Batch wireguard update operations

Avoid invalid disconnection notifications in case the closed race dials.
In this PR resolve multiple race condition questions. Easier to understand the fix based on commit by commit.

- Remove store dependency from notifier
- Enforce the notification orders
- Fix invalid disconnection notification
- Ensure the order of the events on the consumer side

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

@@ -37,16 +37,21 @@ If yes, which one?
 
 **Debug output**
 
-To help us resolve the problem, please attach the following debug output
+To help us resolve the problem, please attach the following anonymized status output
 
   netbird status -dA
 
-As well as the file created by
+Create and upload a debug bundle, and share the returned file key:
+
+  netbird debug for 1m -AS -U
+
+*Uploaded files are automatically deleted after 30 days.*
+
+
+Alternatively, create the file only and attach it here manually:
 
   netbird debug for 1m -AS
 
-  
-We advise reviewing the anonymized output for any remaining personal information.
 
 **Screenshots**
 
@@ -57,8 +62,10 @@ If applicable, add screenshots to help explain your problem.
 Add any other context about the problem here.
 
 **Have you tried these troubleshooting steps?**
+- [ ] Reviewed [client troubleshooting](https://docs.netbird.io/how-to/troubleshooting-client) (if applicable)
 - [ ] Checked for newer NetBird versions
 - [ ] Searched for similar issues on GitHub (including closed ones)
 - [ ] Restarted the NetBird client
 - [ ] Disabled other VPN software
 - [ ] Checked firewall settings
+

.github/pull_request_template.md

@@ -13,3 +13,5 @@
 - [ ] It is a refactor
 - [ ] Created tests that fail without the change (if possible)
 - [ ] Extended the README / documentation, if necessary
+
+> By submitting this pull request, you confirm that you have read and agree to the terms of the [Contributor License Agreement](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT.md).

.github/workflows/git-town.yml

@@ -16,6 +16,6 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: git-town/action@v1
+      - uses: git-town/action@v1.2.1
         with:
-          skip-single-stacks: true
+          skip-single-stacks: true

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

@@ -211,7 +211,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        arch: [ '386','amd64' ]
+        include:
+          - arch: "386"
+            raceFlag: ""
+          - arch: "amd64"
+            raceFlag: "-race"
     runs-on: ubuntu-22.04
     steps:
       - name: Install Go
@@ -223,6 +227,10 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Install dependencies
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: sudo apt update && sudo apt install -y gcc-multilib g++-multilib libc6-dev-i386
+
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV
@@ -247,9 +255,9 @@ jobs:
       - name: Test
         run: |
           CGO_ENABLED=1 GOARCH=${{ matrix.arch }} \
-          go test \
+          go test ${{ matrix.raceFlag }} \
             -exec 'sudo' \
-            -timeout 10m ./signal/...
+            -timeout 10m ./relay/...
 
   test_signal:
     name: "Signal / Unit"
@@ -269,6 +277,10 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
 
+      - name: Install dependencies
+        if: steps.cache.outputs.cache-hit != 'true'
+        run: sudo apt update && sudo apt install -y gcc-multilib g++-multilib libc6-dev-i386
+
       - name: Get Go environment
         run: |
           echo "cache=$(go env GOCACHE)" >> $GITHUB_ENV

.github/workflows/golangci-lint.yml

@@ -21,7 +21,6 @@ jobs:
         with:
           ignore_words_list: erro,clienta,hastable,iif,groupd,testin,groupe
           skip: go.mod,go.sum
-          only_warn: 1
   golangci:
     strategy:
       fail-fast: false

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

@@ -43,7 +43,7 @@ jobs:
       - name: gomobile init
         run: gomobile init
       - name: build android netbird lib
-        run: PATH=$PATH:$(go env GOPATH) gomobile bind -o $GITHUB_WORKSPACE/netbird.aar -javapkg=io.netbird.gomobile -ldflags="-X golang.zx2c4.com/wireguard/ipc.socketDirectory=/data/data/io.netbird.client/cache/wireguard -X github.com/netbirdio/netbird/version.version=buildtest"  $GITHUB_WORKSPACE/client/android
+        run: PATH=$PATH:$(go env GOPATH) gomobile bind -o $GITHUB_WORKSPACE/netbird.aar -javapkg=io.netbird.gomobile -ldflags="-checklinkname=0 -X golang.zx2c4.com/wireguard/ipc.socketDirectory=/data/data/io.netbird.client/cache/wireguard -X github.com/netbirdio/netbird/version.version=buildtest"  $GITHUB_WORKSPACE/client/android
         env:
           CGO_ENABLED: 0
           ANDROID_NDK_HOME: /usr/local/lib/android/sdk/ndk/23.1.7779620

.github/workflows/release.yml

@@ -9,7 +9,7 @@ on:
   pull_request:
 
 env:
-  SIGN_PIPE_VER: "v0.0.18"
+  SIGN_PIPE_VER: "v0.0.21"
   GORELEASER_VER: "v2.3.2"
   PRODUCT_NAME: "NetBird"
   COPYRIGHT: "NetBird GmbH"
@@ -65,6 +65,13 @@ jobs:
         with:
           username: ${{ secrets.DOCKER_USER }}
           password: ${{ secrets.DOCKER_TOKEN }}
+      - name: Log in to the GitHub container registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.CI_DOCKER_PUSH_GITHUB_TOKEN }}
       - name: Install OS build dependencies
         run: sudo apt update && sudo apt install -y -q gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu
 
@@ -224,3 +231,17 @@ jobs:
           ref: ${{ env.SIGN_PIPE_VER }}
           token: ${{ secrets.SIGN_GITHUB_TOKEN }}
           inputs: '{ "tag": "${{ github.ref }}", "skipRelease": false }'
+
+  post_on_forum:
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    needs: [trigger_signer]
+    steps:
+      - uses: Codixer/discourse-topic-github-release-action@v2.0.1
+        with:
+          discourse-api-key: ${{ secrets.DISCOURSE_RELEASES_API_KEY }}
+          discourse-base-url: https://forum.netbird.io
+          discourse-author-username: NetBird
+          discourse-category: 17
+          discourse-tags:
+            releases          

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

@@ -134,6 +134,7 @@ jobs:
           NETBIRD_STORE_ENGINE_MYSQL_DSN: '${{ env.NETBIRD_STORE_ENGINE_MYSQL_DSN }}$'
           CI_NETBIRD_MGMT_IDP_SIGNKEY_REFRESH: false
           CI_NETBIRD_TURN_EXTERNAL_IP: "1.2.3.4"
+          CI_NETBIRD_MGMT_DISABLE_DEFAULT_POLICY: false
 
         run: |
           set -x
@@ -172,13 +173,15 @@ jobs:
           grep "NETBIRD_STORE_ENGINE_MYSQL_DSN=$NETBIRD_STORE_ENGINE_MYSQL_DSN" docker-compose.yml
           grep NETBIRD_STORE_ENGINE_POSTGRES_DSN docker-compose.yml | egrep "$NETBIRD_STORE_ENGINE_POSTGRES_DSN"
           # check relay values
-          grep "NB_EXPOSED_ADDRESS=$CI_NETBIRD_DOMAIN:33445" docker-compose.yml
+          grep "NB_EXPOSED_ADDRESS=rels://$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 | grep "rels://$CI_NETBIRD_DOMAIN:33445"
           grep -A 7 Relay management.json | egrep '"Secret": ".+"'
           grep DisablePromptLogin management.json | grep 'true'
+          grep LoginFlag management.json | grep 0
+          grep DisableDefaultPolicy management.json | grep "$CI_NETBIRD_MGMT_DISABLE_DEFAULT_POLICY"
 
       - name: Install modules
         run: go mod tidy

.goreleaser.yaml

@@ -149,6 +149,7 @@ nfpms:
 dockers:
   - image_templates:
       - netbirdio/netbird:{{ .Version }}-amd64
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-amd64
     ids:
       - netbird
     goarch: amd64
@@ -164,6 +165,7 @@ dockers:
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/netbird:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm64v8
     ids:
       - netbird
     goarch: arm64
@@ -175,10 +177,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/netbird:{{ .Version }}-arm
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm
     ids:
       - netbird
     goarch: arm
@@ -191,11 +194,12 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
 
   - image_templates:
       - netbirdio/netbird:{{ .Version }}-rootless-amd64
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-amd64
     ids:
       - netbird
     goarch: amd64
@@ -207,9 +211,11 @@ dockers:
       - "--label=org.opencontainers.image.title={{.ProjectName}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/netbird:{{ .Version }}-rootless-arm64v8
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm64v8
     ids:
       - netbird
     goarch: arm64
@@ -221,9 +227,11 @@ dockers:
       - "--label=org.opencontainers.image.title={{.ProjectName}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/netbird:{{ .Version }}-rootless-arm
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm
     ids:
       - netbird
     goarch: arm
@@ -236,10 +244,12 @@ dockers:
       - "--label=org.opencontainers.image.title={{.ProjectName}}"
       - "--label=org.opencontainers.image.version={{.Version}}"
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
 
   - image_templates:
       - netbirdio/relay:{{ .Version }}-amd64
+      - ghcr.io/netbirdio/relay:{{ .Version }}-amd64
     ids:
       - netbird-relay
     goarch: amd64
@@ -251,10 +261,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/relay:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/relay:{{ .Version }}-arm64v8
     ids:
       - netbird-relay
     goarch: arm64
@@ -266,10 +277,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/relay:{{ .Version }}-arm
+      - ghcr.io/netbirdio/relay:{{ .Version }}-arm
     ids:
       - netbird-relay
     goarch: arm
@@ -282,10 +294,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/signal:{{ .Version }}-amd64
+      - ghcr.io/netbirdio/signal:{{ .Version }}-amd64
     ids:
       - netbird-signal
     goarch: amd64
@@ -297,10 +310,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/signal:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/signal:{{ .Version }}-arm64v8
     ids:
       - netbird-signal
     goarch: arm64
@@ -312,10 +326,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/signal:{{ .Version }}-arm
+      - ghcr.io/netbirdio/signal:{{ .Version }}-arm
     ids:
       - netbird-signal
     goarch: arm
@@ -328,10 +343,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/management:{{ .Version }}-amd64
+      - ghcr.io/netbirdio/management:{{ .Version }}-amd64
     ids:
       - netbird-mgmt
     goarch: amd64
@@ -343,10 +359,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/management:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/management:{{ .Version }}-arm64v8
     ids:
       - netbird-mgmt
     goarch: arm64
@@ -358,10 +375,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/management:{{ .Version }}-arm
+      - ghcr.io/netbirdio/management:{{ .Version }}-arm
     ids:
       - netbird-mgmt
     goarch: arm
@@ -374,10 +392,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/management:{{ .Version }}-debug-amd64
+      - ghcr.io/netbirdio/management:{{ .Version }}-debug-amd64
     ids:
       - netbird-mgmt
     goarch: amd64
@@ -389,10 +408,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/management:{{ .Version }}-debug-arm64v8
+      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm64v8
     ids:
       - netbird-mgmt
     goarch: arm64
@@ -404,11 +424,12 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
 
   - image_templates:
       - netbirdio/management:{{ .Version }}-debug-arm
+      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm
     ids:
       - netbird-mgmt
     goarch: arm
@@ -421,10 +442,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/upload:{{ .Version }}-amd64
+      - ghcr.io/netbirdio/upload:{{ .Version }}-amd64
     ids:
       - netbird-upload
     goarch: amd64
@@ -436,10 +458,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/upload:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/upload:{{ .Version }}-arm64v8
     ids:
       - netbird-upload
     goarch: arm64
@@ -451,10 +474,11 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
   - image_templates:
       - netbirdio/upload:{{ .Version }}-arm
+      - ghcr.io/netbirdio/upload:{{ .Version }}-arm
     ids:
       - netbird-upload
     goarch: arm
@@ -467,7 +491,7 @@ dockers:
       - "--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=org.opencontainers.image.source=https://github.com/netbirdio/{{.ProjectName}}"
       - "--label=maintainer=dev@netbird.io"
 docker_manifests:
   - name_template: netbirdio/netbird:{{ .Version }}
@@ -546,6 +570,84 @@ docker_manifests:
       - netbirdio/upload:{{ .Version }}-arm64v8
       - netbirdio/upload:{{ .Version }}-arm
       - netbirdio/upload:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/netbird:{{ .Version }}
+    image_templates:
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/netbird:latest
+    image_templates:
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-arm
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/netbird:{{ .Version }}-rootless
+    image_templates:
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm64v8
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-amd64
+
+  - name_template: ghcr.io/netbirdio/netbird:rootless-latest
+    image_templates:
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm64v8
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-arm
+      - ghcr.io/netbirdio/netbird:{{ .Version }}-rootless-amd64
+
+  - name_template: ghcr.io/netbirdio/relay:{{ .Version }}
+    image_templates:
+      - ghcr.io/netbirdio/relay:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/relay:{{ .Version }}-arm
+      - ghcr.io/netbirdio/relay:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/relay:latest
+    image_templates:
+      - ghcr.io/netbirdio/relay:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/relay:{{ .Version }}-arm
+      - ghcr.io/netbirdio/relay:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/signal:{{ .Version }}
+    image_templates:
+      - ghcr.io/netbirdio/signal:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/signal:{{ .Version }}-arm
+      - ghcr.io/netbirdio/signal:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/signal:latest
+    image_templates:
+      - ghcr.io/netbirdio/signal:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/signal:{{ .Version }}-arm
+      - ghcr.io/netbirdio/signal:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/management:{{ .Version }}
+    image_templates:
+      - ghcr.io/netbirdio/management:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/management:{{ .Version }}-arm
+      - ghcr.io/netbirdio/management:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/management:latest
+    image_templates:
+      - ghcr.io/netbirdio/management:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/management:{{ .Version }}-arm
+      - ghcr.io/netbirdio/management:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/management:debug-latest
+    image_templates:
+      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm64v8
+      - ghcr.io/netbirdio/management:{{ .Version }}-debug-arm
+      - ghcr.io/netbirdio/management:{{ .Version }}-debug-amd64
+
+  - name_template: ghcr.io/netbirdio/upload:{{ .Version }}
+    image_templates:
+      - ghcr.io/netbirdio/upload:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/upload:{{ .Version }}-arm
+      - ghcr.io/netbirdio/upload:{{ .Version }}-amd64
+
+  - name_template: ghcr.io/netbirdio/upload:latest
+    image_templates:
+      - ghcr.io/netbirdio/upload:{{ .Version }}-arm64v8
+      - ghcr.io/netbirdio/upload:{{ .Version }}-arm
+      - ghcr.io/netbirdio/upload:{{ .Version }}-amd64
 brews:
   - ids:
       - default

