSH(ctx context.Context, addr string, pemKey []byte, cmd *cobra.Command)
 	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" +
+			"\nYou can verify the connection by running:\n\n" +
 			" netbird status\n\n")
 		return err
 	}

client/cmd/status.go

@@ -6,6 +6,8 @@ import (
 	"fmt"
 	"net"
 	"net/netip"
+	"os"
+	"runtime"
 	"sort"
 	"strings"
 	"time"
@@ -14,6 +16,7 @@ import (
 	"google.golang.org/grpc/status"
 	"gopkg.in/yaml.v3"
 
+	"github.com/netbirdio/netbird/client/anonymize"
 	"github.com/netbirdio/netbird/client/internal"
 	"github.com/netbirdio/netbird/client/internal/peer"
 	"github.com/netbirdio/netbird/client/proto"
@@ -28,9 +31,9 @@ type peerStateDetailOutput struct {
 	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"`
 	IceCandidateEndpoint   iceCandidateType `json:"iceCandidateEndpoint" yaml:"iceCandidateEndpoint"`
+	RelayAddress           string           `json:"relayAddress" yaml:"relayAddress"`
 	LastWireguardHandshake time.Time        `json:"lastWireguardHandshake" yaml:"lastWireguardHandshake"`
 	TransferReceived       int64            `json:"transferReceived" yaml:"transferReceived"`
 	TransferSent           int64            `json:"transferSent" yaml:"transferSent"`
@@ -144,9 +147,9 @@ func statusFunc(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("failed initializing log %v", err)
 	}
 
-	ctx := internal.CtxInitState(context.Background())
+	ctx := internal.CtxInitState(cmd.Context())
 
-	resp, err := getStatus(ctx, cmd)
+	resp, err := getStatus(ctx)
 	if err != nil {
 		return err
 	}
@@ -191,7 +194,7 @@ func statusFunc(cmd *cobra.Command, args []string) error {
 	return nil
 }
 
-func getStatus(ctx context.Context, cmd *cobra.Command) (*proto.StatusResponse, error) {
+func getStatus(ctx context.Context) (*proto.StatusResponse, error) {
 	conn, err := DialClientGRPCServer(ctx, daemonAddr)
 	if err != nil {
 		return nil, fmt.Errorf("failed to connect to daemon error: %v\n"+
@@ -200,7 +203,7 @@ func getStatus(ctx context.Context, cmd *cobra.Command) (*proto.StatusResponse,
 	}
 	defer conn.Close()
 
-	resp, err := proto.NewDaemonServiceClient(conn).Status(cmd.Context(), &proto.StatusRequest{GetFullPeerStatus: true})
+	resp, err := proto.NewDaemonServiceClient(conn).Status(ctx, &proto.StatusRequest{GetFullPeerStatus: true})
 	if err != nil {
 		return nil, fmt.Errorf("status failed: %v", status.Convert(err).Message())
 	}
@@ -283,6 +286,11 @@ func convertToStatusOutputOverview(resp *proto.StatusResponse) statusOutputOverv
 		NSServerGroups:      mapNSGroups(pbFullStatus.GetDnsServers()),
 	}
 
+	if anonymizeFlag {
+		anonymizer := anonymize.NewAnonymizer(anonymize.DefaultAddresses())
+		anonymizeOverview(anonymizer, &overview)
+	}
+
 	return overview
 }
 
@@ -327,16 +335,18 @@ func mapNSGroups(servers []*proto.NSGroupState) []nsServerGroupStateOutput {
 
 func mapPeers(peers []*proto.PeerState) peersStateOutput {
 	var peersStateDetail []peerStateDetailOutput
-	localICE := ""
-	remoteICE := ""
-	localICEEndpoint := ""
-	remoteICEEndpoint := ""
-	connType := ""
 	peersConnected := 0
-	lastHandshake := time.Time{}
-	transferReceived := int64(0)
-	transferSent := int64(0)
 	for _, pbPeerState := range peers {
+		localICE := ""
+		remoteICE := ""
+		localICEEndpoint := ""
+		remoteICEEndpoint := ""
+		relayServerAddress := ""
+		connType := ""
+		lastHandshake := time.Time{}
+		transferReceived := int64(0)
+		transferSent := int64(0)
+
 		isPeerConnected := pbPeerState.ConnStatus == peer.StatusConnected.String()
 		if skipDetailByFilters(pbPeerState, isPeerConnected) {
 			continue
@@ -352,6 +362,7 @@ func mapPeers(peers []*proto.PeerState) peersStateOutput {
 			if pbPeerState.Relayed {
 				connType = "Relayed"
 			}
+			relayServerAddress = pbPeerState.GetRelayAddress()
 			lastHandshake = pbPeerState.GetLastWireguardHandshake().AsTime().Local()
 			transferReceived = pbPeerState.GetBytesRx()
 			transferSent = pbPeerState.GetBytesTx()
@@ -364,7 +375,6 @@ func mapPeers(peers []*proto.PeerState) peersStateOutput {
 			Status:           pbPeerState.GetConnStatus(),
 			LastStatusUpdate: timeLocal,
 			ConnType:         connType,
-			Direct:           pbPeerState.GetDirect(),
 			IceCandidateType: iceCandidateType{
 				Local:  localICE,
 				Remote: remoteICE,
@@ -373,6 +383,7 @@ func mapPeers(peers []*proto.PeerState) peersStateOutput {
 				Local:  localICEEndpoint,
 				Remote: remoteICEEndpoint,
 			},
+			RelayAddress:           relayServerAddress,
 			FQDN:                   pbPeerState.GetFqdn(),
 			LastWireguardHandshake: lastHandshake,
 			TransferReceived:       transferReceived,
@@ -525,8 +536,16 @@ func parseGeneralSummary(overview statusOutputOverview, showURL bool, showRelays
 
 	peersCountString := fmt.Sprintf("%d/%d Connected", overview.Peers.Connected, overview.Peers.Total)
 
+	goos := runtime.GOOS
+	goarch := runtime.GOARCH
+	goarm := ""
+	if goarch == "arm" {
+		goarm = fmt.Sprintf(" (ARMv%s)", os.Getenv("GOARM"))
+	}
+
 	summary := fmt.Sprintf(
-		"Daemon version: %s\n"+
+		"OS: %s\n"+
+			"Daemon version: %s\n"+
 			"CLI version: %s\n"+
 			"Management: %s\n"+
 			"Signal: %s\n"+
@@ -538,6 +557,7 @@ func parseGeneralSummary(overview statusOutputOverview, showURL bool, showRelays
 			"Quantum resistance: %s\n"+
 			"Routes: %s\n"+
 			"Peers count: %s\n",
+		fmt.Sprintf("%s/%s%s", goos, goarch, goarm),
 		overview.DaemonVersion,
 		version.NetbirdVersion(),
 		managementConnString,
@@ -593,15 +613,6 @@ func parsePeers(peers peersStateOutput, rosenpassEnabled, rosenpassPermissive bo
 		if peerState.IceCandidateEndpoint.Remote != "" {
 			remoteICEEndpoint = peerState.IceCandidateEndpoint.Remote
 		}
-		lastStatusUpdate := "-"
-		if !peerState.LastStatusUpdate.IsZero() {
-			lastStatusUpdate = peerState.LastStatusUpdate.Format("2006-01-02 15:04:05")
-		}
-
-		lastWireGuardHandshake := "-"
-		if !peerState.LastWireguardHandshake.IsZero() && peerState.LastWireguardHandshake != time.Unix(0, 0) {
-			lastWireGuardHandshake = peerState.LastWireguardHandshake.Format("2006-01-02 15:04:05")
-		}
 
 		rosenpassEnabledStatus := "false"
 		if rosenpassEnabled {
@@ -633,9 +644,9 @@ func parsePeers(peers peersStateOutput, rosenpassEnabled, rosenpassPermissive bo
 				"  Status: %s\n"+
 				"  -- detail --\n"+
 				"  Connection type: %s\n"+
-				"  Direct: %t\n"+
 				"  ICE candidate (Local/Remote): %s/%s\n"+
 				"  ICE candidate endpoints (Local/Remote): %s/%s\n"+
+				"  Relay server address: %s\n"+
 				"  Last connection update: %s\n"+
 				"  Last WireGuard handshake: %s\n"+
 				"  Transfer status (received/sent) %s/%s\n"+
@@ -647,13 +658,13 @@ func parsePeers(peers peersStateOutput, rosenpassEnabled, rosenpassPermissive bo
 			peerState.PubKey,
 			peerState.Status,
 			peerState.ConnType,
-			peerState.Direct,
 			localICE,
 			remoteICE,
 			localICEEndpoint,
 			remoteICEEndpoint,
-			lastStatusUpdate,
-			lastWireGuardHandshake,
+			peerState.RelayAddress,
+			timeAgo(peerState.LastStatusUpdate),
+			timeAgo(peerState.LastWireguardHandshake),
 			toIEC(peerState.TransferReceived),
 			toIEC(peerState.TransferSent),
 			rosenpassEnabledStatus,
@@ -722,3 +733,124 @@ func countEnabled(dnsServers []nsServerGroupStateOutput) int {
 	}
 	return count
 }
+
+// timeAgo returns a string representing the duration since the provided time in a human-readable format.
+func timeAgo(t time.Time) string {
+	if t.IsZero() || t.Equal(time.Unix(0, 0)) {
+		return "-"
+	}
+	duration := time.Since(t)
+	switch {
+	case duration < time.Second:
+		return "Now"
+	case duration < time.Minute:
+		seconds := int(duration.Seconds())
+		if seconds == 1 {
+			return "1 second ago"
+		}
+		return fmt.Sprintf("%d seconds ago", seconds)
+	case duration < time.Hour:
+		minutes := int(duration.Minutes())
+		seconds := int(duration.Seconds()) % 60
+		if minutes == 1 {
+			if seconds == 1 {
+				return "1 minute, 1 second ago"
+			} else if seconds > 0 {
+				return fmt.Sprintf("1 minute, %d seconds ago", seconds)
+			}
+			return "1 minute ago"
+		}
+		if seconds > 0 {
+			return fmt.Sprintf("%d minutes, %d seconds ago", minutes, seconds)
+		}
+		return fmt.Sprintf("%d minutes ago", minutes)
+	case duration < 24*time.Hour:
+		hours := int(duration.Hours())
+		minutes := int(duration.Minutes()) % 60
+		if hours == 1 {
+			if minutes == 1 {
+				return "1 hour, 1 minute ago"
+			} else if minutes > 0 {
+				return fmt.Sprintf("1 hour, %d minutes ago", minutes)
+			}
+			return "1 hour ago"
+		}
+		if minutes > 0 {
+			return fmt.Sprintf("%d hours, %d minutes ago", hours, minutes)
+		}
+		return fmt.Sprintf("%d hours ago", hours)
+	}
+
+	days := int(duration.Hours()) / 24
+	hours := int(duration.Hours()) % 24
+	if days == 1 {
+		if hours == 1 {
+			return "1 day, 1 hour ago"
+		} else if hours > 0 {
+			return fmt.Sprintf("1 day, %d hours ago", hours)
+		}
+		return "1 day ago"
+	}
+	if hours > 0 {
+		return fmt.Sprintf("%d days, %d hours ago", days, hours)
+	}
+	return fmt.Sprintf("%d days ago", days)
+}
+
+func anonymizePeerDetail(a *anonymize.Anonymizer, peer *peerStateDetailOutput) {
+	peer.FQDN = a.AnonymizeDomain(peer.FQDN)
+	if localIP, port, err := net.SplitHostPort(peer.IceCandidateEndpoint.Local); err == nil {
+		peer.IceCandidateEndpoint.Local = fmt.Sprintf("%s:%s", a.AnonymizeIPString(localIP), port)
+	}
+	if remoteIP, port, err := net.SplitHostPort(peer.IceCandidateEndpoint.Remote); err == nil {
+		peer.IceCandidateEndpoint.Remote = fmt.Sprintf("%s:%s", a.AnonymizeIPString(remoteIP), port)
+	}
+
+	peer.RelayAddress = a.AnonymizeURI(peer.RelayAddress)
+
+	for i, route := range peer.Routes {
+		peer.Routes[i] = a.AnonymizeIPString(route)
+	}
+
+	for i, route := range peer.Routes {
+		peer.Routes[i] = a.AnonymizeRoute(route)
+	}
+}
+
+func anonymizeOverview(a *anonymize.Anonymizer, overview *statusOutputOverview) {
+	for i, peer := range overview.Peers.Details {
+		peer := peer
+		anonymizePeerDetail(a, &peer)
+		overview.Peers.Details[i] = peer
+	}
+
+	overview.ManagementState.URL = a.AnonymizeURI(overview.ManagementState.URL)
+	overview.ManagementState.Error = a.AnonymizeString(overview.ManagementState.Error)
+	overview.SignalState.URL = a.AnonymizeURI(overview.SignalState.URL)
+	overview.SignalState.Error = a.AnonymizeString(overview.SignalState.Error)
+
+	overview.IP = a.AnonymizeIPString(overview.IP)
+	for i, detail := range overview.Relays.Details {
+		detail.URI = a.AnonymizeURI(detail.URI)
+		detail.Error = a.AnonymizeString(detail.Error)
+		overview.Relays.Details[i] = detail
+	}
+
+	for i, nsGroup := range overview.NSServerGroups {
+		for j, domain := range nsGroup.Domains {
+			overview.NSServerGroups[i].Domains[j] = a.AnonymizeDomain(domain)
+		}
+		for j, ns := range nsGroup.Servers {
+			host, port, err := net.SplitHostPort(ns)
+			if err == nil {
+				overview.NSServerGroups[i].Servers[j] = fmt.Sprintf("%s:%s", a.AnonymizeIPString(host), port)
+			}
+		}
+	}
+
+	for i, route := range overview.Routes {
+		overview.Routes[i] = a.AnonymizeRoute(route)
+	}
+
+	overview.FQDN = a.AnonymizeDomain(overview.FQDN)
+}

client/cmd/status_test.go

@@ -3,6 +3,8 @@ package cmd
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
+	"runtime"
 	"testing"
 	"time"
 
@@ -35,7 +37,6 @@ var resp = &proto.StatusResponse{
 				ConnStatus:                 "Connected",
 				ConnStatusUpdate:           timestamppb.New(time.Date(2001, time.Month(1), 1, 1, 1, 1, 0, time.UTC)),
 				Relayed:                    false,
-				Direct:                     true,
 				LocalIceCandidateType:      "",
 				RemoteIceCandidateType:     "",
 				LocalIceCandidateEndpoint:  "",
@@ -55,7 +56,6 @@ var resp = &proto.StatusResponse{
 				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",
 				LocalIceCandidateEndpoint:  "10.0.0.1:10001",
@@ -135,7 +135,6 @@ var overview = statusOutputOverview{
 				Status:           "Connected",
 				LastStatusUpdate: time.Date(2001, 1, 1, 1, 1, 1, 0, time.UTC),
 				ConnType:         "P2P",
-				Direct:           true,
 				IceCandidateType: iceCandidateType{
 					Local:  "",
 					Remote: "",
@@ -159,7 +158,6 @@ var overview = statusOutputOverview{
 				Status:           "Connected",
 				LastStatusUpdate: time.Date(2002, 2, 2, 2, 2, 2, 0, time.UTC),
 				ConnType:         "Relayed",
-				Direct:           false,
 				IceCandidateType: iceCandidateType{
 					Local:  "relay",
 					Remote: "prflx",
@@ -281,7 +279,6 @@ func TestParsingToJSON(t *testing.T) {
                 "status": "Connected",
                 "lastStatusUpdate": "2001-01-01T01:01:01Z",
                 "connectionType": "P2P",
-                "direct": true,
                 "iceCandidateType": {
                   "local": "",
                   "remote": ""
@@ -290,6 +287,7 @@ func TestParsingToJSON(t *testing.T) {
                   "local": "",
                   "remote": ""
                 },
+				"relayAddress": "",
                 "lastWireguardHandshake": "2001-01-01T01:01:02Z",
                 "transferReceived": 200,
                 "transferSent": 100,
@@ -306,7 +304,6 @@ func TestParsingToJSON(t *testing.T) {
                 "status": "Connected",
                 "lastStatusUpdate": "2002-02-02T02:02:02Z",
                 "connectionType": "Relayed",
-                "direct": false,
                 "iceCandidateType": {
                   "local": "relay",
                   "remote": "prflx"
@@ -315,6 +312,7 @@ func TestParsingToJSON(t *testing.T) {
                   "local": "10.0.0.1:10001",
                   "remote": "10.0.10.1:10002"
                 },
+				"relayAddress": "",
                 "lastWireguardHandshake": "2002-02-02T02:02:03Z",
                 "transferReceived": 2000,
                 "transferSent": 1000,
@@ -406,13 +404,13 @@ func TestParsingToYAML(t *testing.T) {
           status: Connected
           lastStatusUpdate: 2001-01-01T01:01:01Z
           connectionType: P2P
-          direct: true
           iceCandidateType:
             local: ""
             remote: ""
           iceCandidateEndpoint:
             local: ""
             remote: ""
+          relayAddress: ""
           lastWireguardHandshake: 2001-01-01T01:01:02Z
           transferReceived: 200
           transferSent: 100
@@ -426,13 +424,13 @@ func TestParsingToYAML(t *testing.T) {
           status: Connected
           lastStatusUpdate: 2002-02-02T02:02:02Z
           connectionType: Relayed
-          direct: false
           iceCandidateType:
             local: relay
             remote: prflx
           iceCandidateEndpoint:
             local: 10.0.0.1:10001
             remote: 10.0.10.1:10002
+          relayAddress: ""
           lastWireguardHandshake: 2002-02-02T02:02:03Z
           transferReceived: 2000
           transferSent: 1000
@@ -487,9 +485,15 @@ dnsServers:
 }
 
 func TestParsingToDetail(t *testing.T) {
+	// Calculate time ago based on the fixture dates
+	lastConnectionUpdate1 := timeAgo(overview.Peers.Details[0].LastStatusUpdate)
+	lastHandshake1 := timeAgo(overview.Peers.Details[0].LastWireguardHandshake)
+	lastConnectionUpdate2 := timeAgo(overview.Peers.Details[1].LastStatusUpdate)
+	lastHandshake2 := timeAgo(overview.Peers.Details[1].LastWireguardHandshake)
+
 	detail := parseToFullDetailSummary(overview)
 
-	expectedDetail :=
+	expectedDetail := fmt.Sprintf(
 		`Peers detail:
  peer-1.awesome-domain.com:
   NetBird IP: 192.168.178.101
@@ -497,11 +501,11 @@ func TestParsingToDetail(t *testing.T) {
   Status: Connected
   -- detail --
   Connection type: P2P
-  Direct: true
   ICE candidate (Local/Remote): -/-
   ICE candidate endpoints (Local/Remote): -/-
-  Last connection update: 2001-01-01 01:01:01
-  Last WireGuard handshake: 2001-01-01 01:01:02
+  Relay server address: 
+  Last connection update: %s
+  Last WireGuard handshake: %s
   Transfer status (received/sent) 200 B/100 B
   Quantum resistance: false
   Routes: 10.1.0.0/24
@@ -513,18 +517,19 @@ func TestParsingToDetail(t *testing.T) {
   Status: Connected
   -- detail --
   Connection type: Relayed
-  Direct: false
   ICE candidate (Local/Remote): relay/prflx
   ICE candidate endpoints (Local/Remote): 10.0.0.1:10001/10.0.10.1:10002
-  Last connection update: 2002-02-02 02:02:02
-  Last WireGuard handshake: 2002-02-02 02:02:03
+  Relay server address: 
+  Last connection update: %s
+  Last WireGuard handshake: %s
   Transfer status (received/sent) 2.0 KiB/1000 B
   Quantum resistance: false
   Routes: -
   Latency: 10ms
 
+OS: %s/%s
 Daemon version: 0.14.1
-CLI version: development
+CLI version: %s
 Management: Connected to my-awesome-management.com:443
 Signal: Connected to my-awesome-signal.com:443
 Relays: 
@@ -539,7 +544,7 @@ Interface type: Kernel
 Quantum resistance: false
 Routes: 10.10.0.0/24
 Peers count: 2/2 Connected
-`
+`, lastConnectionUpdate1, lastHandshake1, lastConnectionUpdate2, lastHandshake2, runtime.GOOS, runtime.GOARCH, overview.CliVersion)
 
 	assert.Equal(t, expectedDetail, detail)
 }
@@ -547,8 +552,8 @@ Peers count: 2/2 Connected
 func TestParsingToShortVersion(t *testing.T) {
 	shortVersion := parseGeneralSummary(overview, false, false, false)
 
-	expectedString :=
-		`Daemon version: 0.14.1
+	expectedString := fmt.Sprintf("OS: %s/%s", runtime.GOOS, runtime.GOARCH) + `
+Daemon version: 0.14.1
 CLI version: development
 Management: Connected
 Signal: Connected
@@ -572,3 +577,31 @@ func TestParsingOfIP(t *testing.T) {
 
 	assert.Equal(t, "192.168.178.123\n", parsedIP)
 }
+
+func TestTimeAgo(t *testing.T) {
+	now := time.Now()
+
+	cases := []struct {
+		name     string
+		input    time.Time
+		expected string
+	}{
+		{"Now", now, "Now"},
+		{"Seconds ago", now.Add(-10 * time.Second), "10 seconds ago"},
+		{"One minute ago", now.Add(-1 * time.Minute), "1 minute ago"},
+		{"Minutes and seconds ago", now.Add(-(1*time.Minute + 30*time.Second)), "1 minute, 30 seconds ago"},
+		{"One hour ago", now.Add(-1 * time.Hour), "1 hour ago"},
+		{"Hours and minutes ago", now.Add(-(2*time.Hour + 15*time.Minute)), "2 hours, 15 minutes ago"},
+		{"One day ago", now.Add(-24 * time.Hour), "1 day ago"},
+		{"Multiple days ago", now.Add(-(72*time.Hour + 20*time.Minute)), "3 days ago"},
+		{"Zero time", time.Time{}, "-"},
+		{"Unix zero time", time.Unix(0, 0), "-"},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			result := timeAgo(tc.input)
+			assert.Equal(t, tc.expected, result, "Failed %s", tc.name)
+		})
+	}
+}

client/cmd/testutil_test.go

@@ -3,17 +3,21 @@ package cmd
 import (
 	"context"
 	"net"
-	"path/filepath"
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+	"go.opentelemetry.io/otel"
+
 	"github.com/netbirdio/netbird/management/server/activity"
+	"github.com/netbirdio/netbird/management/server/telemetry"
 
 	"github.com/netbirdio/netbird/util"
 
 	"google.golang.org/grpc"
 
 	"github.com/netbirdio/management-integrations/integrations"
+
 	clientProto "github.com/netbirdio/netbird/client/proto"
 	client "github.com/netbirdio/netbird/client/server"
 	mgmtProto "github.com/netbirdio/netbird/management/proto"
@@ -29,18 +33,12 @@ func startTestingServices(t *testing.T) string {
 	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)
+	_, mgmLis := startManagement(t, config, "../testdata/store.sqlite")
 	mgmAddr := mgmLis.Addr().String()
 	return mgmAddr
 }
@@ -52,7 +50,10 @@ func startSignal(t *testing.T) (*grpc.Server, net.Listener) {
 		t.Fatal(err)
 	}
 	s := grpc.NewServer()
-	sigProto.RegisterSignalExchangeServer(s, sig.NewServer())
+	srv, err := sig.NewServer(context.Background(), otel.Meter(""))
+	require.NoError(t, err)
+
+	sigProto.RegisterSignalExchangeServer(s, srv)
 	go func() {
 		if err := s.Serve(lis); err != nil {
 			panic(err)
@@ -62,30 +63,37 @@ func startSignal(t *testing.T) (*grpc.Server, net.Listener) {
 	return s, lis
 }
 
-func startManagement(t *testing.T, config *mgmt.Config) (*grpc.Server, net.Listener) {
+func startManagement(t *testing.T, config *mgmt.Config, testFile string) (*grpc.Server, net.Listener) {
 	t.Helper()
+
 	lis, err := net.Listen("tcp", ":0")
 	if err != nil {
 		t.Fatal(err)
 	}
 	s := grpc.NewServer()
-	store, err := mgmt.NewStoreFromJson(config.Datadir, nil)
+	store, cleanUp, err := mgmt.NewTestStoreFromSqlite(context.Background(), testFile, t.TempDir())
 	if err != nil {
 		t.Fatal(err)
 	}
+	t.Cleanup(cleanUp)
 
 	peersUpdateManager := mgmt.NewPeersUpdateManager(nil)
 	eventStore := &activity.InMemoryEventStore{}
 	if err != nil {
 		return nil, nil
 	}
-	iv, _ := integrations.NewIntegratedValidator(eventStore)
-	accountManager, err := mgmt.BuildManager(store, peersUpdateManager, nil, "", "netbird.selfhosted", eventStore, nil, false, iv)
+	iv, _ := integrations.NewIntegratedValidator(context.Background(), eventStore)
+
+	metrics, err := telemetry.NewDefaultAppMetrics(context.Background())
+	require.NoError(t, err)
+
+	accountManager, err := mgmt.BuildManager(context.Background(), store, peersUpdateManager, nil, "", "netbird.selfhosted", eventStore, nil, false, iv, metrics)
 	if err != nil {
 		t.Fatal(err)
 	}
-	turnManager := mgmt.NewTimeBasedAuthSecretsManager(peersUpdateManager, config.TURNConfig)
-	mgmtServer, err := mgmt.NewServer(config, accountManager, peersUpdateManager, turnManager, nil, nil)
+
+	secretsManager := mgmt.NewTimeBasedAuthSecretsManager(peersUpdateManager, config.TURNConfig, config.Relay)
+	mgmtServer, err := mgmt.NewServer(context.Background(), config, accountManager, peersUpdateManager, secretsManager, nil, nil)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -100,7 +108,7 @@ func startManagement(t *testing.T, config *mgmt.Config) (*grpc.Server, net.Liste
 }
 
 func startClientDaemon(
-	t *testing.T, ctx context.Context, managementURL, configPath string,
+	t *testing.T, ctx context.Context, _, configPath string,
 ) (*grpc.Server, net.Listener) {
 	t.Helper()
 	lis, err := net.Listen("tcp", "127.0.0.1:0")

client/cmd/up.go

@@ -7,17 +7,19 @@ import (
 	"net/netip"
 	"runtime"
 	"strings"
+	"time"
 
 	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"google.golang.org/grpc/codes"
 	gstatus "google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/durationpb"
 
+	"github.com/netbirdio/netbird/client/iface"
 	"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/iface"
 	"github.com/netbirdio/netbird/util"
 )
 
@@ -40,7 +42,12 @@ func init() {
 	upCmd.PersistentFlags().BoolVarP(&foregroundMode, "foreground-mode", "F", false, "start service in foreground")
 	upCmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name")
 	upCmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "Wireguard interface listening port")
+	upCmd.PersistentFlags().BoolVarP(&networkMonitor, networkMonitorFlag, "N", networkMonitor,
+		`Manage network monitoring. Defaults to true on Windows and macOS, false on Linux. `+
+			`E.g. --network-monitor=false to disable or --network-monitor=true to enable.`,
+	)
 	upCmd.PersistentFlags().StringSliceVar(&extraIFaceBlackList, extraIFaceBlackListFlag, nil, "Extra list of default interfaces to ignore for listening")
+	upCmd.PersistentFlags().DurationVar(&dnsRouteInterval, dnsRouteIntervalFlag, time.Minute, "DNS route update interval")
 }
 
 func upFunc(cmd *cobra.Command, args []string) error {
@@ -116,6 +123,10 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 		ic.WireguardPort = &p
 	}
 
+	if cmd.Flag(networkMonitorFlag).Changed {
+		ic.NetworkMonitor = &networkMonitor
+	}
+
 	if rootCmd.PersistentFlags().Changed(preSharedKeyFlag) {
 		ic.PreSharedKey = &preSharedKey
 	}
@@ -132,6 +143,15 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 		}
 	}
 
+	if cmd.Flag(dnsRouteIntervalFlag).Changed {
+		ic.DNSRouteInterval = &dnsRouteInterval
+	}
+
+	providedSetupKey, err := getSetupKey()
+	if err != nil {
+		return err
+	}
+
 	config, err := internal.UpdateOrCreateConfig(ic)
 	if err != nil {
 		return fmt.Errorf("get config file: %v", err)
@@ -139,7 +159,7 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 
 	config, _ = internal.UpdateOldManagementURL(ctx, config, configPath)
 
-	err = foregroundLogin(ctx, cmd, config, setupKey)
+	err = foregroundLogin(ctx, cmd, config, providedSetupKey)
 	if err != nil {
 		return fmt.Errorf("foreground login failed: %v", err)
 	}
@@ -147,7 +167,12 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 	var cancel context.CancelFunc
 	ctx, cancel = context.WithCancel(ctx)
 	SetupCloseHandler(ctx, cancel)
-	return internal.RunClient(ctx, config, peer.NewRecorder(config.ManagementURL.String()))
+
+	r := peer.NewRecorder(config.ManagementURL.String())
+	r.GetFullStatus()
+
+	connectClient := internal.NewConnectClient(ctx, config, r)
+	return connectClient.Run()
 }
 
 func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
@@ -182,8 +207,13 @@ func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
 		return nil
 	}
 
+	providedSetupKey, err := getSetupKey()
+	if err != nil {
+		return err
+	}
+
 	loginRequest := proto.LoginRequest{
-		SetupKey:             setupKey,
+		SetupKey:             providedSetupKey,
 		ManagementUrl:        managementURL,
 		AdminURL:             adminURL,
 		NatExternalIPs:       natExternalIPs,
@@ -226,6 +256,14 @@ func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
 		loginRequest.WireguardPort = &wp
 	}
 
+	if cmd.Flag(networkMonitorFlag).Changed {
+		loginRequest.NetworkMonitor = &networkMonitor
+	}
+
+	if cmd.Flag(dnsRouteIntervalFlag).Changed {
+		loginRequest.DnsRouteInterval = durationpb.New(dnsRouteInterval)
+	}
+
 	var loginErr error
 
 	var loginResp *proto.LoginResponse

client/cmd/up_daemon_test.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"context"
+	"os"
 	"testing"
 	"time"
 
@@ -40,6 +41,36 @@ func TestUpDaemon(t *testing.T) {
 		return
 	}
 
+	// Test the setup-key-file flag.
+	tempFile, err := os.CreateTemp("", "setup-key")
+	if err != nil {
+		t.Errorf("could not create temp file, got error %v", err)
+		return
+	}
+	defer os.Remove(tempFile.Name())
+	if _, err := tempFile.Write([]byte("A2C8E62B-38F5-4553-B31E-DD66C696CEBB")); err != nil {
+		t.Errorf("could not write to temp file, got error %v", err)
+		return
+	}
+	if err := tempFile.Close(); err != nil {
+		t.Errorf("unable to close file, got error %v", err)
+	}
+	rootCmd.SetArgs([]string{
+		"login",
+		"--daemon-addr", "tcp://" + cliAddr,
+		"--setup-key-file", tempFile.Name(),
+		"--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,

client/errors/errors.go

@@ -0,0 +1,30 @@
+package errors
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/hashicorp/go-multierror"
+)
+
+func formatError(es []error) string {
+	if len(es) == 1 {
+		return fmt.Sprintf("1 error occurred:\n\t* %s", es[0])
+	}
+
+	points := make([]string, len(es))
+	for i, err := range es {
+		points[i] = fmt.Sprintf("* %s", err)
+	}
+
+	return fmt.Sprintf(
+		"%d errors occurred:\n\t%s",
+		len(es), strings.Join(points, "\n\t"))
+}
+
+func FormatErrorOrNil(err *multierror.Error) error {
+	if err != nil {
+		err.ErrorFormat = formatError
+	}
+	return err.ErrorOrNil()
+}

client/firewall/create_linux.go

@@ -42,20 +42,20 @@ func NewFirewall(context context.Context, iface IFaceMapper) (firewall.Manager,
 
 	switch check() {
 	case IPTABLES:
-		log.Debug("creating an iptables firewall manager")
+		log.Info("creating an iptables firewall manager")
 		fm, errFw = nbiptables.Create(context, iface)
 		if errFw != nil {
 			log.Errorf("failed to create iptables manager: %s", errFw)
 		}
 	case NFTABLES:
-		log.Debug("creating an nftables firewall manager")
+		log.Info("creating an nftables firewall manager")
 		fm, errFw = nbnftables.Create(context, iface)
 		if errFw != nil {
 			log.Errorf("failed to create nftables manager: %s", errFw)
 		}
 	default:
 		errFw = fmt.Errorf("no firewall manager found")
-		log.Debug("no firewall manager found, try to use userspace packet filtering firewall")
+		log.Info("no firewall manager found, trying to use userspace packet filtering firewall")
 	}
 
 	if iface.IsUserspaceBind() {
@@ -85,16 +85,58 @@ func NewFirewall(context context.Context, iface IFaceMapper) (firewall.Manager,
 
 // check returns the firewall type based on common lib checks. It returns UNKNOWN if no firewall is found.
 func check() FWType {
-	nf := nftables.Conn{}
-	if _, err := nf.ListChains(); err == nil && os.Getenv(SKIP_NFTABLES_ENV) != "true" {
-		return NFTABLES
+	useIPTABLES := false
+	var iptablesChains []string
+	ip, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
+	if err == nil && isIptablesClientAvailable(ip) {
+		major, minor, _ := ip.GetIptablesVersion()
+		// use iptables when its version is lower than 1.8.0 which doesn't work well with our nftables manager
+		if major < 1 || (major == 1 && minor < 8) {
+			return IPTABLES
+		}
+
+		useIPTABLES = true
+
+		iptablesChains, err = ip.ListChains("filter")
+		if err != nil {
+			log.Errorf("failed to list iptables chains: %s", err)
+			useIPTABLES = false
+		}
 	}
 
-	ip, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
-	if err != nil {
-		return UNKNOWN
+	nf := nftables.Conn{}
+	if chains, err := nf.ListChains(); err == nil && os.Getenv(SKIP_NFTABLES_ENV) != "true" {
+		if !useIPTABLES {
+			return NFTABLES
+		}
+
+		// search for chains where table is filter
+		// if we find one, we assume that nftables manager can be used with iptables
+		for _, chain := range chains {
+			if chain.Table.Name == "filter" {
+				return NFTABLES
+			}
+		}
+
+		// check tables for the following constraints:
+		// 1. there is no chain in nftables for the filter table and there is at least one chain in iptables, we assume that nftables manager can not be used
+		// 2. there is no tables or more than one table, we assume that nftables manager can be used
+		// 3. there is only one table and its name is filter, we assume that nftables manager can not be used, since there was no chain in it
+		// 4. if we find an error we log and continue with iptables check
+		nbTablesList, err := nf.ListTables()
+		switch {
+		case err == nil && len(iptablesChains) > 0:
+			return IPTABLES
+		case err == nil && len(nbTablesList) != 1:
+			return NFTABLES
+		case err == nil && len(nbTablesList) == 1 && nbTablesList[0].Name == "filter":
+			return IPTABLES
+		case err != nil:
+			log.Errorf("failed to list nftables tables on fw manager discovery: %s", err)
+		}
 	}
-	if isIptablesClientAvailable(ip) {
+
+	if useIPTABLES {
 		return IPTABLES
 	}
 

client/firewall/iface.go

@@ -1,11 +1,13 @@
 package firewall
 
-import "github.com/netbirdio/netbird/iface"
+import (
+	"github.com/netbirdio/netbird/client/iface/device"
+)
 
 // IFaceMapper defines subset methods of interface required for manager
 type IFaceMapper interface {
 	Name() string
-	Address() iface.WGAddress
+	Address() device.WGAddress
 	IsUserspaceBind() bool
-	SetFilter(iface.PacketFilter) error
+	SetFilter(device.PacketFilter) error
 }

client/firewall/iptables/acl_linux.go

@@ -19,24 +19,22 @@ const (
 	// rules chains contains the effective ACL rules
 	chainNameInputRules  = "NETBIRD-ACL-INPUT"
 	chainNameOutputRules = "NETBIRD-ACL-OUTPUT"
-
-	postRoutingMark = "0x000007e4"
 )
 
 type aclManager struct {
-	iptablesClient      *iptables.IPTables
-	wgIface             iFaceMapper
-	routeingFwChainName string
+	iptablesClient     *iptables.IPTables
+	wgIface            iFaceMapper
+	routingFwChainName string
 
 	entries    map[string][][]string
 	ipsetStore *ipsetStore
 }
 
-func newAclManager(iptablesClient *iptables.IPTables, wgIface iFaceMapper, routeingFwChainName string) (*aclManager, error) {
+func newAclManager(iptablesClient *iptables.IPTables, wgIface iFaceMapper, routingFwChainName string) (*aclManager, error) {
 	m := &aclManager{
-		iptablesClient:      iptablesClient,
-		wgIface:             wgIface,
-		routeingFwChainName: routeingFwChainName,
+		iptablesClient:     iptablesClient,
+		wgIface:            wgIface,
+		routingFwChainName: routingFwChainName,
 
 		entries:    make(map[string][][]string),
 		ipsetStore: newIpsetStore(),
@@ -61,7 +59,7 @@ func newAclManager(iptablesClient *iptables.IPTables, wgIface iFaceMapper, route
 	return m, nil
 }
 