README.md

@@ -12,8 +12,11 @@
        <img src="https://img.shields.io/badge/license-BSD--3-blue" />
      </a> 
     <br>
-    <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-31rofwmxc-27akKd0Le0vyRpBcwXkP0g">
+    <a href="https://docs.netbird.io/slack-url">
         <img src="https://img.shields.io/badge/slack-@netbird-red.svg?logo=slack"/>
+     </a>
+    <a href="https://forum.netbird.io">
+        <img src="https://img.shields.io/badge/community forum-@netbird-red.svg?logo=discourse"/>
      </a>  
      <br>
     <a href="https://gurubase.io/g/netbird">
@@ -29,13 +32,13 @@
   <br/>
   See <a href="https://netbird.io/docs/">Documentation</a>
   <br/>
-   Join our <a href="https://join.slack.com/t/netbirdio/shared_invite/zt-31rofwmxc-27akKd0Le0vyRpBcwXkP0g">Slack channel</a>
+   Join our <a href="https://docs.netbird.io/slack-url">Slack channel</a> or our <a href="https://forum.netbird.io">Community forum</a>
   <br/>
  
 </strong>
 <br>
-<a href="https://github.com/netbirdio/kubernetes-operator">
-    New: NetBird Kubernetes Operator
+<a href="https://registry.terraform.io/providers/netbirdio/netbird/latest">
+    New: NetBird terraform provider
   </a> 
 </p>
 
@@ -47,10 +50,9 @@
 
 **Secure.** NetBird enables secure remote access by applying granular access policies while allowing you to manage them intuitively from a single place. Works universally on any infrastructure.
 
-### Open-Source Network Security in a Single Platform
+### Open Source Network Security in a Single Platform
 
-
-![netbird_2](https://github.com/netbirdio/netbird/assets/700848/46bc3b73-508d-4a0e-bb9a-f465d68646ab)
+<img width="1188" alt="centralized-network-management 1" src="https://github.com/user-attachments/assets/c28cc8e4-15d2-4d2f-bb97-a6433db39d56" />
 
 ### NetBird on Lawrence Systems (Video)
 [![Watch the video](https://img.youtube.com/vi/Kwrff6h0rEw/0.jpg)](https://www.youtube.com/watch?v=Kwrff6h0rEw)

client/Dockerfile

@@ -1,6 +1,9 @@
 FROM alpine:3.21.3
 # iproute2: busybox doesn't display ip rules properly
 RUN apk add --no-cache ca-certificates ip6tables iproute2 iptables
+
+ARG NETBIRD_BINARY=netbird
+COPY ${NETBIRD_BINARY} /usr/local/bin/netbird
+
 ENV NB_FOREGROUND_MODE=true
 ENTRYPOINT [ "/usr/local/bin/netbird","up"]
-COPY netbird /usr/local/bin/netbird

client/Dockerfile-rootless

@@ -1,6 +1,7 @@
 FROM alpine:3.21.0
 
-COPY netbird /usr/local/bin/netbird
+ARG NETBIRD_BINARY=netbird
+COPY ${NETBIRD_BINARY} /usr/local/bin/netbird
 
 RUN apk add --no-cache ca-certificates \
     && adduser -D -h /var/lib/netbird netbird

client/android/client.go

@@ -59,10 +59,14 @@ type Client struct {
 	deviceName            string
 	uiVersion             string
 	networkChangeListener listener.NetworkChangeListener
+
+	connectClient *internal.ConnectClient
 }
 
 // NewClient instantiate a new Client
-func NewClient(cfgFile, deviceName string, uiVersion string, tunAdapter TunAdapter, iFaceDiscover IFaceDiscover, networkChangeListener NetworkChangeListener) *Client {
+func NewClient(cfgFile string, androidSDKVersion int, deviceName string, uiVersion string, tunAdapter TunAdapter, iFaceDiscover IFaceDiscover, networkChangeListener NetworkChangeListener) *Client {
+	execWorkaround(androidSDKVersion)
+
 	net.SetAndroidProtectSocketFn(tunAdapter.ProtectSocket)
 	return &Client{
 		cfgFile:               cfgFile,
@@ -106,8 +110,8 @@ func (c *Client) Run(urlOpener URLOpener, dns *DNSList, dnsReadyListener DnsRead
 
 	// todo do not throw error in case of cancelled context
 	ctx = internal.CtxInitState(ctx)
-	connectClient := internal.NewConnectClient(ctx, cfg, c.recorder)
-	return connectClient.RunOnAndroid(c.tunAdapter, c.iFaceDiscover, c.networkChangeListener, dns.items, dnsReadyListener)
+	c.connectClient = internal.NewConnectClient(ctx, cfg, c.recorder)
+	return c.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).
@@ -132,8 +136,8 @@ func (c *Client) RunWithoutLogin(dns *DNSList, dnsReadyListener DnsReadyListener
 
 	// todo do not throw error in case of cancelled context
 	ctx = internal.CtxInitState(ctx)
-	connectClient := internal.NewConnectClient(ctx, cfg, c.recorder)
-	return connectClient.RunOnAndroid(c.tunAdapter, c.iFaceDiscover, c.networkChangeListener, dns.items, dnsReadyListener)
+	c.connectClient = internal.NewConnectClient(ctx, cfg, c.recorder)
+	return c.connectClient.RunOnAndroid(c.tunAdapter, c.iFaceDiscover, c.networkChangeListener, dns.items, dnsReadyListener)
 }
 
 // Stop the internal client and free the resources
@@ -174,6 +178,55 @@ func (c *Client) PeersList() *PeerInfoArray {
 	return &PeerInfoArray{items: peerInfos}
 }
 
+func (c *Client) Networks() *NetworkArray {
+	if c.connectClient == nil {
+		log.Error("not connected")
+		return nil
+	}
+
+	engine := c.connectClient.Engine()
+	if engine == nil {
+		log.Error("could not get engine")
+		return nil
+	}
+
+	routeManager := engine.GetRouteManager()
+	if routeManager == nil {
+		log.Error("could not get route manager")
+		return nil
+	}
+
+	networkArray := &NetworkArray{
+		items: make([]Network, 0),
+	}
+
+	for id, routes := range routeManager.GetClientRoutesWithNetID() {
+		if len(routes) == 0 {
+			continue
+		}
+
+		r := routes[0]
+		netStr := r.Network.String()
+		if r.IsDynamic() {
+			netStr = r.Domains.SafeString()
+		}
+
+		peer, err := c.recorder.GetPeer(routes[0].Peer)
+		if err != nil {
+			log.Errorf("could not get peer info for %s: %v", routes[0].Peer, err)
+			continue
+		}
+		network := Network{
+			Name:    string(id),
+			Network: netStr,
+			Peer:    peer.FQDN,
+			Status:  peer.ConnStatus.String(),
+		}
+		networkArray.Add(network)
+	}
+	return networkArray
+}
+
 // OnUpdatedHostDNS update the DNS servers addresses for root zones
 func (c *Client) OnUpdatedHostDNS(list *DNSList) error {
 	dnsServer, err := dns.GetServerDns()

client/android/exec.go

@@ -0,0 +1,26 @@
+//go:build android
+
+package android
+
+import (
+	"fmt"
+	_ "unsafe"
+)
+
+// https://github.com/golang/go/pull/69543/commits/aad6b3b32c81795f86bc4a9e81aad94899daf520
+// In Android version 11 and earlier, pidfd-related system calls
+// are not allowed by the seccomp policy, which causes crashes due
+// to SIGSYS signals.
+
+//go:linkname checkPidfdOnce os.checkPidfdOnce
+var checkPidfdOnce func() error
+
+func execWorkaround(androidSDKVersion int) {
+	if androidSDKVersion > 30 { // above Android 11
+		return
+	}
+
+	checkPidfdOnce = func() error {
+		return fmt.Errorf("unsupported Android version")
+	}
+}

client/android/networks.go

@@ -0,0 +1,27 @@
+//go:build android
+
+package android
+
+type Network struct {
+	Name    string
+	Network string
+	Peer    string
+	Status  string
+}
+
+type NetworkArray struct {
+	items []Network
+}
+
+func (array *NetworkArray) Add(s Network) *NetworkArray {
+	array.items = append(array.items, s)
+	return array
+}
+
+func (array *NetworkArray) Get(i int) *Network {
+	return &array.items[i]
+}
+
+func (array *NetworkArray) Size() int {
+	return len(array.items)
+}

client/android/peer_notifier.go

@@ -7,30 +7,23 @@ type PeerInfo struct {
 	ConnStatus string // Todo replace to enum
 }
 
-// PeerInfoCollection made for Java layer to get non default types as collection
-type PeerInfoCollection interface {
-	Add(s string) PeerInfoCollection
-	Get(i int) string
-	Size() int
-}
-
-// PeerInfoArray is the implementation of the PeerInfoCollection
+// PeerInfoArray is a wrapper of []PeerInfo
 type PeerInfoArray struct {
 	items []PeerInfo
 }
 
 // Add new PeerInfo to the collection
-func (array PeerInfoArray) Add(s PeerInfo) PeerInfoArray {
+func (array *PeerInfoArray) Add(s PeerInfo) *PeerInfoArray {
 	array.items = append(array.items, s)
 	return array
 }
 
 // Get return an element of the collection
-func (array PeerInfoArray) Get(i int) *PeerInfo {
+func (array *PeerInfoArray) Get(i int) *PeerInfo {
 	return &array.items[i]
 }
 
 // Size return with the size of the collection
-func (array PeerInfoArray) Size() int {
+func (array *PeerInfoArray) Size() int {
 	return len(array.items)
 }

client/android/preferences.go

@@ -4,12 +4,12 @@ import (
 	"github.com/netbirdio/netbird/client/internal"
 )
 
-// Preferences export a subset of the internal config for gomobile
+// Preferences exports a subset of the internal config for gomobile
 type Preferences struct {
 	configInput internal.ConfigInput
 }
 
-// NewPreferences create new Preferences instance
+// NewPreferences creates a new Preferences instance
 func NewPreferences(configPath string) *Preferences {
 	ci := internal.ConfigInput{
 		ConfigPath: configPath,
@@ -17,7 +17,7 @@ func NewPreferences(configPath string) *Preferences {
 	return &Preferences{ci}
 }
 
-// GetManagementURL read url from config file
+// GetManagementURL reads URL from config file
 func (p *Preferences) GetManagementURL() (string, error) {
 	if p.configInput.ManagementURL != "" {
 		return p.configInput.ManagementURL, nil
@@ -30,12 +30,12 @@ func (p *Preferences) GetManagementURL() (string, error) {
 	return cfg.ManagementURL.String(), err
 }
 
-// SetManagementURL store the given url and wait for commit
+// SetManagementURL stores the given URL and waits for commit
 func (p *Preferences) SetManagementURL(url string) {
 	p.configInput.ManagementURL = url
 }
 
-// GetAdminURL read url from config file
+// GetAdminURL reads URL from config file
 func (p *Preferences) GetAdminURL() (string, error) {
 	if p.configInput.AdminURL != "" {
 		return p.configInput.AdminURL, nil
@@ -48,12 +48,12 @@ func (p *Preferences) GetAdminURL() (string, error) {
 	return cfg.AdminURL.String(), err
 }
 
-// SetAdminURL store the given url and wait for commit
+// SetAdminURL stores the given URL and waits for commit
 func (p *Preferences) SetAdminURL(url string) {
 	p.configInput.AdminURL = url
 }
 
-// GetPreSharedKey read preshared key from config file
+// GetPreSharedKey reads pre-shared key from config file
 func (p *Preferences) GetPreSharedKey() (string, error) {
 	if p.configInput.PreSharedKey != nil {
 		return *p.configInput.PreSharedKey, nil
@@ -66,12 +66,160 @@ func (p *Preferences) GetPreSharedKey() (string, error) {
 	return cfg.PreSharedKey, err
 }
 
-// SetPreSharedKey store the given key and wait for commit
+// SetPreSharedKey stores the given key and waits for commit
 func (p *Preferences) SetPreSharedKey(key string) {
 	p.configInput.PreSharedKey = &key
 }
 
-// Commit write out the changes into config file
+// SetRosenpassEnabled stores whether Rosenpass is enabled
+func (p *Preferences) SetRosenpassEnabled(enabled bool) {
+	p.configInput.RosenpassEnabled = &enabled
+}
+
+// GetRosenpassEnabled reads Rosenpass enabled status from config file
+func (p *Preferences) GetRosenpassEnabled() (bool, error) {
+	if p.configInput.RosenpassEnabled != nil {
+		return *p.configInput.RosenpassEnabled, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	return cfg.RosenpassEnabled, err
+}
+
+// SetRosenpassPermissive stores the given permissive setting and waits for commit
+func (p *Preferences) SetRosenpassPermissive(permissive bool) {
+	p.configInput.RosenpassPermissive = &permissive
+}
+
+// GetRosenpassPermissive reads Rosenpass permissive setting from config file
+func (p *Preferences) GetRosenpassPermissive() (bool, error) {
+	if p.configInput.RosenpassPermissive != nil {
+		return *p.configInput.RosenpassPermissive, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	return cfg.RosenpassPermissive, err
+}
+
+// GetDisableClientRoutes reads disable client routes setting from config file
+func (p *Preferences) GetDisableClientRoutes() (bool, error) {
+	if p.configInput.DisableClientRoutes != nil {
+		return *p.configInput.DisableClientRoutes, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	return cfg.DisableClientRoutes, err
+}
+
+// SetDisableClientRoutes stores the given value and waits for commit
+func (p *Preferences) SetDisableClientRoutes(disable bool) {
+	p.configInput.DisableClientRoutes = &disable
+}
+
+// GetDisableServerRoutes reads disable server routes setting from config file
+func (p *Preferences) GetDisableServerRoutes() (bool, error) {
+	if p.configInput.DisableServerRoutes != nil {
+		return *p.configInput.DisableServerRoutes, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	return cfg.DisableServerRoutes, err
+}
+
+// SetDisableServerRoutes stores the given value and waits for commit
+func (p *Preferences) SetDisableServerRoutes(disable bool) {
+	p.configInput.DisableServerRoutes = &disable
+}
+
+// GetDisableDNS reads disable DNS setting from config file
+func (p *Preferences) GetDisableDNS() (bool, error) {
+	if p.configInput.DisableDNS != nil {
+		return *p.configInput.DisableDNS, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	return cfg.DisableDNS, err
+}
+
+// SetDisableDNS stores the given value and waits for commit
+func (p *Preferences) SetDisableDNS(disable bool) {
+	p.configInput.DisableDNS = &disable
+}
+
+// GetDisableFirewall reads disable firewall setting from config file
+func (p *Preferences) GetDisableFirewall() (bool, error) {
+	if p.configInput.DisableFirewall != nil {
+		return *p.configInput.DisableFirewall, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	return cfg.DisableFirewall, err
+}
+
+// SetDisableFirewall stores the given value and waits for commit
+func (p *Preferences) SetDisableFirewall(disable bool) {
+	p.configInput.DisableFirewall = &disable
+}
+
+// GetServerSSHAllowed reads server SSH allowed setting from config file
+func (p *Preferences) GetServerSSHAllowed() (bool, error) {
+	if p.configInput.ServerSSHAllowed != nil {
+		return *p.configInput.ServerSSHAllowed, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	if cfg.ServerSSHAllowed == nil {
+		// Default to false for security on Android
+		return false, nil
+	}
+	return *cfg.ServerSSHAllowed, err
+}
+
+// SetServerSSHAllowed stores the given value and waits for commit
+func (p *Preferences) SetServerSSHAllowed(allowed bool) {
+	p.configInput.ServerSSHAllowed = &allowed
+}
+
+// GetBlockInbound reads block inbound setting from config file
+func (p *Preferences) GetBlockInbound() (bool, error) {
+	if p.configInput.BlockInbound != nil {
+		return *p.configInput.BlockInbound, nil
+	}
+
+	cfg, err := internal.ReadConfig(p.configInput.ConfigPath)
+	if err != nil {
+		return false, err
+	}
+	return cfg.BlockInbound, err
+}
+
+// SetBlockInbound stores the given value and waits for commit
+func (p *Preferences) SetBlockInbound(block bool) {
+	p.configInput.BlockInbound = &block
+}
+
+// Commit writes out the changes to the config file
 func (p *Preferences) Commit() error {
 	_, err := internal.UpdateOrCreateConfig(p.configInput)
 	return err

client/anonymize/anonymize.go

@@ -69,6 +69,22 @@ func (a *Anonymizer) AnonymizeIP(ip netip.Addr) netip.Addr {
 	return a.ipAnonymizer[ip]
 }
 
+func (a *Anonymizer) AnonymizeUDPAddr(addr net.UDPAddr) net.UDPAddr {
+	// Convert IP to netip.Addr
+	ip, ok := netip.AddrFromSlice(addr.IP)
+	if !ok {
+		return addr
+	}
+
+	anonIP := a.AnonymizeIP(ip)
+
+	return net.UDPAddr{
+		IP:   anonIP.AsSlice(),
+		Port: addr.Port,
+		Zone: addr.Zone,
+	}
+}
+
 // 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 {

client/cmd/debug.go

@@ -17,10 +17,18 @@ import (
 	"github.com/netbirdio/netbird/client/server"
 	nbstatus "github.com/netbirdio/netbird/client/status"
 	mgmProto "github.com/netbirdio/netbird/management/proto"
+	"github.com/netbirdio/netbird/upload-server/types"
 )
 
 const errCloseConnection = "Failed to close connection: %v"
 
+var (
+	logFileCount        uint32
+	systemInfoFlag      bool
+	uploadBundleFlag    bool
+	uploadBundleURLFlag string
+)
+
 var debugCmd = &cobra.Command{
 	Use:   "debug",
 	Short: "Debugging commands",
@@ -88,12 +96,13 @@ func debugBundle(cmd *cobra.Command, _ []string) error {
 
 	client := proto.NewDaemonServiceClient(conn)
 	request := &proto.DebugBundleRequest{
-		Anonymize:  anonymizeFlag,
-		Status:     getStatusOutput(cmd, anonymizeFlag),
-		SystemInfo: debugSystemInfoFlag,
+		Anonymize:    anonymizeFlag,
+		Status:       getStatusOutput(cmd, anonymizeFlag),
+		SystemInfo:   systemInfoFlag,
+		LogFileCount: logFileCount,
 	}
-	if debugUploadBundle {
-		request.UploadURL = debugUploadBundleURL
+	if uploadBundleFlag {
+		request.UploadURL = uploadBundleURLFlag
 	}
 	resp, err := client.DebugBundle(cmd.Context(), request)
 	if err != nil {
@@ -105,7 +114,7 @@ func debugBundle(cmd *cobra.Command, _ []string) error {
 		return fmt.Errorf("upload failed: %s", resp.GetUploadFailureReason())
 	}
 
-	if debugUploadBundle {
+	if uploadBundleFlag {
 		cmd.Printf("Upload file key:\n%s\n", resp.GetUploadedKey())
 	}
 
@@ -223,25 +232,19 @@ func runForDuration(cmd *cobra.Command, args []string) error {
 	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, anonymizeFlag))
 	request := &proto.DebugBundleRequest{
-		Anonymize:  anonymizeFlag,
-		Status:     statusOutput,
-		SystemInfo: debugSystemInfoFlag,
+		Anonymize:    anonymizeFlag,
+		Status:       statusOutput,
+		SystemInfo:   systemInfoFlag,
+		LogFileCount: logFileCount,
 	}
-	if debugUploadBundle {
-		request.UploadURL = debugUploadBundleURL
+	if uploadBundleFlag {
+		request.UploadURL = uploadBundleURLFlag
 	}
 	resp, err := client.DebugBundle(cmd.Context(), request)
 	if err != nil {
 		return fmt.Errorf("failed to bundle debug: %v", status.Convert(err).Message())
 	}
 
-	// Disable network map persistence after creating the debug bundle
-	if _, err := client.SetNetworkMapPersistence(cmd.Context(), &proto.SetNetworkMapPersistenceRequest{
-		Enabled: false,
-	}); err != nil {
-		return fmt.Errorf("failed to disable network map persistence: %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())
@@ -262,7 +265,7 @@ func runForDuration(cmd *cobra.Command, args []string) error {
 		return fmt.Errorf("upload failed: %s", resp.GetUploadFailureReason())
 	}
 
-	if debugUploadBundle {
+	if uploadBundleFlag {
 		cmd.Printf("Upload file key:\n%s\n", resp.GetUploadedKey())
 	}
 
@@ -304,7 +307,7 @@ func getStatusOutput(cmd *cobra.Command, anon bool) string {
 		cmd.PrintErrf("Failed to get status: %v\n", err)
 	} else {
 		statusOutputString = nbstatus.ParseToFullDetailSummary(
-			nbstatus.ConvertToStatusOutputOverview(statusResp, anon, "", nil, nil, nil),
+			nbstatus.ConvertToStatusOutputOverview(statusResp, anon, "", nil, nil, nil, ""),
 		)
 	}
 	return statusOutputString
@@ -382,3 +385,15 @@ func generateDebugBundle(config *internal.Config, recorder *peer.Status, connect
 	}
 	log.Infof("Generated debug bundle from SIGUSR1 at: %s", path)
 }
+
+func init() {
+	debugBundleCmd.Flags().Uint32VarP(&logFileCount, "log-file-count", "C", 1, "Number of rotated log files to include in debug bundle")
+	debugBundleCmd.Flags().BoolVarP(&systemInfoFlag, "system-info", "S", true, "Adds system information to the debug bundle")
+	debugBundleCmd.Flags().BoolVarP(&uploadBundleFlag, "upload-bundle", "U", false, "Uploads the debug bundle to a server")
+	debugBundleCmd.Flags().StringVar(&uploadBundleURLFlag, "upload-bundle-url", types.DefaultBundleURL, "Service URL to get an URL to upload the debug bundle")
+
+	forCmd.Flags().Uint32VarP(&logFileCount, "log-file-count", "C", 1, "Number of rotated log files to include in debug bundle")
+	forCmd.Flags().BoolVarP(&systemInfoFlag, "system-info", "S", true, "Adds system information to the debug bundle")
+	forCmd.Flags().BoolVarP(&uploadBundleFlag, "upload-bundle", "U", false, "Uploads the debug bundle to a server")
+	forCmd.Flags().StringVar(&uploadBundleURLFlag, "upload-bundle-url", types.DefaultBundleURL, "Service URL to get an URL to upload the debug bundle")
+}

client/cmd/login.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"os"
+	"runtime"
 	"strings"
 	"time"
 
@@ -98,11 +99,11 @@ var loginCmd = &cobra.Command{
 		}
 
 		loginRequest := proto.LoginRequest{
-			SetupKey:             providedSetupKey,
-			ManagementUrl:        managementURL,
-			IsLinuxDesktopClient: isLinuxRunningDesktop(),
-			Hostname:             hostName,
-			DnsLabels:            dnsLabelsReq,
+			SetupKey:            providedSetupKey,
+			ManagementUrl:       managementURL,
+			IsUnixDesktopClient: isUnixRunningDesktop(),
+			Hostname:            hostName,
+			DnsLabels:           dnsLabelsReq,
 		}
 
 		if rootCmd.PersistentFlags().Changed(preSharedKeyFlag) {
@@ -195,7 +196,7 @@ func foregroundLogin(ctx context.Context, cmd *cobra.Command, config *internal.C
 }
 
 func foregroundGetTokenInfo(ctx context.Context, cmd *cobra.Command, config *internal.Config) (*auth.TokenInfo, error) {
-	oAuthFlow, err := auth.NewOAuthFlow(ctx, config, isLinuxRunningDesktop())
+	oAuthFlow, err := auth.NewOAuthFlow(ctx, config, isUnixRunningDesktop())
 	if err != nil {
 		return nil, err
 	}
@@ -243,7 +244,10 @@ func openURL(cmd *cobra.Command, verificationURIComplete, userCode string, noBro
 	}
 }
 
-// isLinuxRunningDesktop checks if a Linux OS is running desktop environment
-func isLinuxRunningDesktop() bool {
+// isUnixRunningDesktop checks if a Linux OS is running desktop environment
+func isUnixRunningDesktop() bool {
+	if runtime.GOOS != "linux" && runtime.GOOS != "freebsd" {
+		return false
+	}
 	return os.Getenv("DESKTOP_SESSION") != "" || os.Getenv("XDG_CURRENT_DESKTOP") != ""
 }

client/cmd/root.go

@@ -22,27 +22,22 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/netbirdio/netbird/client/internal"
-	"github.com/netbirdio/netbird/upload-server/types"
 )
 
 const (
-	externalIPMapFlag       = "external-ip-map"
-	dnsResolverAddress      = "dns-resolver-address"
-	enableRosenpassFlag     = "enable-rosenpass"
-	rosenpassPermissiveFlag = "rosenpass-permissive"
-	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"
-	blockLANAccessFlag      = "block-lan-access"
-	uploadBundle            = "upload-bundle"
-	uploadBundleURL         = "upload-bundle-url"
-	defaultBundleURL        = "https://upload.debug.netbird.io" + types.GetURLPath
+	externalIPMapFlag        = "external-ip-map"
+	dnsResolverAddress       = "dns-resolver-address"
+	enableRosenpassFlag      = "enable-rosenpass"
+	rosenpassPermissiveFlag  = "rosenpass-permissive"
+	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"
+	enableLazyConnectionFlag = "enable-lazy-connection"
 )
 
 var (
@@ -76,11 +71,8 @@ var (
 	autoConnectDisabled     bool
 	extraIFaceBlackList     []string
 	anonymizeFlag           bool
-	debugSystemInfoFlag     bool
 	dnsRouteInterval        time.Duration
-	blockLANAccess          bool
-	debugUploadBundle       bool
-	debugUploadBundleURL    string
+	lazyConnEnabled         bool
 
 	rootCmd = &cobra.Command{
 		Use:          "netbird",
@@ -185,10 +177,8 @@ 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.")
+	upCmd.PersistentFlags().BoolVar(&lazyConnEnabled, enableLazyConnectionFlag, false, "[Experimental] Enable the lazy connection feature. If enabled, the client will establish connections on-demand. Note: this setting may be overridden by management configuration.")
 