-func (m *aclManager) AddFiltering(
+func (m *aclManager) AddPeerFiltering(
 	ip net.IP,
 	protocol firewall.Protocol,
 	sPort *firewall.Port,
@@ -127,7 +125,7 @@ func (m *aclManager) AddFiltering(
 		return nil, fmt.Errorf("rule already exists")
 	}
 
-	if err := m.iptablesClient.Insert("filter", chain, 1, specs...); err != nil {
+	if err := m.iptablesClient.Append("filter", chain, specs...); err != nil {
 		return nil, err
 	}
 
@@ -139,28 +137,16 @@ func (m *aclManager) AddFiltering(
 		chain:     chain,
 	}
 
-	if !shouldAddToPrerouting(protocol, dPort, direction) {
-		return []firewall.Rule{rule}, nil
-	}
-
-	rulePrerouting, err := m.addPreroutingFilter(ipsetName, string(protocol), dPortVal, ip)
-	if err != nil {
-		return []firewall.Rule{rule}, err
-	}
-	return []firewall.Rule{rule, rulePrerouting}, nil
+	return []firewall.Rule{rule}, nil
 }
 
-// DeleteRule from the firewall by rule definition
-func (m *aclManager) DeleteRule(rule firewall.Rule) error {
+// DeletePeerRule from the firewall by rule definition
+func (m *aclManager) DeletePeerRule(rule firewall.Rule) error {
 	r, ok := rule.(*Rule)
 	if !ok {
 		return fmt.Errorf("invalid rule type")
 	}
 
-	if r.chain == "PREROUTING" {
-		goto DELETERULE
-	}
-
 	if ipsetList, ok := m.ipsetStore.ipset(r.ipsetName); ok {
 		// delete IP from ruleset IPs list and ipset
 		if _, ok := ipsetList.ips[r.ip]; ok {
@@ -185,14 +171,7 @@ func (m *aclManager) DeleteRule(rule firewall.Rule) error {
 		}
 	}
 
-DELETERULE:
-	var table string
-	if r.chain == "PREROUTING" {
-		table = "mangle"
-	} else {
-		table = "filter"
-	}
-	err := m.iptablesClient.Delete(table, r.chain, r.specs...)
+	err := m.iptablesClient.Delete(tableName, r.chain, r.specs...)
 	if err != nil {
 		log.Debugf("failed to delete rule, %s, %v: %s", r.chain, r.specs, err)
 	}
@@ -203,44 +182,6 @@ func (m *aclManager) Reset() error {
 	return m.cleanChains()
 }
 
-func (m *aclManager) addPreroutingFilter(ipsetName string, protocol string, port string, ip net.IP) (*Rule, error) {
-	var src []string
-	if ipsetName != "" {
-		src = []string{"-m", "set", "--set", ipsetName, "src"}
-	} else {
-		src = []string{"-s", ip.String()}
-	}
-	specs := []string{
-		"-d", m.wgIface.Address().IP.String(),
-		"-p", protocol,
-		"--dport", port,
-		"-j", "MARK", "--set-mark", postRoutingMark,
-	}
-
-	specs = append(src, specs...)
-
-	ok, err := m.iptablesClient.Exists("mangle", "PREROUTING", specs...)
-	if err != nil {
-		return nil, fmt.Errorf("failed to check rule: %w", err)
-	}
-	if ok {
-		return nil, fmt.Errorf("rule already exists")
-	}
-
-	if err := m.iptablesClient.Insert("mangle", "PREROUTING", 1, specs...); err != nil {
-		return nil, err
-	}
-
-	rule := &Rule{
-		ruleID:    uuid.New().String(),
-		specs:     specs,
-		ipsetName: ipsetName,
-		ip:        ip.String(),
-		chain:     "PREROUTING",
-	}
-	return rule, nil
-}
-
 // todo write less destructive cleanup mechanism
 func (m *aclManager) cleanChains() error {
 	ok, err := m.iptablesClient.ChainExists(tableName, chainNameOutputRules)
@@ -291,25 +232,6 @@ func (m *aclManager) cleanChains() error {
 		}
 	}
 
-	ok, err = m.iptablesClient.ChainExists("mangle", "PREROUTING")
-	if err != nil {
-		log.Debugf("failed to list chains: %s", err)
-		return err
-	}
-	if ok {
-		for _, rule := range m.entries["PREROUTING"] {
-			err := m.iptablesClient.DeleteIfExists("mangle", "PREROUTING", rule...)
-			if err != nil {
-				log.Errorf("failed to delete rule: %v, %s", rule, err)
-			}
-		}
-		err = m.iptablesClient.ClearChain("mangle", "PREROUTING")
-		if err != nil {
-			log.Debugf("failed to clear %s chain: %s", "PREROUTING", err)
-			return err
-		}
-	}
-
 	for _, ipsetName := range m.ipsetStore.ipsetNames() {
 		if err := ipset.Flush(ipsetName); err != nil {
 			log.Errorf("flush ipset %q during reset: %v", ipsetName, err)
@@ -338,17 +260,9 @@ func (m *aclManager) createDefaultChains() error {
 
 	for chainName, rules := range m.entries {
 		for _, rule := range rules {
-			if chainName == "FORWARD" {
-				// position 2 because we add it after router's, jump rule
-				if err := m.iptablesClient.InsertUnique(tableName, "FORWARD", 2, rule...); err != nil {
-					log.Debugf("failed to create input chain jump rule: %s", err)
-					return err
-				}
-			} else {
-				if err := m.iptablesClient.AppendUnique(tableName, chainName, rule...); err != nil {
-					log.Debugf("failed to create input chain jump rule: %s", err)
-					return err
-				}
+			if err := m.iptablesClient.InsertUnique(tableName, chainName, 1, rule...); err != nil {
+				log.Debugf("failed to create input chain jump rule: %s", err)
+				return err
 			}
 		}
 	}
@@ -356,40 +270,29 @@ func (m *aclManager) createDefaultChains() error {
 	return nil
 }
 
+// seedInitialEntries adds default rules to the entries map, rules are inserted on pos 1, hence the order is reversed.
+// We want to make sure our traffic is not dropped by existing rules.
+
+// The existing FORWARD rules/policies decide outbound traffic towards our interface.
+// In case the FORWARD policy is set to "drop", we add an established/related rule to allow return traffic for the inbound rule.
+
+// The OUTPUT chain gets an extra rule to allow traffic to any set up routes, the return traffic is handled by the INPUT related/established rule.
 func (m *aclManager) seedInitialEntries() {
-	m.appendToEntries("INPUT",
-		[]string{"-i", m.wgIface.Name(), "!", "-s", m.wgIface.Address().String(), "-d", m.wgIface.Address().String(), "-j", "ACCEPT"})
 
-	m.appendToEntries("INPUT",
-		[]string{"-i", m.wgIface.Name(), "-s", m.wgIface.Address().String(), "!", "-d", m.wgIface.Address().String(), "-j", "ACCEPT"})
-
-	m.appendToEntries("INPUT",
-		[]string{"-i", m.wgIface.Name(), "-s", m.wgIface.Address().String(), "-d", m.wgIface.Address().String(), "-j", chainNameInputRules})
+	established := getConntrackEstablished()
 
 	m.appendToEntries("INPUT", []string{"-i", m.wgIface.Name(), "-j", "DROP"})
-
-	m.appendToEntries("OUTPUT",
-		[]string{"-o", m.wgIface.Name(), "!", "-s", m.wgIface.Address().String(), "-d", m.wgIface.Address().String(), "-j", "ACCEPT"})
-
-	m.appendToEntries("OUTPUT",
-		[]string{"-o", m.wgIface.Name(), "-s", m.wgIface.Address().String(), "!", "-d", m.wgIface.Address().String(), "-j", "ACCEPT"})
-
-	m.appendToEntries("OUTPUT",
-		[]string{"-o", m.wgIface.Name(), "-s", m.wgIface.Address().String(), "-d", m.wgIface.Address().String(), "-j", chainNameOutputRules})
+	m.appendToEntries("INPUT", []string{"-i", m.wgIface.Name(), "-j", chainNameInputRules})
+	m.appendToEntries("INPUT", append([]string{"-i", m.wgIface.Name()}, established...))
 
 	m.appendToEntries("OUTPUT", []string{"-o", m.wgIface.Name(), "-j", "DROP"})
+	m.appendToEntries("OUTPUT", []string{"-o", m.wgIface.Name(), "-j", chainNameOutputRules})
+	m.appendToEntries("OUTPUT", []string{"-o", m.wgIface.Name(), "!", "-d", m.wgIface.Address().String(), "-j", "ACCEPT"})
+	m.appendToEntries("OUTPUT", append([]string{"-o", m.wgIface.Name()}, established...))
 
 	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", "DROP"})
-	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", chainNameInputRules})
-	m.appendToEntries("FORWARD",
-		[]string{"-o", m.wgIface.Name(), "-m", "mark", "--mark", postRoutingMark, "-j", "ACCEPT"})
-	m.appendToEntries("FORWARD",
-		[]string{"-i", m.wgIface.Name(), "-m", "mark", "--mark", postRoutingMark, "-j", "ACCEPT"})
-	m.appendToEntries("FORWARD", []string{"-o", m.wgIface.Name(), "-j", m.routeingFwChainName})
-	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", m.routeingFwChainName})
-
-	m.appendToEntries("PREROUTING",
-		[]string{"-t", "mangle", "-i", m.wgIface.Name(), "!", "-s", m.wgIface.Address().String(), "-d", m.wgIface.Address().IP.String(), "-m", "mark", "--mark", postRoutingMark})
+	m.appendToEntries("FORWARD", []string{"-i", m.wgIface.Name(), "-j", m.routingFwChainName})
+	m.appendToEntries("FORWARD", append([]string{"-o", m.wgIface.Name()}, established...))
 }
 
 func (m *aclManager) appendToEntries(chainName string, spec []string) {
@@ -456,18 +359,3 @@ func transformIPsetName(ipsetName string, sPort, dPort string) string {
 		return ipsetName
 	}
 }
-
-func shouldAddToPrerouting(proto firewall.Protocol, dPort *firewall.Port, direction firewall.RuleDirection) bool {
-	if proto == "all" {
-		return false
-	}
-
-	if direction != firewall.RuleDirectionIN {
-		return false
-	}
-
-	if dPort == nil {
-		return false
-	}
-	return true
-}

client/firewall/iptables/manager_linux.go

@@ -4,13 +4,14 @@ import (
 	"context"
 	"fmt"
 	"net"
+	"net/netip"
 	"sync"
 
 	"github.com/coreos/go-iptables/iptables"
 	log "github.com/sirupsen/logrus"
 
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/client/iface"
 )
 
 // Manager of iptables firewall
@@ -21,7 +22,7 @@ type Manager struct {
 
 	ipv4Client *iptables.IPTables
 	aclMgr     *aclManager
-	router     *routerManager
+	router     *router
 }
 
 // iFaceMapper defines subset methods of interface required for manager
@@ -43,12 +44,12 @@ func Create(context context.Context, wgIface iFaceMapper) (*Manager, error) {
 		ipv4Client: iptablesClient,
 	}
 
-	m.router, err = newRouterManager(context, iptablesClient)
+	m.router, err = newRouter(context, iptablesClient, wgIface)
 	if err != nil {
 		log.Debugf("failed to initialize route related chains: %s", err)
 		return nil, err
 	}
-	m.aclMgr, err = newAclManager(iptablesClient, wgIface, m.router.RouteingFwChainName())
+	m.aclMgr, err = newAclManager(iptablesClient, wgIface, chainRTFWD)
 	if err != nil {
 		log.Debugf("failed to initialize ACL manager: %s", err)
 		return nil, err
@@ -57,10 +58,10 @@ func Create(context context.Context, wgIface iFaceMapper) (*Manager, error) {
 	return m, nil
 }
 
-// AddFiltering rule to the firewall
+// AddPeerFiltering adds a rule to the firewall
 //
 // Comment will be ignored because some system this feature is not supported
-func (m *Manager) AddFiltering(
+func (m *Manager) AddPeerFiltering(
 	ip net.IP,
 	protocol firewall.Protocol,
 	sPort *firewall.Port,
@@ -73,33 +74,62 @@ func (m *Manager) AddFiltering(
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.aclMgr.AddFiltering(ip, protocol, sPort, dPort, direction, action, ipsetName)
+	return m.aclMgr.AddPeerFiltering(ip, protocol, sPort, dPort, direction, action, ipsetName)
 }
 
-// DeleteRule from the firewall by rule definition
-func (m *Manager) DeleteRule(rule firewall.Rule) error {
+func (m *Manager) AddRouteFiltering(
+	sources [] netip.Prefix,
+	destination netip.Prefix,
+	proto firewall.Protocol,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
+	action firewall.Action,
+) (firewall.Rule, error) {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.aclMgr.DeleteRule(rule)
+	if !destination.Addr().Is4() {
+		return nil, fmt.Errorf("unsupported IP version: %s", destination.Addr().String())
+	}
+
+	return m.router.AddRouteFiltering(sources, destination, proto, sPort, dPort, action)
+}
+
+// DeletePeerRule from the firewall by rule definition
+func (m *Manager) DeletePeerRule(rule firewall.Rule) error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	return m.aclMgr.DeletePeerRule(rule)
+}
+
+func (m *Manager) DeleteRouteRule(rule firewall.Rule) error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	return m.router.DeleteRouteRule(rule)
 }
 
 func (m *Manager) IsServerRouteSupported() bool {
 	return true
 }
 
-func (m *Manager) InsertRoutingRules(pair firewall.RouterPair) error {
+func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.router.InsertRoutingRules(pair)
+	return m.router.AddNatRule(pair)
 }
 
-func (m *Manager) RemoveRoutingRules(pair firewall.RouterPair) error {
+func (m *Manager) RemoveNatRule(pair firewall.RouterPair) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.router.RemoveRoutingRules(pair)
+	return m.router.RemoveNatRule(pair)
+}
+
+func (m *Manager) SetLegacyManagement(isLegacy bool) error {
+	return firewall.SetLegacyManagement(m.router, isLegacy)
 }
 
 // Reset firewall to the default state
@@ -125,7 +155,7 @@ func (m *Manager) AllowNetbird() error {
 		return nil
 	}
 
-	_, err := m.AddFiltering(
+	_, err := m.AddPeerFiltering(
 		net.ParseIP("0.0.0.0"),
 		"all",
 		nil,
@@ -138,7 +168,7 @@ func (m *Manager) AllowNetbird() error {
 	if err != nil {
 		return fmt.Errorf("failed to allow netbird interface traffic: %w", err)
 	}
-	_, err = m.AddFiltering(
+	_, err = m.AddPeerFiltering(
 		net.ParseIP("0.0.0.0"),
 		"all",
 		nil,
@@ -153,3 +183,7 @@ func (m *Manager) AllowNetbird() error {
 
 // Flush doesn't need to be implemented for this manager
 func (m *Manager) Flush() error { return nil }
+
+func getConntrackEstablished() []string {
+	return []string{"-m", "conntrack", "--ctstate", "RELATED,ESTABLISHED", "-j", "ACCEPT"}
+}

client/firewall/iptables/manager_linux_test.go

@@ -11,9 +11,24 @@ import (
 	"github.com/stretchr/testify/require"
 
 	fw "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/client/iface"
 )
 
+var ifaceMock = &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),
+			},
+		}
+	},
+}
+
 // iFaceMapper defines subset methods of interface required for manager
 type iFaceMock struct {
 	NameFunc    func() string
@@ -40,23 +55,8 @@ 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(context.Background(), mock)
+	manager, err := Create(context.Background(), ifaceMock)
 	require.NoError(t, err)
 
 	time.Sleep(time.Second)
@@ -72,7 +72,7 @@ func TestIptablesManager(t *testing.T) {
 	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")
+		rule1, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept HTTP traffic")
 		require.NoError(t, err, "failed to add rule")
 
 		for _, r := range rule1 {
@@ -87,7 +87,7 @@ func TestIptablesManager(t *testing.T) {
 		port := &fw.Port{
 			Values: []int{8043: 8046},
 		}
-		rule2, err = manager.AddFiltering(
+		rule2, err = manager.AddPeerFiltering(
 			ip, "tcp", port, nil, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTPS traffic from ports range")
 		require.NoError(t, err, "failed to add rule")
 
@@ -99,7 +99,7 @@ func TestIptablesManager(t *testing.T) {
 
 	t.Run("delete first rule", func(t *testing.T) {
 		for _, r := range rule1 {
-			err := manager.DeleteRule(r)
+			err := manager.DeletePeerRule(r)
 			require.NoError(t, err, "failed to delete rule")
 
 			checkRuleSpecs(t, ipv4Client, chainNameOutputRules, false, r.(*Rule).specs...)
@@ -108,7 +108,7 @@ func TestIptablesManager(t *testing.T) {
 
 	t.Run("delete second rule", func(t *testing.T) {
 		for _, r := range rule2 {
-			err := manager.DeleteRule(r)
+			err := manager.DeletePeerRule(r)
 			require.NoError(t, err, "failed to delete rule")
 		}
 
@@ -119,7 +119,7 @@ func TestIptablesManager(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")
+		_, err = manager.AddPeerFiltering(ip, "udp", nil, port, fw.RuleDirectionOUT, fw.ActionAccept, "", "accept Fake DNS traffic")
 		require.NoError(t, err, "failed to add rule")
 
 		err = manager.Reset()
@@ -170,7 +170,7 @@ func TestIptablesManagerIPSet(t *testing.T) {
 	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(
+		rule1, err = manager.AddPeerFiltering(
 			ip, "tcp", nil, port, fw.RuleDirectionOUT,
 			fw.ActionAccept, "default", "accept HTTP traffic",
 		)
@@ -189,7 +189,7 @@ func TestIptablesManagerIPSet(t *testing.T) {
 		port := &fw.Port{
 			Values: []int{443},
 		}
-		rule2, err = manager.AddFiltering(
+		rule2, err = manager.AddPeerFiltering(
 			ip, "tcp", port, nil, fw.RuleDirectionIN, fw.ActionAccept,
 			"default", "accept HTTPS traffic from ports range",
 		)
@@ -202,7 +202,7 @@ func TestIptablesManagerIPSet(t *testing.T) {
 
 	t.Run("delete first rule", func(t *testing.T) {
 		for _, r := range rule1 {
-			err := manager.DeleteRule(r)
+			err := manager.DeletePeerRule(r)
 			require.NoError(t, err, "failed to delete rule")
 
 			require.NotContains(t, manager.aclMgr.ipsetStore.ipsets, r.(*Rule).ruleID, "rule must be removed form the ruleset index")
@@ -211,7 +211,7 @@ func TestIptablesManagerIPSet(t *testing.T) {
 
 	t.Run("delete second rule", func(t *testing.T) {
 		for _, r := range rule2 {
-			err := manager.DeleteRule(r)
+			err := manager.DeletePeerRule(r)
 			require.NoError(t, err, "failed to delete rule")
 
 			require.Empty(t, manager.aclMgr.ipsetStore.ipsets, "rulesets index after removed second rule must be empty")
@@ -269,9 +269,9 @@ func TestIptablesCreatePerformance(t *testing.T) {
 			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")
+					_, err = manager.AddPeerFiltering(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")
+					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
 				}
 
 				require.NoError(t, err, "failed to add rule")

client/firewall/iptables/router_linux.go

@@ -5,336 +5,478 @@ package iptables
 import (
 	"context"
 	"fmt"
+	"net/netip"
+	"strconv"
 	"strings"
 
 	"github.com/coreos/go-iptables/iptables"
+	"github.com/hashicorp/go-multierror"
+	"github.com/nadoo/ipset"
 	log "github.com/sirupsen/logrus"
 
+	nberrors "github.com/netbirdio/netbird/client/errors"
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	"github.com/netbirdio/netbird/client/internal/acl/id"
+	"github.com/netbirdio/netbird/client/internal/routemanager/refcounter"
 )
 
 const (
-	Ipv4Forwarding = "netbird-rt-forwarding"
-	ipv4Nat        = "netbird-rt-nat"
+	ipv4Nat = "netbird-rt-nat"
 )
 
 // constants needed to manage and create iptable rules
 const (
 	tableFilter             = "filter"
 	tableNat                = "nat"
-	chainFORWARD            = "FORWARD"
 	chainPOSTROUTING        = "POSTROUTING"
 	chainRTNAT              = "NETBIRD-RT-NAT"
 	chainRTFWD              = "NETBIRD-RT-FWD"
 	routingFinalForwardJump = "ACCEPT"
 	routingFinalNatJump     = "MASQUERADE"
+
+	matchSet = "--match-set"
 )
 
-type routerManager struct {
-	ctx            context.Context
-	stop           context.CancelFunc
-	iptablesClient *iptables.IPTables
-	rules          map[string][]string
+type routeFilteringRuleParams struct {
+	Sources     []netip.Prefix
+	Destination netip.Prefix
+	Proto       firewall.Protocol
+	SPort       *firewall.Port
+	DPort       *firewall.Port
+	Direction   firewall.RuleDirection
+	Action      firewall.Action
+	SetName     string
 }
 
-func newRouterManager(parentCtx context.Context, iptablesClient *iptables.IPTables) (*routerManager, error) {
+type router struct {
+	ctx              context.Context
+	stop             context.CancelFunc
+	iptablesClient   *iptables.IPTables
+	rules            map[string][]string
+	ipsetCounter     *refcounter.Counter[string, []netip.Prefix, struct{}]
+	wgIface          iFaceMapper
+	legacyManagement bool
+}
+
+func newRouter(parentCtx context.Context, iptablesClient *iptables.IPTables, wgIface iFaceMapper) (*router, error) {
 	ctx, cancel := context.WithCancel(parentCtx)
-	m := &routerManager{
+	r := &router{
 		ctx:            ctx,
 		stop:           cancel,
 		iptablesClient: iptablesClient,
 		rules:          make(map[string][]string),
+		wgIface:        wgIface,
 	}
 
-	err := m.cleanUpDefaultForwardRules()
+	r.ipsetCounter = refcounter.New(
+		r.createIpSet,
+		func(name string, _ struct{}) error {
+			return r.deleteIpSet(name)
+		},
+	)
+
+	if err := ipset.Init(); err != nil {
+		return nil, fmt.Errorf("init ipset: %w", err)
+	}
+
+	err := r.cleanUpDefaultForwardRules()
 	if err != nil {
-		log.Errorf("failed to cleanup routing rules: %s", err)
+		log.Errorf("cleanup routing rules: %s", err)
 		return nil, err
 	}
-	err = m.createContainers()
+	err = r.createContainers()
 	if err != nil {
-		log.Errorf("failed to create containers for route: %s", err)
+		log.Errorf("create containers for route: %s", err)
 	}
-	return m, err
+	return r, err
 }
 
-// InsertRoutingRules inserts an iptables rule pair to the forwarding chain and if enabled, to the nat chain
-func (i *routerManager) InsertRoutingRules(pair firewall.RouterPair) error {
-	err := i.insertRoutingRule(firewall.ForwardingFormat, tableFilter, chainRTFWD, routingFinalForwardJump, pair)
-	if err != nil {
-		return err
+func (r *router) AddRouteFiltering(
+	sources []netip.Prefix,
+	destination netip.Prefix,
+	proto firewall.Protocol,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
+	action firewall.Action,
+) (firewall.Rule, error) {
+	ruleKey := id.GenerateRouteRuleKey(sources, destination, proto, sPort, dPort, action)
+	if _, ok := r.rules[string(ruleKey)]; ok {
+		return ruleKey, nil
 	}
 
-	err = i.insertRoutingRule(firewall.InForwardingFormat, tableFilter, chainRTFWD, routingFinalForwardJump, firewall.GetInPair(pair))
-	if err != nil {
-		return err
+	var setName string
+	if len(sources) > 1 {
+		setName = firewall.GenerateSetName(sources)
+		if _, err := r.ipsetCounter.Increment(setName, sources); err != nil {
+			return nil, fmt.Errorf("create or get ipset: %w", err)
+		}
+	}
+
+	params := routeFilteringRuleParams{
+		Sources:     sources,
+		Destination: destination,
+		Proto:       proto,
+		SPort:       sPort,
+		DPort:       dPort,
+		Action:      action,
+		SetName:     setName,
+	}
+
+	rule := genRouteFilteringRuleSpec(params)
+	if err := r.iptablesClient.Append(tableFilter, chainRTFWD, rule...); err != nil {
+		return nil, fmt.Errorf("add route rule: %v", err)
+	}
+
+	r.rules[string(ruleKey)] = rule
+
+	return ruleKey, nil
+}
+
+func (r *router) DeleteRouteRule(rule firewall.Rule) error {
+	ruleKey := rule.GetRuleID()
+
+	if rule, exists := r.rules[ruleKey]; exists {
+		setName := r.findSetNameInRule(rule)
+
+		if err := r.iptablesClient.Delete(tableFilter, chainRTFWD, rule...); err != nil {
+			return fmt.Errorf("delete route rule: %v", err)
+		}
+		delete(r.rules, ruleKey)
+
+		if setName != "" {
+			if _, err := r.ipsetCounter.Decrement(setName); err != nil {
+				return fmt.Errorf("failed to remove ipset: %w", err)
+			}
+		}
+	} else {
+		log.Debugf("route rule %s not found", ruleKey)
+	}
+
+	return nil
+}
+
+func (r *router) findSetNameInRule(rule []string) string {
+	for i, arg := range rule {
+		if arg == "-m" && i+3 < len(rule) && rule[i+1] == "set" && rule[i+2] == matchSet {
+			return rule[i+3]
+		}
+	}
+	return ""
+}
+
+func (r *router) createIpSet(setName string, sources []netip.Prefix) (struct{}, error) {
+	if err := ipset.Create(setName, ipset.OptTimeout(0)); err != nil {
+		return struct{}{}, fmt.Errorf("create set %s: %w", setName, err)
+	}
+
+	for _, prefix := range sources {
+		if err := ipset.AddPrefix(setName, prefix); err != nil {
+			return struct{}{}, fmt.Errorf("add element to set %s: %w", setName, err)
+		}
+	}
+
+	return struct{}{}, nil
+}
+
+func (r *router) deleteIpSet(setName string) error {
+	if err := ipset.Destroy(setName); err != nil {
+		return fmt.Errorf("destroy set %s: %w", setName, err)
+	}
+	return nil
+}
+
+// AddNatRule inserts an iptables rule pair into the nat chain
+func (r *router) AddNatRule(pair firewall.RouterPair) error {
+	if r.legacyManagement {
+		log.Warnf("This peer is connected to a NetBird Management service with an older version. Allowing all traffic for %s", pair.Destination)
+		if err := r.addLegacyRouteRule(pair); err != nil {
+			return fmt.Errorf("add legacy routing rule: %w", err)
+		}
 	}
 
 	if !pair.Masquerade {
 		return nil
 	}
 
-	err = i.insertRoutingRule(firewall.NatFormat, tableNat, chainRTNAT, routingFinalNatJump, pair)
-	if err != nil {
-		return err
+	if err := r.addNatRule(pair); err != nil {
+		return fmt.Errorf("add nat rule: %w", err)
 	}
 
-	err = i.insertRoutingRule(firewall.InNatFormat, tableNat, chainRTNAT, routingFinalNatJump, firewall.GetInPair(pair))
-	if err != nil {
-		return err
+	if err := r.addNatRule(firewall.GetInversePair(pair)); err != nil {
+		return fmt.Errorf("add inverse nat rule: %w", err)
 	}
 
 	return nil
 }
 
-// insertRoutingRule inserts an iptable rule
-func (i *routerManager) insertRoutingRule(keyFormat, table, chain, jump string, pair firewall.RouterPair) error {
-	var err error
+// RemoveNatRule removes an iptables rule pair from forwarding and nat chains
+func (r *router) RemoveNatRule(pair firewall.RouterPair) error {
+	if err := r.removeNatRule(pair); err != nil {
+		return fmt.Errorf("remove nat rule: %w", err)
+	}
 
-	ruleKey := firewall.GenKey(keyFormat, pair.ID)
-	rule := genRuleSpec(jump, ruleKey, pair.Source, pair.Destination)
-	existingRule, found := i.rules[ruleKey]
-	if found {
-		err = i.iptablesClient.DeleteIfExists(table, chain, existingRule...)
-		if err != nil {
-			return fmt.Errorf("error while removing existing %s rule for %s: %v", getIptablesRuleType(table), pair.Destination, err)
+	if err := r.removeNatRule(firewall.GetInversePair(pair)); err != nil {
+		return fmt.Errorf("remove inverse nat rule: %w", err)
+	}
+
+	if err := r.removeLegacyRouteRule(pair); err != nil {
+		return fmt.Errorf("remove legacy routing rule: %w", err)
+	}
+
+	return nil
+}
+
+// addLegacyRouteRule adds a legacy routing rule for mgmt servers pre route acls
+func (r *router) addLegacyRouteRule(pair firewall.RouterPair) error {
+	ruleKey := firewall.GenKey(firewall.ForwardingFormat, pair)
+
+	if err := r.removeLegacyRouteRule(pair); err != nil {
+		return err
+	}
+
+	rule := []string{"-s", pair.Source.String(), "-d", pair.Destination.String(), "-j", routingFinalForwardJump}
+	if err := r.iptablesClient.Append(tableFilter, chainRTFWD, rule...); err != nil {
+		return fmt.Errorf("add legacy forwarding rule %s -> %s: %v", pair.Source, pair.Destination, err)
+	}
+
+	r.rules[ruleKey] = rule
+
+	return nil
+}
+
+func (r *router) removeLegacyRouteRule(pair firewall.RouterPair) error {
+	ruleKey := firewall.GenKey(firewall.ForwardingFormat, pair)
+
+	if rule, exists := r.rules[ruleKey]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableFilter, chainRTFWD, rule...); err != nil {
+			return fmt.Errorf("remove legacy forwarding rule %s -> %s: %v", pair.Source, pair.Destination, err)
 		}
-		delete(i.rules, ruleKey)
-	}
-	err = i.iptablesClient.Insert(table, chain, 1, rule...)
-	if err != nil {
-		return fmt.Errorf("error while adding new %s rule for %s: %v", getIptablesRuleType(table), pair.Destination, err)
-	}
-
-	i.rules[ruleKey] = rule
-
-	return nil
-}
-
-// RemoveRoutingRules removes an iptables rule pair from forwarding and nat chains
-func (i *routerManager) RemoveRoutingRules(pair firewall.RouterPair) error {
-	err := i.removeRoutingRule(firewall.ForwardingFormat, tableFilter, chainRTFWD, pair)
-	if err != nil {
-		return err
-	}
-
-	err = i.removeRoutingRule(firewall.InForwardingFormat, tableFilter, chainRTFWD, firewall.GetInPair(pair))
-	if err != nil {
-		return err
-	}
-
-	if !pair.Masquerade {
-		return nil
-	}
-
-	err = i.removeRoutingRule(firewall.NatFormat, tableNat, chainRTNAT, pair)
-	if err != nil {
-		return err
-	}
-
-	err = i.removeRoutingRule(firewall.InNatFormat, tableNat, chainRTNAT, firewall.GetInPair(pair))
-	if err != nil {
-		return err
+		delete(r.rules, ruleKey)
+	} else {
+		log.Debugf("legacy forwarding rule %s not found", ruleKey)
 	}
 
 	return nil
 }
 
-func (i *routerManager) removeRoutingRule(keyFormat, table, chain string, pair firewall.RouterPair) error {
-	var err error
+// GetLegacyManagement returns the current legacy management mode
+func (r *router) GetLegacyManagement() bool {
+	return r.legacyManagement
+}
 
-	ruleKey := firewall.GenKey(keyFormat, pair.ID)
-	existingRule, found := i.rules[ruleKey]
-	if found {
-		err = i.iptablesClient.DeleteIfExists(table, chain, existingRule...)
-		if err != nil {
-			return fmt.Errorf("error while removing existing %s rule for %s: %v", getIptablesRuleType(table), pair.Destination, err)
+// SetLegacyManagement sets the route manager to use legacy management mode
+func (r *router) SetLegacyManagement(isLegacy bool) {
+	r.legacyManagement = isLegacy
+}
+
+// RemoveAllLegacyRouteRules removes all legacy routing rules for mgmt servers pre route acls
+func (r *router) RemoveAllLegacyRouteRules() error {
+	var merr *multierror.Error
+	for k, rule := range r.rules {
+		if !strings.HasPrefix(k, firewall.ForwardingFormatPrefix) {
+			continue
+		}
+		if err := r.iptablesClient.DeleteIfExists(tableFilter, chainRTFWD, rule...); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove legacy forwarding rule: %v", err))
 		}
 	}
-	delete(i.rules, ruleKey)
-
-	return nil
+	return nberrors.FormatErrorOrNil(merr)
 }
 
-func (i *routerManager) RouteingFwChainName() string {
-	return chainRTFWD
-}
-
-func (i *routerManager) Reset() error {
-	err := i.cleanUpDefaultForwardRules()
-	if err != nil {
-		return err
+func (r *router) Reset() error {
+	var merr *multierror.Error
+	if err := r.cleanUpDefaultForwardRules(); err != nil {
+		merr = multierror.Append(merr, err)
 	}
-	i.rules = make(map[string][]string)
-	return nil
+	r.rules = make(map[string][]string)
+
+	if err := r.ipsetCounter.Flush(); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
 }
 
-func (i *routerManager) cleanUpDefaultForwardRules() error {
-	err := i.cleanJumpRules()
+func (r *router) cleanUpDefaultForwardRules() error {
+	err := r.cleanJumpRules()
 	if err != nil {
 		return err
 	}
 
 	log.Debug("flushing routing related tables")
-	ok, err := i.iptablesClient.ChainExists(tableFilter, chainRTFWD)
-	if err != nil {
-		log.Errorf("failed check chain %s,error: %v", chainRTFWD, err)
-		return err
-	} else if ok {
-		err = i.iptablesClient.ClearAndDeleteChain(tableFilter, chainRTFWD)
+	for _, chain := range []string{chainRTFWD, chainRTNAT} {
+		table := tableFilter
+		if chain == chainRTNAT {
+			table = tableNat
+		}
+
+		ok, err := r.iptablesClient.ChainExists(table, chain)
 		if err != nil {
-			log.Errorf("failed cleaning chain %s,error: %v", chainRTFWD, err)
+			log.Errorf("failed check chain %s, error: %v", chain, err)
 			return err
+		} else if ok {
+			err = r.iptablesClient.ClearAndDeleteChain(table, chain)
+			if err != nil {
+				log.Errorf("failed cleaning chain %s, error: %v", chain, err)
+				return err
+			}
 		}
 	}
 
-	ok, err = i.iptablesClient.ChainExists(tableNat, chainRTNAT)
-	if err != nil {
-		log.Errorf("failed check chain %s,error: %v", chainRTNAT, err)
-		return err
-	} else if ok {
-		err = i.iptablesClient.ClearAndDeleteChain(tableNat, chainRTNAT)
-		if err != nil {
-			log.Errorf("failed cleaning chain %s,error: %v", chainRTNAT, err)
-			return err
-		}
-	}
 	return nil
 }
 