-	debugCmd.PersistentFlags().BoolVarP(&debugSystemInfoFlag, systemInfoFlag, "S", true, "Adds system information to the debug bundle")
-	debugCmd.PersistentFlags().BoolVarP(&debugUploadBundle, uploadBundle, "U", false, fmt.Sprintf("Uploads the debug bundle to a server from URL defined by %s", uploadBundleURL))
-	debugCmd.PersistentFlags().StringVar(&debugUploadBundleURL, uploadBundleURL, defaultBundleURL, "Service URL to get an URL to upload the debug bundle")
 }
 
 // SetupCloseHandler handles SIGTERM signal and exits with success

client/cmd/service.go

@@ -2,6 +2,7 @@ package cmd
 
 import (
 	"context"
+	"runtime"
 	"sync"
 
 	"github.com/kardianos/service"
@@ -27,12 +28,19 @@ func newProgram(ctx context.Context, cancel context.CancelFunc) *program {
 }
 
 func newSVCConfig() *service.Config {
-	return &service.Config{
+	config := &service.Config{
 		Name:        serviceName,
 		DisplayName: "Netbird",
-		Description: "A WireGuard-based mesh network that connects your devices into a single private network.",
+		Description: "Netbird mesh network client",
 		Option:      make(service.KeyValue),
+		EnvVars:     make(map[string]string),
 	}
+
+	if runtime.GOOS == "linux" {
+		config.EnvVars["SYSTEMD_UNIT"] = serviceName
+	}
+
+	return config
 }
 
 func newSVC(prg *program, conf *service.Config) (service.Service, error) {

client/cmd/service_installer.go

@@ -39,7 +39,7 @@ var installCmd = &cobra.Command{
 			svcConfig.Arguments = append(svcConfig.Arguments, "--management-url", managementURL)
 		}
 
-		if logFile != "console" {
+		if logFile != "" {
 			svcConfig.Arguments = append(svcConfig.Arguments, "--log-file", logFile)
 		}
 

client/cmd/status.go

@@ -26,6 +26,7 @@ var (
 	statusFilter         string
 	ipsFilterMap         map[string]struct{}
 	prefixNamesFilterMap map[string]struct{}
+	connectionTypeFilter string
 )
 
 var statusCmd = &cobra.Command{
@@ -44,7 +45,8 @@ func init() {
 	statusCmd.MarkFlagsMutuallyExclusive("detail", "json", "yaml", "ipv4")
 	statusCmd.PersistentFlags().StringSliceVar(&ipsFilter, "filter-by-ips", []string{}, "filters the detailed output by a list of one or more IPs, e.g., --filter-by-ips 100.64.0.100,100.64.0.200")
 	statusCmd.PersistentFlags().StringSliceVar(&prefixNamesFilter, "filter-by-names", []string{}, "filters the detailed output by a list of one or more peer FQDN or hostnames, e.g., --filter-by-names peer-a,peer-b.netbird.cloud")
-	statusCmd.PersistentFlags().StringVar(&statusFilter, "filter-by-status", "", "filters the detailed output by connection status(connected|disconnected), e.g., --filter-by-status connected")
+	statusCmd.PersistentFlags().StringVar(&statusFilter, "filter-by-status", "", "filters the detailed output by connection status(idle|connecting|connected), e.g., --filter-by-status connected")
+	statusCmd.PersistentFlags().StringVar(&connectionTypeFilter, "filter-by-connection-type", "", "filters the detailed output by connection type (P2P|Relayed), e.g., --filter-by-connection-type P2P")
 }
 
 func statusFunc(cmd *cobra.Command, args []string) error {
@@ -69,7 +71,10 @@ func statusFunc(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	if resp.GetStatus() == string(internal.StatusNeedsLogin) || resp.GetStatus() == string(internal.StatusLoginFailed) {
+	status := resp.GetStatus()
+
+	if status == string(internal.StatusNeedsLogin) || status == string(internal.StatusLoginFailed) ||
+		status == string(internal.StatusSessionExpired) {
 		cmd.Printf("Daemon status: %s\n\n"+
 			"Run UP command to log in with SSO (interactive login):\n\n"+
 			" netbird up \n\n"+
@@ -86,7 +91,7 @@ func statusFunc(cmd *cobra.Command, args []string) error {
 		return nil
 	}
 
-	var outputInformationHolder = nbstatus.ConvertToStatusOutputOverview(resp, anonymizeFlag, statusFilter, prefixNamesFilter, prefixNamesFilterMap, ipsFilterMap)
+	var outputInformationHolder = nbstatus.ConvertToStatusOutputOverview(resp, anonymizeFlag, statusFilter, prefixNamesFilter, prefixNamesFilterMap, ipsFilterMap, connectionTypeFilter)
 	var statusOutputString string
 	switch {
 	case detailFlag:
@@ -117,7 +122,7 @@ func getStatus(ctx context.Context) (*proto.StatusResponse, error) {
 	}
 	defer conn.Close()
 
-	resp, err := proto.NewDaemonServiceClient(conn).Status(ctx, &proto.StatusRequest{GetFullPeerStatus: true})
+	resp, err := proto.NewDaemonServiceClient(conn).Status(ctx, &proto.StatusRequest{GetFullPeerStatus: true, ShouldRunProbes: true})
 	if err != nil {
 		return nil, fmt.Errorf("status failed: %v", status.Convert(err).Message())
 	}
@@ -127,12 +132,12 @@ func getStatus(ctx context.Context) (*proto.StatusResponse, error) {
 
 func parseFilters() error {
 	switch strings.ToLower(statusFilter) {
-	case "", "disconnected", "connected":
+	case "", "idle", "connecting", "connected":
 		if strings.ToLower(statusFilter) != "" {
 			enableDetailFlagWhenFilterFlag()
 		}
 	default:
-		return fmt.Errorf("wrong status filter, should be one of connected|disconnected, got: %s", statusFilter)
+		return fmt.Errorf("wrong status filter, should be one of connected|connecting|idle, got: %s", statusFilter)
 	}
 
 	if len(ipsFilter) > 0 {
@@ -153,6 +158,15 @@ func parseFilters() error {
 		enableDetailFlagWhenFilterFlag()
 	}
 
+	switch strings.ToLower(connectionTypeFilter) {
+	case "", "p2p", "relayed":
+		if strings.ToLower(connectionTypeFilter) != "" {
+			enableDetailFlagWhenFilterFlag()
+		}
+	default:
+		return fmt.Errorf("wrong connection-type filter, should be one of P2P|Relayed, got: %s", connectionTypeFilter)
+	}
+
 	return nil
 }
 

client/cmd/system.go

@@ -6,6 +6,8 @@ const (
 	disableServerRoutesFlag = "disable-server-routes"
 	disableDNSFlag          = "disable-dns"
 	disableFirewallFlag     = "disable-firewall"
+	blockLANAccessFlag      = "block-lan-access"
+	blockInboundFlag        = "block-inbound"
 )
 
 var (
@@ -13,6 +15,8 @@ var (
 	disableServerRoutes bool
 	disableDNS          bool
 	disableFirewall     bool
+	blockLANAccess      bool
+	blockInbound        bool
 )
 
 func init() {
@@ -28,4 +32,11 @@ func init() {
 
 	upCmd.PersistentFlags().BoolVar(&disableFirewall, disableFirewallFlag, false,
 		"Disable firewall configuration. If enabled, the client won't modify firewall rules.")
+
+	upCmd.PersistentFlags().BoolVar(&blockLANAccess, blockLANAccessFlag, false,
+		"Block access to local networks (LAN) when using this peer as a router or exit node")
+
+	upCmd.PersistentFlags().BoolVar(&blockInbound, blockInboundFlag, false,
+		"Block inbound connections. If enabled, the client will not allow any inbound connections to the local machine nor routed networks.\n"+
+			"This overrides any policies received from the management service.")
 }

client/cmd/testutil_test.go

@@ -103,13 +103,13 @@ func startManagement(t *testing.T, config *types.Config, testFile string) (*grpc
 		Return(&types.Settings{}, nil).
 		AnyTimes()
 
-	accountManager, err := mgmt.BuildManager(context.Background(), store, peersUpdateManager, nil, "", "netbird.selfhosted", eventStore, nil, false, iv, metrics, port_forwarding.NewControllerMock(), settingsMockManager, permissionsManagerMock)
+	accountManager, err := mgmt.BuildManager(context.Background(), store, peersUpdateManager, nil, "", "netbird.selfhosted", eventStore, nil, false, iv, metrics, port_forwarding.NewControllerMock(), settingsMockManager, permissionsManagerMock, false)
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	secretsManager := mgmt.NewTimeBasedAuthSecretsManager(peersUpdateManager, config.TURNConfig, config.Relay, settingsMockManager)
-	mgmtServer, err := mgmt.NewServer(context.Background(), config, accountManager, settingsMockManager, peersUpdateManager, secretsManager, nil, nil, nil)
+	mgmtServer, err := mgmt.NewServer(context.Background(), config, accountManager, settingsMockManager, peersUpdateManager, secretsManager, nil, nil, nil, &mgmt.MockIntegratedValidator{})
 	if err != nil {
 		t.Fatal(err)
 	}

client/cmd/trace.go

@@ -17,7 +17,7 @@ var traceCmd = &cobra.Command{
 	Example: `
   netbird debug trace in 192.168.1.10 10.10.0.2 -p tcp --sport 12345 --dport 443 --syn --ack
   netbird debug trace out 10.10.0.1 8.8.8.8 -p udp  --dport 53
-  netbird debug trace in 10.10.0.2 10.10.0.1 -p icmp --type 8 --code 0
+  netbird debug trace in 10.10.0.2 10.10.0.1 -p icmp --icmp-type 8 --icmp-code 0
   netbird debug trace in 100.64.1.1 self -p tcp --dport 80`,
 	Args: cobra.ExactArgs(3),
 	RunE: tracePacket,
@@ -118,7 +118,7 @@ func tracePacket(cmd *cobra.Command, args []string) error {
 }
 
 func printTrace(cmd *cobra.Command, src, dst, proto string, sport, dport uint16, resp *proto.TracePacketResponse) {
-	cmd.Printf("Packet trace %s:%d -> %s:%d (%s)\n\n", src, sport, dst, dport, strings.ToUpper(proto))
+	cmd.Printf("Packet trace %s:%d → %s:%d (%s)\n\n", src, sport, dst, dport, strings.ToUpper(proto))
 
 	for _, stage := range resp.Stages {
 		if stage.ForwardingDetails != nil {

client/cmd/up.go

@@ -55,12 +55,11 @@ func init() {
 	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. `+
+		`Manage network monitoring. Defaults to true on Windows and macOS, false on Linux and FreeBSD. `+
 			`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")
-	upCmd.PersistentFlags().BoolVar(&blockLANAccess, blockLANAccessFlag, false, "Block access to local networks (LAN) when using this peer as a router or exit node")
 
 	upCmd.PersistentFlags().StringSliceVar(&dnsLabels, dnsLabelsFlag, nil,
 		`Sets DNS labels`+
@@ -119,79 +118,9 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 		return err
 	}
 
-	ic := internal.ConfigInput{
-		ManagementURL:       managementURL,
-		AdminURL:            adminURL,
-		ConfigPath:          configPath,
-		NATExternalIPs:      natExternalIPs,
-		CustomDNSAddress:    customDNSAddressConverted,
-		ExtraIFaceBlackList: extraIFaceBlackList,
-		DNSLabels:           dnsLabelsValidated,
-	}
-
-	if cmd.Flag(enableRosenpassFlag).Changed {
-		ic.RosenpassEnabled = &rosenpassEnabled
-	}
-
-	if cmd.Flag(rosenpassPermissiveFlag).Changed {
-		ic.RosenpassPermissive = &rosenpassPermissive
-	}
-
-	if cmd.Flag(serverSSHAllowedFlag).Changed {
-		ic.ServerSSHAllowed = &serverSSHAllowed
-	}
-
-	if cmd.Flag(interfaceNameFlag).Changed {
-		if err := parseInterfaceName(interfaceName); err != nil {
-			return err
-		}
-		ic.InterfaceName = &interfaceName
-	}
-
-	if cmd.Flag(wireguardPortFlag).Changed {
-		p := int(wireguardPort)
-		ic.WireguardPort = &p
-	}
-
-	if cmd.Flag(networkMonitorFlag).Changed {
-		ic.NetworkMonitor = &networkMonitor
-	}
-
-	if rootCmd.PersistentFlags().Changed(preSharedKeyFlag) {
-		ic.PreSharedKey = &preSharedKey
-	}
-
-	if cmd.Flag(disableAutoConnectFlag).Changed {
-		ic.DisableAutoConnect = &autoConnectDisabled
-
-		if autoConnectDisabled {
-			cmd.Println("Autoconnect has been disabled. The client won't connect automatically when the service starts.")
-		}
-
-		if !autoConnectDisabled {
-			cmd.Println("Autoconnect has been enabled. The client will connect automatically when the service starts.")
-		}
-	}
-
-	if cmd.Flag(dnsRouteIntervalFlag).Changed {
-		ic.DNSRouteInterval = &dnsRouteInterval
-	}
-
-	if cmd.Flag(disableClientRoutesFlag).Changed {
-		ic.DisableClientRoutes = &disableClientRoutes
-	}
-	if cmd.Flag(disableServerRoutesFlag).Changed {
-		ic.DisableServerRoutes = &disableServerRoutes
-	}
-	if cmd.Flag(disableDNSFlag).Changed {
-		ic.DisableDNS = &disableDNS
-	}
-	if cmd.Flag(disableFirewallFlag).Changed {
-		ic.DisableFirewall = &disableFirewall
-	}
-
-	if cmd.Flag(blockLANAccessFlag).Changed {
-		ic.BlockLANAccess = &blockLANAccess
+	ic, err := setupConfig(customDNSAddressConverted, cmd)
+	if err != nil {
+		return fmt.Errorf("setup config: %v", err)
 	}
 
 	providedSetupKey, err := getSetupKey()
@@ -199,7 +128,7 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command) error {
 		return err
 	}
 