-func (i *routerManager) createContainers() error {
-	if i.rules[Ipv4Forwarding] != nil {
+func (r *router) createContainers() error {
+	for _, chain := range []string{chainRTFWD, chainRTNAT} {
+		if err := r.createAndSetupChain(chain); err != nil {
+			return fmt.Errorf("create chain %s: %v", chain, err)
+		}
+	}
+
+	if err := r.insertEstablishedRule(chainRTFWD); err != nil {
+		return fmt.Errorf("insert established rule: %v", err)
+	}
+
+	return r.addJumpRules()
+}
+
+func (r *router) createAndSetupChain(chain string) error {
+	table := r.getTableForChain(chain)
+
+	if err := r.iptablesClient.NewChain(table, chain); err != nil {
+		return fmt.Errorf("failed creating chain %s, error: %v", chain, err)
+	}
+
+	return nil
+}
+
+func (r *router) getTableForChain(chain string) string {
+	if chain == chainRTNAT {
+		return tableNat
+	}
+	return tableFilter
+}
+
+func (r *router) insertEstablishedRule(chain string) error {
+	establishedRule := getConntrackEstablished()
+
+	err := r.iptablesClient.Insert(tableFilter, chain, 1, establishedRule...)
+	if err != nil {
+		return fmt.Errorf("failed to insert established rule: %v", err)
+	}
+
+	ruleKey := "established-" + chain
+	r.rules[ruleKey] = establishedRule
+
+	return nil
+}
+
+func (r *router) addJumpRules() error {
+	rule := []string{"-j", chainRTNAT}
+	err := r.iptablesClient.Insert(tableNat, chainPOSTROUTING, 1, rule...)
+	if err != nil {
+		return err
+	}
+	r.rules[ipv4Nat] = rule
+
+	return nil
+}
+
+func (r *router) cleanJumpRules() error {
+	rule, found := r.rules[ipv4Nat]
+	if found {
+		err := r.iptablesClient.DeleteIfExists(tableNat, chainPOSTROUTING, rule...)
+		if err != nil {
+			return fmt.Errorf("failed cleaning rule from chain %s, err: %v", chainPOSTROUTING, err)
+		}
+	}
+
+	return nil
+}
+
+func (r *router) addNatRule(pair firewall.RouterPair) error {
+	ruleKey := firewall.GenKey(firewall.NatFormat, pair)
+
+	if rule, exists := r.rules[ruleKey]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableNat, chainRTNAT, rule...); err != nil {
+			return fmt.Errorf("error while removing existing NAT rule for %s: %v", pair.Destination, err)
+		}
+		delete(r.rules, ruleKey)
+	}
+
+	rule := genRuleSpec(routingFinalNatJump, pair.Source, pair.Destination, r.wgIface.Name(), pair.Inverse)
+	if err := r.iptablesClient.Append(tableNat, chainRTNAT, rule...); err != nil {
+		return fmt.Errorf("error while appending new NAT rule for %s: %v", pair.Destination, err)
+	}
+
+	r.rules[ruleKey] = rule
+
+	return nil
+}
+
+func (r *router) removeNatRule(pair firewall.RouterPair) error {
+	ruleKey := firewall.GenKey(firewall.NatFormat, pair)
+
+	if rule, exists := r.rules[ruleKey]; exists {
+		if err := r.iptablesClient.DeleteIfExists(tableNat, chainRTNAT, rule...); err != nil {
+			return fmt.Errorf("error while removing existing nat rule for %s: %v", pair.Destination, err)
+		}
+
+		delete(r.rules, ruleKey)
+	} else {
+		log.Debugf("nat rule %s not found", ruleKey)
+	}
+
+	return nil
+}
+
+func genRuleSpec(jump string, source, destination netip.Prefix, intf string, inverse bool) []string {
+	intdir := "-i"
+	if inverse {
+		intdir = "-o"
+	}
+	return []string{intdir, intf, "-s", source.String(), "-d", destination.String(), "-j", jump}
+}
+
+func genRouteFilteringRuleSpec(params routeFilteringRuleParams) []string {
+	var rule []string
+
+	if params.SetName != "" {
+		rule = append(rule, "-m", "set", matchSet, params.SetName, "src")
+	} else if len(params.Sources) > 0 {
+		source := params.Sources[0]
+		rule = append(rule, "-s", source.String())
+	}
+
+	rule = append(rule, "-d", params.Destination.String())
+
+	if params.Proto != firewall.ProtocolALL {
+		rule = append(rule, "-p", strings.ToLower(string(params.Proto)))
+		rule = append(rule, applyPort("--sport", params.SPort)...)
+		rule = append(rule, applyPort("--dport", params.DPort)...)
+	}
+
+	rule = append(rule, "-j", actionToStr(params.Action))
+
+	return rule
+}
+
+func applyPort(flag string, port *firewall.Port) []string {
+	if port == nil {
 		return nil
 	}
 
-	errMSGFormat := "failed creating chain %s,error: %v"
-	err := i.createChain(tableFilter, chainRTFWD)
-	if err != nil {
-		return fmt.Errorf(errMSGFormat, chainRTFWD, err)
+	if port.IsRange && len(port.Values) == 2 {
+		return []string{flag, fmt.Sprintf("%d:%d", port.Values[0], port.Values[1])}
 	}
 
-	err = i.createChain(tableNat, chainRTNAT)
-	if err != nil {
-		return fmt.Errorf(errMSGFormat, chainRTNAT, err)
+	if len(port.Values) > 1 {
+		portList := make([]string, len(port.Values))
+		for i, p := range port.Values {
+			portList[i] = strconv.Itoa(p)
+		}
+		return []string{"-m", "multiport", flag, strings.Join(portList, ",")}
 	}
 
-	err = i.addJumpRules()
-	if err != nil {
-		return fmt.Errorf("error while creating jump rules: %v", err)
-	}
-
-	return nil
-}
-
-// addJumpRules create jump rules to send packets to NetBird chains
-func (i *routerManager) addJumpRules() error {
-	rule := []string{"-j", chainRTFWD}
-	err := i.iptablesClient.Insert(tableFilter, chainFORWARD, 1, rule...)
-	if err != nil {
-		return err
-	}
-	i.rules[Ipv4Forwarding] = rule
-
-	rule = []string{"-j", chainRTNAT}
-	err = i.iptablesClient.Insert(tableNat, chainPOSTROUTING, 1, rule...)
-	if err != nil {
-		return err
-	}
-	i.rules[ipv4Nat] = rule
-
-	return nil
-}
-
-// cleanJumpRules cleans jump rules that was sending packets to NetBird chains
-func (i *routerManager) cleanJumpRules() error {
-	var err error
-	errMSGFormat := "failed cleaning rule from chain %s,err: %v"
-	rule, found := i.rules[Ipv4Forwarding]
-	if found {
-		err = i.iptablesClient.DeleteIfExists(tableFilter, chainFORWARD, rule...)
-		if err != nil {
-			return fmt.Errorf(errMSGFormat, chainFORWARD, err)
-		}
-	}
-	rule, found = i.rules[ipv4Nat]
-	if found {
-		err = i.iptablesClient.DeleteIfExists(tableNat, chainPOSTROUTING, rule...)
-		if err != nil {
-			return fmt.Errorf(errMSGFormat, chainPOSTROUTING, err)
-		}
-	}
-
-	rules, err := i.iptablesClient.List("nat", "POSTROUTING")
-	if err != nil {
-		return fmt.Errorf("failed to list rules: %s", err)
-	}
-
-	for _, ruleString := range rules {
-		if !strings.Contains(ruleString, "NETBIRD") {
-			continue
-		}
-		rule := strings.Fields(ruleString)
-		err := i.iptablesClient.DeleteIfExists("nat", "POSTROUTING", rule[2:]...)
-		if err != nil {
-			return fmt.Errorf("failed to delete postrouting jump rule: %s", err)
-		}
-	}
-
-	rules, err = i.iptablesClient.List(tableFilter, "FORWARD")
-	if err != nil {
-		return fmt.Errorf("failed to list rules in FORWARD chain: %s", err)
-	}
-
-	for _, ruleString := range rules {
-		if !strings.Contains(ruleString, "NETBIRD") {
-			continue
-		}
-		rule := strings.Fields(ruleString)
-		err := i.iptablesClient.DeleteIfExists(tableFilter, "FORWARD", rule[2:]...)
-		if err != nil {
-			return fmt.Errorf("failed to delete FORWARD jump rule: %s", err)
-		}
-	}
-	return nil
-}
-
-func (i *routerManager) createChain(table, newChain string) error {
-	chains, err := i.iptablesClient.ListChains(table)
-	if err != nil {
-		return fmt.Errorf("couldn't get %s table chains, error: %v", table, err)
-	}
-
-	shouldCreateChain := true
-	for _, chain := range chains {
-		if chain == newChain {
-			shouldCreateChain = false
-		}
-	}
-
-	if shouldCreateChain {
-		err = i.iptablesClient.NewChain(table, newChain)
-		if err != nil {
-			return fmt.Errorf("couldn't create chain %s in %s table, error: %v", newChain, table, err)
-		}
-
-		err = i.iptablesClient.Append(table, newChain, "-j", "RETURN")
-		if err != nil {
-			return fmt.Errorf("couldn't create chain %s default rule, error: %v", newChain, err)
-		}
-
-	}
-	return nil
-}
-
-// genRuleSpec generates rule specification with comment identifier
-func genRuleSpec(jump, id, source, destination string) []string {
-	return []string{"-s", source, "-d", destination, "-j", jump, "-m", "comment", "--comment", id}
-}
-
-func getIptablesRuleType(table string) string {
-	ruleType := "forwarding"
-	if table == tableNat {
-		ruleType = "nat"
-	}
-	return ruleType
+	return []string{flag, strconv.Itoa(port.Values[0])}
 }

client/firewall/iptables/router_linux_test.go

@@ -4,11 +4,13 @@ package iptables
 
 import (
 	"context"
+	"net/netip"
 	"os/exec"
 	"testing"
 
 	"github.com/coreos/go-iptables/iptables"
 	log "github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
@@ -28,7 +30,7 @@ func TestIptablesManager_RestoreOrCreateContainers(t *testing.T) {
 	iptablesClient, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
 	require.NoError(t, err, "failed to init iptables client")
 
-	manager, err := newRouterManager(context.TODO(), iptablesClient)
+	manager, err := newRouter(context.TODO(), iptablesClient, ifaceMock)
 	require.NoError(t, err, "should return a valid iptables manager")
 
 	defer func() {
@@ -37,28 +39,22 @@ func TestIptablesManager_RestoreOrCreateContainers(t *testing.T) {
 
 	require.Len(t, manager.rules, 2, "should have created rules map")
 
-	exists, err := manager.iptablesClient.Exists(tableFilter, chainFORWARD, manager.rules[Ipv4Forwarding]...)
-	require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableFilter, chainFORWARD)
-	require.True(t, exists, "forwarding rule should exist")
-
-	exists, err = manager.iptablesClient.Exists(tableNat, chainPOSTROUTING, manager.rules[ipv4Nat]...)
+	exists, err := manager.iptablesClient.Exists(tableNat, chainPOSTROUTING, manager.rules[ipv4Nat]...)
 	require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableNat, chainPOSTROUTING)
 	require.True(t, exists, "postrouting rule should exist")
 
 	pair := firewall.RouterPair{
 		ID:          "abc",
-		Source:      "100.100.100.1/32",
-		Destination: "100.100.100.0/24",
+		Source:      netip.MustParsePrefix("100.100.100.1/32"),
+		Destination: netip.MustParsePrefix("100.100.100.0/24"),
 		Masquerade:  true,
 	}
-	forward4RuleKey := firewall.GenKey(firewall.ForwardingFormat, pair.ID)
-	forward4Rule := genRuleSpec(routingFinalForwardJump, forward4RuleKey, pair.Source, pair.Destination)
+	forward4Rule := []string{"-s", pair.Source.String(), "-d", pair.Destination.String(), "-j", routingFinalForwardJump}
 
 	err = manager.iptablesClient.Insert(tableFilter, chainRTFWD, 1, forward4Rule...)
 	require.NoError(t, err, "inserting rule should not return error")
 
-	nat4RuleKey := firewall.GenKey(firewall.NatFormat, pair.ID)
-	nat4Rule := genRuleSpec(routingFinalNatJump, nat4RuleKey, pair.Source, pair.Destination)
+	nat4Rule := genRuleSpec(routingFinalNatJump, pair.Source, pair.Destination, ifaceMock.Name(), false)
 
 	err = manager.iptablesClient.Insert(tableNat, chainRTNAT, 1, nat4Rule...)
 	require.NoError(t, err, "inserting rule should not return error")
@@ -67,7 +63,7 @@ func TestIptablesManager_RestoreOrCreateContainers(t *testing.T) {
 	require.NoError(t, err, "shouldn't return error")
 }
 
-func TestIptablesManager_InsertRoutingRules(t *testing.T) {
+func TestIptablesManager_AddNatRule(t *testing.T) {
 
 	if !isIptablesSupported() {
 		t.SkipNow()
@@ -78,7 +74,7 @@ func TestIptablesManager_InsertRoutingRules(t *testing.T) {
 			iptablesClient, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
 			require.NoError(t, err, "failed to init iptables client")
 
-			manager, err := newRouterManager(context.TODO(), iptablesClient)
+			manager, err := newRouter(context.TODO(), iptablesClient, ifaceMock)
 			require.NoError(t, err, "shouldn't return error")
 
 			defer func() {
@@ -88,35 +84,13 @@ func TestIptablesManager_InsertRoutingRules(t *testing.T) {
 				}
 			}()
 
-			err = manager.InsertRoutingRules(testCase.InputPair)
+			err = manager.AddNatRule(testCase.InputPair)
 			require.NoError(t, err, "forwarding pair should be inserted")
 
-			forwardRuleKey := firewall.GenKey(firewall.ForwardingFormat, testCase.InputPair.ID)
-			forwardRule := genRuleSpec(routingFinalForwardJump, forwardRuleKey, testCase.InputPair.Source, testCase.InputPair.Destination)
+			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair)
+			natRule := genRuleSpec(routingFinalNatJump, testCase.InputPair.Source, testCase.InputPair.Destination, ifaceMock.Name(), false)
 
-			exists, err := iptablesClient.Exists(tableFilter, chainRTFWD, forwardRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableFilter, chainRTFWD)
-			require.True(t, exists, "forwarding rule should exist")
-
-			foundRule, found := manager.rules[forwardRuleKey]
-			require.True(t, found, "forwarding rule should exist in the manager map")
-			require.Equal(t, forwardRule[:4], foundRule[:4], "stored forwarding rule should match")
-
-			inForwardRuleKey := firewall.GenKey(firewall.InForwardingFormat, testCase.InputPair.ID)
-			inForwardRule := genRuleSpec(routingFinalForwardJump, inForwardRuleKey, firewall.GetInPair(testCase.InputPair).Source, firewall.GetInPair(testCase.InputPair).Destination)
-
-			exists, err = iptablesClient.Exists(tableFilter, chainRTFWD, inForwardRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableFilter, chainRTFWD)
-			require.True(t, exists, "income forwarding rule should exist")
-
-			foundRule, found = manager.rules[inForwardRuleKey]
-			require.True(t, found, "income forwarding rule should exist in the manager map")
-			require.Equal(t, inForwardRule[:4], foundRule[:4], "stored income forwarding rule should match")
-
-			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair.ID)
-			natRule := genRuleSpec(routingFinalNatJump, natRuleKey, testCase.InputPair.Source, testCase.InputPair.Destination)
-
-			exists, err = iptablesClient.Exists(tableNat, chainRTNAT, natRule...)
+			exists, err := iptablesClient.Exists(tableNat, chainRTNAT, natRule...)
 			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableNat, chainRTNAT)
 			if testCase.InputPair.Masquerade {
 				require.True(t, exists, "nat rule should be created")
@@ -129,8 +103,8 @@ func TestIptablesManager_InsertRoutingRules(t *testing.T) {
 				require.False(t, foundNat, "nat rule should not exist in the map")
 			}
 
-			inNatRuleKey := firewall.GenKey(firewall.InNatFormat, testCase.InputPair.ID)
-			inNatRule := genRuleSpec(routingFinalNatJump, inNatRuleKey, firewall.GetInPair(testCase.InputPair).Source, firewall.GetInPair(testCase.InputPair).Destination)
+			inNatRuleKey := firewall.GenKey(firewall.NatFormat, firewall.GetInversePair(testCase.InputPair))
+			inNatRule := genRuleSpec(routingFinalNatJump, firewall.GetInversePair(testCase.InputPair).Source, firewall.GetInversePair(testCase.InputPair).Destination, ifaceMock.Name(), true)
 
 			exists, err = iptablesClient.Exists(tableNat, chainRTNAT, inNatRule...)
 			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableNat, chainRTNAT)
@@ -148,7 +122,7 @@ func TestIptablesManager_InsertRoutingRules(t *testing.T) {
 	}
 }
 
-func TestIptablesManager_RemoveRoutingRules(t *testing.T) {
+func TestIptablesManager_RemoveNatRule(t *testing.T) {
 
 	if !isIptablesSupported() {
 		t.SkipNow()
@@ -158,7 +132,7 @@ func TestIptablesManager_RemoveRoutingRules(t *testing.T) {
 		t.Run(testCase.Name, func(t *testing.T) {
 			iptablesClient, _ := iptables.NewWithProtocol(iptables.ProtocolIPv4)
 
-			manager, err := newRouterManager(context.TODO(), iptablesClient)
+			manager, err := newRouter(context.TODO(), iptablesClient, ifaceMock)
 			require.NoError(t, err, "shouldn't return error")
 			defer func() {
 				_ = manager.Reset()
@@ -166,26 +140,14 @@ func TestIptablesManager_RemoveRoutingRules(t *testing.T) {
 
 			require.NoError(t, err, "shouldn't return error")
 
-			forwardRuleKey := firewall.GenKey(firewall.ForwardingFormat, testCase.InputPair.ID)
-			forwardRule := genRuleSpec(routingFinalForwardJump, forwardRuleKey, testCase.InputPair.Source, testCase.InputPair.Destination)
-
-			err = iptablesClient.Insert(tableFilter, chainRTFWD, 1, forwardRule...)
-			require.NoError(t, err, "inserting rule should not return error")
-
-			inForwardRuleKey := firewall.GenKey(firewall.InForwardingFormat, testCase.InputPair.ID)
-			inForwardRule := genRuleSpec(routingFinalForwardJump, inForwardRuleKey, firewall.GetInPair(testCase.InputPair).Source, firewall.GetInPair(testCase.InputPair).Destination)
-
-			err = iptablesClient.Insert(tableFilter, chainRTFWD, 1, inForwardRule...)
-			require.NoError(t, err, "inserting rule should not return error")
-
-			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair.ID)
-			natRule := genRuleSpec(routingFinalNatJump, natRuleKey, testCase.InputPair.Source, testCase.InputPair.Destination)
+			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair)
+			natRule := genRuleSpec(routingFinalNatJump, testCase.InputPair.Source, testCase.InputPair.Destination, ifaceMock.Name(), false)
 
 			err = iptablesClient.Insert(tableNat, chainRTNAT, 1, natRule...)
 			require.NoError(t, err, "inserting rule should not return error")
 
-			inNatRuleKey := firewall.GenKey(firewall.InNatFormat, testCase.InputPair.ID)
-			inNatRule := genRuleSpec(routingFinalNatJump, inNatRuleKey, firewall.GetInPair(testCase.InputPair).Source, firewall.GetInPair(testCase.InputPair).Destination)
+			inNatRuleKey := firewall.GenKey(firewall.NatFormat, firewall.GetInversePair(testCase.InputPair))
+			inNatRule := genRuleSpec(routingFinalNatJump, firewall.GetInversePair(testCase.InputPair).Source, firewall.GetInversePair(testCase.InputPair).Destination, ifaceMock.Name(), true)
 
 			err = iptablesClient.Insert(tableNat, chainRTNAT, 1, inNatRule...)
 			require.NoError(t, err, "inserting rule should not return error")
@@ -193,28 +155,14 @@ func TestIptablesManager_RemoveRoutingRules(t *testing.T) {
 			err = manager.Reset()
 			require.NoError(t, err, "shouldn't return error")
 
-			err = manager.RemoveRoutingRules(testCase.InputPair)
+			err = manager.RemoveNatRule(testCase.InputPair)
 			require.NoError(t, err, "shouldn't return error")
 
-			exists, err := iptablesClient.Exists(tableFilter, chainRTFWD, forwardRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableFilter, chainRTFWD)
-			require.False(t, exists, "forwarding rule should not exist")
-
-			_, found := manager.rules[forwardRuleKey]
-			require.False(t, found, "forwarding rule should exist in the manager map")
-
-			exists, err = iptablesClient.Exists(tableFilter, chainRTFWD, inForwardRule...)
-			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableFilter, chainRTFWD)
-			require.False(t, exists, "income forwarding rule should not exist")
-
-			_, found = manager.rules[inForwardRuleKey]
-			require.False(t, found, "income forwarding rule should exist in the manager map")
-
-			exists, err = iptablesClient.Exists(tableNat, chainRTNAT, natRule...)
+			exists, err := iptablesClient.Exists(tableNat, chainRTNAT, natRule...)
 			require.NoError(t, err, "should be able to query the iptables %s table and %s chain", tableNat, chainRTNAT)
 			require.False(t, exists, "nat rule should not exist")
 
-			_, found = manager.rules[natRuleKey]
+			_, found := manager.rules[natRuleKey]
 			require.False(t, found, "nat rule should exist in the manager map")
 
 			exists, err = iptablesClient.Exists(tableNat, chainRTNAT, inNatRule...)
@@ -223,7 +171,175 @@ func TestIptablesManager_RemoveRoutingRules(t *testing.T) {
 
 			_, found = manager.rules[inNatRuleKey]
 			require.False(t, found, "income nat rule should exist in the manager map")
-
+		})
+	}
+}
+
+func TestRouter_AddRouteFiltering(t *testing.T) {
+	if !isIptablesSupported() {
+		t.Skip("iptables not supported on this system")
+	}
+
+	iptablesClient, err := iptables.NewWithProtocol(iptables.ProtocolIPv4)
+	require.NoError(t, err, "Failed to create iptables client")
+
+	r, err := newRouter(context.Background(), iptablesClient, ifaceMock)
+	require.NoError(t, err, "Failed to create router manager")
+
+	defer func() {
+		err := r.Reset()
+		require.NoError(t, err, "Failed to reset router")
+	}()
+
+	tests := []struct {
+		name        string
+		sources     []netip.Prefix
+		destination netip.Prefix
+		proto       firewall.Protocol
+		sPort       *firewall.Port
+		dPort       *firewall.Port
+		direction   firewall.RuleDirection
+		action      firewall.Action
+		expectSet   bool
+	}{
+		{
+			name:        "Basic TCP rule with single source",
+			sources:     []netip.Prefix{netip.MustParsePrefix("192.168.1.0/24")},
+			destination: netip.MustParsePrefix("10.0.0.0/24"),
+			proto:       firewall.ProtocolTCP,
+			sPort:       nil,
+			dPort:       &firewall.Port{Values: []int{80}},
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name: "UDP rule with multiple sources",
+			sources: []netip.Prefix{
+				netip.MustParsePrefix("172.16.0.0/16"),
+				netip.MustParsePrefix("192.168.0.0/16"),
+			},
+			destination: netip.MustParsePrefix("10.0.0.0/8"),
+			proto:       firewall.ProtocolUDP,
+			sPort:       &firewall.Port{Values: []int{1024, 2048}, IsRange: true},
+			dPort:       nil,
+			direction:   firewall.RuleDirectionOUT,
+			action:      firewall.ActionDrop,
+			expectSet:   true,
+		},
+		{
+			name:        "All protocols rule",
+			sources:     []netip.Prefix{netip.MustParsePrefix("10.0.0.0/8")},
+			destination: netip.MustParsePrefix("0.0.0.0/0"),
+			proto:       firewall.ProtocolALL,
+			sPort:       nil,
+			dPort:       nil,
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "ICMP rule",
+			sources:     []netip.Prefix{netip.MustParsePrefix("192.168.0.0/16")},
+			destination: netip.MustParsePrefix("10.0.0.0/8"),
+			proto:       firewall.ProtocolICMP,
+			sPort:       nil,
+			dPort:       nil,
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "TCP rule with multiple source ports",
+			sources:     []netip.Prefix{netip.MustParsePrefix("172.16.0.0/12")},
+			destination: netip.MustParsePrefix("192.168.0.0/16"),
+			proto:       firewall.ProtocolTCP,
+			sPort:       &firewall.Port{Values: []int{80, 443, 8080}},
+			dPort:       nil,
+			direction:   firewall.RuleDirectionOUT,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "UDP rule with single IP and port range",
+			sources:     []netip.Prefix{netip.MustParsePrefix("192.168.1.1/32")},
+			destination: netip.MustParsePrefix("10.0.0.0/24"),
+			proto:       firewall.ProtocolUDP,
+			sPort:       nil,
+			dPort:       &firewall.Port{Values: []int{5000, 5100}, IsRange: true},
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionDrop,
+			expectSet:   false,
+		},
+		{
+			name:        "TCP rule with source and destination ports",
+			sources:     []netip.Prefix{netip.MustParsePrefix("10.0.0.0/24")},
+			destination: netip.MustParsePrefix("172.16.0.0/16"),
+			proto:       firewall.ProtocolTCP,
+			sPort:       &firewall.Port{Values: []int{1024, 65535}, IsRange: true},
+			dPort:       &firewall.Port{Values: []int{22}},
+			direction:   firewall.RuleDirectionOUT,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "Drop all incoming traffic",
+			sources:     []netip.Prefix{netip.MustParsePrefix("0.0.0.0/0")},
+			destination: netip.MustParsePrefix("192.168.0.0/24"),
+			proto:       firewall.ProtocolALL,
+			sPort:       nil,
+			dPort:       nil,
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionDrop,
+			expectSet:   false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ruleKey, err := r.AddRouteFiltering(tt.sources, tt.destination, tt.proto, tt.sPort, tt.dPort, tt.action)
+			require.NoError(t, err, "AddRouteFiltering failed")
+
+			// Check if the rule is in the internal map
+			rule, ok := r.rules[ruleKey.GetRuleID()]
+			assert.True(t, ok, "Rule not found in internal map")
+
+			// Log the internal rule
+			t.Logf("Internal rule: %v", rule)
+
+			// Check if the rule exists in iptables
+			exists, err := iptablesClient.Exists(tableFilter, chainRTFWD, rule...)
+			assert.NoError(t, err, "Failed to check rule existence")
+			assert.True(t, exists, "Rule not found in iptables")
+
+			// Verify rule content
+			params := routeFilteringRuleParams{
+				Sources:     tt.sources,
+				Destination: tt.destination,
+				Proto:       tt.proto,
+				SPort:       tt.sPort,
+				DPort:       tt.dPort,
+				Action:      tt.action,
+				SetName:     "",
+			}
+
+			expectedRule := genRouteFilteringRuleSpec(params)
+
+			if tt.expectSet {
+				setName := firewall.GenerateSetName(tt.sources)
+				params.SetName = setName
+				expectedRule = genRouteFilteringRuleSpec(params)
+
+				// Check if the set was created
+				_, exists := r.ipsetCounter.Get(setName)
+				assert.True(t, exists, "IPSet not created")
+			}
+
+			assert.Equal(t, expectedRule, rule, "Rule content mismatch")
+
+			// Clean up
+			err = r.DeleteRouteRule(ruleKey)
+			require.NoError(t, err, "Failed to delete rule")
 		})
 	}
 }

client/firewall/manager/firewall.go

@@ -1,15 +1,21 @@
 package manager
 
 import (
+	"crypto/sha256"
+	"encoding/hex"
 	"fmt"
 	"net"
+	"net/netip"
+	"sort"
+	"strings"
+
+	log "github.com/sirupsen/logrus"
 )
 
 const (
-	NatFormat          = "netbird-nat-%s"
-	ForwardingFormat   = "netbird-fwd-%s"
-	InNatFormat        = "netbird-nat-in-%s"
-	InForwardingFormat = "netbird-fwd-in-%s"
+	ForwardingFormatPrefix = "netbird-fwd-"
+	ForwardingFormat       = "netbird-fwd-%s-%t"
+	NatFormat              = "netbird-nat-%s-%t"
 )
 
 // Rule abstraction should be implemented by each firewall manager
@@ -49,11 +55,11 @@ type Manager interface {
 	// AllowNetbird allows netbird interface traffic
 	AllowNetbird() error
 
-	// AddFiltering rule to the firewall
+	// AddPeerFiltering adds a rule to the firewall
 	//
 	// If comment argument is empty firewall manager should set
 	// rule ID as comment for the rule
-	AddFiltering(
+	AddPeerFiltering(
 		ip net.IP,
 		proto Protocol,
 		sPort *Port,
@@ -64,17 +70,25 @@ type Manager interface {
 		comment string,
 	) ([]Rule, error)
 
-	// DeleteRule from the firewall by rule definition
-	DeleteRule(rule Rule) error
+	// DeletePeerRule from the firewall by rule definition
+	DeletePeerRule(rule Rule) error
 
 	// IsServerRouteSupported returns true if the firewall supports server side routing operations
 	IsServerRouteSupported() bool
 
-	// InsertRoutingRules inserts a routing firewall rule
-	InsertRoutingRules(pair RouterPair) error
+	AddRouteFiltering(source []netip.Prefix, destination netip.Prefix, proto Protocol, sPort *Port, dPort *Port, action Action) (Rule, error)
 
-	// RemoveRoutingRules removes a routing firewall rule
-	RemoveRoutingRules(pair RouterPair) error
+	// DeleteRouteRule deletes a routing rule
+	DeleteRouteRule(rule Rule) error
+
+	// AddNatRule inserts a routing NAT rule
+	AddNatRule(pair RouterPair) error
+
+	// RemoveNatRule removes a routing NAT rule
+	RemoveNatRule(pair RouterPair) error
+
+	// SetLegacyManagement sets the legacy management mode
+	SetLegacyManagement(legacy bool) error
 
 	// Reset firewall to the default state
 	Reset() error
@@ -83,6 +97,89 @@ type Manager interface {
 	Flush() error
 }
 
-func GenKey(format string, input string) string {
-	return fmt.Sprintf(format, input)
+func GenKey(format string, pair RouterPair) string {
+	return fmt.Sprintf(format, pair.ID, pair.Inverse)
+}
+
+// LegacyManager defines the interface for legacy management operations
+type LegacyManager interface {
+	RemoveAllLegacyRouteRules() error
+	GetLegacyManagement() bool
+	SetLegacyManagement(bool)
+}
+
+// SetLegacyManagement sets the route manager to use legacy management
+func SetLegacyManagement(router LegacyManager, isLegacy bool) error {
+	oldLegacy := router.GetLegacyManagement()
+
+	if oldLegacy != isLegacy {
+		router.SetLegacyManagement(isLegacy)
+		log.Debugf("Set legacy management to %v", isLegacy)
+	}
+
+	// client reconnected to a newer mgmt, we need to clean up the legacy rules
+	if !isLegacy && oldLegacy {
+		if err := router.RemoveAllLegacyRouteRules(); err != nil {
+			return fmt.Errorf("remove legacy routing rules: %v", err)
+		}
+
+		log.Debugf("Legacy routing rules removed")
+	}
+
+	return nil
+}
+
+// GenerateSetName generates a unique name for an ipset based on the given sources.
+func GenerateSetName(sources []netip.Prefix) string {
+	// sort for consistent naming
+	sortPrefixes(sources)
+
+	var sourcesStr strings.Builder
+	for _, src := range sources {
+		sourcesStr.WriteString(src.String())
+	}
+
+	hash := sha256.Sum256([]byte(sourcesStr.String()))
+	shortHash := hex.EncodeToString(hash[:])[:8]
+
+	return fmt.Sprintf("nb-%s", shortHash)
+}
+
+// MergeIPRanges merges overlapping IP ranges and returns a slice of non-overlapping netip.Prefix
+func MergeIPRanges(prefixes []netip.Prefix) []netip.Prefix {
+	if len(prefixes) == 0 {
+		return prefixes
+	}
+
+	merged := []netip.Prefix{prefixes[0]}
+	for _, prefix := range prefixes[1:] {
+		last := merged[len(merged)-1]
+		if last.Contains(prefix.Addr()) {
+			// If the current prefix is contained within the last merged prefix, skip it
+			continue
+		}
+		if prefix.Contains(last.Addr()) {
+			// If the current prefix contains the last merged prefix, replace it
+			merged[len(merged)-1] = prefix
+		} else {
+			// Otherwise, add the current prefix to the merged list
+			merged = append(merged, prefix)
+		}
+	}
+
+	return merged
+}
+
+// sortPrefixes sorts the given slice of netip.Prefix in place.
+// It sorts first by IP address, then by prefix length (most specific to least specific).
+func sortPrefixes(prefixes []netip.Prefix) {
+	sort.Slice(prefixes, func(i, j int) bool {
+		addrCmp := prefixes[i].Addr().Compare(prefixes[j].Addr())
+		if addrCmp != 0 {
+			return addrCmp < 0
+		}
+
+		// If IP addresses are the same, compare prefix lengths (longer prefixes first)
+		return prefixes[i].Bits() > prefixes[j].Bits()
+	})
 }

client/firewall/manager/firewall_test.go

@@ -0,0 +1,192 @@
+package manager_test
+
+import (
+	"net/netip"
+	"reflect"
+	"regexp"
+	"testing"
+
+	"github.com/netbirdio/netbird/client/firewall/manager"
+)
+
+func TestGenerateSetName(t *testing.T) {
+	t.Run("Different orders result in same hash", func(t *testing.T) {
+		prefixes1 := []netip.Prefix{
+			netip.MustParsePrefix("192.168.1.0/24"),
+			netip.MustParsePrefix("10.0.0.0/8"),
+		}
+		prefixes2 := []netip.Prefix{
+			netip.MustParsePrefix("10.0.0.0/8"),
+			netip.MustParsePrefix("192.168.1.0/24"),
+		}
+
+		result1 := manager.GenerateSetName(prefixes1)
+		result2 := manager.GenerateSetName(prefixes2)
+
+		if result1 != result2 {
+			t.Errorf("Different orders produced different hashes: %s != %s", result1, result2)
+		}
+	})
+
+	t.Run("Result format is correct", func(t *testing.T) {
+		prefixes := []netip.Prefix{
+			netip.MustParsePrefix("192.168.1.0/24"),
+			netip.MustParsePrefix("10.0.0.0/8"),
+		}
+
+		result := manager.GenerateSetName(prefixes)
+
+		matched, err := regexp.MatchString(`^nb-[0-9a-f]{8}$`, result)
+		if err != nil {
+			t.Fatalf("Error matching regex: %v", err)
+		}
+		if !matched {
+			t.Errorf("Result format is incorrect: %s", result)
+		}
+	})
+
+	t.Run("Empty input produces consistent result", func(t *testing.T) {
+		result1 := manager.GenerateSetName([]netip.Prefix{})
+		result2 := manager.GenerateSetName([]netip.Prefix{})
+
+		if result1 != result2 {
+			t.Errorf("Empty input produced inconsistent results: %s != %s", result1, result2)
+		}
+	})
+
+	t.Run("IPv4 and IPv6 mixing", func(t *testing.T) {
+		prefixes1 := []netip.Prefix{
+			netip.MustParsePrefix("192.168.1.0/24"),
+			netip.MustParsePrefix("2001:db8::/32"),
+		}
+		prefixes2 := []netip.Prefix{
+			netip.MustParsePrefix("2001:db8::/32"),
+			netip.MustParsePrefix("192.168.1.0/24"),
+		}
+
+		result1 := manager.GenerateSetName(prefixes1)
+		result2 := manager.GenerateSetName(prefixes2)
+
+		if result1 != result2 {
+			t.Errorf("Different orders of IPv4 and IPv6 produced different hashes: %s != %s", result1, result2)
+		}
+	})
+}
+
+func TestMergeIPRanges(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    []netip.Prefix
+		expected []netip.Prefix
+	}{
+		{
+			name:     "Empty input",
+			input:    []netip.Prefix{},
+			expected: []netip.Prefix{},
+		},
+		{
+			name: "Single range",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+			},
+		},
+		{
+			name: "Two non-overlapping ranges",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("10.0.0.0/8"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("10.0.0.0/8"),
+			},
+		},
+		{
+			name: "One range containing another",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.0.0/16"),
+				netip.MustParsePrefix("192.168.1.0/24"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.0.0/16"),
+			},
+		},
+		{
+			name: "One range containing another (different order)",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("192.168.0.0/16"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.0.0/16"),
+			},
+		},
+		{
+			name: "Overlapping ranges",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("192.168.1.128/25"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+			},
+		},
+		{
+			name: "Overlapping ranges (different order)",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.128/25"),
+				netip.MustParsePrefix("192.168.1.0/24"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.0/24"),
+			},
+		},
+		{
+			name: "Multiple overlapping ranges",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.0.0/16"),
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("192.168.2.0/24"),
+				netip.MustParsePrefix("192.168.1.128/25"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.0.0/16"),
+			},
+		},
+		{
+			name: "Partially overlapping ranges",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("192.168.0.0/23"),
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("192.168.2.0/25"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("192.168.0.0/23"),
+				netip.MustParsePrefix("192.168.2.0/25"),
+			},
+		},
+		{
+			name: "IPv6 ranges",
+			input: []netip.Prefix{
+				netip.MustParsePrefix("2001:db8::/32"),
+				netip.MustParsePrefix("2001:db8:1::/48"),
+				netip.MustParsePrefix("2001:db8:2::/48"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("2001:db8::/32"),
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := manager.MergeIPRanges(tt.input)
+			if !reflect.DeepEqual(result, tt.expected) {
+				t.Errorf("MergeIPRanges() = %v, want %v", result, tt.expected)
+			}
+		})
+	}
+}

client/firewall/manager/routerpair.go

@@ -1,18 +1,26 @@
 package manager
 
+import (
+	"net/netip"
+
+	"github.com/netbirdio/netbird/route"
+)
+
 type RouterPair struct {
-	ID          string
-	Source      string
-	Destination string
+	ID          route.ID
+	Source      netip.Prefix
+	Destination netip.Prefix
 	Masquerade  bool
+	Inverse     bool
 }
 
-func GetInPair(pair RouterPair) RouterPair {
+func GetInversePair(pair RouterPair) RouterPair {
 	return RouterPair{
 		ID: pair.ID,
 		// invert Source/Destination
 		Source:      pair.Destination,
 		Destination: pair.Source,
 		Masquerade:  pair.Masquerade,
+		Inverse:     true,
 	}
 }

client/firewall/nftables/acl_linux.go

@@ -16,7 +16,7 @@ import (
 	"golang.org/x/sys/unix"
 
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/client/iface"
 )
 
 const (
@@ -33,9 +33,10 @@ const (
 	allowNetbirdInputRuleID = "allow Netbird incoming traffic"
 )
 