-	config, err := internal.UpdateOrCreateConfig(ic)
+	config, err := internal.UpdateOrCreateConfig(*ic)
 	if err != nil {
 		return fmt.Errorf("get config file: %v", err)
 	}
@@ -258,21 +187,153 @@ func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
 
 	providedSetupKey, err := getSetupKey()
 	if err != nil {
-		return err
+		return fmt.Errorf("get setup key: %v", err)
 	}
 
+	loginRequest, err := setupLoginRequest(providedSetupKey, customDNSAddressConverted, cmd)
+	if err != nil {
+		return fmt.Errorf("setup login request: %v", err)
+	}
+
+	var loginErr error
+	var loginResp *proto.LoginResponse
+
+	err = WithBackOff(func() error {
+		var backOffErr error
+		loginResp, backOffErr = client.Login(ctx, loginRequest)
+		if s, ok := gstatus.FromError(backOffErr); ok && (s.Code() == codes.InvalidArgument ||
+			s.Code() == codes.PermissionDenied ||
+			s.Code() == codes.NotFound ||
+			s.Code() == codes.Unimplemented) {
+			loginErr = backOffErr
+			return nil
+		}
+		return backOffErr
+	})
+	if err != nil {
+		return fmt.Errorf("login backoff cycle failed: %v", err)
+	}
+
+	if loginErr != nil {
+		return fmt.Errorf("login failed: %v", loginErr)
+	}
+
+	if loginResp.NeedsSSOLogin {
+
+		openURL(cmd, loginResp.VerificationURIComplete, loginResp.UserCode, noBrowser)
+
+		_, err = client.WaitSSOLogin(ctx, &proto.WaitSSOLoginRequest{UserCode: loginResp.UserCode, Hostname: hostName})
+		if err != nil {
+			return fmt.Errorf("waiting sso login failed with: %v", err)
+		}
+	}
+
+	if _, err := client.Up(ctx, &proto.UpRequest{}); err != nil {
+		return fmt.Errorf("call service up method: %v", err)
+	}
+	cmd.Println("Connected")
+	return nil
+}
+
+func setupConfig(customDNSAddressConverted []byte, cmd *cobra.Command) (*internal.ConfigInput, error) {
+	ic := internal.ConfigInput{
+		ManagementURL:       managementURL,
+		AdminURL:            adminURL,
+		ConfigPath:          configPath,
+		NATExternalIPs:      natExternalIPs,
+		CustomDNSAddress:    customDNSAddressConverted,
+		ExtraIFaceBlackList: extraIFaceBlackList,
+		DNSLabels:           dnsLabelsValidated,
+	}
+
+	if cmd.Flag(enableRosenpassFlag).Changed {
+		ic.RosenpassEnabled = &rosenpassEnabled
+	}
+
+	if cmd.Flag(rosenpassPermissiveFlag).Changed {
+		ic.RosenpassPermissive = &rosenpassPermissive
+	}
+
+	if cmd.Flag(serverSSHAllowedFlag).Changed {
+		ic.ServerSSHAllowed = &serverSSHAllowed
+	}
+
+	if cmd.Flag(interfaceNameFlag).Changed {
+		if err := parseInterfaceName(interfaceName); err != nil {
+			return nil, err
+		}
+		ic.InterfaceName = &interfaceName
+	}
+
+	if cmd.Flag(wireguardPortFlag).Changed {
+		p := int(wireguardPort)
+		ic.WireguardPort = &p
+	}
+
+	if cmd.Flag(networkMonitorFlag).Changed {
+		ic.NetworkMonitor = &networkMonitor
+	}
+
+	if rootCmd.PersistentFlags().Changed(preSharedKeyFlag) {
+		ic.PreSharedKey = &preSharedKey
+	}
+
+	if cmd.Flag(disableAutoConnectFlag).Changed {
+		ic.DisableAutoConnect = &autoConnectDisabled
+
+		if autoConnectDisabled {
+			cmd.Println("Autoconnect has been disabled. The client won't connect automatically when the service starts.")
+		}
+
+		if !autoConnectDisabled {
+			cmd.Println("Autoconnect has been enabled. The client will connect automatically when the service starts.")
+		}
+	}
+
+	if cmd.Flag(dnsRouteIntervalFlag).Changed {
+		ic.DNSRouteInterval = &dnsRouteInterval
+	}
+
+	if cmd.Flag(disableClientRoutesFlag).Changed {
+		ic.DisableClientRoutes = &disableClientRoutes
+	}
+	if cmd.Flag(disableServerRoutesFlag).Changed {
+		ic.DisableServerRoutes = &disableServerRoutes
+	}
+	if cmd.Flag(disableDNSFlag).Changed {
+		ic.DisableDNS = &disableDNS
+	}
+	if cmd.Flag(disableFirewallFlag).Changed {
+		ic.DisableFirewall = &disableFirewall
+	}
+
+	if cmd.Flag(blockLANAccessFlag).Changed {
+		ic.BlockLANAccess = &blockLANAccess
+	}
+
+	if cmd.Flag(blockInboundFlag).Changed {
+		ic.BlockInbound = &blockInbound
+	}
+
+	if cmd.Flag(enableLazyConnectionFlag).Changed {
+		ic.LazyConnectionEnabled = &lazyConnEnabled
+	}
+	return &ic, nil
+}
+
+func setupLoginRequest(providedSetupKey string, customDNSAddressConverted []byte, cmd *cobra.Command) (*proto.LoginRequest, error) {
 	loginRequest := proto.LoginRequest{
-		SetupKey:             providedSetupKey,
-		ManagementUrl:        managementURL,
-		AdminURL:             adminURL,
-		NatExternalIPs:       natExternalIPs,
-		CleanNATExternalIPs:  natExternalIPs != nil && len(natExternalIPs) == 0,
-		CustomDNSAddress:     customDNSAddressConverted,
-		IsLinuxDesktopClient: isLinuxRunningDesktop(),
-		Hostname:             hostName,
-		ExtraIFaceBlacklist:  extraIFaceBlackList,
-		DnsLabels:            dnsLabels,
-		CleanDNSLabels:       dnsLabels != nil && len(dnsLabels) == 0,
+		SetupKey:            providedSetupKey,
+		ManagementUrl:       managementURL,
+		AdminURL:            adminURL,
+		NatExternalIPs:      natExternalIPs,
+		CleanNATExternalIPs: natExternalIPs != nil && len(natExternalIPs) == 0,
+		CustomDNSAddress:    customDNSAddressConverted,
+		IsUnixDesktopClient: isUnixRunningDesktop(),
+		Hostname:            hostName,
+		ExtraIFaceBlacklist: extraIFaceBlackList,
+		DnsLabels:           dnsLabels,
+		CleanDNSLabels:      dnsLabels != nil && len(dnsLabels) == 0,
 	}
 
 	if rootCmd.PersistentFlags().Changed(preSharedKeyFlag) {
@@ -297,7 +358,7 @@ func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
 
 	if cmd.Flag(interfaceNameFlag).Changed {
 		if err := parseInterfaceName(interfaceName); err != nil {
-			return err
+			return nil, err
 		}
 		loginRequest.InterfaceName = &interfaceName
 	}
@@ -332,45 +393,14 @@ func runInDaemonMode(ctx context.Context, cmd *cobra.Command) error {
 		loginRequest.BlockLanAccess = &blockLANAccess
 	}
 
-	var loginErr error
-
-	var loginResp *proto.LoginResponse
-
-	err = WithBackOff(func() error {
-		var backOffErr error
-		loginResp, backOffErr = client.Login(ctx, &loginRequest)
-		if s, ok := gstatus.FromError(backOffErr); ok && (s.Code() == codes.InvalidArgument ||
-			s.Code() == codes.PermissionDenied ||
-			s.Code() == codes.NotFound ||
-			s.Code() == codes.Unimplemented) {
-			loginErr = backOffErr
-			return nil
-		}
-		return backOffErr
-	})
-	if err != nil {
-		return fmt.Errorf("login backoff cycle failed: %v", err)
+	if cmd.Flag(blockInboundFlag).Changed {
+		loginRequest.BlockInbound = &blockInbound
 	}
 
-	if loginErr != nil {
-		return fmt.Errorf("login failed: %v", loginErr)
+	if cmd.Flag(enableLazyConnectionFlag).Changed {
+		loginRequest.LazyConnectionEnabled = &lazyConnEnabled
 	}
-
-	if loginResp.NeedsSSOLogin {
-
-		openURL(cmd, loginResp.VerificationURIComplete, loginResp.UserCode, noBrowser)
-
-		_, err = client.WaitSSOLogin(ctx, &proto.WaitSSOLoginRequest{UserCode: loginResp.UserCode, Hostname: hostName})
-		if err != nil {
-			return fmt.Errorf("waiting sso login failed with: %v", err)
-		}
-	}
-
-	if _, err := client.Up(ctx, &proto.UpRequest{}); err != nil {
-		return fmt.Errorf("call service up method: %v", err)
-	}
-	cmd.Println("Connected")
-	return nil
+	return &loginRequest, nil
 }
 
 func validateNATExternalIPs(list []string) error {

client/firewall/iptables/manager_linux.go

@@ -147,6 +147,10 @@ func (m *Manager) IsServerRouteSupported() bool {
 	return true
 }
 
+func (m *Manager) IsStateful() bool {
+	return true
+}
+
 func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
@@ -198,7 +202,7 @@ func (m *Manager) AllowNetbird() error {
 	_, err := m.AddPeerFiltering(
 		nil,
 		net.IP{0, 0, 0, 0},
-		"all",
+		firewall.ProtocolALL,
 		nil,
 		nil,
 		firewall.ActionAccept,
@@ -219,10 +223,16 @@ func (m *Manager) SetLogLevel(log.Level) {
 }
 
 func (m *Manager) EnableRouting() error {
+	if err := m.router.ipFwdState.RequestForwarding(); err != nil {
+		return fmt.Errorf("enable IP forwarding: %w", err)
+	}
 	return nil
 }
 
 func (m *Manager) DisableRouting() error {
+	if err := m.router.ipFwdState.ReleaseForwarding(); err != nil {
+		return fmt.Errorf("disable IP forwarding: %w", err)
+	}
 	return nil
 }
 

client/firewall/iptables/manager_linux_test.go

@@ -2,7 +2,7 @@ package iptables
 
 import (
 	"fmt"
-	"net"
+	"net/netip"
 	"testing"
 	"time"
 
@@ -19,11 +19,8 @@ var ifaceMock = &iFaceMock{
 	},
 	AddressFunc: func() wgaddr.Address {
 		return wgaddr.Address{
-			IP: net.ParseIP("10.20.0.1"),
-			Network: &net.IPNet{
-				IP:   net.ParseIP("10.20.0.0"),
-				Mask: net.IPv4Mask(255, 255, 255, 0),
-			},
+			IP:      netip.MustParseAddr("10.20.0.1"),
+			Network: netip.MustParsePrefix("10.20.0.0/24"),
 		}
 	},
 }
@@ -70,12 +67,12 @@ func TestIptablesManager(t *testing.T) {
 
 	var rule2 []fw.Rule
 	t.Run("add second rule", func(t *testing.T) {
-		ip := net.ParseIP("10.20.0.3")
+		ip := netip.MustParseAddr("10.20.0.3")
 		port := &fw.Port{
 			IsRange: true,
 			Values:  []uint16{8043, 8046},
 		}
-		rule2, err = manager.AddPeerFiltering(nil, ip, "tcp", port, nil, fw.ActionAccept, "")
+		rule2, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", port, nil, fw.ActionAccept, "")
 		require.NoError(t, err, "failed to add rule")
 
 		for _, r := range rule2 {
@@ -95,9 +92,9 @@ func TestIptablesManager(t *testing.T) {
 
 	t.Run("reset check", func(t *testing.T) {
 		// add second rule
-		ip := net.ParseIP("10.20.0.3")
+		ip := netip.MustParseAddr("10.20.0.3")
 		port := &fw.Port{Values: []uint16{5353}}
-		_, err = manager.AddPeerFiltering(nil, ip, "udp", nil, port, fw.ActionAccept, "")
+		_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "udp", nil, port, fw.ActionAccept, "")
 		require.NoError(t, err, "failed to add rule")
 
 		err = manager.Close(nil)
@@ -119,11 +116,8 @@ func TestIptablesManagerIPSet(t *testing.T) {
 		},
 		AddressFunc: func() wgaddr.Address {
 			return wgaddr.Address{
-				IP: net.ParseIP("10.20.0.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("10.20.0.0"),
-					Mask: net.IPv4Mask(255, 255, 255, 0),
-				},
+				IP:      netip.MustParseAddr("10.20.0.1"),
+				Network: netip.MustParsePrefix("10.20.0.0/24"),
 			}
 		},
 	}
@@ -144,11 +138,11 @@ func TestIptablesManagerIPSet(t *testing.T) {
 
 	var rule2 []fw.Rule
 	t.Run("add second rule", func(t *testing.T) {
-		ip := net.ParseIP("10.20.0.3")
+		ip := netip.MustParseAddr("10.20.0.3")
 		port := &fw.Port{
 			Values: []uint16{443},
 		}
-		rule2, err = manager.AddPeerFiltering(nil, ip, "tcp", port, nil, fw.ActionAccept, "default")
+		rule2, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", port, nil, fw.ActionAccept, "default")
 		for _, r := range rule2 {
 			require.NoError(t, err, "failed to add rule")
 			require.Equal(t, r.(*Rule).ipsetName, "default-sport", "ipset name must be set")
@@ -186,11 +180,8 @@ func TestIptablesCreatePerformance(t *testing.T) {
 		},
 		AddressFunc: func() wgaddr.Address {
 			return wgaddr.Address{
-				IP: net.ParseIP("10.20.0.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("10.20.0.0"),
-					Mask: net.IPv4Mask(255, 255, 255, 0),
-				},
+				IP:      netip.MustParseAddr("10.20.0.1"),
+				Network: netip.MustParsePrefix("10.20.0.0/24"),
 			}
 		},
 	}
@@ -212,11 +203,11 @@ func TestIptablesCreatePerformance(t *testing.T) {
 
 			require.NoError(t, err)
 