+const flushError = "flush: %w"
+
 var (
-	anyIP           = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
-	postroutingMark = []byte{0xe4, 0x7, 0x0, 0x00}
+	anyIP = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
 )
 
 type AclManager struct {
@@ -48,7 +49,6 @@ type AclManager struct {
 	chainInputRules  *nftables.Chain
 	chainOutputRules *nftables.Chain
 	chainFwFilter    *nftables.Chain
-	chainPrerouting  *nftables.Chain
 
 	ipsetStore *ipsetStore
 	rules      map[string]*Rule
@@ -64,7 +64,7 @@ type iFaceMapper interface {
 func newAclManager(table *nftables.Table, wgIface iFaceMapper, routeingFwChainName string) (*AclManager, 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
+	// and is permanent. Using same connection for both type of operations
 	// overloads netlink with high amount of rules ( > 10000)
 	sConn, err := nftables.New(nftables.AsLasting())
 	if err != nil {
@@ -90,11 +90,11 @@ func newAclManager(table *nftables.Table, wgIface iFaceMapper, routeingFwChainNa
 	return m, nil
 }
 
-// AddFiltering rule to the firewall
+// AddPeerFiltering rule to the firewall
 //
 // If comment argument is empty firewall manager should set
 // rule ID as comment for the rule
-func (m *AclManager) AddFiltering(
+func (m *AclManager) AddPeerFiltering(
 	ip net.IP,
 	proto firewall.Protocol,
 	sPort *firewall.Port,
@@ -120,20 +120,11 @@ func (m *AclManager) AddFiltering(
 	}
 
 	newRules = append(newRules, ioRule)
-	if !shouldAddToPrerouting(proto, dPort, direction) {
-		return newRules, nil
-	}
-
-	preroutingRule, err := m.addPreroutingFiltering(ipset, proto, dPort, ip)
-	if err != nil {
-		return newRules, err
-	}
-	newRules = append(newRules, preroutingRule)
 	return newRules, nil
 }
 
-// DeleteRule from the firewall by rule definition
-func (m *AclManager) DeleteRule(rule firewall.Rule) error {
+// DeletePeerRule from the firewall by rule definition
+func (m *AclManager) DeletePeerRule(rule firewall.Rule) error {
 	r, ok := rule.(*Rule)
 	if !ok {
 		return fmt.Errorf("invalid rule type")
@@ -199,8 +190,7 @@ func (m *AclManager) DeleteRule(rule firewall.Rule) error {
 	return nil
 }
 
-// createDefaultAllowRules In case if the USP firewall manager can use the native firewall manager we must to create allow rules for
-// input and output chains
+// createDefaultAllowRules creates default allow rules for the input and output chains
 func (m *AclManager) createDefaultAllowRules() error {
 	expIn := []expr.Any{
 		&expr.Payload{
@@ -214,13 +204,13 @@ func (m *AclManager) createDefaultAllowRules() error {
 			SourceRegister: 1,
 			DestRegister:   1,
 			Len:            4,
-			Mask:           []byte{0x00, 0x00, 0x00, 0x00},
-			Xor:            zeroXor,
+			Mask:           []byte{0, 0, 0, 0},
+			Xor:            []byte{0, 0, 0, 0},
 		},
 		// net address
 		&expr.Cmp{
 			Register: 1,
-			Data:     []byte{0x00, 0x00, 0x00, 0x00},
+			Data:     []byte{0, 0, 0, 0},
 		},
 		&expr.Verdict{
 			Kind: expr.VerdictAccept,
@@ -246,13 +236,13 @@ func (m *AclManager) createDefaultAllowRules() error {
 			SourceRegister: 1,
 			DestRegister:   1,
 			Len:            4,
-			Mask:           []byte{0x00, 0x00, 0x00, 0x00},
-			Xor:            zeroXor,
+			Mask:           []byte{0, 0, 0, 0},
+			Xor:            []byte{0, 0, 0, 0},
 		},
 		// net address
 		&expr.Cmp{
 			Register: 1,
-			Data:     []byte{0x00, 0x00, 0x00, 0x00},
+			Data:     []byte{0, 0, 0, 0},
 		},
 		&expr.Verdict{
 			Kind: expr.VerdictAccept,
@@ -266,10 +256,8 @@ func (m *AclManager) createDefaultAllowRules() error {
 		Exprs:    expOut,
 	})
 
-	err := m.rConn.Flush()
-	if err != nil {
-		log.Debugf("failed to create default allow rules: %s", err)
-		return err
+	if err := m.rConn.Flush(); err != nil {
+		return fmt.Errorf(flushError, err)
 	}
 	return nil
 }
@@ -290,15 +278,11 @@ func (m *AclManager) Flush() error {
 		log.Errorf("failed to refresh rule handles IPv4 output chain: %v", err)
 	}
 
-	if err := m.refreshRuleHandles(m.chainPrerouting); err != nil {
-		log.Errorf("failed to refresh rule handles IPv4 prerouting chain: %v", err)
-	}
-
 	return nil
 }
 
 func (m *AclManager) addIOFiltering(ip net.IP, proto firewall.Protocol, sPort *firewall.Port, dPort *firewall.Port, direction firewall.RuleDirection, action firewall.Action, ipset *nftables.Set, comment string) (*Rule, error) {
-	ruleId := generateRuleId(ip, sPort, dPort, direction, action, ipset)
+	ruleId := generatePeerRuleId(ip, sPort, dPort, direction, action, ipset)
 	if r, ok := m.rules[ruleId]; ok {
 		return &Rule{
 			r.nftRule,
@@ -308,18 +292,7 @@ func (m *AclManager) addIOFiltering(ip net.IP, proto firewall.Protocol, sPort *f
 		}, nil
 	}
 
-	ifaceKey := expr.MetaKeyIIFNAME
-	if direction == firewall.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()),
-		},
-	}
+	var expressions []expr.Any
 
 	if proto != firewall.ProtocolALL {
 		expressions = append(expressions, &expr.Payload{
@@ -329,21 +302,15 @@ func (m *AclManager) addIOFiltering(ip net.IP, proto firewall.Protocol, sPort *f
 			Len:          uint32(1),
 		})
 
-		var protoData []byte
-		switch proto {
-		case firewall.ProtocolTCP:
-			protoData = []byte{unix.IPPROTO_TCP}
-		case firewall.ProtocolUDP:
-			protoData = []byte{unix.IPPROTO_UDP}
-		case firewall.ProtocolICMP:
-			protoData = []byte{unix.IPPROTO_ICMP}
-		default:
-			return nil, fmt.Errorf("unsupported protocol: %s", proto)
+		protoData, err := protoToInt(proto)
+		if err != nil {
+			return nil, fmt.Errorf("convert protocol to number: %v", err)
 		}
+
 		expressions = append(expressions, &expr.Cmp{
 			Register: 1,
 			Op:       expr.CmpOpEq,
-			Data:     protoData,
+			Data:     []byte{protoData},
 		})
 	}
 
@@ -432,10 +399,9 @@ func (m *AclManager) addIOFiltering(ip net.IP, proto firewall.Protocol, sPort *f
 	} else {
 		chain = m.chainOutputRules
 	}
-	nftRule := m.rConn.InsertRule(&nftables.Rule{
+	nftRule := m.rConn.AddRule(&nftables.Rule{
 		Table:    m.workTable,
 		Chain:    chain,
-		Position: 0,
 		Exprs:    expressions,
 		UserData: userData,
 	})
@@ -453,139 +419,13 @@ func (m *AclManager) addIOFiltering(ip net.IP, proto firewall.Protocol, sPort *f
 	return rule, nil
 }
 
-func (m *AclManager) addPreroutingFiltering(ipset *nftables.Set, proto firewall.Protocol, port *firewall.Port, ip net.IP) (*Rule, error) {
-	var protoData []byte
-	switch proto {
-	case firewall.ProtocolTCP:
-		protoData = []byte{unix.IPPROTO_TCP}
-	case firewall.ProtocolUDP:
-		protoData = []byte{unix.IPPROTO_UDP}
-	case firewall.ProtocolICMP:
-		protoData = []byte{unix.IPPROTO_ICMP}
-	default:
-		return nil, fmt.Errorf("unsupported protocol: %s", proto)
-	}
-
-	ruleId := generateRuleIdForMangle(ipset, ip, proto, port)
-	if r, ok := m.rules[ruleId]; ok {
-		return &Rule{
-			r.nftRule,
-			r.nftSet,
-			r.ruleID,
-			ip,
-		}, nil
-	}
-
-	var ipExpression expr.Any
-	// add individual IP for match if no ipset defined
-	rawIP := ip.To4()
-	if ipset == nil {
-		ipExpression = &expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     rawIP,
-		}
-	} else {
-		ipExpression = &expr.Lookup{
-			SourceRegister: 1,
-			SetName:        ipset.Name,
-			SetID:          ipset.ID,
-		}
-	}
-
-	expressions := []expr.Any{
-		&expr.Payload{
-			DestRegister: 1,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       12,
-			Len:          4,
-		},
-		ipExpression,
-		&expr.Payload{
-			DestRegister: 1,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       16,
-			Len:          4,
-		},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     m.wgIface.Address().IP.To4(),
-		},
-		&expr.Payload{
-			DestRegister: 1,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       uint32(9),
-			Len:          uint32(1),
-		},
-		&expr.Cmp{
-			Register: 1,
-			Op:       expr.CmpOpEq,
-			Data:     protoData,
-		},
-	}
-
-	if port != nil {
-		expressions = append(expressions,
-			&expr.Payload{
-				DestRegister: 1,
-				Base:         expr.PayloadBaseTransportHeader,
-				Offset:       2,
-				Len:          2,
-			},
-			&expr.Cmp{
-				Op:       expr.CmpOpEq,
-				Register: 1,
-				Data:     encodePort(*port),
-			},
-		)
-	}
-
-	expressions = append(expressions,
-		&expr.Immediate{
-			Register: 1,
-			Data:     postroutingMark,
-		},
-		&expr.Meta{
-			Key:            expr.MetaKeyMARK,
-			SourceRegister: true,
-			Register:       1,
-		},
-	)
-
-	nftRule := m.rConn.InsertRule(&nftables.Rule{
-		Table:    m.workTable,
-		Chain:    m.chainPrerouting,
-		Position: 0,
-		Exprs:    expressions,
-		UserData: []byte(ruleId),
-	})
-
-	if err := m.rConn.Flush(); err != nil {
-		return nil, fmt.Errorf("flush insert rule: %v", err)
-	}
-
-	rule := &Rule{
-		nftRule: nftRule,
-		nftSet:  ipset,
-		ruleID:  ruleId,
-		ip:      ip,
-	}
-
-	m.rules[ruleId] = rule
-	if ipset != nil {
-		m.ipsetStore.AddReferenceToIpset(ipset.Name)
-	}
-	return rule, nil
-}
-
 func (m *AclManager) createDefaultChains() (err error) {
 	// chainNameInputRules
 	chain := m.createChain(chainNameInputRules)
 	err = m.rConn.Flush()
 	if err != nil {
 		log.Debugf("failed to create chain (%s): %s", chain.Name, err)
-		return err
+		return fmt.Errorf(flushError, err)
 	}
 	m.chainInputRules = chain
 
@@ -601,9 +441,6 @@ func (m *AclManager) createDefaultChains() (err error) {
 	// netbird-acl-input-filter
 	// type filter hook input priority filter; policy accept;
 	chain = m.createFilterChainWithHook(chainNameInputFilter, nftables.ChainHookInput)
-	//netbird-acl-input-filter iifname "wt0" ip saddr 100.72.0.0/16 ip daddr != 100.72.0.0/16 accept
-	m.addRouteAllowRule(chain, expr.MetaKeyIIFNAME)
-	m.addFwdAllow(chain, expr.MetaKeyIIFNAME)
 	m.addJumpRule(chain, m.chainInputRules.Name, expr.MetaKeyIIFNAME) // to netbird-acl-input-rules
 	m.addDropExpressions(chain, expr.MetaKeyIIFNAME)
 	err = m.rConn.Flush()
@@ -615,7 +452,6 @@ func (m *AclManager) createDefaultChains() (err error) {
 	// netbird-acl-output-filter
 	// type filter hook output priority filter; policy accept;
 	chain = m.createFilterChainWithHook(chainNameOutputFilter, nftables.ChainHookOutput)
-	m.addRouteAllowRule(chain, expr.MetaKeyOIFNAME)
 	m.addFwdAllow(chain, expr.MetaKeyOIFNAME)
 	m.addJumpRule(chain, m.chainOutputRules.Name, expr.MetaKeyOIFNAME) // to netbird-acl-output-rules
 	m.addDropExpressions(chain, expr.MetaKeyOIFNAME)
@@ -627,24 +463,15 @@ func (m *AclManager) createDefaultChains() (err error) {
 
 	// netbird-acl-forward-filter
 	m.chainFwFilter = m.createFilterChainWithHook(chainNameForwardFilter, nftables.ChainHookForward)
-	m.addJumpRulesToRtForward() // to
-	m.addMarkAccept()
-	m.addJumpRuleToInputChain() // to netbird-acl-input-rules
+	m.addJumpRulesToRtForward() // to netbird-rt-fwd
 	m.addDropExpressions(m.chainFwFilter, expr.MetaKeyIIFNAME)
+
 	err = m.rConn.Flush()
 	if err != nil {
 		log.Debugf("failed to create chain (%s): %s", chainNameForwardFilter, err)
-		return err
+		return fmt.Errorf(flushError, err)
 	}
 
-	// netbird-acl-output-filter
-	// type filter hook output priority filter; policy accept;
-	m.chainPrerouting = m.createPreroutingMangle()
-	err = m.rConn.Flush()
-	if err != nil {
-		log.Debugf("failed to create chain (%s): %s", m.chainPrerouting.Name, err)
-		return err
-	}
 	return nil
 }
 
@@ -667,59 +494,6 @@ func (m *AclManager) addJumpRulesToRtForward() {
 		Chain: m.chainFwFilter,
 		Exprs: expressions,
 	})
-
-	expressions = []expr.Any{
-		&expr.Meta{Key: expr.MetaKeyOIFNAME, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Verdict{
-			Kind:  expr.VerdictJump,
-			Chain: m.routeingFwChainName,
-		},
-	}
-
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: m.workTable,
-		Chain: m.chainFwFilter,
-		Exprs: expressions,
-	})
-}
-
-func (m *AclManager) addMarkAccept() {
-	// oifname "wt0" meta mark 0x000007e4 accept
-	// iifname "wt0" meta mark 0x000007e4 accept
-	ifaces := []expr.MetaKey{expr.MetaKeyIIFNAME, expr.MetaKeyOIFNAME}
-	for _, iface := range ifaces {
-		expressions := []expr.Any{
-			&expr.Meta{Key: iface, Register: 1},
-			&expr.Cmp{
-				Op:       expr.CmpOpEq,
-				Register: 1,
-				Data:     ifname(m.wgIface.Name()),
-			},
-			&expr.Meta{
-				Key:      expr.MetaKeyMARK,
-				Register: 1,
-			},
-			&expr.Cmp{
-				Op:       expr.CmpOpEq,
-				Register: 1,
-				Data:     postroutingMark,
-			},
-			&expr.Verdict{
-				Kind: expr.VerdictAccept,
-			},
-		}
-
-		_ = m.rConn.AddRule(&nftables.Rule{
-			Table: m.workTable,
-			Chain: m.chainFwFilter,
-			Exprs: expressions,
-		})
-	}
 }
 
 func (m *AclManager) createChain(name string) *nftables.Chain {
@@ -729,6 +503,9 @@ func (m *AclManager) createChain(name string) *nftables.Chain {
 	}
 
 	chain = m.rConn.AddChain(chain)
+
+	insertReturnTrafficRule(m.rConn, m.workTable, chain)
+
 	return chain
 }
 
@@ -746,74 +523,6 @@ func (m *AclManager) createFilterChainWithHook(name string, hookNum nftables.Cha
 	return m.rConn.AddChain(chain)
 }
 
-func (m *AclManager) createPreroutingMangle() *nftables.Chain {
-	polAccept := nftables.ChainPolicyAccept
-	chain := &nftables.Chain{
-		Name:     "netbird-acl-prerouting-filter",
-		Table:    m.workTable,
-		Hooknum:  nftables.ChainHookPrerouting,
-		Priority: nftables.ChainPriorityMangle,
-		Type:     nftables.ChainTypeFilter,
-		Policy:   &polAccept,
-	}
-
-	chain = m.rConn.AddChain(chain)
-
-	ip, _ := netip.AddrFromSlice(m.wgIface.Address().Network.IP.To4())
-	expressions := []expr.Any{
-		&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Payload{
-			DestRegister: 2,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       12,
-			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.Payload{
-			DestRegister: 1,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       16,
-			Len:          4,
-		},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     m.wgIface.Address().IP.To4(),
-		},
-		&expr.Immediate{
-			Register: 1,
-			Data:     postroutingMark,
-		},
-		&expr.Meta{
-			Key:            expr.MetaKeyMARK,
-			SourceRegister: true,
-			Register:       1,
-		},
-	}
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: m.workTable,
-		Chain: chain,
-		Exprs: expressions,
-	})
-	return chain
-}
-
 func (m *AclManager) addDropExpressions(chain *nftables.Chain, ifaceKey expr.MetaKey) []expr.Any {
 	expressions := []expr.Any{
 		&expr.Meta{Key: ifaceKey, Register: 1},
@@ -832,101 +541,9 @@ func (m *AclManager) addDropExpressions(chain *nftables.Chain, ifaceKey expr.Met
 	return nil
 }
 
-func (m *AclManager) addJumpRuleToInputChain() {
-	expressions := []expr.Any{
-		&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Verdict{
-			Kind:  expr.VerdictJump,
-			Chain: m.chainInputRules.Name,
-		},
-	}
-
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: m.workTable,
-		Chain: m.chainFwFilter,
-		Exprs: expressions,
-	})
-}
-
-func (m *AclManager) addRouteAllowRule(chain *nftables.Chain, netIfName expr.MetaKey) {
-	ip, _ := netip.AddrFromSlice(m.wgIface.Address().Network.IP.To4())
-	var srcOp, dstOp expr.CmpOp
-	if netIfName == expr.MetaKeyIIFNAME {
-		srcOp = expr.CmpOpEq
-		dstOp = expr.CmpOpNeq
-	} else {
-		srcOp = expr.CmpOpNeq
-		dstOp = expr.CmpOpEq
-	}
-	expressions := []expr.Any{
-		&expr.Meta{Key: netIfName, Register: 1},
-		&expr.Cmp{
-			Op:       expr.CmpOpEq,
-			Register: 1,
-			Data:     ifname(m.wgIface.Name()),
-		},
-		&expr.Payload{
-			DestRegister: 2,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       12,
-			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:       srcOp,
-			Register: 2,
-			Data:     ip.Unmap().AsSlice(),
-		},
-		&expr.Payload{
-			DestRegister: 2,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       16,
-			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:       dstOp,
-			Register: 2,
-			Data:     ip.Unmap().AsSlice(),
-		},
-		&expr.Verdict{
-			Kind: expr.VerdictAccept,
-		},
-	}
-	_ = m.rConn.AddRule(&nftables.Rule{
-		Table: chain.Table,
-		Chain: chain,
-		Exprs: expressions,
-	})
-}
-
 func (m *AclManager) addFwdAllow(chain *nftables.Chain, iifname expr.MetaKey) {
 	ip, _ := netip.AddrFromSlice(m.wgIface.Address().Network.IP.To4())
-	var srcOp, dstOp expr.CmpOp
-	if iifname == expr.MetaKeyIIFNAME {
-		srcOp = expr.CmpOpNeq
-		dstOp = expr.CmpOpEq
-	} else {
-		srcOp = expr.CmpOpEq
-		dstOp = expr.CmpOpNeq
-	}
+	dstOp := expr.CmpOpNeq
 	expressions := []expr.Any{
 		&expr.Meta{Key: iifname, Register: 1},
 		&expr.Cmp{
@@ -934,24 +551,6 @@ func (m *AclManager) addFwdAllow(chain *nftables.Chain, iifname expr.MetaKey) {
 			Register: 1,
 			Data:     ifname(m.wgIface.Name()),
 		},
-		&expr.Payload{
-			DestRegister: 2,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       12,
-			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:       srcOp,
-			Register: 2,
-			Data:     ip.Unmap().AsSlice(),
-		},
 		&expr.Payload{
 			DestRegister: 2,
 			Base:         expr.PayloadBaseNetworkHeader,
@@ -982,7 +581,6 @@ func (m *AclManager) addFwdAllow(chain *nftables.Chain, iifname expr.MetaKey) {
 }
 
 func (m *AclManager) addJumpRule(chain *nftables.Chain, to string, ifaceKey expr.MetaKey) {
-	ip, _ := netip.AddrFromSlice(m.wgIface.Address().Network.IP.To4())
 	expressions := []expr.Any{
 		&expr.Meta{Key: ifaceKey, Register: 1},
 		&expr.Cmp{
@@ -990,47 +588,12 @@ func (m *AclManager) addJumpRule(chain *nftables.Chain, to string, ifaceKey expr
 			Register: 1,
 			Data:     ifname(m.wgIface.Name()),
 		},
-		&expr.Payload{
-			DestRegister: 2,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       12,
-			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.CmpOpEq,
-			Register: 2,
-			Data:     ip.Unmap().AsSlice(),
-		},
-		&expr.Payload{
-			DestRegister: 2,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       16,
-			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.CmpOpEq,
-			Register: 2,
-			Data:     ip.Unmap().AsSlice(),
-		},
 		&expr.Verdict{
 			Kind:  expr.VerdictJump,
 			Chain: to,
 		},
 	}
+
 	_ = m.rConn.AddRule(&nftables.Rule{
 		Table: chain.Table,
 		Chain: chain,
@@ -1132,7 +695,7 @@ func (m *AclManager) refreshRuleHandles(chain *nftables.Chain) error {
 	return nil
 }
 
-func generateRuleId(
+func generatePeerRuleId(
 	ip net.IP,
 	sPort *firewall.Port,
 	dPort *firewall.Port,
@@ -1155,33 +718,6 @@ func generateRuleId(
 	}
 	return "set:" + ipset.Name + rulesetID
 }
-func generateRuleIdForMangle(ipset *nftables.Set, ip net.IP, proto firewall.Protocol, port *firewall.Port) string {
-	// case of icmp port is empty
-	var p string
-	if port != nil {
-		p = port.String()
-	}
-	if ipset != nil {
-		return fmt.Sprintf("p:set:%s:%s:%v", ipset.Name, proto, p)
-	} else {
-		return fmt.Sprintf("p:ip:%s:%s:%v", ip.String(), proto, p)
-	}
-}
-
-func shouldAddToPrerouting(proto firewall.Protocol, dPort *firewall.Port, direction firewall.RuleDirection) bool {
-	if proto == "all" {
-		return false
-	}
-
-	if direction != firewall.RuleDirectionIN {
-		return false
-	}
-
-	if dPort == nil && proto != firewall.ProtocolICMP {
-		return false
-	}
-	return true
-}
 
 func encodePort(port firewall.Port) []byte {
 	bs := make([]byte, 2)
@@ -1191,6 +727,19 @@ func encodePort(port firewall.Port) []byte {
 
 func ifname(n string) []byte {
 	b := make([]byte, 16)
-	copy(b, []byte(n+"\x00"))
+	copy(b, n+"\x00")
 	return b
 }
+
+func protoToInt(protocol firewall.Protocol) (uint8, error) {
+	switch protocol {
+	case firewall.ProtocolTCP:
+		return unix.IPPROTO_TCP, nil
+	case firewall.ProtocolUDP:
+		return unix.IPPROTO_UDP, nil
+	case firewall.ProtocolICMP:
+		return unix.IPPROTO_ICMP, nil
+	}
+
+	return 0, fmt.Errorf("unsupported protocol: %s", protocol)
+}

client/firewall/nftables/manager_linux.go

@@ -5,9 +5,11 @@ import (
 	"context"
 	"fmt"
 	"net"
+	"net/netip"
 	"sync"
 
 	"github.com/google/nftables"
+	"github.com/google/nftables/binaryutil"
 	"github.com/google/nftables/expr"
 	log "github.com/sirupsen/logrus"
 
@@ -15,8 +17,11 @@ import (
 )
 
 const (
-	// tableName is the name of the table that is used for filtering by the Netbird client
-	tableName = "netbird"
+	// tableNameNetbird is the name of the table that is used for filtering by the Netbird client
+	tableNameNetbird = "netbird"
+
+	tableNameFilter = "filter"
+	chainNameInput  = "INPUT"
 )
 
 // Manager of iptables firewall
@@ -41,12 +46,12 @@ func Create(context context.Context, wgIface iFaceMapper) (*Manager, error) {
 		return nil, err
 	}
 
-	m.router, err = newRouter(context, workTable)
+	m.router, err = newRouter(context, workTable, wgIface)
 	if err != nil {
 		return nil, err
 	}
 
-	m.aclManager, err = newAclManager(workTable, wgIface, m.router.RouteingFwChainName())
+	m.aclManager, err = newAclManager(workTable, wgIface, chainNameRoutingFw)
 	if err != nil {
 		return nil, err
 	}
@@ -54,11 +59,11 @@ func Create(context context.Context, wgIface iFaceMapper) (*Manager, error) {
 	return m, nil
 }
 
-// AddFiltering rule to the firewall
+// AddPeerFiltering rule to the firewall
 //
 // If comment argument is empty firewall manager should set
 // rule ID as comment for the rule
-func (m *Manager) AddFiltering(
+func (m *Manager) AddPeerFiltering(
 	ip net.IP,
 	proto firewall.Protocol,
 	sPort *firewall.Port,
@@ -76,33 +81,52 @@ func (m *Manager) AddFiltering(
 		return nil, fmt.Errorf("unsupported IP version: %s", ip.String())
 	}
 
-	return m.aclManager.AddFiltering(ip, proto, sPort, dPort, direction, action, ipsetName, comment)
+	return m.aclManager.AddPeerFiltering(ip, proto, sPort, dPort, direction, action, ipsetName, comment)
 }
 
-// DeleteRule from the firewall by rule definition
-func (m *Manager) DeleteRule(rule firewall.Rule) error {
+func (m *Manager) AddRouteFiltering(sources []netip.Prefix, destination netip.Prefix, proto firewall.Protocol, sPort *firewall.Port, dPort *firewall.Port, action firewall.Action) (firewall.Rule, error) {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.aclManager.DeleteRule(rule)
+	if !destination.Addr().Is4() {
+		return nil, fmt.Errorf("unsupported IP version: %s", destination.Addr().String())
+	}
+
+	return m.router.AddRouteFiltering(sources, destination, proto, sPort, dPort, action)
+}
+
+// DeletePeerRule from the firewall by rule definition
+func (m *Manager) DeletePeerRule(rule firewall.Rule) error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	return m.aclManager.DeletePeerRule(rule)
+}
+
+// DeleteRouteRule deletes a routing rule
+func (m *Manager) DeleteRouteRule(rule firewall.Rule) error {
+	m.mutex.Lock()
+	defer m.mutex.Unlock()
+
+	return m.router.DeleteRouteRule(rule)
 }
 
 func (m *Manager) IsServerRouteSupported() bool {
 	return true
 }
 
-func (m *Manager) InsertRoutingRules(pair firewall.RouterPair) error {
+func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.router.InsertRoutingRules(pair)
+	return m.router.AddNatRule(pair)
 }
 
-func (m *Manager) RemoveRoutingRules(pair firewall.RouterPair) error {
+func (m *Manager) RemoveNatRule(pair firewall.RouterPair) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
-	return m.router.RemoveRoutingRules(pair)
+	return m.router.RemoveNatRule(pair)
 }
 
 // AllowNetbird allows netbird interface traffic
@@ -126,7 +150,7 @@ func (m *Manager) AllowNetbird() error {
 
 	var chain *nftables.Chain
 	for _, c := range chains {
-		if c.Table.Name == "filter" && c.Name == "INPUT" {
+		if c.Table.Name == tableNameFilter && c.Name == chainNameForward {
 			chain = c
 			break
 		}
@@ -157,6 +181,27 @@ func (m *Manager) AllowNetbird() error {
 	return nil
 }
 
+// SetLegacyManagement sets the route manager to use legacy management
+func (m *Manager) SetLegacyManagement(isLegacy bool) error {
+	oldLegacy := m.router.legacyManagement
+
+	if oldLegacy != isLegacy {
+		m.router.legacyManagement = isLegacy
+		log.Debugf("Set legacy management to %v", isLegacy)
+	}
+
+	// client reconnected to a newer mgmt, we need to cleanup the legacy rules
+	if !isLegacy && oldLegacy {
+		if err := m.router.RemoveAllLegacyRouteRules(); err != nil {
+			return fmt.Errorf("remove legacy routing rules: %v", err)
+		}
+
+		log.Debugf("Legacy routing rules removed")
+	}
+
+	return nil
+}
+
 // Reset firewall to the default state
 func (m *Manager) Reset() error {
 	m.mutex.Lock()
@@ -185,14 +230,16 @@ func (m *Manager) Reset() error {
 		}
 	}
 
-	m.router.ResetForwardRules()
+	if err := m.router.Reset(); err != nil {
+		return fmt.Errorf("reset forward rules: %v", err)
+	}
 
 	tables, err := m.rConn.ListTables()
 	if err != nil {
 		return fmt.Errorf("list of tables: %w", err)
 	}
 	for _, t := range tables {
-		if t.Name == tableName {
+		if t.Name == tableNameNetbird {
 			m.rConn.DelTable(t)
 		}
 	}
@@ -218,12 +265,12 @@ func (m *Manager) createWorkTable() (*nftables.Table, error) {
 	}
 
 	for _, t := range tables {
-		if t.Name == tableName {
+		if t.Name == tableNameNetbird {
 			m.rConn.DelTable(t)
 		}
 	}
 
-	table := m.rConn.AddTable(&nftables.Table{Name: tableName, Family: nftables.TableFamilyIPv4})
+	table := m.rConn.AddTable(&nftables.Table{Name: tableNameNetbird, Family: nftables.TableFamilyIPv4})
 	err = m.rConn.Flush()
 	return table, err
 }
@@ -239,9 +286,7 @@ func (m *Manager) applyAllowNetbirdRules(chain *nftables.Chain) {
 				Register: 1,
 				Data:     ifname(m.wgIface.Name()),
 			},
-			&expr.Verdict{
-				Kind: expr.VerdictAccept,
-			},
+			&expr.Verdict{},
 		},
 		UserData: []byte(allowNetbirdInputRuleID),
 	}
@@ -251,7 +296,7 @@ func (m *Manager) applyAllowNetbirdRules(chain *nftables.Chain) {
 func (m *Manager) detectAllowNetbirdRule(existedRules []*nftables.Rule) *nftables.Rule {
 	ifName := ifname(m.wgIface.Name())
 	for _, rule := range existedRules {
-		if rule.Table.Name == "filter" && rule.Chain.Name == "INPUT" {
+		if rule.Table.Name == tableNameFilter && rule.Chain.Name == chainNameInput {
 			if len(rule.Exprs) < 4 {
 				if e, ok := rule.Exprs[0].(*expr.Meta); !ok || e.Key != expr.MetaKeyIIFNAME {
 					continue
@@ -265,3 +310,33 @@ func (m *Manager) detectAllowNetbirdRule(existedRules []*nftables.Rule) *nftable
 	}
 	return nil
 }
+
+func insertReturnTrafficRule(conn *nftables.Conn, table *nftables.Table, chain *nftables.Chain) {
+	rule := &nftables.Rule{
+		Table: table,
+		Chain: chain,
+		Exprs: []expr.Any{
+			&expr.Ct{
+				Key:      expr.CtKeySTATE,
+				Register: 1,
+			},
+			&expr.Bitwise{
+				SourceRegister: 1,
+				DestRegister:   1,
+				Len:            4,
+				Mask:           binaryutil.NativeEndian.PutUint32(expr.CtStateBitESTABLISHED | expr.CtStateBitRELATED),
+				Xor:            binaryutil.NativeEndian.PutUint32(0),
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpNeq,
+				Register: 1,
+				Data:     []byte{0, 0, 0, 0},
+			},
+			&expr.Verdict{
+				Kind: expr.VerdictAccept,
+			},
+		},
+	}
+
+	conn.InsertRule(rule)
+}

client/firewall/nftables/manager_linux_test.go

@@ -9,14 +9,30 @@ import (
 	"time"
 
 	"github.com/google/nftables"
+	"github.com/google/nftables/binaryutil"
 	"github.com/google/nftables/expr"
 	"github.com/stretchr/testify/require"
 	"golang.org/x/sys/unix"
 
 	fw "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/client/iface"
 )
 
+var ifaceMock = &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),
+			},
+		}
+	},
+}
+
 // iFaceMapper defines subset methods of interface required for manager
 type iFaceMock struct {
 	NameFunc    func() string
@@ -40,23 +56,9 @@ func (i *iFaceMock) Address() iface.WGAddress {
 func (i *iFaceMock) IsUserspaceBind() bool { return false }
 
 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(context.Background(), mock)
+	manager, err := Create(context.Background(), ifaceMock)
 	require.NoError(t, err)
 	time.Sleep(time.Second * 3)
 
@@ -70,7 +72,7 @@ func TestNftablesManager(t *testing.T) {
 
 	testClient := &nftables.Conn{}
 
-	rule, err := manager.AddFiltering(
+	rule, err := manager.AddPeerFiltering(
 		ip,
 		fw.ProtocolTCP,
 		nil,
@@ -88,17 +90,34 @@ func TestNftablesManager(t *testing.T) {
 	rules, err := testClient.GetRules(manager.aclManager.workTable, manager.aclManager.chainInputRules)
 	require.NoError(t, err, "failed to get rules")
 
-	require.Len(t, rules, 1, "expected 1 rules")
+	require.Len(t, rules, 2, "expected 2 rules")
+
+	expectedExprs1 := []expr.Any{
+		&expr.Ct{
+			Key:      expr.CtKeySTATE,
+			Register: 1,
+		},
+		&expr.Bitwise{
+			SourceRegister: 1,
+			DestRegister:   1,
+			Len:            4,
+			Mask:           binaryutil.NativeEndian.PutUint32(expr.CtStateBitESTABLISHED | expr.CtStateBitRELATED),
+			Xor:            binaryutil.NativeEndian.PutUint32(0),
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpNeq,
+			Register: 1,
+			Data:     []byte{0, 0, 0, 0},
+		},
+		&expr.Verdict{
+			Kind: expr.VerdictAccept,
+		},
+	}
+	require.ElementsMatch(t, rules[0].Exprs, expectedExprs1, "expected the same expressions")
 
 	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"),
-		},
+	expectedExprs2 := []expr.Any{
 		&expr.Payload{
 			DestRegister: 1,
 			Base:         expr.PayloadBaseNetworkHeader,
@@ -134,10 +153,10 @@ func TestNftablesManager(t *testing.T) {
 		},
 		&expr.Verdict{Kind: expr.VerdictDrop},
 	}
-	require.ElementsMatch(t, rules[0].Exprs, expectedExprs, "expected the same expressions")
+	require.ElementsMatch(t, rules[1].Exprs, expectedExprs2, "expected the same expressions")
 
 	for _, r := range rule {
-		err = manager.DeleteRule(r)
+		err = manager.DeletePeerRule(r)
 		require.NoError(t, err, "failed to delete rule")
 	}
 
@@ -146,7 +165,8 @@ func TestNftablesManager(t *testing.T) {
 
 	rules, err = testClient.GetRules(manager.aclManager.workTable, manager.aclManager.chainInputRules)
 	require.NoError(t, err, "failed to get rules")
-	require.Len(t, rules, 0, "expected 0 rules after deletion")
+	// established rule remains
+	require.Len(t, rules, 1, "expected 1 rules after deletion")
 
 	err = manager.Reset()
 	require.NoError(t, err, "failed to reset")
@@ -187,9 +207,9 @@ func TestNFtablesCreatePerformance(t *testing.T) {
 			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")
+					_, err = manager.AddPeerFiltering(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")
+					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
 				}
 				require.NoError(t, err, "failed to add rule")
 

client/firewall/nftables/route_linux.go

@@ -1,413 +0,0 @@
-package nftables
-
-import (
-	"bytes"
-	"context"
-	"errors"
-	"fmt"
-	"net"
-	"net/netip"
-
-	"github.com/google/nftables"
-	"github.com/google/nftables/binaryutil"
-	"github.com/google/nftables/expr"
-	log "github.com/sirupsen/logrus"
-
-	"github.com/netbirdio/netbird/client/firewall/manager"
-)
-
-const (
-	chainNameRouteingFw = "netbird-rt-fwd"
-	chainNameRoutingNat = "netbird-rt-nat"
-
-	userDataAcceptForwardRuleSrc = "frwacceptsrc"
-	userDataAcceptForwardRuleDst = "frwacceptdst"
-)
-
-// some presets for building nftable rules
-var (
-	zeroXor = binaryutil.NativeEndian.PutUint32(0)
-
-	exprCounterAccept = []expr.Any{
-		&expr.Counter{},
-		&expr.Verdict{
-			Kind: expr.VerdictAccept,
-		},
-	}
-
-	errFilterTableNotFound = fmt.Errorf("nftables: 'filter' table not found")
-)
-
-type router struct {
-	ctx         context.Context
-	stop        context.CancelFunc
-	conn        *nftables.Conn
-	workTable   *nftables.Table
-	filterTable *nftables.Table
-	chains      map[string]*nftables.Chain
-	// rules is useful to avoid duplicates and to get missing attributes that we don't have when adding new rules
-	rules                    map[string]*nftables.Rule
-	isDefaultFwdRulesEnabled bool
-}
-
-func newRouter(parentCtx context.Context, workTable *nftables.Table) (*router, error) {
-	ctx, cancel := context.WithCancel(parentCtx)
-
-	r := &router{
-		ctx:       ctx,
-		stop:      cancel,
-		conn:      &nftables.Conn{},
-		workTable: workTable,
-		chains:    make(map[string]*nftables.Chain),
-		rules:     make(map[string]*nftables.Rule),
-	}
-
-	var err error
-	r.filterTable, err = r.loadFilterTable()
-	if err != nil {
-		if errors.Is(err, errFilterTableNotFound) {
-			log.Warnf("table 'filter' not found for forward rules")
-		} else {
-			return nil, err
-		}
-	}
-
-	err = r.cleanUpDefaultForwardRules()
-	if err != nil {
-		log.Errorf("failed to clean up rules from FORWARD chain: %s", err)
-	}
-
-	err = r.createContainers()
-	if err != nil {
-		log.Errorf("failed to create containers for route: %s", err)
-	}
-	return r, err
-}
-
-func (r *router) RouteingFwChainName() string {
-	return chainNameRouteingFw
-}
-
-// ResetForwardRules cleans existing nftables default forward rules from the system
-func (r *router) ResetForwardRules() {
-	err := r.cleanUpDefaultForwardRules()
-	if err != nil {
-		log.Errorf("failed to reset forward rules: %s", err)
-	}
-}
-
-func (r *router) loadFilterTable() (*nftables.Table, error) {
-	tables, err := r.conn.ListTablesOfFamily(nftables.TableFamilyIPv4)
-	if err != nil {
-		return nil, fmt.Errorf("nftables: unable to list tables: %v", err)
-	}
-
-	for _, table := range tables {
-		if table.Name == "filter" {
-			return table, nil
-		}
-	}
-
-	return nil, errFilterTableNotFound
-}
-
-func (r *router) createContainers() error {
-
-	r.chains[chainNameRouteingFw] = r.conn.AddChain(&nftables.Chain{
-		Name:  chainNameRouteingFw,
-		Table: r.workTable,
-	})
-
-	r.chains[chainNameRoutingNat] = r.conn.AddChain(&nftables.Chain{
-		Name:     chainNameRoutingNat,
-		Table:    r.workTable,
-		Hooknum:  nftables.ChainHookPostrouting,
-		Priority: nftables.ChainPriorityNATSource - 1,
-		Type:     nftables.ChainTypeNAT,
-	})
-
-	err := r.refreshRulesMap()
-	if err != nil {
-		log.Errorf("failed to clean up rules from FORWARD chain: %s", err)
-	}
-
-	err = r.conn.Flush()
-	if err != nil {
-		return fmt.Errorf("nftables: unable to initialize table: %v", err)
-	}
-	return nil
-}
-
-// InsertRoutingRules inserts a nftable rule pair to the forwarding chain and if enabled, to the nat chain
-func (r *router) InsertRoutingRules(pair manager.RouterPair) error {
-	err := r.refreshRulesMap()
-	if err != nil {
-		return err
-	}
-
-	err = r.insertRoutingRule(manager.ForwardingFormat, chainNameRouteingFw, pair, false)
-	if err != nil {
-		return err
-	}
-	err = r.insertRoutingRule(manager.InForwardingFormat, chainNameRouteingFw, manager.GetInPair(pair), false)
-	if err != nil {
-		return err
-	}
-
-	if pair.Masquerade {
-		err = r.insertRoutingRule(manager.NatFormat, chainNameRoutingNat, pair, true)
-		if err != nil {
-			return err
-		}
-		err = r.insertRoutingRule(manager.InNatFormat, chainNameRoutingNat, manager.GetInPair(pair), true)
-		if err != nil {
-			return err
-		}
-	}
-
-	if r.filterTable != nil && !r.isDefaultFwdRulesEnabled {
-		log.Debugf("add default accept forward rule")
-		r.acceptForwardRule(pair.Source)
-	}
-
-	err = r.conn.Flush()
-	if err != nil {
-		return fmt.Errorf("nftables: unable to insert rules for %s: %v", pair.Destination, err)
-	}
-	return nil
-}
-
-// insertRoutingRule inserts a nftable rule to the conn client flush queue
-func (r *router) insertRoutingRule(format, chainName string, pair manager.RouterPair, isNat bool) error {
-	sourceExp := generateCIDRMatcherExpressions(true, pair.Source)
-	destExp := generateCIDRMatcherExpressions(false, pair.Destination)
-
-	var expression []expr.Any
-	if isNat {
-		expression = append(sourceExp, append(destExp, &expr.Counter{}, &expr.Masq{})...) // nolint:gocritic
-	} else {
-		expression = append(sourceExp, append(destExp, exprCounterAccept...)...) // nolint:gocritic
-	}
-
-	ruleKey := manager.GenKey(format, pair.ID)
-
-	_, exists := r.rules[ruleKey]
-	if exists {
-		err := r.removeRoutingRule(format, pair)
-		if err != nil {
-			return err
-		}
-	}
-
-	r.rules[ruleKey] = r.conn.InsertRule(&nftables.Rule{
-		Table:    r.workTable,
-		Chain:    r.chains[chainName],
-		Exprs:    expression,
-		UserData: []byte(ruleKey),
-	})
-	return nil
-}
-
-func (r *router) acceptForwardRule(sourceNetwork string) {
-	src := generateCIDRMatcherExpressions(true, sourceNetwork)
-	dst := generateCIDRMatcherExpressions(false, "0.0.0.0/0")
-
-	var exprs []expr.Any
-	exprs = append(src, append(dst, &expr.Verdict{ // nolint:gocritic
-		Kind: expr.VerdictAccept,
-	})...)
-
-	rule := &nftables.Rule{
-		Table: r.filterTable,
-		Chain: &nftables.Chain{
-			Name:     "FORWARD",
-			Table:    r.filterTable,
-			Type:     nftables.ChainTypeFilter,
-			Hooknum:  nftables.ChainHookForward,
-			Priority: nftables.ChainPriorityFilter,
-		},
-		Exprs:    exprs,
-		UserData: []byte(userDataAcceptForwardRuleSrc),
-	}
-
-	r.conn.AddRule(rule)
-
-	src = generateCIDRMatcherExpressions(true, "0.0.0.0/0")
-	dst = generateCIDRMatcherExpressions(false, sourceNetwork)
-
-	exprs = append(src, append(dst, &expr.Verdict{ //nolint:gocritic
-		Kind: expr.VerdictAccept,
-	})...)
-
-	rule = &nftables.Rule{
-		Table: r.filterTable,
-		Chain: &nftables.Chain{
-			Name:     "FORWARD",
-			Table:    r.filterTable,
-			Type:     nftables.ChainTypeFilter,
-			Hooknum:  nftables.ChainHookForward,
-			Priority: nftables.ChainPriorityFilter,
-		},
-		Exprs:    exprs,
-		UserData: []byte(userDataAcceptForwardRuleDst),
-	}
-	r.conn.AddRule(rule)
-	r.isDefaultFwdRulesEnabled = true
-}
-
-// RemoveRoutingRules removes a nftable rule pair from forwarding and nat chains
-func (r *router) RemoveRoutingRules(pair manager.RouterPair) error {
-	err := r.refreshRulesMap()
-	if err != nil {
-		return err
-	}
-
-	err = r.removeRoutingRule(manager.ForwardingFormat, pair)
-	if err != nil {
-		return err
-	}
-
-	err = r.removeRoutingRule(manager.InForwardingFormat, manager.GetInPair(pair))
-	if err != nil {
-		return err
-	}
-
-	err = r.removeRoutingRule(manager.NatFormat, pair)
-	if err != nil {
-		return err
-	}
-
-	err = r.removeRoutingRule(manager.InNatFormat, manager.GetInPair(pair))
-	if err != nil {
-		return err
-	}
-
-	if len(r.rules) == 0 {
-		err := r.cleanUpDefaultForwardRules()
-		if err != nil {
-			log.Errorf("failed to clean up rules from FORWARD chain: %s", err)
-		}
-	}
-
-	err = r.conn.Flush()
-	if err != nil {
-		return fmt.Errorf("nftables: received error while applying rule removal for %s: %v", pair.Destination, err)
-	}
-	log.Debugf("nftables: removed rules for %s", pair.Destination)
-	return nil
-}
-
-// removeRoutingRule add a nftable rule to the removal queue and delete from rules map
-func (r *router) removeRoutingRule(format string, pair manager.RouterPair) error {
-	ruleKey := manager.GenKey(format, pair.ID)
-
-	rule, found := r.rules[ruleKey]
-	if found {
-		ruleType := "forwarding"
-		if rule.Chain.Type == nftables.ChainTypeNAT {
-			ruleType = "nat"
-		}
-
-		err := r.conn.DelRule(rule)
-		if err != nil {
-			return fmt.Errorf("nftables: unable to remove %s rule for %s: %v", ruleType, pair.Destination, err)
-		}
-
-		log.Debugf("nftables: removing %s rule for %s", ruleType, pair.Destination)
-
-		delete(r.rules, ruleKey)
-	}
-	return nil
-}
-
-// refreshRulesMap refreshes the rule map with the latest rules. this is useful to avoid
-// duplicates and to get missing attributes that we don't have when adding new rules
-func (r *router) refreshRulesMap() error {
-	for _, chain := range r.chains {
-		rules, err := r.conn.GetRules(chain.Table, chain)
-		if err != nil {
-			return fmt.Errorf("nftables: unable to list rules: %v", err)
-		}
-		for _, rule := range rules {
-			if len(rule.UserData) > 0 {
-				r.rules[string(rule.UserData)] = rule
-			}
-		}
-	}
-	return nil
-}
-
-func (r *router) cleanUpDefaultForwardRules() error {
-	if r.filterTable == nil {
-		r.isDefaultFwdRulesEnabled = false
-		return nil
-	}
-
-	chains, err := r.conn.ListChainsOfTableFamily(nftables.TableFamilyIPv4)
-	if err != nil {
-		return err
-	}
-
-	var rules []*nftables.Rule
-	for _, chain := range chains {
-		if chain.Table.Name != r.filterTable.Name {
-			continue
-		}
-		if chain.Name != "FORWARD" {
-			continue
-		}
-
-		rules, err = r.conn.GetRules(r.filterTable, chain)
-		if err != nil {
-			return err
-		}
-	}
-
-	for _, rule := range rules {
-		if bytes.Equal(rule.UserData, []byte(userDataAcceptForwardRuleSrc)) || bytes.Equal(rule.UserData, []byte(userDataAcceptForwardRuleDst)) {
-			err := r.conn.DelRule(rule)
-			if err != nil {
-				return err
-			}
-		}
-	}
-	r.isDefaultFwdRulesEnabled = false
-	return r.conn.Flush()
-}
-
-// generateCIDRMatcherExpressions generates nftables expressions that matches a CIDR
-func generateCIDRMatcherExpressions(source bool, cidr string) []expr.Any {
-	ip, network, _ := net.ParseCIDR(cidr)
-	ipToAdd, _ := netip.AddrFromSlice(ip)
-	add := ipToAdd.Unmap()
-
-	var offSet uint32
-	if source {
-		offSet = 12 // src offset
-	} else {
-		offSet = 16 // dst offset
-	}
-
-	return []expr.Any{
-		// fetch src add
-		&expr.Payload{
-			DestRegister: 1,
-			Base:         expr.PayloadBaseNetworkHeader,
-			Offset:       offSet,
-			Len:          4,
-		},
-		// net mask
-		&expr.Bitwise{
-			DestRegister:   1,
-			SourceRegister: 1,
-			Len:            4,
-			Mask:           network.Mask,
-			Xor:            zeroXor,
-		},
-		// net address
-		&expr.Cmp{
-			Register: 1,
-			Data:     add.AsSlice(),
-		},
-	}
-}

client/firewall/nftables/router_linux.go

@@ -0,0 +1,798 @@
+package nftables
+
+import (
+	"bytes"
+	"context"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"net"
+	"net/netip"
+	"strings"
+
+	"github.com/google/nftables"
+	"github.com/google/nftables/binaryutil"
+	"github.com/google/nftables/expr"
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+	"github.com/netbirdio/netbird/client/internal/acl/id"
+	"github.com/netbirdio/netbird/client/internal/routemanager/refcounter"
+)
+
+const (
+	chainNameRoutingFw  = "netbird-rt-fwd"
+	chainNameRoutingNat = "netbird-rt-nat"
+	chainNameForward    = "FORWARD"
+
+	userDataAcceptForwardRuleIif = "frwacceptiif"
+	userDataAcceptForwardRuleOif = "frwacceptoif"
+)
+
+const refreshRulesMapError = "refresh rules map: %w"
+
+var (
+	errFilterTableNotFound = fmt.Errorf("nftables: 'filter' table not found")
+)
+
+type router struct {
+	ctx         context.Context
+	stop        context.CancelFunc
+	conn        *nftables.Conn
+	workTable   *nftables.Table
+	filterTable *nftables.Table
+	chains      map[string]*nftables.Chain
+	// rules is useful to avoid duplicates and to get missing attributes that we don't have when adding new rules
+	rules        map[string]*nftables.Rule
+	ipsetCounter *refcounter.Counter[string, []netip.Prefix, *nftables.Set]
+
+	wgIface          iFaceMapper
+	legacyManagement bool
+}
+
+func newRouter(parentCtx context.Context, workTable *nftables.Table, wgIface iFaceMapper) (*router, error) {
+	ctx, cancel := context.WithCancel(parentCtx)
+
+	r := &router{
+		ctx:       ctx,
+		stop:      cancel,
+		conn:      &nftables.Conn{},
+		workTable: workTable,
+		chains:    make(map[string]*nftables.Chain),
+		rules:     make(map[string]*nftables.Rule),
+		wgIface:   wgIface,
+	}
+
+	r.ipsetCounter = refcounter.New(
+		r.createIpSet,
+		r.deleteIpSet,
+	)
+
+	var err error
+	r.filterTable, err = r.loadFilterTable()
+	if err != nil {
+		if errors.Is(err, errFilterTableNotFound) {
+			log.Warnf("table 'filter' not found for forward rules")
+		} else {
+			return nil, err
+		}
+	}
+
+	err = r.cleanUpDefaultForwardRules()
+	if err != nil {
+		log.Errorf("failed to clean up rules from FORWARD chain: %s", err)
+	}
+
+	err = r.createContainers()
+	if err != nil {
+		log.Errorf("failed to create containers for route: %s", err)
+	}
+	return r, err
+}
+
+// Reset cleans existing nftables default forward rules from the system
+func (r *router) Reset() error {
+	// clear without deleting the ipsets, the nf table will be deleted by the caller
+	r.ipsetCounter.Clear()
+
+	return r.cleanUpDefaultForwardRules()
+}
+
+func (r *router) cleanUpDefaultForwardRules() error {
+	if r.filterTable == nil {
+		return nil
+	}
+
+	chains, err := r.conn.ListChainsOfTableFamily(nftables.TableFamilyIPv4)
+	if err != nil {
+		return fmt.Errorf("list chains: %v", err)
+	}
+
+	for _, chain := range chains {
+		if chain.Table.Name != r.filterTable.Name || chain.Name != chainNameForward {
+			continue
+		}
+
+		rules, err := r.conn.GetRules(r.filterTable, chain)
+		if err != nil {
+			return fmt.Errorf("get rules: %v", err)
+		}
+
+		for _, rule := range rules {
+			if bytes.Equal(rule.UserData, []byte(userDataAcceptForwardRuleIif)) ||
+				bytes.Equal(rule.UserData, []byte(userDataAcceptForwardRuleOif)) {
+				if err := r.conn.DelRule(rule); err != nil {
+					return fmt.Errorf("delete rule: %v", err)
+				}
+			}
+		}
+	}
+
+	return r.conn.Flush()
+}
+
+func (r *router) loadFilterTable() (*nftables.Table, error) {
+	tables, err := r.conn.ListTablesOfFamily(nftables.TableFamilyIPv4)
+	if err != nil {
+		return nil, fmt.Errorf("nftables: unable to list tables: %v", err)
+	}
+
+	for _, table := range tables {
+		if table.Name == "filter" {
+			return table, nil
+		}
+	}
+
+	return nil, errFilterTableNotFound
+}
+
+func (r *router) createContainers() error {
+
+	r.chains[chainNameRoutingFw] = r.conn.AddChain(&nftables.Chain{
+		Name:  chainNameRoutingFw,
+		Table: r.workTable,
+	})
+
+	insertReturnTrafficRule(r.conn, r.workTable, r.chains[chainNameRoutingFw])
+
+	r.chains[chainNameRoutingNat] = r.conn.AddChain(&nftables.Chain{
+		Name:     chainNameRoutingNat,
+		Table:    r.workTable,
+		Hooknum:  nftables.ChainHookPostrouting,
+		Priority: nftables.ChainPriorityNATSource - 1,
+		Type:     nftables.ChainTypeNAT,
+	})
+
+	r.acceptForwardRules()
+
+	err := r.refreshRulesMap()
+	if err != nil {
+		log.Errorf("failed to clean up rules from FORWARD chain: %s", err)
+	}
+
+	err = r.conn.Flush()
+	if err != nil {
+		return fmt.Errorf("nftables: unable to initialize table: %v", err)
+	}
+	return nil
+}
+
+// AddRouteFiltering appends a nftables rule to the routing chain
+func (r *router) AddRouteFiltering(
+	sources []netip.Prefix,
+	destination netip.Prefix,
+	proto firewall.Protocol,
+	sPort *firewall.Port,
+	dPort *firewall.Port,
+	action firewall.Action,
+) (firewall.Rule, error) {
+	ruleKey := id.GenerateRouteRuleKey(sources, destination, proto, sPort, dPort, action)
+	if _, ok := r.rules[string(ruleKey)]; ok {
+		return ruleKey, nil
+	}
+
+	chain := r.chains[chainNameRoutingFw]
+	var exprs []expr.Any
+
+	switch {
+	case len(sources) == 1 && sources[0].Bits() == 0:
+		// If it's 0.0.0.0/0, we don't need to add any source matching
+	case len(sources) == 1:
+		// If there's only one source, we can use it directly
+		exprs = append(exprs, generateCIDRMatcherExpressions(true, sources[0])...)
+	default:
+		// If there are multiple sources, create or get an ipset
+		var err error
+		exprs, err = r.getIpSetExprs(sources, exprs)
+		if err != nil {
+			return nil, fmt.Errorf("get ipset expressions: %w", err)
+		}
+	}
+
+	// Handle destination
+	exprs = append(exprs, generateCIDRMatcherExpressions(false, destination)...)
+
+	// Handle protocol
+	if proto != firewall.ProtocolALL {
+		protoNum, err := protoToInt(proto)
+		if err != nil {
+			return nil, fmt.Errorf("convert protocol to number: %w", err)
+		}
+		exprs = append(exprs, &expr.Meta{Key: expr.MetaKeyL4PROTO, Register: 1})
+		exprs = append(exprs, &expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     []byte{protoNum},
+		})
+
+		exprs = append(exprs, applyPort(sPort, true)...)
+		exprs = append(exprs, applyPort(dPort, false)...)
+	}
+
+	exprs = append(exprs, &expr.Counter{})
+
+	var verdict expr.VerdictKind
+	if action == firewall.ActionAccept {
+		verdict = expr.VerdictAccept
+	} else {
+		verdict = expr.VerdictDrop
+	}
+	exprs = append(exprs, &expr.Verdict{Kind: verdict})
+
+	rule := &nftables.Rule{
+		Table:    r.workTable,
+		Chain:    chain,
+		Exprs:    exprs,
+		UserData: []byte(ruleKey),
+	}
+
+	r.rules[string(ruleKey)] = r.conn.AddRule(rule)
+
+	return ruleKey, r.conn.Flush()
+}
+
+func (r *router) getIpSetExprs(sources []netip.Prefix, exprs []expr.Any) ([]expr.Any, error) {
+	setName := firewall.GenerateSetName(sources)
+	ref, err := r.ipsetCounter.Increment(setName, sources)
+	if err != nil {
+		return nil, fmt.Errorf("create or get ipset for sources: %w", err)
+	}
+
+	exprs = append(exprs,
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseNetworkHeader,
+			Offset:       12,
+			Len:          4,
+		},
+		&expr.Lookup{
+			SourceRegister: 1,
+			SetName:        ref.Out.Name,
+			SetID:          ref.Out.ID,
+		},
+	)
+	return exprs, nil
+}
+
+func (r *router) DeleteRouteRule(rule firewall.Rule) error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	ruleKey := rule.GetRuleID()
+	nftRule, exists := r.rules[ruleKey]
+	if !exists {
+		log.Debugf("route rule %s not found", ruleKey)
+		return nil
+	}
+
+	setName := r.findSetNameInRule(nftRule)
+
+	if err := r.deleteNftRule(nftRule, ruleKey); err != nil {
+		return fmt.Errorf("delete: %w", err)
+	}
+
+	if setName != "" {
+		if _, err := r.ipsetCounter.Decrement(setName); err != nil {
+			return fmt.Errorf("decrement ipset reference: %w", err)
+		}
+	}
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf(flushError, err)
+	}
+
+	return nil
+}
+
+func (r *router) createIpSet(setName string, sources []netip.Prefix) (*nftables.Set, error) {
+	// overlapping prefixes will result in an error, so we need to merge them
+	sources = firewall.MergeIPRanges(sources)
+
+	set := &nftables.Set{
+		Name:  setName,
+		Table: r.workTable,
+		// required for prefixes
+		Interval: true,
+		KeyType:  nftables.TypeIPAddr,
+	}
+
+	var elements []nftables.SetElement
+	for _, prefix := range sources {
+		// TODO: Implement IPv6 support
+		if prefix.Addr().Is6() {
+			log.Printf("Skipping IPv6 prefix %s: IPv6 support not yet implemented", prefix)
+			continue
+		}
+
+		// nftables needs half-open intervals [firstIP, lastIP) for prefixes
+		// e.g. 10.0.0.0/24 becomes [10.0.0.0, 10.0.1.0), 10.1.1.1/32 becomes [10.1.1.1, 10.1.1.2) etc
+		firstIP := prefix.Addr()
+		lastIP := calculateLastIP(prefix).Next()
+
+		elements = append(elements,
+			// the nft tool also adds a line like this, see https://github.com/google/nftables/issues/247
+			// nftables.SetElement{Key: []byte{0, 0, 0, 0}, IntervalEnd: true},
+			nftables.SetElement{Key: firstIP.AsSlice()},
+			nftables.SetElement{Key: lastIP.AsSlice(), IntervalEnd: true},
+		)
+	}
+
+	if err := r.conn.AddSet(set, elements); err != nil {
+		return nil, fmt.Errorf("error adding elements to set %s: %w", setName, err)
+	}
+
+	if err := r.conn.Flush(); err != nil {
+		return nil, fmt.Errorf("flush error: %w", err)
+	}
+
+	log.Printf("Created new ipset: %s with %d elements", setName, len(elements)/2)
+
+	return set, nil
+}
+
+// calculateLastIP determines the last IP in a given prefix.
+func calculateLastIP(prefix netip.Prefix) netip.Addr {
+	hostMask := ^uint32(0) >> prefix.Masked().Bits()
+	lastIP := uint32FromNetipAddr(prefix.Addr()) | hostMask
+
+	return netip.AddrFrom4(uint32ToBytes(lastIP))
+}
+
+// Utility function to convert netip.Addr to uint32.
+func uint32FromNetipAddr(addr netip.Addr) uint32 {
+	b := addr.As4()
+	return binary.BigEndian.Uint32(b[:])
+}
+
+// Utility function to convert uint32 to a netip-compatible byte slice.
+func uint32ToBytes(ip uint32) [4]byte {
+	var b [4]byte
+	binary.BigEndian.PutUint32(b[:], ip)
+	return b
+}
+
+func (r *router) deleteIpSet(setName string, set *nftables.Set) error {
+	r.conn.DelSet(set)
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf(flushError, err)
+	}
+
+	log.Debugf("Deleted unused ipset %s", setName)
+	return nil
+}
+
+func (r *router) findSetNameInRule(rule *nftables.Rule) string {
+	for _, e := range rule.Exprs {
+		if lookup, ok := e.(*expr.Lookup); ok {
+			return lookup.SetName
+		}
+	}
+	return ""
+}
+
+func (r *router) deleteNftRule(rule *nftables.Rule, ruleKey string) error {
+	if err := r.conn.DelRule(rule); err != nil {
+		return fmt.Errorf("delete rule %s: %w", ruleKey, err)
+	}
+	delete(r.rules, ruleKey)
+
+	log.Debugf("removed route rule %s", ruleKey)
+
+	return nil
+}
+
+// AddNatRule appends a nftables rule pair to the nat chain
+func (r *router) AddNatRule(pair firewall.RouterPair) error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	if r.legacyManagement {
+		log.Warnf("This peer is connected to a NetBird Management service with an older version. Allowing all traffic for %s", pair.Destination)
+		if err := r.addLegacyRouteRule(pair); err != nil {
+			return fmt.Errorf("add legacy routing rule: %w", err)
+		}
+	}
+
+	if pair.Masquerade {
+		if err := r.addNatRule(pair); err != nil {
+			return fmt.Errorf("add nat rule: %w", err)
+		}
+
+		if err := r.addNatRule(firewall.GetInversePair(pair)); err != nil {
+			return fmt.Errorf("add inverse nat rule: %w", err)
+		}
+	}
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("nftables: insert rules for %s: %v", pair.Destination, err)
+	}
+
+	return nil
+}
+
+// addNatRule inserts a nftables rule to the conn client flush queue
+func (r *router) addNatRule(pair firewall.RouterPair) error {
+	sourceExp := generateCIDRMatcherExpressions(true, pair.Source)
+	destExp := generateCIDRMatcherExpressions(false, pair.Destination)
+
+	dir := expr.MetaKeyIIFNAME
+	if pair.Inverse {
+		dir = expr.MetaKeyOIFNAME
+	}
+
+	intf := ifname(r.wgIface.Name())
+	exprs := []expr.Any{
+		&expr.Meta{
+			Key:      dir,
+			Register: 1,
+		},
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     intf,
+		},
+	}
+
+	exprs = append(exprs, sourceExp...)
+	exprs = append(exprs, destExp...)
+	exprs = append(exprs,
+		&expr.Counter{}, &expr.Masq{},
+	)
+
+	ruleKey := firewall.GenKey(firewall.NatFormat, pair)
+
+	if _, exists := r.rules[ruleKey]; exists {
+		if err := r.removeNatRule(pair); err != nil {
+			return fmt.Errorf("remove routing rule: %w", err)
+		}
+	}
+
+	r.rules[ruleKey] = r.conn.AddRule(&nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameRoutingNat],
+		Exprs:    exprs,
+		UserData: []byte(ruleKey),
+	})
+	return nil
+}
+
+// addLegacyRouteRule adds a legacy routing rule for mgmt servers pre route acls
+func (r *router) addLegacyRouteRule(pair firewall.RouterPair) error {
+	sourceExp := generateCIDRMatcherExpressions(true, pair.Source)
+	destExp := generateCIDRMatcherExpressions(false, pair.Destination)
+
+	exprs := []expr.Any{
+		&expr.Counter{},
+		&expr.Verdict{
+			Kind: expr.VerdictAccept,
+		},
+	}
+
+	expression := append(sourceExp, append(destExp, exprs...)...) // nolint:gocritic
+
+	ruleKey := firewall.GenKey(firewall.ForwardingFormat, pair)
+
+	if _, exists := r.rules[ruleKey]; exists {
+		if err := r.removeLegacyRouteRule(pair); err != nil {
+			return fmt.Errorf("remove legacy routing rule: %w", err)
+		}
+	}
+
+	r.rules[ruleKey] = r.conn.AddRule(&nftables.Rule{
+		Table:    r.workTable,
+		Chain:    r.chains[chainNameRoutingFw],
+		Exprs:    expression,
+		UserData: []byte(ruleKey),
+	})
+	return nil
+}
+
+// removeLegacyRouteRule removes a legacy routing rule for mgmt servers pre route acls
+func (r *router) removeLegacyRouteRule(pair firewall.RouterPair) error {
+	ruleKey := firewall.GenKey(firewall.ForwardingFormat, pair)
+
+	if rule, exists := r.rules[ruleKey]; exists {
+		if err := r.conn.DelRule(rule); err != nil {
+			return fmt.Errorf("remove legacy forwarding rule %s -> %s: %v", pair.Source, pair.Destination, err)
+		}
+
+		log.Debugf("nftables: removed legacy forwarding rule %s -> %s", pair.Source, pair.Destination)
+
+		delete(r.rules, ruleKey)
+	} else {
+		log.Debugf("nftables: legacy forwarding rule %s not found", ruleKey)
+	}
+
+	return nil
+}
+
+// GetLegacyManagement returns the route manager's legacy management mode
+func (r *router) GetLegacyManagement() bool {
+	return r.legacyManagement
+}
+
+// SetLegacyManagement sets the route manager to use legacy management mode
+func (r *router) SetLegacyManagement(isLegacy bool) {
+	r.legacyManagement = isLegacy
+}
+
+// RemoveAllLegacyRouteRules removes all legacy routing rules for mgmt servers pre route acls
+func (r *router) RemoveAllLegacyRouteRules() error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	var merr *multierror.Error
+	for k, rule := range r.rules {
+		if !strings.HasPrefix(k, firewall.ForwardingFormatPrefix) {
+			continue
+		}
+		if err := r.conn.DelRule(rule); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("remove legacy forwarding rule: %v", err))
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// acceptForwardRules adds iif/oif rules in the filter table/forward chain to make sure
+// that our traffic is not dropped by existing rules there.
+// The existing FORWARD rules/policies decide outbound traffic towards our interface.
+// In case the FORWARD policy is set to "drop", we add an established/related rule to allow return traffic for the inbound rule.
+func (r *router) acceptForwardRules() {
+	if r.filterTable == nil {
+		log.Debugf("table 'filter' not found for forward rules, skipping accept rules")
+		return
+	}
+
+	intf := ifname(r.wgIface.Name())
+
+	// Rule for incoming interface (iif) with counter
+	iifRule := &nftables.Rule{
+		Table: r.filterTable,
+		Chain: &nftables.Chain{
+			Name:     "FORWARD",
+			Table:    r.filterTable,
+			Type:     nftables.ChainTypeFilter,
+			Hooknum:  nftables.ChainHookForward,
+			Priority: nftables.ChainPriorityFilter,
+		},
+		Exprs: []expr.Any{
+			&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+			&expr.Cmp{
+				Op:       expr.CmpOpEq,
+				Register: 1,
+				Data:     intf,
+			},
+			&expr.Counter{},
+			&expr.Verdict{Kind: expr.VerdictAccept},
+		},
+		UserData: []byte(userDataAcceptForwardRuleIif),
+	}
+	r.conn.InsertRule(iifRule)
+
+	// Rule for outgoing interface (oif) with counter
+	oifRule := &nftables.Rule{
+		Table: r.filterTable,
+		Chain: &nftables.Chain{
+			Name:     "FORWARD",
+			Table:    r.filterTable,
+			Type:     nftables.ChainTypeFilter,
+			Hooknum:  nftables.ChainHookForward,
+			Priority: nftables.ChainPriorityFilter,
+		},
+		Exprs: []expr.Any{
+			&expr.Meta{Key: expr.MetaKeyOIFNAME, Register: 1},
+			&expr.Cmp{
+				Op:       expr.CmpOpEq,
+				Register: 1,
+				Data:     intf,
+			},
+			&expr.Ct{
+				Key:      expr.CtKeySTATE,
+				Register: 2,
+			},
+			&expr.Bitwise{
+				SourceRegister: 2,
+				DestRegister:   2,
+				Len:            4,
+				Mask:           binaryutil.NativeEndian.PutUint32(expr.CtStateBitESTABLISHED | expr.CtStateBitRELATED),
+				Xor:            binaryutil.NativeEndian.PutUint32(0),
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpNeq,
+				Register: 2,
+				Data:     []byte{0, 0, 0, 0},
+			},
+			&expr.Counter{},
+			&expr.Verdict{Kind: expr.VerdictAccept},
+		},
+		UserData: []byte(userDataAcceptForwardRuleOif),
+	}
+
+	r.conn.InsertRule(oifRule)
+}
+
+// RemoveNatRule removes a nftables rule pair from nat chains
+func (r *router) RemoveNatRule(pair firewall.RouterPair) error {
+	if err := r.refreshRulesMap(); err != nil {
+		return fmt.Errorf(refreshRulesMapError, err)
+	}
+
+	if err := r.removeNatRule(pair); err != nil {
+		return fmt.Errorf("remove nat rule: %w", err)
+	}
+
+	if err := r.removeNatRule(firewall.GetInversePair(pair)); err != nil {
+		return fmt.Errorf("remove inverse nat rule: %w", err)
+	}
+
+	if err := r.removeLegacyRouteRule(pair); err != nil {
+		return fmt.Errorf("remove legacy routing rule: %w", err)
+	}
+
+	if err := r.conn.Flush(); err != nil {
+		return fmt.Errorf("nftables: received error while applying rule removal for %s: %v", pair.Destination, err)
+	}
+
+	log.Debugf("nftables: removed rules for %s", pair.Destination)
+	return nil
+}
+
+// removeNatRule adds a nftables rule to the removal queue and deletes it from the rules map
+func (r *router) removeNatRule(pair firewall.RouterPair) error {
+	ruleKey := firewall.GenKey(firewall.NatFormat, pair)
+
+	if rule, exists := r.rules[ruleKey]; exists {
+		err := r.conn.DelRule(rule)
+		if err != nil {
+			return fmt.Errorf("remove nat rule %s -> %s: %v", pair.Source, pair.Destination, err)
+		}
+
+		log.Debugf("nftables: removed nat rule %s -> %s", pair.Source, pair.Destination)
+
+		delete(r.rules, ruleKey)
+	} else {
+		log.Debugf("nftables: nat rule %s not found", ruleKey)
+	}
+
+	return nil
+}
+
+// refreshRulesMap refreshes the rule map with the latest rules. this is useful to avoid
+// duplicates and to get missing attributes that we don't have when adding new rules
+func (r *router) refreshRulesMap() error {
+	for _, chain := range r.chains {
+		rules, err := r.conn.GetRules(chain.Table, chain)
+		if err != nil {
+			return fmt.Errorf("nftables: unable to list rules: %v", err)
+		}
+		for _, rule := range rules {
+			if len(rule.UserData) > 0 {
+				r.rules[string(rule.UserData)] = rule
+			}
+		}
+	}
+	return nil
+}
+
+// generateCIDRMatcherExpressions generates nftables expressions that matches a CIDR
+func generateCIDRMatcherExpressions(source bool, prefix netip.Prefix) []expr.Any {
+	var offset uint32
+	if source {
+		offset = 12 // src offset
+	} else {
+		offset = 16 // dst offset
+	}
+
+	ones := prefix.Bits()
+	// 0.0.0.0/0 doesn't need extra expressions
+	if ones == 0 {
+		return nil
+	}
+
+	mask := net.CIDRMask(ones, 32)
+
+	return []expr.Any{
+		&expr.Payload{
+			DestRegister: 1,
+			Base:         expr.PayloadBaseNetworkHeader,
+			Offset:       offset,
+			Len:          4,
+		},
+		// netmask
+		&expr.Bitwise{
+			DestRegister:   1,
+			SourceRegister: 1,
+			Len:            4,
+			Mask:           mask,
+			Xor:            []byte{0, 0, 0, 0},
+		},
+		// net address
+		&expr.Cmp{
+			Op:       expr.CmpOpEq,
+			Register: 1,
+			Data:     prefix.Masked().Addr().AsSlice(),
+		},
+	}
+}
+
+func applyPort(port *firewall.Port, isSource bool) []expr.Any {
+	if port == nil {
+		return nil
+	}
+
+	var exprs []expr.Any
+
+	offset := uint32(2) // Default offset for destination port
+	if isSource {
+		offset = 0 // Offset for source port
+	}
+
+	exprs = append(exprs, &expr.Payload{
+		DestRegister: 1,
+		Base:         expr.PayloadBaseTransportHeader,
+		Offset:       offset,
+		Len:          2,
+	})
+
+	if port.IsRange && len(port.Values) == 2 {
+		// Handle port range
+		exprs = append(exprs,
+			&expr.Cmp{
+				Op:       expr.CmpOpGte,
+				Register: 1,
+				Data:     binaryutil.BigEndian.PutUint16(uint16(port.Values[0])),
+			},
+			&expr.Cmp{
+				Op:       expr.CmpOpLte,
+				Register: 1,
+				Data:     binaryutil.BigEndian.PutUint16(uint16(port.Values[1])),
+			},
+		)
+	} else {
+		// Handle single port or multiple ports
+		for i, p := range port.Values {
+			if i > 0 {
+				// Add a bitwise OR operation between port checks
+				exprs = append(exprs, &expr.Bitwise{
+					SourceRegister: 1,
+					DestRegister:   1,
+					Len:            4,
+					Mask:           []byte{0x00, 0x00, 0xff, 0xff},
+					Xor:            []byte{0x00, 0x00, 0x00, 0x00},
+				})
+			}
+			exprs = append(exprs, &expr.Cmp{
+				Op:       expr.CmpOpEq,
+				Register: 1,
+				Data:     binaryutil.BigEndian.PutUint16(uint16(p)),
+			})
+		}
+	}
+
+	return exprs
+}

client/firewall/nftables/router_linux_test.go

@@ -4,11 +4,15 @@ package nftables
 
 import (
 	"context"
+	"encoding/binary"
+	"net/netip"
+	"os/exec"
 	"testing"
 