-			ip := net.ParseIP("10.20.0.100")
+			ip := netip.MustParseAddr("10.20.0.100")
 			start := time.Now()
 			for i := 0; i < testMax; i++ {
 				port := &fw.Port{Values: []uint16{uint16(1000 + i)}}
-				_, err = manager.AddPeerFiltering(nil, ip, "tcp", nil, port, fw.ActionAccept, "")
+				_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", nil, port, fw.ActionAccept, "")
 
 				require.NoError(t, err, "failed to add rule")
 			}

client/firewall/iptables/router_linux.go

@@ -248,10 +248,6 @@ func (r *router) deleteIpSet(setName string) error {
 
 // AddNatRule inserts an iptables rule pair into the nat chain
 func (r *router) AddNatRule(pair firewall.RouterPair) error {
-	if err := r.ipFwdState.RequestForwarding(); err != nil {
-		return 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 {
@@ -278,10 +274,6 @@ func (r *router) AddNatRule(pair firewall.RouterPair) error {
 
 // RemoveNatRule removes an iptables rule pair from forwarding and nat chains
 func (r *router) RemoveNatRule(pair firewall.RouterPair) error {
-	if err := r.ipFwdState.ReleaseForwarding(); err != nil {
-		log.Errorf("%v", err)
-	}
-
 	if pair.Masquerade {
 		if err := r.removeNatRule(pair); err != nil {
 			return fmt.Errorf("remove nat rule: %w", err)

client/firewall/manager/firewall.go

@@ -116,6 +116,8 @@ type Manager interface {
 	// IsServerRouteSupported returns true if the firewall supports server side routing operations
 	IsServerRouteSupported() bool
 
+	IsStateful() bool
+
 	AddRouteFiltering(
 		id []byte,
 		sources []netip.Prefix,

client/firewall/nftables/manager_linux.go

@@ -170,6 +170,10 @@ func (m *Manager) IsServerRouteSupported() bool {
 	return true
 }
 
+func (m *Manager) IsStateful() bool {
+	return true
+}
+
 func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
@@ -324,10 +328,16 @@ func (m *Manager) SetLogLevel(log.Level) {
 }
 
 func (m *Manager) EnableRouting() error {
+	if err := m.router.ipFwdState.RequestForwarding(); err != nil {
+		return fmt.Errorf("enable IP forwarding: %w", err)
+	}
 	return nil
 }
 
 func (m *Manager) DisableRouting() error {
+	if err := m.router.ipFwdState.ReleaseForwarding(); err != nil {
+		return fmt.Errorf("disable IP forwarding: %w", err)
+	}
 	return nil
 }
 

client/firewall/nftables/manager_linux_test.go

@@ -3,7 +3,6 @@ package nftables
 import (
 	"bytes"
 	"fmt"
-	"net"
 	"net/netip"
 	"os/exec"
 	"testing"
@@ -25,11 +24,8 @@ var ifaceMock = &iFaceMock{
 	},
 	AddressFunc: func() wgaddr.Address {
 		return wgaddr.Address{
-			IP: net.ParseIP("100.96.0.1"),
-			Network: &net.IPNet{
-				IP:   net.ParseIP("100.96.0.0"),
-				Mask: net.IPv4Mask(255, 255, 255, 0),
-			},
+			IP:      netip.MustParseAddr("100.96.0.1"),
+			Network: netip.MustParsePrefix("100.96.0.0/16"),
 		}
 	},
 }
@@ -70,11 +66,11 @@ func TestNftablesManager(t *testing.T) {
 		time.Sleep(time.Second)
 	}()
 
-	ip := net.ParseIP("100.96.0.1")
+	ip := netip.MustParseAddr("100.96.0.1").Unmap()
 
 	testClient := &nftables.Conn{}
 
-	rule, err := manager.AddPeerFiltering(nil, ip, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{53}}, fw.ActionDrop, "")
+	rule, err := manager.AddPeerFiltering(nil, ip.AsSlice(), fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{53}}, fw.ActionDrop, "")
 	require.NoError(t, err, "failed to add rule")
 
 	err = manager.Flush()
@@ -109,8 +105,6 @@ func TestNftablesManager(t *testing.T) {
 	}
 	compareExprsIgnoringCounters(t, rules[0].Exprs, expectedExprs1)
 
-	ipToAdd, _ := netip.AddrFromSlice(ip)
-	add := ipToAdd.Unmap()
 	expectedExprs2 := []expr.Any{
 		&expr.Payload{
 			DestRegister: 1,
@@ -132,7 +126,7 @@ func TestNftablesManager(t *testing.T) {
 		&expr.Cmp{
 			Op:       expr.CmpOpEq,
 			Register: 1,
-			Data:     add.AsSlice(),
+			Data:     ip.AsSlice(),
 		},
 		&expr.Payload{
 			DestRegister: 1,
@@ -173,11 +167,8 @@ func TestNFtablesCreatePerformance(t *testing.T) {
 		},
 		AddressFunc: func() wgaddr.Address {
 			return wgaddr.Address{
-				IP: net.ParseIP("100.96.0.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("100.96.0.0"),
-					Mask: net.IPv4Mask(255, 255, 255, 0),
-				},
+				IP:      netip.MustParseAddr("100.96.0.1"),
+				Network: netip.MustParsePrefix("100.96.0.0/16"),
 			}
 		},
 	}
@@ -197,11 +188,11 @@ func TestNFtablesCreatePerformance(t *testing.T) {
 				time.Sleep(time.Second)
 			}()
 
-			ip := net.ParseIP("10.20.0.100")
+			ip := netip.MustParseAddr("10.20.0.100")
 			start := time.Now()
 			for i := 0; i < testMax; i++ {
 				port := &fw.Port{Values: []uint16{uint16(1000 + i)}}
-				_, err = manager.AddPeerFiltering(nil, ip, "tcp", nil, port, fw.ActionAccept, "")
+				_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), "tcp", nil, port, fw.ActionAccept, "")
 				require.NoError(t, err, "failed to add rule")
 
 				if i%100 == 0 {
@@ -282,8 +273,8 @@ func TestNftablesManagerCompatibilityWithIptables(t *testing.T) {
 		verifyIptablesOutput(t, stdout, stderr)
 	})
 
-	ip := net.ParseIP("100.96.0.1")
-	_, err = manager.AddPeerFiltering(nil, ip, fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept, "")
+	ip := netip.MustParseAddr("100.96.0.1")
+	_, err = manager.AddPeerFiltering(nil, ip.AsSlice(), fw.ProtocolTCP, nil, &fw.Port{Values: []uint16{80}}, fw.ActionAccept, "")
 	require.NoError(t, err, "failed to add peer filtering rule")
 
 	_, err = manager.AddRouteFiltering(

client/firewall/nftables/router_linux.go

@@ -573,10 +573,6 @@ func (r *router) deleteNftRule(rule *nftables.Rule, ruleKey string) error {
 
 // AddNatRule appends a nftables rule pair to the nat chain
 func (r *router) AddNatRule(pair firewall.RouterPair) error {
-	if err := r.ipFwdState.RequestForwarding(); err != nil {
-		return err
-	}
-
 	if err := r.refreshRulesMap(); err != nil {
 		return fmt.Errorf(refreshRulesMapError, err)
 	}
@@ -1006,10 +1002,6 @@ func (r *router) removeAcceptForwardRulesIptables(ipt *iptables.IPTables) error
 
 // RemoveNatRule removes the prerouting mark rule
 func (r *router) RemoveNatRule(pair firewall.RouterPair) error {
-	if err := r.ipFwdState.ReleaseForwarding(); err != nil {
-		log.Errorf("%v", err)
-	}
-
 	if err := r.refreshRulesMap(); err != nil {
 		return fmt.Errorf(refreshRulesMapError, err)
 	}

client/firewall/uspfilter/conntrack/common.go

@@ -62,5 +62,5 @@ type ConnKey struct {
 }
 
 func (c ConnKey) String() string {
-	return fmt.Sprintf("%s:%d -> %s:%d", c.SrcIP.Unmap(), c.SrcPort, c.DstIP.Unmap(), c.DstPort)
+	return fmt.Sprintf("%s:%d → %s:%d", c.SrcIP.Unmap(), c.SrcPort, c.DstIP.Unmap(), c.DstPort)
 }

client/firewall/uspfilter/conntrack/icmp.go

@@ -3,6 +3,7 @@ package conntrack
 import (
 	"context"
 	"fmt"
+	"net"
 	"net/netip"
 	"sync"
 	"time"
@@ -19,6 +20,10 @@ const (
 	DefaultICMPTimeout = 30 * time.Second
 	// ICMPCleanupInterval is how often we check for stale ICMP connections
 	ICMPCleanupInterval = 15 * time.Second
+
+	// MaxICMPPayloadLength is the maximum length of ICMP payload we consider for original packet info,
+	// which includes the IP header (20 bytes) and transport header (8 bytes)
+	MaxICMPPayloadLength = 28
 )
 
 // ICMPConnKey uniquely identifies an ICMP connection
@@ -29,7 +34,7 @@ type ICMPConnKey struct {
 }
 
 func (i ICMPConnKey) String() string {
-	return fmt.Sprintf("%s -> %s (id %d)", i.SrcIP, i.DstIP, i.ID)
+	return fmt.Sprintf("%s → %s (id %d)", i.SrcIP, i.DstIP, i.ID)
 }
 
 // ICMPConnTrack represents an ICMP connection state
@@ -50,6 +55,72 @@ type ICMPTracker struct {
 	flowLogger    nftypes.FlowLogger
 }
 
+// ICMPInfo holds ICMP type, code, and payload for lazy string formatting in logs
+type ICMPInfo struct {
+	TypeCode    layers.ICMPv4TypeCode
+	PayloadData [MaxICMPPayloadLength]byte
+	// actual length of valid data
+	PayloadLen int
+}
+
+// String implements fmt.Stringer for lazy evaluation in log messages
+func (info ICMPInfo) String() string {
+	if info.isErrorMessage() && info.PayloadLen >= MaxICMPPayloadLength {
+		if origInfo := info.parseOriginalPacket(); origInfo != "" {
+			return fmt.Sprintf("%s (original: %s)", info.TypeCode, origInfo)
+		}
+	}
+
+	return info.TypeCode.String()
+}
+
+// isErrorMessage returns true if this ICMP type carries original packet info
+func (info ICMPInfo) isErrorMessage() bool {
+	typ := info.TypeCode.Type()
+	return typ == 3 || // Destination Unreachable
+		typ == 5 || // Redirect
+		typ == 11 || // Time Exceeded
+		typ == 12 // Parameter Problem
+}
+
+// parseOriginalPacket extracts info about the original packet from ICMP payload
+func (info ICMPInfo) parseOriginalPacket() string {
+	if info.PayloadLen < MaxICMPPayloadLength {
+		return ""
+	}
+
+	// TODO: handle IPv6
+	if version := (info.PayloadData[0] >> 4) & 0xF; version != 4 {
+		return ""
+	}
+
+	protocol := info.PayloadData[9]
+	srcIP := net.IP(info.PayloadData[12:16])
+	dstIP := net.IP(info.PayloadData[16:20])
+
+	transportData := info.PayloadData[20:]
+
+	switch nftypes.Protocol(protocol) {
+	case nftypes.TCP:
+		srcPort := uint16(transportData[0])<<8 | uint16(transportData[1])
+		dstPort := uint16(transportData[2])<<8 | uint16(transportData[3])
+		return fmt.Sprintf("TCP %s:%d → %s:%d", srcIP, srcPort, dstIP, dstPort)
+
+	case nftypes.UDP:
+		srcPort := uint16(transportData[0])<<8 | uint16(transportData[1])
+		dstPort := uint16(transportData[2])<<8 | uint16(transportData[3])
+		return fmt.Sprintf("UDP %s:%d → %s:%d", srcIP, srcPort, dstIP, dstPort)
+
+	case nftypes.ICMP:
+		icmpType := transportData[0]
+		icmpCode := transportData[1]
+		return fmt.Sprintf("ICMP %s → %s (type %d code %d)", srcIP, dstIP, icmpType, icmpCode)
+
+	default:
+		return fmt.Sprintf("Proto %d %s → %s", protocol, srcIP, dstIP)
+	}
+}
+
 // NewICMPTracker creates a new ICMP connection tracker
 func NewICMPTracker(timeout time.Duration, logger *nblog.Logger, flowLogger nftypes.FlowLogger) *ICMPTracker {
 	if timeout == 0 {
@@ -93,30 +164,64 @@ func (t *ICMPTracker) updateIfExists(srcIP netip.Addr, dstIP netip.Addr, id uint
 }
 
 // TrackOutbound records an outbound ICMP connection
-func (t *ICMPTracker) TrackOutbound(srcIP netip.Addr, dstIP netip.Addr, id uint16, typecode layers.ICMPv4TypeCode, size int) {
+func (t *ICMPTracker) TrackOutbound(
+	srcIP netip.Addr,
+	dstIP netip.Addr,
+	id uint16,
+	typecode layers.ICMPv4TypeCode,
+	payload []byte,
+	size int,
+) {
 	if _, exists := t.updateIfExists(dstIP, srcIP, id, nftypes.Egress, size); !exists {
 		// if (inverted direction) conn is not tracked, track this direction
-		t.track(srcIP, dstIP, id, typecode, nftypes.Egress, nil, size)
+		t.track(srcIP, dstIP, id, typecode, nftypes.Egress, nil, payload, size)
 	}
 }
 
 // TrackInbound records an inbound ICMP Echo Request
-func (t *ICMPTracker) TrackInbound(srcIP netip.Addr, dstIP netip.Addr, id uint16, typecode layers.ICMPv4TypeCode, ruleId []byte, size int) {
-	t.track(srcIP, dstIP, id, typecode, nftypes.Ingress, ruleId, size)
+func (t *ICMPTracker) TrackInbound(
+	srcIP netip.Addr,
+	dstIP netip.Addr,
+	id uint16,
+	typecode layers.ICMPv4TypeCode,
+	ruleId []byte,
+	payload []byte,
+	size int,
+) {
+	t.track(srcIP, dstIP, id, typecode, nftypes.Ingress, ruleId, payload, size)
 }
 
 // track is the common implementation for tracking both inbound and outbound ICMP connections
-func (t *ICMPTracker) track(srcIP netip.Addr, dstIP netip.Addr, id uint16, typecode layers.ICMPv4TypeCode, direction nftypes.Direction, ruleId []byte, size int) {
+func (t *ICMPTracker) track(
+	srcIP netip.Addr,
+	dstIP netip.Addr,
+	id uint16,
+	typecode layers.ICMPv4TypeCode,
+	direction nftypes.Direction,
+	ruleId []byte,
+	payload []byte,
+	size int,
+) {
 	key, exists := t.updateIfExists(srcIP, dstIP, id, direction, size)
 	if exists {
 		return
 	}
 
 	typ, code := typecode.Type(), typecode.Code()
+	icmpInfo := ICMPInfo{
+		TypeCode: typecode,
+	}
+	if len(payload) > 0 {
+		icmpInfo.PayloadLen = len(payload)
+		if icmpInfo.PayloadLen > MaxICMPPayloadLength {
+			icmpInfo.PayloadLen = MaxICMPPayloadLength
+		}
+		copy(icmpInfo.PayloadData[:], payload[:icmpInfo.PayloadLen])
+	}
 
 	// non echo requests don't need tracking
 	if typ != uint8(layers.ICMPv4TypeEchoRequest) {
-		t.logger.Trace("New %s ICMP connection %s type %d code %d", direction, key, typ, code)
+		t.logger.Trace("New %s ICMP connection %s - %s", direction, key, icmpInfo)
 		t.sendStartEvent(direction, srcIP, dstIP, typ, code, ruleId, size)
 		return
 	}
@@ -138,7 +243,7 @@ func (t *ICMPTracker) track(srcIP netip.Addr, dstIP netip.Addr, id uint16, typec
 	t.connections[key] = conn
 	t.mutex.Unlock()
 
-	t.logger.Trace("New %s ICMP connection %s type %d code %d", direction, key, typ, code)
+	t.logger.Trace("New %s ICMP connection %s - %s", direction, key, icmpInfo)
 	t.sendEvent(nftypes.TypeStart, conn, ruleId)
 }
 

client/firewall/uspfilter/conntrack/icmp_test.go

@@ -15,7 +15,7 @@ func BenchmarkICMPTracker(b *testing.B) {
 
 		b.ResetTimer()
 		for i := 0; i < b.N; i++ {
-			tracker.TrackOutbound(srcIP, dstIP, uint16(i%65535), 0, 0)
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i%65535), 0, []byte{}, 0)
 		}
 	})
 
@@ -28,7 +28,7 @@ func BenchmarkICMPTracker(b *testing.B) {
 
 		// Pre-populate some connections
 		for i := 0; i < 1000; i++ {
-			tracker.TrackOutbound(srcIP, dstIP, uint16(i), 0, 0)
+			tracker.TrackOutbound(srcIP, dstIP, uint16(i), 0, []byte{}, 0)
 		}
 
 		b.ResetTimer()

client/firewall/uspfilter/filter.go

@@ -39,8 +39,12 @@ const (
 	// EnvForceUserspaceRouter forces userspace routing even if native routing is available.
 	EnvForceUserspaceRouter = "NB_FORCE_USERSPACE_ROUTER"
 
-	// EnvEnableNetstackLocalForwarding enables forwarding of local traffic to the native stack when running netstack
-	// Leaving this on by default introduces a security risk as sockets on listening on localhost only will be accessible
+	// EnvEnableLocalForwarding enables forwarding of local traffic to the native stack for internal (non-NetBird) interfaces.
+	// Default off as it might be security risk because sockets listening on localhost only will become accessible.
+	EnvEnableLocalForwarding = "NB_ENABLE_LOCAL_FORWARDING"
+
+	// EnvEnableNetstackLocalForwarding is an alias for EnvEnableLocalForwarding.
+	// In netstack mode, it enables forwarding of local traffic to the native stack for all interfaces.
 	EnvEnableNetstackLocalForwarding = "NB_ENABLE_NETSTACK_LOCAL_FORWARDING"
 )
 
@@ -71,7 +75,6 @@ type Manager struct {
 	// incomingRules is used for filtering and hooks
 	incomingRules  map[netip.Addr]RuleSet
 	routeRules     RouteRules
-	wgNetwork      *net.IPNet
 	decoders       sync.Pool
 	wgIface        common.IFaceMapper
 	nativeFirewall firewall.Manager
@@ -101,6 +104,12 @@ type Manager struct {
 	flowLogger  nftypes.FlowLogger
 
 	blockRule firewall.Rule
+
+	// Internal 1:1 DNAT
+	dnatEnabled  atomic.Bool
+	dnatMappings map[netip.Addr]netip.Addr
+	dnatMutex    sync.RWMutex
+	dnatBiMap    *biDNATMap
 }
 
 // decoder for packages
@@ -148,6 +157,11 @@ func parseCreateEnv() (bool, bool) {
 		if err != nil {
 			log.Warnf("failed to parse %s: %v", EnvEnableNetstackLocalForwarding, err)
 		}
+	} else if val := os.Getenv(EnvEnableLocalForwarding); val != "" {
+		enableLocalForwarding, err = strconv.ParseBool(val)
+		if err != nil {
+			log.Warnf("failed to parse %s: %v", EnvEnableLocalForwarding, err)
+		}
 	}
 
 	return disableConntrack, enableLocalForwarding
@@ -181,6 +195,7 @@ func create(iface common.IFaceMapper, nativeFirewall firewall.Manager, disableSe
 		flowLogger:          flowLogger,
 		netstack:            netstack.IsEnabled(),
 		localForwarding:     enableLocalForwarding,
+		dnatMappings:        make(map[netip.Addr]netip.Addr),
 	}
 	m.routingEnabled.Store(false)
 
@@ -269,7 +284,7 @@ func (m *Manager) determineRouting() error {
 
 		log.Info("userspace routing is forced")
 
-	case !m.netstack && m.nativeFirewall != nil && m.nativeFirewall.IsServerRouteSupported():
+	case !m.netstack && m.nativeFirewall != nil:
 		// if the OS supports routing natively, then we don't need to filter/route ourselves
 		// netstack mode won't support native routing as there is no interface
 
@@ -326,6 +341,10 @@ func (m *Manager) IsServerRouteSupported() bool {
 	return true
 }
 
+func (m *Manager) IsStateful() bool {
+	return m.stateful
+}
+
 func (m *Manager) AddNatRule(pair firewall.RouterPair) error {
 	if m.nativeRouter.Load() && m.nativeFirewall != nil {
 		return m.nativeFirewall.AddNatRule(pair)
@@ -507,22 +526,6 @@ func (m *Manager) SetLegacyManagement(isLegacy bool) error {
 // Flush doesn't need to be implemented for this manager
 func (m *Manager) Flush() error { return nil }
 
-// AddDNATRule adds a DNAT rule
-func (m *Manager) AddDNATRule(rule firewall.ForwardRule) (firewall.Rule, error) {
-	if m.nativeFirewall == nil {
-		return nil, errNatNotSupported
-	}
-	return m.nativeFirewall.AddDNATRule(rule)
-}
-
-// DeleteDNATRule deletes a DNAT rule
-func (m *Manager) DeleteDNATRule(rule firewall.Rule) error {
-	if m.nativeFirewall == nil {
-		return errNatNotSupported
-	}
-	return m.nativeFirewall.DeleteDNATRule(rule)
-}
-
 // UpdateSet updates the rule destinations associated with the given set
 // by merging the existing prefixes with the new ones, then deduplicating.
 func (m *Manager) UpdateSet(set firewall.Set, prefixes []netip.Prefix) error {
@@ -569,14 +572,14 @@ func (m *Manager) UpdateSet(set firewall.Set, prefixes []netip.Prefix) error {
 	return nil
 }
 
-// DropOutgoing filter outgoing packets
-func (m *Manager) DropOutgoing(packetData []byte, size int) bool {
-	return m.processOutgoingHooks(packetData, size)
+// FilterOutBound filters outgoing packets
+func (m *Manager) FilterOutbound(packetData []byte, size int) bool {
+	return m.filterOutbound(packetData, size)
 }
 
-// DropIncoming filter incoming packets
-func (m *Manager) DropIncoming(packetData []byte, size int) bool {
-	return m.dropFilter(packetData, size)
+// FilterInbound filters incoming packets
+func (m *Manager) FilterInbound(packetData []byte, size int) bool {
+	return m.filterInbound(packetData, size)
 }
 
 // UpdateLocalIPs updates the list of local IPs
@@ -584,7 +587,7 @@ func (m *Manager) UpdateLocalIPs() error {
 	return m.localipmanager.UpdateLocalIPs(m.wgIface)
 }
 
-func (m *Manager) processOutgoingHooks(packetData []byte, size int) bool {
+func (m *Manager) filterOutbound(packetData []byte, size int) bool {
 	d := m.decoders.Get().(*decoder)
 	defer m.decoders.Put(d)
 
@@ -606,9 +609,8 @@ func (m *Manager) processOutgoingHooks(packetData []byte, size int) bool {
 		return true
 	}
 
-	if m.stateful {
-		m.trackOutbound(d, srcIP, dstIP, size)
-	}
+	m.trackOutbound(d, srcIP, dstIP, size)
+	m.translateOutboundDNAT(packetData, d)
 
 	return false
 }
@@ -660,7 +662,7 @@ func (m *Manager) trackOutbound(d *decoder, srcIP, dstIP netip.Addr, size int) {
 		flags := getTCPFlags(&d.tcp)
 		m.tcpTracker.TrackOutbound(srcIP, dstIP, uint16(d.tcp.SrcPort), uint16(d.tcp.DstPort), flags, size)
 	case layers.LayerTypeICMPv4:
-		m.icmpTracker.TrackOutbound(srcIP, dstIP, d.icmp4.Id, d.icmp4.TypeCode, size)
+		m.icmpTracker.TrackOutbound(srcIP, dstIP, d.icmp4.Id, d.icmp4.TypeCode, d.icmp4.Payload, size)
 	}
 }
 
@@ -673,7 +675,7 @@ func (m *Manager) trackInbound(d *decoder, srcIP, dstIP netip.Addr, ruleID []byt
 		flags := getTCPFlags(&d.tcp)
 		m.tcpTracker.TrackInbound(srcIP, dstIP, uint16(d.tcp.SrcPort), uint16(d.tcp.DstPort), flags, ruleID, size)
 	case layers.LayerTypeICMPv4:
-		m.icmpTracker.TrackInbound(srcIP, dstIP, d.icmp4.Id, d.icmp4.TypeCode, ruleID, size)
+		m.icmpTracker.TrackInbound(srcIP, dstIP, d.icmp4.Id, d.icmp4.TypeCode, ruleID, d.icmp4.Payload, size)
 	}
 }
 
@@ -712,9 +714,9 @@ func (m *Manager) udpHooksDrop(dport uint16, dstIP netip.Addr, packetData []byte
 	return false
 }
 
-// dropFilter implements filtering logic for incoming packets.
+// filterInbound implements filtering logic for incoming packets.
 // If it returns true, the packet should be dropped.
-func (m *Manager) dropFilter(packetData []byte, size int) bool {
+func (m *Manager) filterInbound(packetData []byte, size int) bool {
 	d := m.decoders.Get().(*decoder)
 	defer m.decoders.Put(d)
 
@@ -736,8 +738,15 @@ func (m *Manager) dropFilter(packetData []byte, size int) bool {
 		return false
 	}
 