 	"github.com/coreos/go-iptables/iptables"
 	"github.com/google/nftables"
 	"github.com/google/nftables/expr"
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
@@ -24,56 +28,50 @@ const (
 	NFTABLES
 )
 
-func TestNftablesManager_InsertRoutingRules(t *testing.T) {
+func TestNftablesManager_AddNatRule(t *testing.T) {
 	if check() != NFTABLES {
 		t.Skip("nftables not supported on this OS")
 	}
 
 	table, err := createWorkTable()
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err, "Failed to create work table")
 
 	defer deleteWorkTable()
 
 	for _, testCase := range test.InsertRuleTestCases {
 		t.Run(testCase.Name, func(t *testing.T) {
-			manager, err := newRouter(context.TODO(), table)
+			manager, err := newRouter(context.TODO(), table, ifaceMock)
 			require.NoError(t, err, "failed to create router")
 
 			nftablesTestingClient := &nftables.Conn{}
 
-			defer manager.ResetForwardRules()
+			defer func(manager *router) {
+				require.NoError(t, manager.Reset(), "failed to reset rules")
+			}(manager)
 
 			require.NoError(t, err, "shouldn't return error")
 
-			err = manager.InsertRoutingRules(testCase.InputPair)
-			defer func() {
-				_ = manager.RemoveRoutingRules(testCase.InputPair)
-			}()
-			require.NoError(t, err, "forwarding pair should be inserted")
+			err = manager.AddNatRule(testCase.InputPair)
+			require.NoError(t, err, "pair should be inserted")
 
-			sourceExp := generateCIDRMatcherExpressions(true, testCase.InputPair.Source)
-			destExp := generateCIDRMatcherExpressions(false, testCase.InputPair.Destination)
-			testingExpression := append(sourceExp, destExp...) //nolint:gocritic
-			fwdRuleKey := firewall.GenKey(firewall.ForwardingFormat, testCase.InputPair.ID)
-
-			found := 0
-			for _, chain := range manager.chains {
-				rules, err := nftablesTestingClient.GetRules(chain.Table, chain)
-				require.NoError(t, err, "should list rules for %s table and %s chain", chain.Table.Name, chain.Name)
-				for _, rule := range rules {
-					if len(rule.UserData) > 0 && string(rule.UserData) == fwdRuleKey {
-						require.ElementsMatchf(t, rule.Exprs[:len(testingExpression)], testingExpression, "forwarding rule elements should match")
-						found = 1
-					}
-				}
-			}
-
-			require.Equal(t, 1, found, "should find at least 1 rule to test")
+			defer func(manager *router, pair firewall.RouterPair) {
+				require.NoError(t, manager.RemoveNatRule(pair), "failed to remove rule")
+			}(manager, testCase.InputPair)
 
 			if testCase.InputPair.Masquerade {
-				natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair.ID)
+				sourceExp := generateCIDRMatcherExpressions(true, testCase.InputPair.Source)
+				destExp := generateCIDRMatcherExpressions(false, testCase.InputPair.Destination)
+				testingExpression := append(sourceExp, destExp...) //nolint:gocritic
+				testingExpression = append(testingExpression,
+					&expr.Meta{Key: expr.MetaKeyIIFNAME, Register: 1},
+					&expr.Cmp{
+						Op:       expr.CmpOpEq,
+						Register: 1,
+						Data:     ifname(ifaceMock.Name()),
+					},
+				)
+
+				natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair)
 				found := 0
 				for _, chain := range manager.chains {
 					rules, err := nftablesTestingClient.GetRules(chain.Table, chain)
@@ -88,27 +86,20 @@ func TestNftablesManager_InsertRoutingRules(t *testing.T) {
 				require.Equal(t, 1, found, "should find at least 1 rule to test")
 			}
 
-			sourceExp = generateCIDRMatcherExpressions(true, firewall.GetInPair(testCase.InputPair).Source)
-			destExp = generateCIDRMatcherExpressions(false, firewall.GetInPair(testCase.InputPair).Destination)
-			testingExpression = append(sourceExp, destExp...) //nolint:gocritic
-			inFwdRuleKey := firewall.GenKey(firewall.InForwardingFormat, testCase.InputPair.ID)
-
-			found = 0
-			for _, chain := range manager.chains {
-				rules, err := nftablesTestingClient.GetRules(chain.Table, chain)
-				require.NoError(t, err, "should list rules for %s table and %s chain", chain.Table.Name, chain.Name)
-				for _, rule := range rules {
-					if len(rule.UserData) > 0 && string(rule.UserData) == inFwdRuleKey {
-						require.ElementsMatchf(t, rule.Exprs[:len(testingExpression)], testingExpression, "income forwarding rule elements should match")
-						found = 1
-					}
-				}
-			}
-
-			require.Equal(t, 1, found, "should find at least 1 rule to test")
-
 			if testCase.InputPair.Masquerade {
-				inNatRuleKey := firewall.GenKey(firewall.InNatFormat, testCase.InputPair.ID)
+				sourceExp := generateCIDRMatcherExpressions(true, testCase.InputPair.Source)
+				destExp := generateCIDRMatcherExpressions(false, testCase.InputPair.Destination)
+				testingExpression := append(sourceExp, destExp...) //nolint:gocritic
+				testingExpression = append(testingExpression,
+					&expr.Meta{Key: expr.MetaKeyOIFNAME, Register: 1},
+					&expr.Cmp{
+						Op:       expr.CmpOpEq,
+						Register: 1,
+						Data:     ifname(ifaceMock.Name()),
+					},
+				)
+
+				inNatRuleKey := firewall.GenKey(firewall.NatFormat, firewall.GetInversePair(testCase.InputPair))
 				found := 0
 				for _, chain := range manager.chains {
 					rules, err := nftablesTestingClient.GetRules(chain.Table, chain)
@@ -122,45 +113,37 @@ func TestNftablesManager_InsertRoutingRules(t *testing.T) {
 				}
 				require.Equal(t, 1, found, "should find at least 1 rule to test")
 			}
+
 		})
 	}
 }
 
-func TestNftablesManager_RemoveRoutingRules(t *testing.T) {
+func TestNftablesManager_RemoveNatRule(t *testing.T) {
 	if check() != NFTABLES {
 		t.Skip("nftables not supported on this OS")
 	}
 
 	table, err := createWorkTable()
-	if err != nil {
-		t.Fatal(err)
-	}
+	require.NoError(t, err, "Failed to create work table")
 
 	defer deleteWorkTable()
 
 	for _, testCase := range test.RemoveRuleTestCases {
 		t.Run(testCase.Name, func(t *testing.T) {
-			manager, err := newRouter(context.TODO(), table)
+			manager, err := newRouter(context.TODO(), table, ifaceMock)
 			require.NoError(t, err, "failed to create router")
 
 			nftablesTestingClient := &nftables.Conn{}
 
-			defer manager.ResetForwardRules()
+			defer func(manager *router) {
+				require.NoError(t, manager.Reset(), "failed to reset rules")
+			}(manager)
 
 			sourceExp := generateCIDRMatcherExpressions(true, testCase.InputPair.Source)
 			destExp := generateCIDRMatcherExpressions(false, testCase.InputPair.Destination)
 
-			forwardExp := append(sourceExp, append(destExp, exprCounterAccept...)...) //nolint:gocritic
-			forwardRuleKey := firewall.GenKey(firewall.ForwardingFormat, testCase.InputPair.ID)
-			insertedForwarding := nftablesTestingClient.InsertRule(&nftables.Rule{
-				Table:    manager.workTable,
-				Chain:    manager.chains[chainNameRouteingFw],
-				Exprs:    forwardExp,
-				UserData: []byte(forwardRuleKey),
-			})
-
 			natExp := append(sourceExp, append(destExp, &expr.Counter{}, &expr.Masq{})...) //nolint:gocritic
-			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair.ID)
+			natRuleKey := firewall.GenKey(firewall.NatFormat, testCase.InputPair)
 
 			insertedNat := nftablesTestingClient.InsertRule(&nftables.Rule{
 				Table:    manager.workTable,
@@ -169,20 +152,11 @@ func TestNftablesManager_RemoveRoutingRules(t *testing.T) {
 				UserData: []byte(natRuleKey),
 			})
 
-			sourceExp = generateCIDRMatcherExpressions(true, firewall.GetInPair(testCase.InputPair).Source)
-			destExp = generateCIDRMatcherExpressions(false, firewall.GetInPair(testCase.InputPair).Destination)
-
-			forwardExp = append(sourceExp, append(destExp, exprCounterAccept...)...) //nolint:gocritic
-			inForwardRuleKey := firewall.GenKey(firewall.InForwardingFormat, testCase.InputPair.ID)
-			insertedInForwarding := nftablesTestingClient.InsertRule(&nftables.Rule{
-				Table:    manager.workTable,
-				Chain:    manager.chains[chainNameRouteingFw],
-				Exprs:    forwardExp,
-				UserData: []byte(inForwardRuleKey),
-			})
+			sourceExp = generateCIDRMatcherExpressions(true, firewall.GetInversePair(testCase.InputPair).Source)
+			destExp = generateCIDRMatcherExpressions(false, firewall.GetInversePair(testCase.InputPair).Destination)
 
 			natExp = append(sourceExp, append(destExp, &expr.Counter{}, &expr.Masq{})...) //nolint:gocritic
-			inNatRuleKey := firewall.GenKey(firewall.InNatFormat, testCase.InputPair.ID)
+			inNatRuleKey := firewall.GenKey(firewall.NatFormat, firewall.GetInversePair(testCase.InputPair))
 
 			insertedInNat := nftablesTestingClient.InsertRule(&nftables.Rule{
 				Table:    manager.workTable,
@@ -194,9 +168,10 @@ func TestNftablesManager_RemoveRoutingRules(t *testing.T) {
 			err = nftablesTestingClient.Flush()
 			require.NoError(t, err, "shouldn't return error")
 
-			manager.ResetForwardRules()
+			err = manager.Reset()
+			require.NoError(t, err, "shouldn't return error")
 
-			err = manager.RemoveRoutingRules(testCase.InputPair)
+			err = manager.RemoveNatRule(testCase.InputPair)
 			require.NoError(t, err, "shouldn't return error")
 
 			for _, chain := range manager.chains {
@@ -204,9 +179,7 @@ func TestNftablesManager_RemoveRoutingRules(t *testing.T) {
 				require.NoError(t, err, "should list rules for %s table and %s chain", chain.Table.Name, chain.Name)
 				for _, rule := range rules {
 					if len(rule.UserData) > 0 {
-						require.NotEqual(t, insertedForwarding.UserData, rule.UserData, "forwarding rule should not exist")
 						require.NotEqual(t, insertedNat.UserData, rule.UserData, "nat rule should not exist")
-						require.NotEqual(t, insertedInForwarding.UserData, rule.UserData, "income forwarding rule should not exist")
 						require.NotEqual(t, insertedInNat.UserData, rule.UserData, "income nat rule should not exist")
 					}
 				}
@@ -215,6 +188,468 @@ func TestNftablesManager_RemoveRoutingRules(t *testing.T) {
 	}
 }
 
+func TestRouter_AddRouteFiltering(t *testing.T) {
+	if check() != NFTABLES {
+		t.Skip("nftables not supported on this system")
+	}
+
+	workTable, err := createWorkTable()
+	require.NoError(t, err, "Failed to create work table")
+
+	defer deleteWorkTable()
+
+	r, err := newRouter(context.Background(), workTable, ifaceMock)
+	require.NoError(t, err, "Failed to create router")
+
+	defer func(r *router) {
+		require.NoError(t, r.Reset(), "Failed to reset rules")
+	}(r)
+
+	tests := []struct {
+		name        string
+		sources     []netip.Prefix
+		destination netip.Prefix
+		proto       firewall.Protocol
+		sPort       *firewall.Port
+		dPort       *firewall.Port
+		direction   firewall.RuleDirection
+		action      firewall.Action
+		expectSet   bool
+	}{
+		{
+			name:        "Basic TCP rule with single source",
+			sources:     []netip.Prefix{netip.MustParsePrefix("192.168.1.0/24")},
+			destination: netip.MustParsePrefix("10.0.0.0/24"),
+			proto:       firewall.ProtocolTCP,
+			sPort:       nil,
+			dPort:       &firewall.Port{Values: []int{80}},
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name: "UDP rule with multiple sources",
+			sources: []netip.Prefix{
+				netip.MustParsePrefix("172.16.0.0/16"),
+				netip.MustParsePrefix("192.168.0.0/16"),
+			},
+			destination: netip.MustParsePrefix("10.0.0.0/8"),
+			proto:       firewall.ProtocolUDP,
+			sPort:       &firewall.Port{Values: []int{1024, 2048}, IsRange: true},
+			dPort:       nil,
+			direction:   firewall.RuleDirectionOUT,
+			action:      firewall.ActionDrop,
+			expectSet:   true,
+		},
+		{
+			name:        "All protocols rule",
+			sources:     []netip.Prefix{netip.MustParsePrefix("10.0.0.0/8")},
+			destination: netip.MustParsePrefix("0.0.0.0/0"),
+			proto:       firewall.ProtocolALL,
+			sPort:       nil,
+			dPort:       nil,
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "ICMP rule",
+			sources:     []netip.Prefix{netip.MustParsePrefix("192.168.0.0/16")},
+			destination: netip.MustParsePrefix("10.0.0.0/8"),
+			proto:       firewall.ProtocolICMP,
+			sPort:       nil,
+			dPort:       nil,
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "TCP rule with multiple source ports",
+			sources:     []netip.Prefix{netip.MustParsePrefix("172.16.0.0/12")},
+			destination: netip.MustParsePrefix("192.168.0.0/16"),
+			proto:       firewall.ProtocolTCP,
+			sPort:       &firewall.Port{Values: []int{80, 443, 8080}},
+			dPort:       nil,
+			direction:   firewall.RuleDirectionOUT,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "UDP rule with single IP and port range",
+			sources:     []netip.Prefix{netip.MustParsePrefix("192.168.1.1/32")},
+			destination: netip.MustParsePrefix("10.0.0.0/24"),
+			proto:       firewall.ProtocolUDP,
+			sPort:       nil,
+			dPort:       &firewall.Port{Values: []int{5000, 5100}, IsRange: true},
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionDrop,
+			expectSet:   false,
+		},
+		{
+			name:        "TCP rule with source and destination ports",
+			sources:     []netip.Prefix{netip.MustParsePrefix("10.0.0.0/24")},
+			destination: netip.MustParsePrefix("172.16.0.0/16"),
+			proto:       firewall.ProtocolTCP,
+			sPort:       &firewall.Port{Values: []int{1024, 65535}, IsRange: true},
+			dPort:       &firewall.Port{Values: []int{22}},
+			direction:   firewall.RuleDirectionOUT,
+			action:      firewall.ActionAccept,
+			expectSet:   false,
+		},
+		{
+			name:        "Drop all incoming traffic",
+			sources:     []netip.Prefix{netip.MustParsePrefix("0.0.0.0/0")},
+			destination: netip.MustParsePrefix("192.168.0.0/24"),
+			proto:       firewall.ProtocolALL,
+			sPort:       nil,
+			dPort:       nil,
+			direction:   firewall.RuleDirectionIN,
+			action:      firewall.ActionDrop,
+			expectSet:   false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ruleKey, err := r.AddRouteFiltering(tt.sources, tt.destination, tt.proto, tt.sPort, tt.dPort, tt.action)
+			require.NoError(t, err, "AddRouteFiltering failed")
+
+			// Check if the rule is in the internal map
+			rule, ok := r.rules[ruleKey.GetRuleID()]
+			assert.True(t, ok, "Rule not found in internal map")
+
+			t.Log("Internal rule expressions:")
+			for i, expr := range rule.Exprs {
+				t.Logf("  [%d] %T: %+v", i, expr, expr)
+			}
+
+			// Verify internal rule content
+			verifyRule(t, rule, tt.sources, tt.destination, tt.proto, tt.sPort, tt.dPort, tt.direction, tt.action, tt.expectSet)
+
+			// Check if the rule exists in nftables and verify its content
+			rules, err := r.conn.GetRules(r.workTable, r.chains[chainNameRoutingFw])
+			require.NoError(t, err, "Failed to get rules from nftables")
+
+			var nftRule *nftables.Rule
+			for _, rule := range rules {
+				if string(rule.UserData) == ruleKey.GetRuleID() {
+					nftRule = rule
+					break
+				}
+			}
+
+			require.NotNil(t, nftRule, "Rule not found in nftables")
+			t.Log("Actual nftables rule expressions:")
+			for i, expr := range nftRule.Exprs {
+				t.Logf("  [%d] %T: %+v", i, expr, expr)
+			}
+
+			// Verify actual nftables rule content
+			verifyRule(t, nftRule, tt.sources, tt.destination, tt.proto, tt.sPort, tt.dPort, tt.direction, tt.action, tt.expectSet)
+
+			// Clean up
+			err = r.DeleteRouteRule(ruleKey)
+			require.NoError(t, err, "Failed to delete rule")
+		})
+	}
+}
+
+func TestNftablesCreateIpSet(t *testing.T) {
+	if check() != NFTABLES {
+		t.Skip("nftables not supported on this system")
+	}
+
+	workTable, err := createWorkTable()
+	require.NoError(t, err, "Failed to create work table")
+
+	defer deleteWorkTable()
+
+	r, err := newRouter(context.Background(), workTable, ifaceMock)
+	require.NoError(t, err, "Failed to create router")
+
+	defer func() {
+		require.NoError(t, r.Reset(), "Failed to reset router")
+	}()
+
+	tests := []struct {
+		name     string
+		sources  []netip.Prefix
+		expected []netip.Prefix
+	}{
+		{
+			name:    "Single IP",
+			sources: []netip.Prefix{netip.MustParsePrefix("192.168.1.1/32")},
+		},
+		{
+			name: "Multiple IPs",
+			sources: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.1/32"),
+				netip.MustParsePrefix("10.0.0.1/32"),
+				netip.MustParsePrefix("172.16.0.1/32"),
+			},
+		},
+		{
+			name:    "Single Subnet",
+			sources: []netip.Prefix{netip.MustParsePrefix("192.168.0.0/24")},
+		},
+		{
+			name: "Multiple Subnets with Various Prefix Lengths",
+			sources: []netip.Prefix{
+				netip.MustParsePrefix("10.0.0.0/8"),
+				netip.MustParsePrefix("172.16.0.0/16"),
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("203.0.113.0/26"),
+			},
+		},
+		{
+			name: "Mix of Single IPs and Subnets in Different Positions",
+			sources: []netip.Prefix{
+				netip.MustParsePrefix("192.168.1.1/32"),
+				netip.MustParsePrefix("10.0.0.0/16"),
+				netip.MustParsePrefix("172.16.0.1/32"),
+				netip.MustParsePrefix("203.0.113.0/24"),
+			},
+		},
+		{
+			name: "Overlapping IPs/Subnets",
+			sources: []netip.Prefix{
+				netip.MustParsePrefix("10.0.0.0/8"),
+				netip.MustParsePrefix("10.0.0.0/16"),
+				netip.MustParsePrefix("10.0.0.1/32"),
+				netip.MustParsePrefix("192.168.0.0/16"),
+				netip.MustParsePrefix("192.168.1.0/24"),
+				netip.MustParsePrefix("192.168.1.1/32"),
+			},
+			expected: []netip.Prefix{
+				netip.MustParsePrefix("10.0.0.0/8"),
+				netip.MustParsePrefix("192.168.0.0/16"),
+			},
+		},
+	}
+
+	// Add this helper function inside TestNftablesCreateIpSet
+	printNftSets := func() {
+		cmd := exec.Command("nft", "list", "sets")
+		output, err := cmd.CombinedOutput()
+		if err != nil {
+			t.Logf("Failed to run 'nft list sets': %v", err)
+		} else {
+			t.Logf("Current nft sets:\n%s", output)
+		}
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			setName := firewall.GenerateSetName(tt.sources)
+			set, err := r.createIpSet(setName, tt.sources)
+			if err != nil {
+				t.Logf("Failed to create IP set: %v", err)
+				printNftSets()
+				require.NoError(t, err, "Failed to create IP set")
+			}
+			require.NotNil(t, set, "Created set is nil")
+
+			// Verify set properties
+			assert.Equal(t, setName, set.Name, "Set name mismatch")
+			assert.Equal(t, r.workTable, set.Table, "Set table mismatch")
+			assert.True(t, set.Interval, "Set interval property should be true")
+			assert.Equal(t, nftables.TypeIPAddr, set.KeyType, "Set key type mismatch")
+
+			// Fetch the created set from nftables
+			fetchedSet, err := r.conn.GetSetByName(r.workTable, setName)
+			require.NoError(t, err, "Failed to fetch created set")
+			require.NotNil(t, fetchedSet, "Fetched set is nil")
+
+			// Verify set elements
+			elements, err := r.conn.GetSetElements(fetchedSet)
+			require.NoError(t, err, "Failed to get set elements")
+
+			// Count the number of unique prefixes (excluding interval end markers)
+			uniquePrefixes := make(map[string]bool)
+			for _, elem := range elements {
+				if !elem.IntervalEnd {
+					ip := netip.AddrFrom4(*(*[4]byte)(elem.Key))
+					uniquePrefixes[ip.String()] = true
+				}
+			}
+
+			// Check against expected merged prefixes
+			expectedCount := len(tt.expected)
+			if expectedCount == 0 {
+				expectedCount = len(tt.sources)
+			}
+			assert.Equal(t, expectedCount, len(uniquePrefixes), "Number of unique prefixes in set doesn't match expected")
+
+			// Verify each expected prefix is in the set
+			for _, expected := range tt.expected {
+				found := false
+				for _, elem := range elements {
+					if !elem.IntervalEnd {
+						ip := netip.AddrFrom4(*(*[4]byte)(elem.Key))
+						if expected.Contains(ip) {
+							found = true
+							break
+						}
+					}
+				}
+				assert.True(t, found, "Expected prefix %s not found in set", expected)
+			}
+
+			r.conn.DelSet(set)
+			if err := r.conn.Flush(); err != nil {
+				t.Logf("Failed to delete set: %v", err)
+				printNftSets()
+			}
+			require.NoError(t, err, "Failed to delete set")
+		})
+	}
+}
+
+func verifyRule(t *testing.T, rule *nftables.Rule, sources []netip.Prefix, destination netip.Prefix, proto firewall.Protocol, sPort, dPort *firewall.Port, direction firewall.RuleDirection, action firewall.Action, expectSet bool) {
+	t.Helper()
+
+	assert.NotNil(t, rule, "Rule should not be nil")
+
+	// Verify sources and destination
+	if expectSet {
+		assert.True(t, containsSetLookup(rule.Exprs), "Rule should contain set lookup for multiple sources")
+	} else if len(sources) == 1 && sources[0].Bits() != 0 {
+		if direction == firewall.RuleDirectionIN {
+			assert.True(t, containsCIDRMatcher(rule.Exprs, sources[0], true), "Rule should contain source CIDR matcher for %s", sources[0])
+		} else {
+			assert.True(t, containsCIDRMatcher(rule.Exprs, sources[0], false), "Rule should contain destination CIDR matcher for %s", sources[0])
+		}
+	}
+
+	if direction == firewall.RuleDirectionIN {
+		assert.True(t, containsCIDRMatcher(rule.Exprs, destination, false), "Rule should contain destination CIDR matcher for %s", destination)
+	} else {
+		assert.True(t, containsCIDRMatcher(rule.Exprs, destination, true), "Rule should contain source CIDR matcher for %s", destination)
+	}
+
+	// Verify protocol
+	if proto != firewall.ProtocolALL {
+		assert.True(t, containsProtocol(rule.Exprs, proto), "Rule should contain protocol matcher for %s", proto)
+	}
+
+	// Verify ports
+	if sPort != nil {
+		assert.True(t, containsPort(rule.Exprs, sPort, true), "Rule should contain source port matcher for %v", sPort)
+	}
+	if dPort != nil {
+		assert.True(t, containsPort(rule.Exprs, dPort, false), "Rule should contain destination port matcher for %v", dPort)
+	}
+
+	// Verify action
+	assert.True(t, containsAction(rule.Exprs, action), "Rule should contain correct action: %s", action)
+}
+
+func containsSetLookup(exprs []expr.Any) bool {
+	for _, e := range exprs {
+		if _, ok := e.(*expr.Lookup); ok {
+			return true
+		}
+	}
+	return false
+}
+
+func containsCIDRMatcher(exprs []expr.Any, prefix netip.Prefix, isSource bool) bool {
+	var offset uint32
+	if isSource {
+		offset = 12 // src offset
+	} else {
+		offset = 16 // dst offset
+	}
+
+	var payloadFound, bitwiseFound, cmpFound bool
+	for _, e := range exprs {
+		switch ex := e.(type) {
+		case *expr.Payload:
+			if ex.Base == expr.PayloadBaseNetworkHeader && ex.Offset == offset && ex.Len == 4 {
+				payloadFound = true
+			}
+		case *expr.Bitwise:
+			if ex.Len == 4 && len(ex.Mask) == 4 && len(ex.Xor) == 4 {
+				bitwiseFound = true
+			}
+		case *expr.Cmp:
+			if ex.Op == expr.CmpOpEq && len(ex.Data) == 4 {
+				cmpFound = true
+			}
+		}
+	}
+	return (payloadFound && bitwiseFound && cmpFound) || prefix.Bits() == 0
+}
+
+func containsPort(exprs []expr.Any, port *firewall.Port, isSource bool) bool {
+	var offset uint32 = 2 // Default offset for destination port
+	if isSource {
+		offset = 0 // Offset for source port
+	}
+
+	var payloadFound, portMatchFound bool
+	for _, e := range exprs {
+		switch ex := e.(type) {
+		case *expr.Payload:
+			if ex.Base == expr.PayloadBaseTransportHeader && ex.Offset == offset && ex.Len == 2 {
+				payloadFound = true
+			}
+		case *expr.Cmp:
+			if port.IsRange {
+				if ex.Op == expr.CmpOpGte || ex.Op == expr.CmpOpLte {
+					portMatchFound = true
+				}
+			} else {
+				if ex.Op == expr.CmpOpEq && len(ex.Data) == 2 {
+					portValue := binary.BigEndian.Uint16(ex.Data)
+					for _, p := range port.Values {
+						if uint16(p) == portValue {
+							portMatchFound = true
+							break
+						}
+					}
+				}
+			}
+		}
+		if payloadFound && portMatchFound {
+			return true
+		}
+	}
+	return false
+}
+
+func containsProtocol(exprs []expr.Any, proto firewall.Protocol) bool {
+	var metaFound, cmpFound bool
+	expectedProto, _ := protoToInt(proto)
+	for _, e := range exprs {
+		switch ex := e.(type) {
+		case *expr.Meta:
+			if ex.Key == expr.MetaKeyL4PROTO {
+				metaFound = true
+			}
+		case *expr.Cmp:
+			if ex.Op == expr.CmpOpEq && len(ex.Data) == 1 && ex.Data[0] == expectedProto {
+				cmpFound = true
+			}
+		}
+	}
+	return metaFound && cmpFound
+}
+
+func containsAction(exprs []expr.Any, action firewall.Action) bool {
+	for _, e := range exprs {
+		if verdict, ok := e.(*expr.Verdict); ok {
+			switch action {
+			case firewall.ActionAccept:
+				return verdict.Kind == expr.VerdictAccept
+			case firewall.ActionDrop:
+				return verdict.Kind == expr.VerdictDrop
+			}
+		}
+	}
+	return false
+}
+
 // check returns the firewall type based on common lib checks. It returns UNKNOWN if no firewall is found.
 func check() int {
 	nf := nftables.Conn{}
@@ -250,12 +685,12 @@ func createWorkTable() (*nftables.Table, error) {
 	}
 
 	for _, t := range tables {
-		if t.Name == tableName {
+		if t.Name == tableNameNetbird {
 			sConn.DelTable(t)
 		}
 	}
 
-	table := sConn.AddTable(&nftables.Table{Name: tableName, Family: nftables.TableFamilyIPv4})
+	table := sConn.AddTable(&nftables.Table{Name: tableNameNetbird, Family: nftables.TableFamilyIPv4})
 	err = sConn.Flush()
 
 	return table, err
@@ -273,7 +708,7 @@ func deleteWorkTable() {
 	}
 
 	for _, t := range tables {
-		if t.Name == tableName {
+		if t.Name == tableNameNetbird {
 			sConn.DelTable(t)
 		}
 	}

client/firewall/test/cases_linux.go

@@ -1,8 +1,10 @@
-//go:build !android
-
 package test
 
-import firewall "github.com/netbirdio/netbird/client/firewall/manager"
+import (
+	"net/netip"
+
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+)
 
 var (
 	InsertRuleTestCases = []struct {
@@ -13,8 +15,8 @@ var (
 			Name: "Insert Forwarding IPV4 Rule",
 			InputPair: firewall.RouterPair{
 				ID:          "zxa",
-				Source:      "100.100.100.1/32",
-				Destination: "100.100.200.0/24",
+				Source:      netip.MustParsePrefix("100.100.100.1/32"),
+				Destination: netip.MustParsePrefix("100.100.200.0/24"),
 				Masquerade:  false,
 			},
 		},
@@ -22,8 +24,8 @@ var (
 			Name: "Insert Forwarding And Nat IPV4 Rules",
 			InputPair: firewall.RouterPair{
 				ID:          "zxa",
-				Source:      "100.100.100.1/32",
-				Destination: "100.100.200.0/24",
+				Source:      netip.MustParsePrefix("100.100.100.1/32"),
+				Destination: netip.MustParsePrefix("100.100.200.0/24"),
 				Masquerade:  true,
 			},
 		},
@@ -38,8 +40,8 @@ var (
 			Name: "Remove Forwarding And Nat IPV4 Rules",
 			InputPair: firewall.RouterPair{
 				ID:          "zxa",
-				Source:      "100.100.100.1/32",
-				Destination: "100.100.200.0/24",
+				Source:      netip.MustParsePrefix("100.100.100.1/32"),
+				Destination: netip.MustParsePrefix("100.100.200.0/24"),
 				Masquerade:  true,
 			},
 		},

client/firewall/uspfilter/allow_netbird_windows.go

@@ -64,15 +64,18 @@ func manageFirewallRule(ruleName string, action action, extraArgs ...string) err
 	if action == addRule {
 		args = append(args, extraArgs...)
 	}
-
-	cmd := exec.Command("netsh", args...)
+	netshCmd := GetSystem32Command("netsh")
+	cmd := exec.Command(netshCmd, args...)
 	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
 	return cmd.Run()
 }
 
 func isWindowsFirewallReachable() bool {
 	args := []string{"advfirewall", "show", "allprofiles", "state"}
-	cmd := exec.Command("netsh", args...)
+
+	netshCmd := GetSystem32Command("netsh")
+
+	cmd := exec.Command(netshCmd, args...)
 	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
 
 	_, err := cmd.Output()
@@ -87,8 +90,23 @@ func isWindowsFirewallReachable() bool {
 func isFirewallRuleActive(ruleName string) bool {
 	args := []string{"advfirewall", "firewall", "show", "rule", "name=" + ruleName}
 
-	cmd := exec.Command("netsh", args...)
+	netshCmd := GetSystem32Command("netsh")
+
+	cmd := exec.Command(netshCmd, args...)
 	cmd.SysProcAttr = &syscall.SysProcAttr{HideWindow: true}
 	_, err := cmd.Output()
 	return err == nil
 }
+
+// GetSystem32Command checks if a command can be found in the system path and returns it. In case it can't find it
+// in the path it will return the full path of a command assuming C:\windows\system32 as the base path.
+func GetSystem32Command(command string) string {
+	_, err := exec.LookPath(command)
+	if err == nil {
+		return command
+	}
+
+	log.Tracef("Command %s not found in PATH, using C:\\windows\\system32\\%s.exe path", command, command)
+
+	return "C:\\windows\\system32\\" + command + ".exe"
+}

client/firewall/uspfilter/uspfilter.go

@@ -3,6 +3,7 @@ package uspfilter
 import (
 	"fmt"
 	"net"
+	"net/netip"
 	"sync"
 
 	"github.com/google/gopacket"
@@ -11,7 +12,8 @@ import (
 	log "github.com/sirupsen/logrus"
 
 	firewall "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/client/iface"
+	"github.com/netbirdio/netbird/client/iface/device"
 )
 
 const layerTypeAll = 0
@@ -22,7 +24,7 @@ var (
 
 // IFaceMapper defines subset methods of interface required for manager
 type IFaceMapper interface {
-	SetFilter(iface.PacketFilter) error
+	SetFilter(device.PacketFilter) error
 	Address() iface.WGAddress
 }
 
@@ -103,26 +105,26 @@ func (m *Manager) IsServerRouteSupported() bool {
 	}
 }
 
-func (m *Manager) InsertRoutingRules(pair firewall.RouterPair) error {
+func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	if m.nativeFirewall == nil {
 		return errRouteNotSupported
 	}
-	return m.nativeFirewall.InsertRoutingRules(pair)
+	return m.nativeFirewall.AddNatRule(pair)
 }
 
-// RemoveRoutingRules removes a routing firewall rule
-func (m *Manager) RemoveRoutingRules(pair firewall.RouterPair) error {
+// RemoveNatRule removes a routing firewall rule
+func (m *Manager) RemoveNatRule(pair firewall.RouterPair) error {
 	if m.nativeFirewall == nil {
 		return errRouteNotSupported
 	}
-	return m.nativeFirewall.RemoveRoutingRules(pair)
+	return m.nativeFirewall.RemoveNatRule(pair)
 }
 
-// AddFiltering rule to the firewall
+// AddPeerFiltering rule to the firewall
 //
 // If comment argument is empty firewall manager should set
 // rule ID as comment for the rule
-func (m *Manager) AddFiltering(
+func (m *Manager) AddPeerFiltering(
 	ip net.IP,
 	proto firewall.Protocol,
 	sPort *firewall.Port,
@@ -188,8 +190,22 @@ func (m *Manager) AddFiltering(
 	return []firewall.Rule{&r}, nil
 }
 
-// DeleteRule from the firewall by rule definition
-func (m *Manager) DeleteRule(rule firewall.Rule) error {
+func (m *Manager) AddRouteFiltering(sources [] netip.Prefix, destination netip.Prefix, proto firewall.Protocol, sPort *firewall.Port, dPort *firewall.Port, action firewall.Action ) (firewall.Rule, error) {
+	if m.nativeFirewall == nil {
+		return nil, errRouteNotSupported
+	}
+	return m.nativeFirewall.AddRouteFiltering(sources, destination, proto, sPort, dPort, action)
+}
+
+func (m *Manager) DeleteRouteRule(rule firewall.Rule) error {
+	if m.nativeFirewall == nil {
+		return errRouteNotSupported
+	}
+	return m.nativeFirewall.DeleteRouteRule(rule)
+}
+
+// DeletePeerRule from the firewall by rule definition
+func (m *Manager) DeletePeerRule(rule firewall.Rule) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
@@ -215,6 +231,11 @@ func (m *Manager) DeleteRule(rule firewall.Rule) error {
 	return nil
 }
 
+// SetLegacyManagement doesn't need to be implemented for this manager
+func (m *Manager) SetLegacyManagement(_ bool) error {
+	return nil
+}
+
 // Flush doesn't need to be implemented for this manager
 func (m *Manager) Flush() error { return nil }
 
@@ -337,7 +358,6 @@ func validateRule(ip net.IP, packetData []byte, rules map[string]Rule, d *decode
 			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
 		}
@@ -396,7 +416,7 @@ func (m *Manager) RemovePacketHook(hookID string) error {
 		for _, r := range arr {
 			if r.id == hookID {
 				rule := r
-				return m.DeleteRule(&rule)
+				return m.DeletePeerRule(&rule)
 			}
 		}
 	}
@@ -404,7 +424,7 @@ func (m *Manager) RemovePacketHook(hookID string) error {
 		for _, r := range arr {
 			if r.id == hookID {
 				rule := r
-				return m.DeleteRule(&rule)
+				return m.DeletePeerRule(&rule)
 			}
 		}
 	}

client/firewall/uspfilter/uspfilter_test.go

@@ -11,15 +11,16 @@ import (
 	"github.com/stretchr/testify/require"
 
 	fw "github.com/netbirdio/netbird/client/firewall/manager"
-	"github.com/netbirdio/netbird/iface"
+	"github.com/netbirdio/netbird/client/iface"
+	"github.com/netbirdio/netbird/client/iface/device"
 )
 
 type IFaceMock struct {
-	SetFilterFunc func(iface.PacketFilter) error
+	SetFilterFunc func(device.PacketFilter) error
 	AddressFunc   func() iface.WGAddress
 }
 
-func (i *IFaceMock) SetFilter(iface iface.PacketFilter) error {
+func (i *IFaceMock) SetFilter(iface device.PacketFilter) error {
 	if i.SetFilterFunc == nil {
 		return fmt.Errorf("not implemented")
 	}
@@ -35,7 +36,7 @@ func (i *IFaceMock) Address() iface.WGAddress {
 
 func TestManagerCreate(t *testing.T) {
 	ifaceMock := &IFaceMock{
-		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
 	m, err := Create(ifaceMock)
@@ -49,10 +50,10 @@ func TestManagerCreate(t *testing.T) {
 	}
 }
 
-func TestManagerAddFiltering(t *testing.T) {
+func TestManagerAddPeerFiltering(t *testing.T) {
 	isSetFilterCalled := false
 	ifaceMock := &IFaceMock{
-		SetFilterFunc: func(iface.PacketFilter) error {
+		SetFilterFunc: func(device.PacketFilter) error {
 			isSetFilterCalled = true
 			return nil
 		},
@@ -71,7 +72,7 @@ func TestManagerAddFiltering(t *testing.T) {
 	action := fw.ActionDrop
 	comment := "Test rule"
 
-	rule, err := m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	rule, err := m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
@@ -90,7 +91,7 @@ func TestManagerAddFiltering(t *testing.T) {
 
 func TestManagerDeleteRule(t *testing.T) {
 	ifaceMock := &IFaceMock{
-		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
 	m, err := Create(ifaceMock)
@@ -106,7 +107,7 @@ func TestManagerDeleteRule(t *testing.T) {
 	action := fw.ActionDrop
 	comment := "Test rule"
 
-	rule, err := m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	rule, err := m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
@@ -119,14 +120,14 @@ func TestManagerDeleteRule(t *testing.T) {
 	action = fw.ActionDrop
 	comment = "Test rule 2"
 
-	rule2, err := m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	rule2, err := m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
 	}
 
 	for _, r := range rule {
-		err = m.DeleteRule(r)
+		err = m.DeletePeerRule(r)
 		if err != nil {
 			t.Errorf("failed to delete rule: %v", err)
 			return
@@ -140,7 +141,7 @@ func TestManagerDeleteRule(t *testing.T) {
 	}
 
 	for _, r := range rule2 {
-		err = m.DeleteRule(r)
+		err = m.DeletePeerRule(r)
 		if err != nil {
 			t.Errorf("failed to delete rule: %v", err)
 			return
@@ -236,7 +237,7 @@ func TestAddUDPPacketHook(t *testing.T) {
 
 func TestManagerReset(t *testing.T) {
 	ifaceMock := &IFaceMock{
-		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
 	m, err := Create(ifaceMock)
@@ -252,7 +253,7 @@ func TestManagerReset(t *testing.T) {
 	action := fw.ActionDrop
 	comment := "Test rule"
 
-	_, err = m.AddFiltering(ip, proto, nil, port, direction, action, "", comment)
+	_, err = m.AddPeerFiltering(ip, proto, nil, port, direction, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
@@ -271,7 +272,7 @@ func TestManagerReset(t *testing.T) {
 
 func TestNotMatchByIP(t *testing.T) {
 	ifaceMock := &IFaceMock{
-		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
 	m, err := Create(ifaceMock)
@@ -290,7 +291,7 @@ func TestNotMatchByIP(t *testing.T) {
 	action := fw.ActionAccept
 	comment := "Test rule"
 
-	_, err = m.AddFiltering(ip, proto, nil, nil, direction, action, "", comment)
+	_, err = m.AddPeerFiltering(ip, proto, nil, nil, direction, action, "", comment)
 	if err != nil {
 		t.Errorf("failed to add filtering: %v", err)
 		return
@@ -339,7 +340,7 @@ func TestNotMatchByIP(t *testing.T) {
 func TestRemovePacketHook(t *testing.T) {
 	// creating mock iface
 	iface := &IFaceMock{
-		SetFilterFunc: func(iface.PacketFilter) error { return nil },
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
 	}
 
 	// creating manager instance
@@ -388,7 +389,7 @@ func TestUSPFilterCreatePerformance(t *testing.T) {
 		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 },
+				SetFilterFunc: func(device.PacketFilter) error { return nil },
 			}
 			manager, err := Create(ifaceMock)
 			require.NoError(t, err)
@@ -406,9 +407,9 @@ func TestUSPFilterCreatePerformance(t *testing.T) {
 			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")
+					_, err = manager.AddPeerFiltering(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")
+					_, err = manager.AddPeerFiltering(ip, "tcp", nil, port, fw.RuleDirectionIN, fw.ActionAccept, "", "accept HTTP traffic")
 				}
 
 				require.NoError(t, err, "failed to add rule")

client/iface/bind/bind.go

@@ -28,11 +28,14 @@ type ICEBind struct {
 
 	transportNet transport.Net
 	udpMux       *UniversalUDPMuxDefault
+
+	filterFn FilterFn
 }
 
-func NewICEBind(transportNet transport.Net) *ICEBind {
+func NewICEBind(transportNet transport.Net, filterFn FilterFn) *ICEBind {
 	ib := &ICEBind{
 		transportNet: transportNet,
+		filterFn:     filterFn,
 	}
 
 	rc := receiverCreator{
@@ -59,8 +62,9 @@ func (s *ICEBind) createIPv4ReceiverFn(ipv4MsgsPool *sync.Pool, pc *ipv4.PacketC
 
 	s.udpMux = NewUniversalUDPMuxDefault(
 		UniversalUDPMuxParams{
-			UDPConn: conn,
-			Net:     s.transportNet,
+			UDPConn:  conn,
+			Net:      s.transportNet,
+			FilterFn: s.filterFn,
 		},
 	)
 	return func(bufs [][]byte, sizes []int, eps []wgConn.Endpoint) (n int, err error) {

client/iface/bind/udp_mux_universal.go

@@ -8,6 +8,8 @@ import (
 	"context"
 	"fmt"
 	"net"
+	"net/netip"
+	"sync"
 	"time"
 
 	log "github.com/sirupsen/logrus"
@@ -17,6 +19,10 @@ import (
 	"github.com/pion/transport/v3"
 )
 
+// FilterFn is a function that filters out candidates based on the address.
+// If it returns true, the address is to be filtered. It also returns the prefix of matching route.
+type FilterFn func(address netip.Addr) (bool, netip.Prefix, error)
+
 // UniversalUDPMuxDefault handles STUN and TURN servers packets by wrapping the original UDPConn
 // It then passes packets to the UDPMux that does the actual connection muxing.
 type UniversalUDPMuxDefault struct {
@@ -34,6 +40,7 @@ type UniversalUDPMuxParams struct {
 	UDPConn               net.PacketConn
 	XORMappedAddrCacheTTL time.Duration
 	Net                   transport.Net
+	FilterFn              FilterFn
 }
 
 // NewUniversalUDPMuxDefault creates an implementation of UniversalUDPMux embedding UDPMux
@@ -56,6 +63,7 @@ func NewUniversalUDPMuxDefault(params UniversalUDPMuxParams) *UniversalUDPMuxDef
 		PacketConn: params.UDPConn,
 		mux:        m,
 		logger:     params.Logger,
+		filterFn:   params.FilterFn,
 	}
 
 	// embed UDPMux
@@ -105,8 +113,68 @@ func (m *UniversalUDPMuxDefault) ReadFromConn(ctx context.Context) {
 // udpConn is a wrapper around UDPMux conn that overrides ReadFrom and handles STUN/TURN packets
 type udpConn struct {
 	net.PacketConn
-	mux    *UniversalUDPMuxDefault
-	logger logging.LeveledLogger
+	mux      *UniversalUDPMuxDefault
+	logger   logging.LeveledLogger
+	filterFn FilterFn
+	// TODO: reset cache on route changes
+	addrCache sync.Map
+}
+
+func (u *udpConn) WriteTo(b []byte, addr net.Addr) (int, error) {
+	if u.filterFn == nil {
+		return u.PacketConn.WriteTo(b, addr)
+	}
+
+	if isRouted, found := u.addrCache.Load(addr.String()); found {
+		return u.handleCachedAddress(isRouted.(bool), b, addr)
+	}
+
+	return u.handleUncachedAddress(b, addr)
+}
+
+func (u *udpConn) handleCachedAddress(isRouted bool, b []byte, addr net.Addr) (int, error) {
+	if isRouted {
+		return 0, fmt.Errorf("address %s is part of a routed network, refusing to write", addr)
+	}
+	return u.PacketConn.WriteTo(b, addr)
+}
+
+func (u *udpConn) handleUncachedAddress(b []byte, addr net.Addr) (int, error) {
+	if err := u.performFilterCheck(addr); err != nil {
+		return 0, err
+	}
+	return u.PacketConn.WriteTo(b, addr)
+}
+
+func (u *udpConn) performFilterCheck(addr net.Addr) error {
+	host, err := getHostFromAddr(addr)
+	if err != nil {
+		log.Errorf("Failed to get host from address %s: %v", addr, err)
+		return nil
+	}
+
+	a, err := netip.ParseAddr(host)
+	if err != nil {
+		log.Errorf("Failed to parse address %s: %v", addr, err)
+		return nil
+	}
+
+	if isRouted, prefix, err := u.filterFn(a); err != nil {
+		log.Errorf("Failed to check if address %s is routed: %v", addr, err)
+	} else {
+		u.addrCache.Store(addr.String(), isRouted)
+		if isRouted {
+			// Extra log, as the error only shows up with ICE logging enabled
+			log.Infof("Address %s is part of routed network %s, refusing to write", addr, prefix)
+			return fmt.Errorf("address %s is part of routed network %s, refusing to write", addr, prefix)
+		}
+	}
+	return nil
+}
+
+func getHostFromAddr(addr net.Addr) (string, error) {
+	host, _, err := net.SplitHostPort(addr.String())
+	return host, err
 }
 
 // GetSharedConn returns the shared udp conn

client/iface/configurer/err.go

@@ -0,0 +1,5 @@
+package configurer
+
+import "errors"
+
+var ErrPeerNotFound = errors.New("peer not found")

client/iface/configurer/kernel_unix.go

@@ -1,6 +1,6 @@
-//go:build linux && !android
+//go:build (linux && !android) || freebsd
 
-package iface
+package configurer
 
 import (
 	"fmt"
@@ -12,18 +12,17 @@ import (
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 )
 
-type wgKernelConfigurer struct {
+type KernelConfigurer struct {
 	deviceName string
 }
 
-func newWGConfigurer(deviceName string) wgConfigurer {
-	wgc := &wgKernelConfigurer{
+func NewKernelConfigurer(deviceName string) *KernelConfigurer {
+	return &KernelConfigurer{
 		deviceName: deviceName,
 	}
-	return wgc
 }
 
-func (c *wgKernelConfigurer) configureInterface(privateKey string, port int) error {
+func (c *KernelConfigurer) ConfigureInterface(privateKey string, port int) error {
 	log.Debugf("adding Wireguard private key")
 	key, err := wgtypes.ParseKey(privateKey)
 	if err != nil {
@@ -44,7 +43,7 @@ func (c *wgKernelConfigurer) configureInterface(privateKey string, port int) err
 	return nil
 }
 
-func (c *wgKernelConfigurer) updatePeer(peerKey string, allowedIps string, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
+func (c *KernelConfigurer) UpdatePeer(peerKey string, allowedIps string, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
 	// parse allowed ips
 	_, ipNet, err := net.ParseCIDR(allowedIps)
 	if err != nil {
@@ -56,8 +55,9 @@ func (c *wgKernelConfigurer) updatePeer(peerKey string, allowedIps string, keepA
 		return err
 	}
 	peer := wgtypes.PeerConfig{
-		PublicKey:                   peerKeyParsed,
-		ReplaceAllowedIPs:           true,
+		PublicKey:         peerKeyParsed,
+		ReplaceAllowedIPs: false,
+		// don't replace allowed ips, wg will handle duplicated peer IP
 		AllowedIPs:                  []net.IPNet{*ipNet},
 		PersistentKeepaliveInterval: &keepAlive,
 		Endpoint:                    endpoint,
@@ -74,7 +74,7 @@ func (c *wgKernelConfigurer) updatePeer(peerKey string, allowedIps string, keepA
 	return nil
 }
 
-func (c *wgKernelConfigurer) removePeer(peerKey string) error {
+func (c *KernelConfigurer) RemovePeer(peerKey string) error {
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
 	if err != nil {
 		return err
@@ -95,7 +95,7 @@ func (c *wgKernelConfigurer) removePeer(peerKey string) error {
 	return nil
 }
 
-func (c *wgKernelConfigurer) addAllowedIP(peerKey string, allowedIP string) error {
+func (c *KernelConfigurer) AddAllowedIP(peerKey string, allowedIP string) error {
 	_, ipNet, err := net.ParseCIDR(allowedIP)
 	if err != nil {
 		return err
@@ -122,20 +122,20 @@ func (c *wgKernelConfigurer) addAllowedIP(peerKey string, allowedIP string) erro
 	return nil
 }
 
-func (c *wgKernelConfigurer) removeAllowedIP(peerKey string, allowedIP string) error {
+func (c *KernelConfigurer) RemoveAllowedIP(peerKey string, allowedIP string) error {
 	_, ipNet, err := net.ParseCIDR(allowedIP)
 	if err != nil {
-		return err
+		return fmt.Errorf("parse allowed IP: %w", err)
 	}
 
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
 	if err != nil {
-		return err
+		return fmt.Errorf("parse peer key: %w", err)
 	}
 
 	existingPeer, err := c.getPeer(c.deviceName, peerKey)
 	if err != nil {
-		return err
+		return fmt.Errorf("get peer: %w", err)
 	}
 
 	newAllowedIPs := existingPeer.AllowedIPs
@@ -159,36 +159,36 @@ func (c *wgKernelConfigurer) removeAllowedIP(peerKey string, allowedIP string) e
 	}
 	err = c.configure(config)
 	if err != nil {
-		return fmt.Errorf(`received error "%w" while removing allowed IP from peer on interface %s with settings: allowed ips %s`, err, c.deviceName, allowedIP)
+		return fmt.Errorf("remove allowed IP %s on interface %s: %w", allowedIP, c.deviceName, err)
 	}
 	return nil
 }
 
-func (c *wgKernelConfigurer) getPeer(ifaceName, peerPubKey string) (wgtypes.Peer, error) {
+func (c *KernelConfigurer) getPeer(ifaceName, peerPubKey string) (wgtypes.Peer, error) {
 	wg, err := wgctrl.New()
 	if err != nil {
-		return wgtypes.Peer{}, err
+		return wgtypes.Peer{}, fmt.Errorf("wgctl: %w", err)
 	}
 	defer func() {
 		err = wg.Close()
 		if err != nil {
-			log.Errorf("got error while closing wgctl: %v", err)
+			log.Errorf("Got error while closing wgctl: %v", err)
 		}
 	}()
 
 	wgDevice, err := wg.Device(ifaceName)
 	if err != nil {
-		return wgtypes.Peer{}, err
+		return wgtypes.Peer{}, fmt.Errorf("get device %s: %w", ifaceName, err)
 	}
 	for _, peer := range wgDevice.Peers {
 		if peer.PublicKey.String() == peerPubKey {
 			return peer, nil
 		}
 	}
-	return wgtypes.Peer{}, fmt.Errorf("peer not found")
+	return wgtypes.Peer{}, ErrPeerNotFound
 }
 
-func (c *wgKernelConfigurer) configure(config wgtypes.Config) error {
+func (c *KernelConfigurer) configure(config wgtypes.Config) error {
 	wg, err := wgctrl.New()
 	if err != nil {
 		return err
@@ -200,15 +200,14 @@ func (c *wgKernelConfigurer) configure(config wgtypes.Config) error {
 	if err != nil {
 		return err
 	}
-	log.Tracef("got Wireguard device %s", c.deviceName)
 
 	return wg.ConfigureDevice(c.deviceName, config)
 }
 
-func (c *wgKernelConfigurer) close() {
+func (c *KernelConfigurer) Close() {
 }
 
-func (c *wgKernelConfigurer) getStats(peerKey string) (WGStats, error) {
+func (c *KernelConfigurer) GetStats(peerKey string) (WGStats, error) {
 	peer, err := c.getPeer(c.deviceName, peerKey)
 	if err != nil {
 		return WGStats{}, fmt.Errorf("get wireguard stats: %w", err)

client/iface/configurer/name.go

@@ -1,7 +1,6 @@
-//go:build linux || windows
-// +build linux windows
+//go:build linux || windows || freebsd
 
-package iface
+package configurer
 
 // WgInterfaceDefault is a default interface name of Wiretrustee
 const WgInterfaceDefault = "wt0"

client/iface/configurer/name_darwin.go

@@ -1,7 +1,6 @@
 //go:build darwin
-// +build darwin
 
-package iface
+package configurer
 
 // WgInterfaceDefault is a default interface name of Wiretrustee
 const WgInterfaceDefault = "utun100"

client/iface/configurer/uapi.go

@@ -1,6 +1,6 @@
 //go:build !windows
 
-package iface
+package configurer
 
 import (
 	"net"

client/iface/configurer/uapi_windows.go

@@ -1,4 +1,4 @@
-package iface
+package configurer
 
 import (
 	"net"

client/iface/configurer/usp.go

@@ -1,4 +1,4 @@
-package iface
+package configurer
 
 import (
 	"encoding/hex"
@@ -17,15 +17,17 @@ import (
 	nbnet "github.com/netbirdio/netbird/util/net"
 )
 
-type wgUSPConfigurer struct {
+var ErrAllowedIPNotFound = fmt.Errorf("allowed IP not found")
+
+type WGUSPConfigurer struct {
 	device     *device.Device
 	deviceName string
 
 	uapiListener net.Listener
 }
 
-func newWGUSPConfigurer(device *device.Device, deviceName string) wgConfigurer {
-	wgCfg := &wgUSPConfigurer{
+func NewUSPConfigurer(device *device.Device, deviceName string) *WGUSPConfigurer {
+	wgCfg := &WGUSPConfigurer{
 		device:     device,
 		deviceName: deviceName,
 	}
@@ -33,7 +35,7 @@ func newWGUSPConfigurer(device *device.Device, deviceName string) wgConfigurer {
 	return wgCfg
 }
 
-func (c *wgUSPConfigurer) configureInterface(privateKey string, port int) error {
+func (c *WGUSPConfigurer) ConfigureInterface(privateKey string, port int) error {
 	log.Debugf("adding Wireguard private key")
 	key, err := wgtypes.ParseKey(privateKey)
 	if err != nil {
@@ -50,7 +52,7 @@ func (c *wgUSPConfigurer) configureInterface(privateKey string, port int) error
 	return c.device.IpcSet(toWgUserspaceString(config))
 }
 
-func (c *wgUSPConfigurer) updatePeer(peerKey string, allowedIps string, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
+func (c *WGUSPConfigurer) UpdatePeer(peerKey string, allowedIps string, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
 	// parse allowed ips
 	_, ipNet, err := net.ParseCIDR(allowedIps)
 	if err != nil {
@@ -62,8 +64,9 @@ func (c *wgUSPConfigurer) updatePeer(peerKey string, allowedIps string, keepAliv
 		return err
 	}
 	peer := wgtypes.PeerConfig{
-		PublicKey:                   peerKeyParsed,
-		ReplaceAllowedIPs:           true,
+		PublicKey:         peerKeyParsed,
+		ReplaceAllowedIPs: false,
+		// don't replace allowed ips, wg will handle duplicated peer IP
 		AllowedIPs:                  []net.IPNet{*ipNet},
 		PersistentKeepaliveInterval: &keepAlive,
 		PresharedKey:                preSharedKey,
@@ -77,7 +80,7 @@ func (c *wgUSPConfigurer) updatePeer(peerKey string, allowedIps string, keepAliv
 	return c.device.IpcSet(toWgUserspaceString(config))
 }
 
-func (c *wgUSPConfigurer) removePeer(peerKey string) error {
+func (c *WGUSPConfigurer) RemovePeer(peerKey string) error {
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
 	if err != nil {
 		return err
@@ -94,7 +97,7 @@ func (c *wgUSPConfigurer) removePeer(peerKey string) error {
 	return c.device.IpcSet(toWgUserspaceString(config))
 }
 
-func (c *wgUSPConfigurer) addAllowedIP(peerKey string, allowedIP string) error {
+func (c *WGUSPConfigurer) AddAllowedIP(peerKey string, allowedIP string) error {
 	_, ipNet, err := net.ParseCIDR(allowedIP)
 	if err != nil {
 		return err
@@ -118,7 +121,7 @@ func (c *wgUSPConfigurer) addAllowedIP(peerKey string, allowedIP string) error {
 	return c.device.IpcSet(toWgUserspaceString(config))
 }
 
-func (c *wgUSPConfigurer) removeAllowedIP(peerKey string, ip string) error {
+func (c *WGUSPConfigurer) RemoveAllowedIP(peerKey string, ip string) error {
 	ipc, err := c.device.IpcGet()
 	if err != nil {
 		return err
@@ -132,7 +135,13 @@ func (c *wgUSPConfigurer) removeAllowedIP(peerKey string, ip string) error {
 
 	lines := strings.Split(ipc, "\n")
 
-	output := ""
+	peer := wgtypes.PeerConfig{
+		PublicKey:         peerKeyParsed,
+		UpdateOnly:        true,
+		ReplaceAllowedIPs: true,
+		AllowedIPs:        []net.IPNet{},
+	}
+
 	foundPeer := false
 	removedAllowedIP := false
 	for _, line := range lines {
@@ -156,23 +165,27 @@ func (c *wgUSPConfigurer) removeAllowedIP(peerKey string, ip string) error {
 		}
 
 		// Append the line to the output string
-		if strings.HasPrefix(line, "private_key=") || strings.HasPrefix(line, "listen_port=") ||
-			strings.HasPrefix(line, "public_key=") || strings.HasPrefix(line, "preshared_key=") ||
-			strings.HasPrefix(line, "endpoint=") || strings.HasPrefix(line, "persistent_keepalive_interval=") ||
-			strings.HasPrefix(line, "allowed_ip=") {
-			output += line + "\n"
+		if foundPeer && strings.HasPrefix(line, "allowed_ip=") {
+			allowedIP := strings.TrimPrefix(line, "allowed_ip=")
+			_, ipNet, err := net.ParseCIDR(allowedIP)
+			if err != nil {
+				return err
+			}
+			peer.AllowedIPs = append(peer.AllowedIPs, *ipNet)
 		}
 	}
 
 	if !removedAllowedIP {
-		return fmt.Errorf("allowedIP not found")
-	} else {
-		return c.device.IpcSet(output)
+		return ErrAllowedIPNotFound
 	}
+	config := wgtypes.Config{
+		Peers: []wgtypes.PeerConfig{peer},
+	}
+	return c.device.IpcSet(toWgUserspaceString(config))
 }
 
 // startUAPI starts the UAPI listener for managing the WireGuard interface via external tool
-func (t *wgUSPConfigurer) startUAPI() {
+func (t *WGUSPConfigurer) startUAPI() {
 	var err error
 	t.uapiListener, err = openUAPI(t.deviceName)
 	if err != nil {
@@ -194,7 +207,7 @@ func (t *wgUSPConfigurer) startUAPI() {
 	}(t.uapiListener)
 }
 
-func (t *wgUSPConfigurer) close() {
+func (t *WGUSPConfigurer) Close() {
 	if t.uapiListener != nil {
 		err := t.uapiListener.Close()
 		if err != nil {
@@ -210,7 +223,7 @@ func (t *wgUSPConfigurer) close() {
 	}
 }
 
-func (t *wgUSPConfigurer) getStats(peerKey string) (WGStats, error) {
+func (t *WGUSPConfigurer) GetStats(peerKey string) (WGStats, error) {
 	ipc, err := t.device.IpcGet()
 	if err != nil {
 		return WGStats{}, fmt.Errorf("ipc get: %w", err)
@@ -291,7 +304,7 @@ func findPeerInfo(ipcInput string, peerKey string, searchConfigKeys []string) (m
 		}
 	}
 	if !foundPeer {
-		return nil, fmt.Errorf("peer not found: %s", peerKey)
+		return nil, fmt.Errorf("%w: %s", ErrPeerNotFound, peerKey)
 	}
 
 	return configFound, nil

client/iface/configurer/usp_test.go

@@ -1,4 +1,4 @@
-package iface
+package configurer
 
 import (
 	"encoding/hex"

client/iface/configurer/wgstats.go

@@ -0,0 +1,9 @@
+package configurer
+
+import "time"
+
+type WGStats struct {
+	LastHandshake time.Time
+	TxBytes       int64
+	RxBytes       int64
+}

client/iface/device.go

@@ -0,0 +1,18 @@
+//go:build !android
+
+package iface
+
+import (
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/device"
+)
+
+type WGTunDevice interface {
+	Create() (device.WGConfigurer, error)
+	Up() (*bind.UniversalUDPMuxDefault, error)
+	UpdateAddr(address WGAddress) error
+	WgAddress() WGAddress
+	DeviceName() string
+	Close() error
+	FilteredDevice() *device.FilteredDevice
+}

client/iface/device/adapter.go

@@ -1,7 +1,8 @@
-package iface
+package device
 
 // TunAdapter is an interface for create tun device from external service
 type TunAdapter interface {
 	ConfigureInterface(address string, mtu int, dns string, searchDomains string, routes string) (int, error)
 	UpdateAddr(address string) error
+	ProtectSocket(fd int32) bool
 }

client/iface/device/address.go

@@ -0,0 +1,29 @@
+package device
+
+import (
+	"fmt"
+	"net"
+)
+
+// WGAddress WireGuard parsed address
+type WGAddress struct {
+	IP      net.IP
+	Network *net.IPNet
+}
+
+// ParseWGAddress parse a string ("1.2.3.4/24") address to WG Address
+func ParseWGAddress(address string) (WGAddress, error) {
+	ip, network, err := net.ParseCIDR(address)
+	if err != nil {
+		return WGAddress{}, err
+	}
+	return WGAddress{
+		IP:      ip,
+		Network: network,
+	}, nil
+}
+
+func (addr WGAddress) String() string {
+	maskSize, _ := addr.Network.Mask.Size()
+	return fmt.Sprintf("%s/%d", addr.IP.String(), maskSize)
+}

client/iface/device/args.go

@@ -1,4 +1,4 @@
-package iface
+package device
 
 type MobileIFaceArguments struct {
 	TunAdapter TunAdapter // only for Android

client/iface/device/device_android.go

@@ -1,7 +1,6 @@
 //go:build android
-// +build android
 
-package iface
+package device
 
 import (
 	"strings"
@@ -12,11 +11,12 @@ import (
 	"golang.zx2c4.com/wireguard/device"
 	"golang.zx2c4.com/wireguard/tun"
 
-	"github.com/netbirdio/netbird/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/configurer"
 )
 
-// ignore the wgTunDevice interface on Android because the creation of the tun device is different on this platform
-type wgTunDevice struct {
+// WGTunDevice ignore the WGTunDevice interface on Android because the creation of the tun device is different on this platform
+type WGTunDevice struct {
 	address    WGAddress
 	port       int
 	key        string
@@ -24,25 +24,25 @@ type wgTunDevice struct {
 	iceBind    *bind.ICEBind
 	tunAdapter TunAdapter
 
-	name       string
-	device     *device.Device
-	wrapper    *DeviceWrapper
-	udpMux     *bind.UniversalUDPMuxDefault
-	configurer wgConfigurer
+	name           string
+	device         *device.Device
+	filteredDevice *FilteredDevice
+	udpMux         *bind.UniversalUDPMuxDefault
+	configurer     WGConfigurer
 }
 
-func newTunDevice(address WGAddress, port int, key string, mtu int, transportNet transport.Net, tunAdapter TunAdapter) wgTunDevice {
-	return wgTunDevice{
+func NewTunDevice(address WGAddress, port int, key string, mtu int, transportNet transport.Net, tunAdapter TunAdapter, filterFn bind.FilterFn) *WGTunDevice {
+	return &WGTunDevice{
 		address:    address,
 		port:       port,
 		key:        key,
 		mtu:        mtu,
-		iceBind:    bind.NewICEBind(transportNet),
+		iceBind:    bind.NewICEBind(transportNet, filterFn),
 		tunAdapter: tunAdapter,
 	}
 }
 
-func (t *wgTunDevice) Create(routes []string, dns string, searchDomains []string) (wgConfigurer, error) {
+func (t *WGTunDevice) Create(routes []string, dns string, searchDomains []string) (WGConfigurer, error) {
 	log.Info("create tun interface")
 
 	routesString := routesToString(routes)
@@ -61,24 +61,24 @@ func (t *wgTunDevice) Create(routes []string, dns string, searchDomains []string
 		return nil, err
 	}
 	t.name = name
-	t.wrapper = newDeviceWrapper(tunDevice)
+	t.filteredDevice = newDeviceFilter(tunDevice)
 
 	log.Debugf("attaching to interface %v", name)
-	t.device = device.NewDevice(t.wrapper, t.iceBind, device.NewLogger(device.LogLevelSilent, "[wiretrustee] "))
+	t.device = device.NewDevice(t.filteredDevice, t.iceBind, device.NewLogger(wgLogLevel(), "[wiretrustee] "))
 	// without this property mobile devices can discover remote endpoints if the configured one was wrong.
 	// this helps with support for the older NetBird clients that had a hardcoded direct mode
 	// t.device.DisableSomeRoamingForBrokenMobileSemantics()
 
-	t.configurer = newWGUSPConfigurer(t.device, t.name)
-	err = t.configurer.configureInterface(t.key, t.port)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()
-		t.configurer.close()
+		t.configurer.Close()
 		return nil, err
 	}
 	return t.configurer, nil
 }
-func (t *wgTunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
+func (t *WGTunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
 	err := t.device.Up()
 	if err != nil {
 		return nil, err
@@ -93,14 +93,14 @@ func (t *wgTunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
 	return udpMux, nil
 }
 
-func (t *wgTunDevice) UpdateAddr(addr WGAddress) error {
+func (t *WGTunDevice) UpdateAddr(addr WGAddress) error {
 	// todo implement
 	return nil
 }
 
-func (t *wgTunDevice) Close() error {
+func (t *WGTunDevice) Close() error {
 	if t.configurer != nil {
-		t.configurer.close()
+		t.configurer.Close()
 	}
 
 	if t.device != nil {
@@ -115,20 +115,20 @@ func (t *wgTunDevice) Close() error {
 	return nil
 }
 
-func (t *wgTunDevice) Device() *device.Device {
+func (t *WGTunDevice) Device() *device.Device {
 	return t.device
 }
 
-func (t *wgTunDevice) DeviceName() string {
+func (t *WGTunDevice) DeviceName() string {
 	return t.name
 }
 
-func (t *wgTunDevice) WgAddress() WGAddress {
+func (t *WGTunDevice) WgAddress() WGAddress {
 	return t.address
 }
 
-func (t *wgTunDevice) Wrapper() *DeviceWrapper {
-	return t.wrapper
+func (t *WGTunDevice) FilteredDevice() *FilteredDevice {
+	return t.filteredDevice
 }
 
 func routesToString(routes []string) string {

client/iface/device/device_darwin.go

@@ -0,0 +1,141 @@
+//go:build !ios
+
+package device
+
+import (
+	"fmt"
+	"os/exec"
+
+	"github.com/pion/transport/v3"
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/tun"
+
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/configurer"
+)
+
+type TunDevice struct {
+	name    string
+	address WGAddress
+	port    int
+	key     string
+	mtu     int
+	iceBind *bind.ICEBind
+
+	device         *device.Device
+	filteredDevice *FilteredDevice
+	udpMux         *bind.UniversalUDPMuxDefault
+	configurer     WGConfigurer
+}
+
+func NewTunDevice(name string, address WGAddress, port int, key string, mtu int, transportNet transport.Net, filterFn bind.FilterFn) *TunDevice {
+	return &TunDevice{
+		name:    name,
+		address: address,
+		port:    port,
+		key:     key,
+		mtu:     mtu,
+		iceBind: bind.NewICEBind(transportNet, filterFn),
+	}
+}
+
+func (t *TunDevice) Create() (WGConfigurer, error) {
+	tunDevice, err := tun.CreateTUN(t.name, t.mtu)
+	if err != nil {
+		return nil, fmt.Errorf("error creating tun device: %s", err)
+	}
+	t.filteredDevice = newDeviceFilter(tunDevice)
+
+	// We need to create a wireguard-go device and listen to configuration requests
+	t.device = device.NewDevice(
+		t.filteredDevice,
+		t.iceBind,
+		device.NewLogger(wgLogLevel(), "[netbird] "),
+	)
+
+	err = t.assignAddr()
+	if err != nil {
+		t.device.Close()
+		return nil, fmt.Errorf("error assigning ip: %s", err)
+	}
+
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	err = t.configurer.ConfigureInterface(t.key, t.port)
+	if err != nil {
+		t.device.Close()
+		t.configurer.Close()
+		return nil, fmt.Errorf("error configuring interface: %s", err)
+	}
+	return t.configurer, nil
+}
+
+func (t *TunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
+	err := t.device.Up()
+	if err != nil {
+		return nil, err
+	}
+
+	udpMux, err := t.iceBind.GetICEMux()
+	if err != nil {
+		return nil, err
+	}
+	t.udpMux = udpMux
+	log.Debugf("device is ready to use: %s", t.name)
+	return udpMux, nil
+}
+
+func (t *TunDevice) UpdateAddr(address WGAddress) error {
+	t.address = address
+	return t.assignAddr()
+}
+
+func (t *TunDevice) Close() error {
+	if t.configurer != nil {
+		t.configurer.Close()
+	}
+
+	if t.device != nil {
+		t.device.Close()
+		t.device = nil
+	}
+
+	if t.udpMux != nil {
+		return t.udpMux.Close()
+	}
+	return nil
+}
+
+func (t *TunDevice) WgAddress() WGAddress {
+	return t.address
+}
+
+func (t *TunDevice) DeviceName() string {
+	return t.name
+}
+
+func (t *TunDevice) FilteredDevice() *FilteredDevice {
+	return t.filteredDevice
+}
+
+// assignAddr Adds IP address to the tunnel interface and network route based on the range provided
+func (t *TunDevice) assignAddr() error {
+	cmd := exec.Command("ifconfig", t.name, "inet", t.address.IP.String(), t.address.IP.String())
+	if out, err := cmd.CombinedOutput(); err != nil {
+		log.Errorf("adding address command '%v' failed with output: %s", cmd.String(), out)
+		return err
+	}
+
+	// dummy ipv6 so routing works
+	cmd = exec.Command("ifconfig", t.name, "inet6", "fe80::/64")
+	if out, err := cmd.CombinedOutput(); err != nil {
+		log.Debugf("adding address command '%v' failed with output: %s", cmd.String(), out)
+	}
+
+	routeCmd := exec.Command("route", "add", "-net", t.address.Network.String(), "-interface", t.name)
+	if out, err := routeCmd.CombinedOutput(); err != nil {
+		log.Errorf("adding route command '%v' failed with output: %s", routeCmd.String(), out)
+		return err
+	}
+	return nil
+}

client/iface/device/device_filter.go

@@ -1,4 +1,4 @@
-package iface
+package device
 
 import (
 	"net"
@@ -28,22 +28,23 @@ type PacketFilter interface {
 	SetNetwork(*net.IPNet)
 }
 
-// DeviceWrapper to override Read or Write of packets
-type DeviceWrapper struct {
+// FilteredDevice to override Read or Write of packets
+type FilteredDevice struct {
 	tun.Device
+
 	filter PacketFilter
 	mutex  sync.RWMutex
 }
 
-// newDeviceWrapper constructor function
-func newDeviceWrapper(device tun.Device) *DeviceWrapper {
-	return &DeviceWrapper{
+// newDeviceFilter constructor function
+func newDeviceFilter(device tun.Device) *FilteredDevice {
+	return &FilteredDevice{
 		Device: device,
 	}
 }
 
 // Read wraps read method with filtering feature
-func (d *DeviceWrapper) Read(bufs [][]byte, sizes []int, offset int) (n int, err error) {
+func (d *FilteredDevice) Read(bufs [][]byte, sizes []int, offset int) (n int, err error) {
 	if n, err = d.Device.Read(bufs, sizes, offset); err != nil {
 		return 0, err
 	}
@@ -68,7 +69,7 @@ func (d *DeviceWrapper) Read(bufs [][]byte, sizes []int, offset int) (n int, err
 }
 
 // Write wraps write method with filtering feature
-func (d *DeviceWrapper) Write(bufs [][]byte, offset int) (int, error) {
+func (d *FilteredDevice) Write(bufs [][]byte, offset int) (int, error) {
 	d.mutex.RLock()
 	filter := d.filter
 	d.mutex.RUnlock()
@@ -92,7 +93,7 @@ func (d *DeviceWrapper) Write(bufs [][]byte, offset int) (int, error) {
 }
 
 // SetFilter sets packet filter to device
-func (d *DeviceWrapper) SetFilter(filter PacketFilter) {
+func (d *FilteredDevice) SetFilter(filter PacketFilter) {
 	d.mutex.Lock()
 	d.filter = filter
 	d.mutex.Unlock()

client/iface/device/device_filter_test.go

@@ -1,4 +1,4 @@
-package iface
+package device
 
 import (
 	"net"
@@ -7,7 +7,8 @@ import (
 	"github.com/golang/mock/gomock"
 	"github.com/google/gopacket"
 	"github.com/google/gopacket/layers"
-	mocks "github.com/netbirdio/netbird/iface/mocks"
+
+	mocks "github.com/netbirdio/netbird/client/iface/mocks"
 )
 
 func TestDeviceWrapperRead(t *testing.T) {
@@ -51,7 +52,7 @@ func TestDeviceWrapperRead(t *testing.T) {
 				return 1, nil
 			})
 
-		wrapped := newDeviceWrapper(tun)
+		wrapped := newDeviceFilter(tun)
 
 		bufs := [][]byte{{}}
 		sizes := []int{0}
@@ -99,7 +100,7 @@ func TestDeviceWrapperRead(t *testing.T) {
 		tun := mocks.NewMockDevice(ctrl)
 		tun.EXPECT().Write(mockBufs, 0).Return(1, nil)
 
-		wrapped := newDeviceWrapper(tun)
+		wrapped := newDeviceFilter(tun)
 
 		bufs := [][]byte{buffer.Bytes()}
 
@@ -147,7 +148,7 @@ func TestDeviceWrapperRead(t *testing.T) {
 		filter := mocks.NewMockPacketFilter(ctrl)
 		filter.EXPECT().DropIncoming(gomock.Any()).Return(true)
 
-		wrapped := newDeviceWrapper(tun)
+		wrapped := newDeviceFilter(tun)
 		wrapped.filter = filter
 
 		bufs := [][]byte{buffer.Bytes()}
@@ -202,7 +203,7 @@ func TestDeviceWrapperRead(t *testing.T) {
 		filter := mocks.NewMockPacketFilter(ctrl)
 		filter.EXPECT().DropOutgoing(gomock.Any()).Return(true)
 
-		wrapped := newDeviceWrapper(tun)
+		wrapped := newDeviceFilter(tun)
 		wrapped.filter = filter
 
 		bufs := [][]byte{{}}

client/iface/device/device_ios.go

@@ -1,7 +1,7 @@
 //go:build ios
 // +build ios
 
-package iface
+package device
 
 import (
 	"os"
@@ -12,10 +12,11 @@ import (
 	"golang.zx2c4.com/wireguard/device"
 	"golang.zx2c4.com/wireguard/tun"
 
-	"github.com/netbirdio/netbird/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/configurer"
 )
 
-type tunDevice struct {
+type TunDevice struct {
 	name    string
 	address WGAddress
 	port    int
@@ -23,24 +24,24 @@ type tunDevice struct {
 	iceBind *bind.ICEBind
 	tunFd   int
 
-	device     *device.Device
-	wrapper    *DeviceWrapper
-	udpMux     *bind.UniversalUDPMuxDefault
-	configurer wgConfigurer
+	device         *device.Device
+	filteredDevice *FilteredDevice
+	udpMux         *bind.UniversalUDPMuxDefault
+	configurer     WGConfigurer
 }
 
-func newTunDevice(name string, address WGAddress, port int, key string, transportNet transport.Net, tunFd int) *tunDevice {
-	return &tunDevice{
+func NewTunDevice(name string, address WGAddress, port int, key string, transportNet transport.Net, tunFd int, filterFn bind.FilterFn) *TunDevice {
+	return &TunDevice{
 		name:    name,
 		address: address,
 		port:    port,
 		key:     key,
-		iceBind: bind.NewICEBind(transportNet),
+		iceBind: bind.NewICEBind(transportNet, filterFn),
 		tunFd:   tunFd,
 	}
 }
 
-func (t *tunDevice) Create() (wgConfigurer, error) {
+func (t *TunDevice) Create() (WGConfigurer, error) {
 	log.Infof("create tun interface")
 
 	dupTunFd, err := unix.Dup(t.tunFd)
@@ -62,24 +63,24 @@ func (t *tunDevice) Create() (wgConfigurer, error) {
 		return nil, err
 	}
 
-	t.wrapper = newDeviceWrapper(tunDevice)
+	t.filteredDevice = newDeviceFilter(tunDevice)
 	log.Debug("Attaching to interface")
-	t.device = device.NewDevice(t.wrapper, t.iceBind, device.NewLogger(device.LogLevelSilent, "[wiretrustee] "))
+	t.device = device.NewDevice(t.filteredDevice, t.iceBind, device.NewLogger(wgLogLevel(), "[wiretrustee] "))
 	// without this property mobile devices can discover remote endpoints if the configured one was wrong.
 	// this helps with support for the older NetBird clients that had a hardcoded direct mode
 	// t.device.DisableSomeRoamingForBrokenMobileSemantics()
 
-	t.configurer = newWGUSPConfigurer(t.device, t.name)
-	err = t.configurer.configureInterface(t.key, t.port)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()
-		t.configurer.close()
+		t.configurer.Close()
 		return nil, err
 	}
 	return t.configurer, nil
 }
 
-func (t *tunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
+func (t *TunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
 	err := t.device.Up()
 	if err != nil {
 		return nil, err
@@ -94,17 +95,17 @@ func (t *tunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
 	return udpMux, nil
 }
 
-func (t *tunDevice) Device() *device.Device {
+func (t *TunDevice) Device() *device.Device {
 	return t.device
 }
 
-func (t *tunDevice) DeviceName() string {
+func (t *TunDevice) DeviceName() string {
 	return t.name
 }
 
-func (t *tunDevice) Close() error {
+func (t *TunDevice) Close() error {
 	if t.configurer != nil {
-		t.configurer.close()
+		t.configurer.Close()
 	}
 
 	if t.device != nil {
@@ -119,15 +120,15 @@ func (t *tunDevice) Close() error {
 	return nil
 }
 
-func (t *tunDevice) WgAddress() WGAddress {
+func (t *TunDevice) WgAddress() WGAddress {
 	return t.address
 }
 
-func (t *tunDevice) UpdateAddr(addr WGAddress) error {
+func (t *TunDevice) UpdateAddr(addr WGAddress) error {
 	// todo implement
 	return nil
 }
 
-func (t *tunDevice) Wrapper() *DeviceWrapper {
-	return t.wrapper
+func (t *TunDevice) FilteredDevice() *FilteredDevice {
+	return t.filteredDevice
 }

client/iface/device/device_kernel_unix.go

@@ -0,0 +1,163 @@
+//go:build (linux && !android) || freebsd
+
+package device
+
+import (
+	"context"
+	"fmt"
+	"net"
+
+	"github.com/pion/transport/v3"
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/configurer"
+	"github.com/netbirdio/netbird/sharedsock"
+)
+
+type TunKernelDevice struct {
+	name         string
+	address      WGAddress
+	wgPort       int
+	key          string
+	mtu          int
+	ctx          context.Context
+	ctxCancel    context.CancelFunc
+	transportNet transport.Net
+
+	link       *wgLink
+	udpMuxConn net.PacketConn
+	udpMux     *bind.UniversalUDPMuxDefault
+
+	filterFn bind.FilterFn
+}
+
+func NewKernelDevice(name string, address WGAddress, wgPort int, key string, mtu int, transportNet transport.Net) *TunKernelDevice {
+	checkUser()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	return &TunKernelDevice{
+		ctx:          ctx,
+		ctxCancel:    cancel,
+		name:         name,
+		address:      address,
+		wgPort:       wgPort,
+		key:          key,
+		mtu:          mtu,
+		transportNet: transportNet,
+	}
+}
+
+func (t *TunKernelDevice) Create() (WGConfigurer, error) {
+	link := newWGLink(t.name)
+
+	if err := link.recreate(); err != nil {
+		return nil, fmt.Errorf("recreate: %w", err)
+	}
+
+	t.link = link
+
+	if err := t.assignAddr(); err != nil {
+		return nil, fmt.Errorf("assign addr: %w", err)
+	}
+
+	// TODO: do a MTU discovery
+	log.Debugf("setting MTU: %d interface: %s", t.mtu, t.name)
+
+	if err := link.setMTU(t.mtu); err != nil {
+		return nil, fmt.Errorf("set mtu: %w", err)
+	}
+
+	configurer := configurer.NewKernelConfigurer(t.name)
+
+	if err := configurer.ConfigureInterface(t.key, t.wgPort); err != nil {
+		return nil, fmt.Errorf("error configuring interface: %s", err)
+	}
+
+	return configurer, nil
+}
+
+func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
+	if t.udpMux != nil {
+		return t.udpMux, nil
+	}
+
+	if t.link == nil {
+		return nil, fmt.Errorf("device is not ready yet")
+	}
+
+	log.Debugf("bringing up interface: %s", t.name)
+
+	if err := t.link.up(); err != nil {
+		log.Errorf("error bringing up interface: %s", t.name)
+
+		return nil, err
+	}
+
+	rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter())
+	if err != nil {
+		return nil, err
+	}
+	bindParams := bind.UniversalUDPMuxParams{
+		UDPConn:  rawSock,
+		Net:      t.transportNet,
+		FilterFn: t.filterFn,
+	}
+	mux := bind.NewUniversalUDPMuxDefault(bindParams)
+	go mux.ReadFromConn(t.ctx)
+	t.udpMuxConn = rawSock
+	t.udpMux = mux
+
+	log.Debugf("device is ready to use: %s", t.name)
+	return t.udpMux, nil
+}
+
+func (t *TunKernelDevice) UpdateAddr(address WGAddress) error {
+	t.address = address
+	return t.assignAddr()
+}
+
+func (t *TunKernelDevice) Close() error {
+	if t.link == nil {
+		return nil
+	}
+
+	t.ctxCancel()
+
+	var closErr error
+	if err := t.link.Close(); err != nil {
+		log.Debugf("failed to close link: %s", err)
+		closErr = err
+	}
+
+	if t.udpMux != nil {
+		if err := t.udpMux.Close(); err != nil {
+			log.Debugf("failed to close udp mux: %s", err)
+			closErr = err
+		}
+
+		if err := t.udpMuxConn.Close(); err != nil {
+			log.Debugf("failed to close udp mux connection: %s", err)
+			closErr = err
+		}
+	}
+
+	return closErr
+}
+
+func (t *TunKernelDevice) WgAddress() WGAddress {
+	return t.address
+}
+
+func (t *TunKernelDevice) DeviceName() string {
+	return t.name
+}
+
+func (t *TunKernelDevice) FilteredDevice() *FilteredDevice {
+	return nil
+}
+
+// assignAddr Adds IP address to the tunnel interface
+func (t *TunKernelDevice) assignAddr() error {
+	return t.link.assignAddr(t.address)
+}

client/iface/device/device_netstack.go

@@ -0,0 +1,120 @@
+//go:build !android
+// +build !android
+
+package device
+
+import (
+	"fmt"
+
+	"github.com/pion/transport/v3"
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/device"
+
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/configurer"
+	"github.com/netbirdio/netbird/client/iface/netstack"
+)
+
+type TunNetstackDevice struct {
+	name          string
+	address       WGAddress
+	port          int
+	key           string
+	mtu           int
+	listenAddress string
+	iceBind       *bind.ICEBind
+
+	device         *device.Device
+	filteredDevice *FilteredDevice
+	nsTun          *netstack.NetStackTun
+	udpMux         *bind.UniversalUDPMuxDefault
+	configurer     WGConfigurer
+}
+
+func NewNetstackDevice(name string, address WGAddress, wgPort int, key string, mtu int, transportNet transport.Net, listenAddress string, filterFn bind.FilterFn) *TunNetstackDevice {
+	return &TunNetstackDevice{
+		name:          name,
+		address:       address,
+		port:          wgPort,
+		key:           key,
+		mtu:           mtu,
+		listenAddress: listenAddress,
+		iceBind:       bind.NewICEBind(transportNet, filterFn),
+	}
+}
+
+func (t *TunNetstackDevice) Create() (WGConfigurer, error) {
+	log.Info("create netstack tun interface")
+	t.nsTun = netstack.NewNetStackTun(t.listenAddress, t.address.IP.String(), t.mtu)
+	tunIface, err := t.nsTun.Create()
+	if err != nil {
+		return nil, fmt.Errorf("error creating tun device: %s", err)
+	}
+	t.filteredDevice = newDeviceFilter(tunIface)
+
+	t.device = device.NewDevice(
+		t.filteredDevice,
+		t.iceBind,
+		device.NewLogger(wgLogLevel(), "[netbird] "),
+	)
+
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	err = t.configurer.ConfigureInterface(t.key, t.port)
+	if err != nil {
+		_ = tunIface.Close()
+		return nil, fmt.Errorf("error configuring interface: %s", err)
+	}
+
+	log.Debugf("device has been created: %s", t.name)
+	return t.configurer, nil
+}
+
+func (t *TunNetstackDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
+	if t.device == nil {
+		return nil, fmt.Errorf("device is not ready yet")
+	}
+
+	err := t.device.Up()
+	if err != nil {
+		return nil, err
+	}
+
+	udpMux, err := t.iceBind.GetICEMux()
+	if err != nil {
+		return nil, err
+	}
+	t.udpMux = udpMux
+	log.Debugf("netstack device is ready to use")
+	return udpMux, nil
+}
+
+func (t *TunNetstackDevice) UpdateAddr(WGAddress) error {
+	return nil
+}
+
+func (t *TunNetstackDevice) Close() error {
+	if t.configurer != nil {
+		t.configurer.Close()
+	}
+
+	if t.device != nil {
+		t.device.Close()
+	}
+
+	if t.udpMux != nil {
+		return t.udpMux.Close()
+	}
+	return nil
+}
+
+func (t *TunNetstackDevice) WgAddress() WGAddress {
+	return t.address
+}
+
+func (t *TunNetstackDevice) DeviceName() string {
+	return t.name
+}
+
+func (t *TunNetstackDevice) FilteredDevice() *FilteredDevice {
+	return t.filteredDevice
+}

client/iface/device/device_usp_unix.go

@@ -0,0 +1,145 @@
+//go:build (linux && !android) || freebsd
+
+package device
+
+import (
+	"fmt"
+	"os"
+	"runtime"
+
+	"github.com/pion/transport/v3"
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/tun"
+
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/configurer"
+)
+
+type USPDevice struct {
+	name    string
+	address WGAddress
+	port    int
+	key     string
+	mtu     int
+	iceBind *bind.ICEBind
+
+	device         *device.Device
+	filteredDevice *FilteredDevice
+	udpMux         *bind.UniversalUDPMuxDefault
+	configurer     WGConfigurer
+}
+
+func NewUSPDevice(name string, address WGAddress, port int, key string, mtu int, transportNet transport.Net, filterFn bind.FilterFn) *USPDevice {
+	log.Infof("using userspace bind mode")
+
+	checkUser()
+
+	return &USPDevice{
+		name:    name,
+		address: address,
+		port:    port,
+		key:     key,
+		mtu:     mtu,
+		iceBind: bind.NewICEBind(transportNet, filterFn)}
+}
+
+func (t *USPDevice) Create() (WGConfigurer, error) {
+	log.Info("create tun interface")
+	tunIface, err := tun.CreateTUN(t.name, t.mtu)
+	if err != nil {
+		log.Debugf("failed to create tun interface (%s, %d): %s", t.name, t.mtu, err)
+		return nil, fmt.Errorf("error creating tun device: %s", err)
+	}
+	t.filteredDevice = newDeviceFilter(tunIface)
+
+	// We need to create a wireguard-go device and listen to configuration requests
+	t.device = device.NewDevice(
+		t.filteredDevice,
+		t.iceBind,
+		device.NewLogger(wgLogLevel(), "[netbird] "),
+	)
+
+	err = t.assignAddr()
+	if err != nil {
+		t.device.Close()
+		return nil, fmt.Errorf("error assigning ip: %s", err)
+	}
+
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	err = t.configurer.ConfigureInterface(t.key, t.port)
+	if err != nil {
+		t.device.Close()
+		t.configurer.Close()
+		return nil, fmt.Errorf("error configuring interface: %s", err)
+	}
+	return t.configurer, nil
+}
+
+func (t *USPDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
+	if t.device == nil {
+		return nil, fmt.Errorf("device is not ready yet")
+	}
+
+	err := t.device.Up()
+	if err != nil {
+		return nil, err
+	}
+
+	udpMux, err := t.iceBind.GetICEMux()
+	if err != nil {
+		return nil, err
+	}
+	t.udpMux = udpMux
+
+	log.Debugf("device is ready to use: %s", t.name)
+	return udpMux, nil
+}
+
+func (t *USPDevice) UpdateAddr(address WGAddress) error {
+	t.address = address
+	return t.assignAddr()
+}
+
+func (t *USPDevice) Close() error {
+	if t.configurer != nil {
+		t.configurer.Close()
+	}
+
+	if t.device != nil {
+		t.device.Close()
+	}
+
+	if t.udpMux != nil {
+		return t.udpMux.Close()
+	}
+	return nil
+}
+
+func (t *USPDevice) WgAddress() WGAddress {
+	return t.address
+}
+
+func (t *USPDevice) DeviceName() string {
+	return t.name
+}
+
+func (t *USPDevice) FilteredDevice() *FilteredDevice {
+	return t.filteredDevice
+}
+
+// assignAddr Adds IP address to the tunnel interface
+func (t *USPDevice) assignAddr() error {
+	link := newWGLink(t.name)
+
+	return link.assignAddr(t.address)
+}
+
+func checkUser() {
+	if runtime.GOOS == "freebsd" {
+		euid := os.Geteuid()
+		if euid != 0 {
+			log.Warn("newTunUSPDevice: on netbird must run as root to be able to assign address to the tun interface with ifconfig")
+		}
+	}
+}

client/iface/device/device_windows.go

@@ -1,4 +1,4 @@
-package iface
+package device
 
 import (
 	"fmt"
@@ -11,10 +11,13 @@ import (
 	"golang.zx2c4.com/wireguard/tun"
 	"golang.zx2c4.com/wireguard/windows/tunnel/winipcfg"
 
-	"github.com/netbirdio/netbird/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/configurer"
 )
 
-type tunDevice struct {
+const defaultWindowsGUIDSTring = "{f2f29e61-d91f-4d76-8151-119b20c4bdeb}"
+
+type TunDevice struct {
 	name    string
 	address WGAddress
 	port    int
@@ -24,35 +27,49 @@ type tunDevice struct {
 
 	device          *device.Device
 	nativeTunDevice *tun.NativeTun
-	wrapper         *DeviceWrapper
+	filteredDevice  *FilteredDevice
 	udpMux          *bind.UniversalUDPMuxDefault
-	configurer      wgConfigurer
+	configurer      WGConfigurer
 }
 
-func newTunDevice(name string, address WGAddress, port int, key string, mtu int, transportNet transport.Net) wgTunDevice {
-	return &tunDevice{
+func NewTunDevice(name string, address WGAddress, port int, key string, mtu int, transportNet transport.Net, filterFn bind.FilterFn) *TunDevice {
+	return &TunDevice{
 		name:    name,
 		address: address,
 		port:    port,
 		key:     key,
 		mtu:     mtu,
-		iceBind: bind.NewICEBind(transportNet),
+		iceBind: bind.NewICEBind(transportNet, filterFn),
 	}
 }
 
-func (t *tunDevice) Create() (wgConfigurer, error) {
-	tunDevice, err := tun.CreateTUN(t.name, t.mtu)
+func getGUID() (windows.GUID, error) {
+	guidString := defaultWindowsGUIDSTring
+	if CustomWindowsGUIDString != "" {
+		guidString = CustomWindowsGUIDString
+	}
+	return windows.GUIDFromString(guidString)
+}
+
+func (t *TunDevice) Create() (WGConfigurer, error) {
+	guid, err := getGUID()
 	if err != nil {
+		log.Errorf("failed to get GUID: %s", err)
 		return nil, err
 	}
+	log.Info("create tun interface")
+	tunDevice, err := tun.CreateTUNWithRequestedGUID(t.name, &guid, t.mtu)
+	if err != nil {
+		return nil, fmt.Errorf("error creating tun device: %s", err)
+	}
 	t.nativeTunDevice = tunDevice.(*tun.NativeTun)
-	t.wrapper = newDeviceWrapper(tunDevice)
+	t.filteredDevice = newDeviceFilter(tunDevice)
 
 	// We need to create a wireguard-go device and listen to configuration requests
 	t.device = device.NewDevice(
-		t.wrapper,
+		t.filteredDevice,
 		t.iceBind,
-		device.NewLogger(device.LogLevelSilent, "[netbird] "),
+		device.NewLogger(wgLogLevel(), "[netbird] "),
 	)
 
 	luid := winipcfg.LUID(t.nativeTunDevice.LUID())
@@ -73,20 +90,20 @@ func (t *tunDevice) Create() (wgConfigurer, error) {
 	err = t.assignAddr()
 	if err != nil {
 		t.device.Close()
-		return nil, err
+		return nil, fmt.Errorf("error assigning ip: %s", err)
 	}
 
-	t.configurer = newWGUSPConfigurer(t.device, t.name)
-	err = t.configurer.configureInterface(t.key, t.port)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()
-		t.configurer.close()
-		return nil, err
+		t.configurer.Close()
+		return nil, fmt.Errorf("error configuring interface: %s", err)
 	}
 	return t.configurer, nil
 }
 
-func (t *tunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
+func (t *TunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
 	err := t.device.Up()
 	if err != nil {
 		return nil, err
@@ -101,14 +118,14 @@ func (t *tunDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
 	return udpMux, nil
 }
 
-func (t *tunDevice) UpdateAddr(address WGAddress) error {
+func (t *TunDevice) UpdateAddr(address WGAddress) error {
 	t.address = address
 	return t.assignAddr()
 }
 
-func (t *tunDevice) Close() error {
+func (t *TunDevice) Close() error {
 	if t.configurer != nil {
-		t.configurer.close()
+		t.configurer.Close()
 	}
 
 	if t.device != nil {
@@ -122,19 +139,19 @@ func (t *tunDevice) Close() error {
 	}
 	return nil
 }
-func (t *tunDevice) WgAddress() WGAddress {
+func (t *TunDevice) WgAddress() WGAddress {
 	return t.address
 }
 
-func (t *tunDevice) DeviceName() string {
+func (t *TunDevice) DeviceName() string {
 	return t.name
 }
 
-func (t *tunDevice) Wrapper() *DeviceWrapper {
-	return t.wrapper
+func (t *TunDevice) FilteredDevice() *FilteredDevice {
+	return t.filteredDevice
 }
 
-func (t *tunDevice) getInterfaceGUIDString() (string, error) {
+func (t *TunDevice) GetInterfaceGUIDString() (string, error) {
 	if t.nativeTunDevice == nil {
 		return "", fmt.Errorf("interface has not been initialized yet")
 	}
@@ -148,7 +165,7 @@ func (t *tunDevice) getInterfaceGUIDString() (string, error) {
 }
 
 // assignAddr Adds IP address to the tunnel interface and network route based on the range provided
-func (t *tunDevice) assignAddr() error {
+func (t *TunDevice) assignAddr() error {
 	luid := winipcfg.LUID(t.nativeTunDevice.LUID())
 	log.Debugf("adding address %s to interface: %s", t.address.IP, t.name)
 	return luid.SetIPAddresses([]netip.Prefix{netip.MustParsePrefix(t.address.String())})

client/iface/device/interface.go

@@ -0,0 +1,20 @@
+package device
+
+import (
+	"net"
+	"time"
+
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	"github.com/netbirdio/netbird/client/iface/configurer"
+)
+
+type WGConfigurer interface {
+	ConfigureInterface(privateKey string, port int) error
+	UpdatePeer(peerKey string, allowedIps string, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error
+	RemovePeer(peerKey string) error
+	AddAllowedIP(peerKey string, allowedIP string) error
+	RemoveAllowedIP(peerKey string, allowedIP string) error
+	Close()
+	GetStats(peerKey string) (configurer.WGStats, error)
+}

client/iface/device/kernel_module.go

@@ -1,7 +1,6 @@
-//go:build !linux || android
-// +build !linux android
+//go:build (!linux && !freebsd) || android
 
-package iface
+package device
 
 // WireGuardModuleIsLoaded check if we can load WireGuard mod (linux only)
 func WireGuardModuleIsLoaded() bool {

client/iface/device/kernel_module_freebsd.go

@@ -0,0 +1,18 @@
+package device
+
+// WireGuardModuleIsLoaded check if kernel support wireguard
+func WireGuardModuleIsLoaded() bool {
+	// Despite the fact FreeBSD natively support Wireguard (https://github.com/WireGuard/wireguard-freebsd)
+	//  we are currently do not use it, since it is required to add wireguard kernel support to
+	//   - https://github.com/netbirdio/netbird/tree/main/sharedsock
+	//   - https://github.com/mdlayher/socket
+	// TODO: implement kernel space
+	return false
+}
+
+// ModuleTunIsLoaded check if tun module exist, if is not attempt to load it
+func ModuleTunIsLoaded() bool {
+	// Assume tun supported by freebsd kernel by default
+	// TODO: implement check for module loaded in kernel or build-it
+	return true
+}

client/iface/device/kernel_module_linux.go

@@ -1,7 +1,7 @@
 //go:build linux && !android
 
 // Package iface provides wireguard network interface creation and management
-package iface
+package device
 
 import (
 	"bufio"
@@ -66,8 +66,8 @@ func getModuleRoot() string {
 	return filepath.Join(moduleLibDir, string(uname.Release[:i]))
 }
 
-// tunModuleIsLoaded check if tun module exist, if is not attempt to load it
-func tunModuleIsLoaded() bool {
+// ModuleTunIsLoaded check if tun module exist, if is not attempt to load it
+func ModuleTunIsLoaded() bool {
 	_, err := os.Stat("/dev/net/tun")
 	if err == nil {
 		return true

client/iface/device/kernel_module_linux_test.go

@@ -1,4 +1,6 @@
-package iface
+//go:build linux && !android
+
+package device
 
 import (
 	"bufio"
@@ -132,7 +134,7 @@ func resetGlobals() {
 }
 
 func createFiles(t *testing.T) (string, []module) {
-    t.Helper()
+	t.Helper()
 	writeFile := func(path, text string) {
 		if err := os.WriteFile(path, []byte(text), 0644); err != nil {
 			t.Fatal(err)
@@ -168,7 +170,7 @@ func createFiles(t *testing.T) (string, []module) {
 }
 
 func getRandomLoadedModule(t *testing.T) (string, error) {
-    t.Helper()
+	t.Helper()
 	f, err := os.Open("/proc/modules")
 	if err != nil {
 		return "", err

client/iface/device/wg_link_freebsd.go

@@ -0,0 +1,81 @@
+package device
+
+import (
+	"fmt"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/iface/freebsd"
+)
+
+type wgLink struct {
+	name string
+	link *freebsd.Link
+}
+
+func newWGLink(name string) *wgLink {
+	link := freebsd.NewLink(name)
+
+	return &wgLink{
+		name: name,
+		link: link,
+	}
+}
+
+// Type returns the interface type
+func (l *wgLink) Type() string {
+	return "wireguard"
+}
+
+// Close deletes the link interface
+func (l *wgLink) Close() error {
+	return l.link.Del()
+}
+
+func (l *wgLink) recreate() error {
+	if err := l.link.Recreate(); err != nil {
+		return fmt.Errorf("recreate: %w", err)
+	}
+
+	return nil
+}
+
+func (l *wgLink) setMTU(mtu int) error {
+	if err := l.link.SetMTU(mtu); err != nil {
+		return fmt.Errorf("set mtu: %w", err)
+	}
+
+	return nil
+}
+
+func (l *wgLink) up() error {
+	if err := l.link.Up(); err != nil {
+		return fmt.Errorf("up: %w", err)
+	}
+
+	return nil
+}
+
+func (l *wgLink) assignAddr(address WGAddress) error {
+	link, err := freebsd.LinkByName(l.name)
+	if err != nil {
+		return fmt.Errorf("link by name: %w", err)
+	}
+
+	ip := address.IP.String()
+	mask := "0x" + address.Network.Mask.String()
+
+	log.Infof("assign addr %s mask %s to %s interface", ip, mask, l.name)
+
+	err = link.AssignAddr(ip, mask)
+	if err != nil {
+		return fmt.Errorf("assign addr: %w", err)
+	}
+
+	err = link.Up()
+	if err != nil {
+		return fmt.Errorf("up: %w", err)
+	}
+
+	return nil
+}

client/iface/device/wg_link_linux.go

@@ -0,0 +1,133 @@
+//go:build linux && !android
+
+package device
+
+import (
+	"fmt"
+	"os"
+
+	log "github.com/sirupsen/logrus"
+	"github.com/vishvananda/netlink"
+)
+
+type wgLink struct {
+	attrs *netlink.LinkAttrs
+}
+
+func newWGLink(name string) *wgLink {
+	attrs := netlink.NewLinkAttrs()
+	attrs.Name = name
+
+	return &wgLink{
+		attrs: &attrs,
+	}
+}
+
+// Attrs returns the Wireguard's default attributes
+func (l *wgLink) Attrs() *netlink.LinkAttrs {
+	return l.attrs
+}
+
+// Type returns the interface type
+func (l *wgLink) Type() string {
+	return "wireguard"
+}
+
+// Close deletes the link interface
+func (l *wgLink) Close() error {
+	return netlink.LinkDel(l)
+}
+
+func (l *wgLink) recreate() error {
+	name := l.attrs.Name
+
+	// check if interface exists
+	link, err := netlink.LinkByName(name)
+	if err != nil {
+		switch err.(type) {
+		case netlink.LinkNotFoundError:
+			break
+		default:
+			return fmt.Errorf("link by name: %w", err)
+		}
+	}
+
+	// remove if interface exists
+	if link != nil {
+		err = netlink.LinkDel(l)
+		if err != nil {
+			return err
+		}
+	}
+
+	log.Debugf("adding device: %s", name)
+	err = netlink.LinkAdd(l)
+	if os.IsExist(err) {
+		log.Infof("interface %s already exists. Will reuse.", name)
+	} else if err != nil {
+		return fmt.Errorf("link add: %w", err)
+	}
+
+	return nil
+}
+
+func (l *wgLink) setMTU(mtu int) error {
+	if err := netlink.LinkSetMTU(l, mtu); err != nil {
+		log.Errorf("error setting MTU on interface: %s", l.attrs.Name)
+
+		return fmt.Errorf("link set mtu: %w", err)
+	}
+
+	return nil
+}
+
+func (l *wgLink) up() error {
+	if err := netlink.LinkSetUp(l); err != nil {
+		log.Errorf("error bringing up interface: %s", l.attrs.Name)
+		return fmt.Errorf("link setup: %w", err)
+	}
+
+	return nil
+}
+
+func (l *wgLink) assignAddr(address WGAddress) error {
+	//delete existing addresses
+	list, err := netlink.AddrList(l, 0)
+	if err != nil {
+		return fmt.Errorf("list addr: %w", err)
+	}
+
+	if len(list) > 0 {
+		for _, a := range list {
+			addr := a
+			err = netlink.AddrDel(l, &addr)
+			if err != nil {
+				return fmt.Errorf("del addr: %w", err)
+			}
+		}
+	}
+
+	name := l.attrs.Name
+	addrStr := address.String()
+
+	log.Debugf("adding address %s to interface: %s", addrStr, name)
+
+	addr, err := netlink.ParseAddr(addrStr)
+	if err != nil {
+		return fmt.Errorf("parse addr: %w", err)
+	}
+
+	err = netlink.AddrAdd(l, addr)
+	if os.IsExist(err) {
+		log.Infof("interface %s already has the address: %s", name, addrStr)
+	} else if err != nil {
+		return fmt.Errorf("add addr: %w", err)
+	}
+
+	// On linux, the link must be brought up
+	if err := netlink.LinkSetUp(l); err != nil {
+		return fmt.Errorf("link setup: %w", err)
+	}
+
+	return nil
+}

client/iface/device/wg_log.go

@@ -0,0 +1,15 @@
+package device
+
+import (
+	"os"
+
+	"golang.zx2c4.com/wireguard/device"
+)
+
+func wgLogLevel() int {
+	if os.Getenv("NB_WG_DEBUG") == "true" {
+		return device.LogLevelVerbose
+	} else {
+		return device.LogLevelSilent
+	}
+}

client/iface/device/windows_guid.go

@@ -0,0 +1,4 @@
+package device
+
+// CustomWindowsGUIDString is a custom GUID string for the interface
+var CustomWindowsGUIDString string

client/iface/device_android.go

@@ -0,0 +1,16 @@
+package iface
+
+import (
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/device"
+)
+
+type WGTunDevice interface {
+	Create(routes []string, dns string, searchDomains []string) (device.WGConfigurer, error)
+	Up() (*bind.UniversalUDPMuxDefault, error)
+	UpdateAddr(address WGAddress) error
+	WgAddress() WGAddress
+	DeviceName() string
+	Close() error
+	FilteredDevice() *device.FilteredDevice
+}

client/iface/freebsd/errors.go

@@ -0,0 +1,8 @@
+package freebsd
+
+import "errors"
+
+var (
+	ErrDoesNotExist     = errors.New("does not exist")
+	ErrNameDoesNotMatch = errors.New("name does not match")
+)

client/iface/freebsd/iface.go

@@ -0,0 +1,108 @@
+package freebsd
+
+import (
+	"bufio"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+type iface struct {
+	Name    string
+	MTU     int
+	Group   string
+	IPAddrs []string
+}
+
+func parseError(output []byte) error {
+	// TODO: implement without allocations
+	lines := string(output)
+
+	if strings.Contains(lines, "does not exist") {
+		return ErrDoesNotExist
+	}
+
+	return nil
+}
+
+func parseIfconfigOutput(output []byte) (*iface, error) {
+	// TODO: implement without allocations
+	lines := string(output)
+
+	scanner := bufio.NewScanner(strings.NewReader(lines))
+
+	var name, mtu, group string
+	var ips []string
+
+	for scanner.Scan() {
+		line := scanner.Text()
+
+		// If line contains ": flags", it's a line with interface information
+		if strings.Contains(line, ": flags") {
+			parts := strings.Fields(line)
+			if len(parts) < 4 {
+				return nil, fmt.Errorf("failed to parse line: %s", line)
+			}
+			name = strings.TrimSuffix(parts[0], ":")
+			if strings.Contains(line, "mtu") {
+				mtuIndex := 0
+				for i, part := range parts {
+					if part == "mtu" {
+						mtuIndex = i
+						break
+					}
+				}
+				mtu = parts[mtuIndex+1]
+			}
+		}
+
+		// If line contains "groups:", it's a line with interface group
+		if strings.Contains(line, "groups:") {
+			parts := strings.Fields(line)
+			if len(parts) < 2 {
+				return nil, fmt.Errorf("failed to parse line: %s", line)
+			}
+			group = parts[1]
+		}
+
+		// If line contains "inet ", it's a line with IP address
+		if strings.Contains(line, "inet ") {
+			parts := strings.Fields(line)
+			if len(parts) < 2 {
+				return nil, fmt.Errorf("failed to parse line: %s", line)
+			}
+			ips = append(ips, parts[1])
+		}
+	}
+
+	if name == "" {
+		return nil, fmt.Errorf("interface name not found in ifconfig output")
+	}
+
+	mtuInt, err := strconv.Atoi(mtu)
+	if err != nil {
+		return nil, fmt.Errorf("failed to parse MTU: %w", err)
+	}
+
+	return &iface{
+		Name:    name,
+		MTU:     mtuInt,
+		Group:   group,
+		IPAddrs: ips,
+	}, nil
+}
+
+func parseIFName(output []byte) (string, error) {
+	// TODO: implement without allocations
+	lines := strings.Split(string(output), "\n")
+	if len(lines) == 0 || lines[0] == "" {
+		return "", fmt.Errorf("no output returned")
+	}
+
+	fields := strings.Fields(lines[0])
+	if len(fields) > 1 {
+		return "", fmt.Errorf("invalid output")
+	}
+
+	return fields[0], nil
+}

client/iface/freebsd/iface_internal_test.go

@@ -0,0 +1,76 @@
+package freebsd
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParseIfconfigOutput(t *testing.T) {
+	testOutput := `wg1: flags=8080<NOARP,MULTICAST> metric 0 mtu 1420
+    options=80000<LINKSTATE>
+    groups: wg
+    nd6 options=109<PERFORMNUD,IFDISABLED,NO_DAD>`
+
+	expected := &iface{
+		Name:  "wg1",
+		MTU:   1420,
+		Group: "wg",
+	}
+
+	result, err := parseIfconfigOutput(([]byte)(testOutput))
+	if err != nil {
+		t.Errorf("Error parsing ifconfig output: %v", err)
+		return
+	}
+
+	assert.Equal(t, expected.Name, result.Name, "Name should match")
+	assert.Equal(t, expected.MTU, result.MTU, "MTU should match")
+	assert.Equal(t, expected.Group, result.Group, "Group should match")
+}
+
+func TestParseIFName(t *testing.T) {
+	tests := []struct {
+		name        string
+		output      string
+		expected    string
+		expectedErr error
+	}{
+		{
+			name:     "ValidOutput",
+			output:   "eth0\n",
+			expected: "eth0",
+		},
+		{
+			name:     "ValidOutputOneLine",
+			output:   "eth0",
+			expected: "eth0",
+		},
+		{
+			name:        "EmptyOutput",
+			output:      "",
+			expectedErr: fmt.Errorf("no output returned"),
+		},
+		{
+			name:        "InvalidOutput",
+			output:      "This is an invalid output\n",
+			expectedErr: fmt.Errorf("invalid output"),
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			result, err := parseIFName(([]byte)(test.output))
+
+			assert.Equal(t, test.expected, result, "Interface names should match")
+
+			if test.expectedErr != nil {
+				assert.NotNil(t, err, "Error should not be nil")
+				assert.EqualError(t, err, test.expectedErr.Error(), "Error messages should match")
+			} else {
+				assert.Nil(t, err, "Error should be nil")
+			}
+		})
+	}
+}