-	// For all inbound traffic, first check if it matches a tracked connection.
-	// This must happen before any other filtering because the packets are statefully tracked.
+	if translated := m.translateInboundReverse(packetData, d); translated {
+		// Re-decode after translation to get original addresses
+		if err := d.parser.DecodeLayers(packetData, &d.decoded); err != nil {
+			m.logger.Error("Failed to re-decode packet after reverse DNAT: %v", err)
+			return true
+		}
+		srcIP, dstIP = m.extractIPs(d)
+	}
+
 	if m.stateful && m.isValidTrackedConnection(d, srcIP, dstIP, size) {
 		return false
 	}
@@ -777,9 +786,10 @@ func (m *Manager) handleLocalTraffic(d *decoder, srcIP, dstIP netip.Addr, packet
 		return true
 	}
 
-	// if running in netstack mode we need to pass this to the forwarder
-	if m.netstack && m.localForwarding {
-		return m.handleNetstackLocalTraffic(packetData)
+	// If requested we pass local traffic to internal interfaces to the forwarder.
+	// netstack doesn't have an interface to forward packets to the native stack so we always need to use the forwarder.
+	if m.localForwarding && (m.netstack || dstIP != m.wgIface.Address().IP) {
+		return m.handleForwardedLocalTraffic(packetData)
 	}
 
 	// track inbound packets to get the correct direction and session id for flows
@@ -789,8 +799,7 @@ func (m *Manager) handleLocalTraffic(d *decoder, srcIP, dstIP netip.Addr, packet
 	return false
 }
 
-func (m *Manager) handleNetstackLocalTraffic(packetData []byte) bool {
-
+func (m *Manager) handleForwardedLocalTraffic(packetData []byte) bool {
 	fwd := m.forwarder.Load()
 	if fwd == nil {
 		m.logger.Trace("Dropping local packet (forwarder not initialized)")
@@ -1088,11 +1097,6 @@ func (m *Manager) ruleMatches(rule *RouteRule, srcAddr, dstAddr netip.Addr, prot
 	return true
 }
 
-// SetNetwork of the wireguard interface to which filtering applied
-func (m *Manager) SetNetwork(network *net.IPNet) {
-	m.wgNetwork = network
-}
-
 // AddUDPPacketHook calls hook when UDP packet from given direction matched
 //
 // Hook function returns flag which indicates should be the matched package dropped or not

client/firewall/uspfilter/filter_bench_test.go

@@ -174,11 +174,6 @@ func BenchmarkCoreFiltering(b *testing.B) {
 					require.NoError(b, manager.Close(nil))
 				})
 
-				manager.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("100.64.0.0"),
-					Mask: net.CIDRMask(10, 32),
-				}
-
 				// Apply scenario-specific setup
 				sc.setupFunc(manager)
 
@@ -193,13 +188,13 @@ func BenchmarkCoreFiltering(b *testing.B) {
 
 				// For stateful scenarios, establish the connection
 				if sc.stateful {
-					manager.processOutgoingHooks(outbound, 0)
+					manager.filterOutbound(outbound, 0)
 				}
 
 				// Measure inbound packet processing
 				b.ResetTimer()
 				for i := 0; i < b.N; i++ {
-					manager.dropFilter(inbound, 0)
+					manager.filterInbound(inbound, 0)
 				}
 			})
 		}
@@ -219,18 +214,13 @@ func BenchmarkStateScaling(b *testing.B) {
 				require.NoError(b, manager.Close(nil))
 			})
 
-			manager.wgNetwork = &net.IPNet{
-				IP:   net.ParseIP("100.64.0.0"),
-				Mask: net.CIDRMask(10, 32),
-			}
-
 			// Pre-populate connection table
 			srcIPs := generateRandomIPs(count)
 			dstIPs := generateRandomIPs(count)
 			for i := 0; i < count; i++ {
 				outbound := generatePacket(b, srcIPs[i], dstIPs[i],
 					uint16(1024+i), 80, layers.IPProtocolTCP)
-				manager.processOutgoingHooks(outbound, 0)
+				manager.filterOutbound(outbound, 0)
 			}
 
 			// Test packet
@@ -238,11 +228,11 @@ func BenchmarkStateScaling(b *testing.B) {
 			testIn := generatePacket(b, dstIPs[0], srcIPs[0], 80, 1024, layers.IPProtocolTCP)
 
 			// First establish our test connection
-			manager.processOutgoingHooks(testOut, 0)
+			manager.filterOutbound(testOut, 0)
 
 			b.ResetTimer()
 			for i := 0; i < b.N; i++ {
-				manager.dropFilter(testIn, 0)
+				manager.filterInbound(testIn, 0)
 			}
 		})
 	}
@@ -267,23 +257,18 @@ func BenchmarkEstablishmentOverhead(b *testing.B) {
 				require.NoError(b, manager.Close(nil))
 			})
 
-			manager.wgNetwork = &net.IPNet{
-				IP:   net.ParseIP("100.64.0.0"),
-				Mask: net.CIDRMask(10, 32),
-			}
-
 			srcIP := generateRandomIPs(1)[0]
 			dstIP := generateRandomIPs(1)[0]
 			outbound := generatePacket(b, srcIP, dstIP, 1024, 80, layers.IPProtocolTCP)
 			inbound := generatePacket(b, dstIP, srcIP, 80, 1024, layers.IPProtocolTCP)
 
 			if sc.established {
-				manager.processOutgoingHooks(outbound, 0)
+				manager.filterOutbound(outbound, 0)
 			}
 
 			b.ResetTimer()
 			for i := 0; i < b.N; i++ {
-				manager.dropFilter(inbound, 0)
+				manager.filterInbound(inbound, 0)
 			}
 		})
 	}
@@ -304,10 +289,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolTCP,
 			state: "new",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("100.64.0.0"),
-					Mask: net.CIDRMask(10, 32),
-				}
 				b.Setenv("NB_DISABLE_CONNTRACK", "1")
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -321,10 +302,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolTCP,
 			state: "established",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("100.64.0.0"),
-					Mask: net.CIDRMask(10, 32),
-				}
 				b.Setenv("NB_DISABLE_CONNTRACK", "1")
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -339,10 +316,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolUDP,
 			state: "new",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("100.64.0.0"),
-					Mask: net.CIDRMask(10, 32),
-				}
 				b.Setenv("NB_DISABLE_CONNTRACK", "1")
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -356,10 +329,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolUDP,
 			state: "established",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("100.64.0.0"),
-					Mask: net.CIDRMask(10, 32),
-				}
 				b.Setenv("NB_DISABLE_CONNTRACK", "1")
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -373,10 +342,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolTCP,
 			state: "new",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("0.0.0.0"),
-					Mask: net.CIDRMask(0, 32),
-				}
 				require.NoError(b, os.Unsetenv("NB_DISABLE_CONNTRACK"))
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -390,10 +355,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolTCP,
 			state: "established",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("0.0.0.0"),
-					Mask: net.CIDRMask(0, 32),
-				}
 				require.NoError(b, os.Unsetenv("NB_DISABLE_CONNTRACK"))
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -408,10 +369,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolTCP,
 			state: "post_handshake",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("0.0.0.0"),
-					Mask: net.CIDRMask(0, 32),
-				}
 				require.NoError(b, os.Unsetenv("NB_DISABLE_CONNTRACK"))
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -426,10 +383,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolUDP,
 			state: "new",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("0.0.0.0"),
-					Mask: net.CIDRMask(0, 32),
-				}
 				require.NoError(b, os.Unsetenv("NB_DISABLE_CONNTRACK"))
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -443,10 +396,6 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			proto: layers.IPProtocolUDP,
 			state: "established",
 			setupFunc: func(m *Manager) {
-				m.wgNetwork = &net.IPNet{
-					IP:   net.ParseIP("0.0.0.0"),
-					Mask: net.CIDRMask(0, 32),
-				}
 				require.NoError(b, os.Unsetenv("NB_DISABLE_CONNTRACK"))
 			},
 			genPackets: func(srcIP, dstIP net.IP) ([]byte, []byte) {
@@ -477,25 +426,25 @@ func BenchmarkRoutedNetworkReturn(b *testing.B) {
 			// For stateful cases and established connections
 			if !strings.Contains(sc.name, "allow_non_wg") ||
 				(strings.Contains(sc.state, "established") || sc.state == "post_handshake") {
-				manager.processOutgoingHooks(outbound, 0)
+				manager.filterOutbound(outbound, 0)
 
 				// For TCP post-handshake, simulate full handshake
 				if sc.state == "post_handshake" {
 					// SYN
 					syn := generateTCPPacketWithFlags(b, srcIP, dstIP, 1024, 80, uint16(conntrack.TCPSyn))
-					manager.processOutgoingHooks(syn, 0)
+					manager.filterOutbound(syn, 0)
 					// SYN-ACK
 					synack := generateTCPPacketWithFlags(b, dstIP, srcIP, 80, 1024, uint16(conntrack.TCPSyn|conntrack.TCPAck))
-					manager.dropFilter(synack, 0)
+					manager.filterInbound(synack, 0)
 					// ACK
 					ack := generateTCPPacketWithFlags(b, srcIP, dstIP, 1024, 80, uint16(conntrack.TCPAck))
-					manager.processOutgoingHooks(ack, 0)
+					manager.filterOutbound(ack, 0)
 				}
 			}
 
 			b.ResetTimer()
 			for i := 0; i < b.N; i++ {
-				manager.dropFilter(inbound, 0)
+				manager.filterInbound(inbound, 0)
 			}
 		})
 	}
@@ -593,11 +542,6 @@ func BenchmarkLongLivedConnections(b *testing.B) {
 				require.NoError(b, manager.Close(nil))
 			})
 
-			manager.SetNetwork(&net.IPNet{
-				IP:   net.ParseIP("100.64.0.0"),
-				Mask: net.CIDRMask(10, 32),
-			})
-
 			// Setup initial state based on scenario
 			if sc.rules {
 				// Single rule to allow all return traffic from port 80
@@ -624,17 +568,17 @@ func BenchmarkLongLivedConnections(b *testing.B) {
 				// Initial SYN
 				syn := generateTCPPacketWithFlags(b, srcIPs[i], dstIPs[i],
 					uint16(1024+i), 80, uint16(conntrack.TCPSyn))
-				manager.processOutgoingHooks(syn, 0)
+				manager.filterOutbound(syn, 0)
 
 				// SYN-ACK
 				synack := generateTCPPacketWithFlags(b, dstIPs[i], srcIPs[i],
 					80, uint16(1024+i), uint16(conntrack.TCPSyn|conntrack.TCPAck))
-				manager.dropFilter(synack, 0)
+				manager.filterInbound(synack, 0)
 
 				// ACK
 				ack := generateTCPPacketWithFlags(b, srcIPs[i], dstIPs[i],
 					uint16(1024+i), 80, uint16(conntrack.TCPAck))
-				manager.processOutgoingHooks(ack, 0)
+				manager.filterOutbound(ack, 0)
 			}
 
 			// Prepare test packets simulating bidirectional traffic
@@ -655,9 +599,9 @@ func BenchmarkLongLivedConnections(b *testing.B) {
 
 				// Simulate bidirectional traffic
 				// First outbound data
-				manager.processOutgoingHooks(outPackets[connIdx], 0)
+				manager.filterOutbound(outPackets[connIdx], 0)
 				// Then inbound response - this is what we're actually measuring
-				manager.dropFilter(inPackets[connIdx], 0)
+				manager.filterInbound(inPackets[connIdx], 0)
 			}
 		})
 	}
@@ -681,11 +625,6 @@ func BenchmarkShortLivedConnections(b *testing.B) {
 				require.NoError(b, manager.Close(nil))
 			})
 
-			manager.SetNetwork(&net.IPNet{
-				IP:   net.ParseIP("100.64.0.0"),
-				Mask: net.CIDRMask(10, 32),
-			})
-
 			// Setup initial state based on scenario
 			if sc.rules {
 				// Single rule to allow all return traffic from port 80
@@ -761,19 +700,19 @@ func BenchmarkShortLivedConnections(b *testing.B) {
 				p := patterns[connIdx]
 
 				// Connection establishment
-				manager.processOutgoingHooks(p.syn, 0)
-				manager.dropFilter(p.synAck, 0)
-				manager.processOutgoingHooks(p.ack, 0)
+				manager.filterOutbound(p.syn, 0)
+				manager.filterInbound(p.synAck, 0)
+				manager.filterOutbound(p.ack, 0)
 
 				// Data transfer
-				manager.processOutgoingHooks(p.request, 0)
-				manager.dropFilter(p.response, 0)
+				manager.filterOutbound(p.request, 0)
+				manager.filterInbound(p.response, 0)
 
 				// Connection teardown
-				manager.processOutgoingHooks(p.finClient, 0)
-				manager.dropFilter(p.ackServer, 0)
-				manager.dropFilter(p.finServer, 0)
-				manager.processOutgoingHooks(p.ackClient, 0)
+				manager.filterOutbound(p.finClient, 0)
+				manager.filterInbound(p.ackServer, 0)
+				manager.filterInbound(p.finServer, 0)
+				manager.filterOutbound(p.ackClient, 0)
 			}
 		})
 	}
@@ -797,11 +736,6 @@ func BenchmarkParallelLongLivedConnections(b *testing.B) {
 				require.NoError(b, manager.Close(nil))
 			})
 
-			manager.SetNetwork(&net.IPNet{
-				IP:   net.ParseIP("100.64.0.0"),
-				Mask: net.CIDRMask(10, 32),
-			})
-
 			// Setup initial state based on scenario
 			if sc.rules {
 				_, err := manager.AddPeerFiltering(nil, net.ParseIP("0.0.0.0"), fw.ProtocolTCP, &fw.Port{Values: []uint16{80}}, nil, fw.ActionAccept, "")
@@ -826,15 +760,15 @@ func BenchmarkParallelLongLivedConnections(b *testing.B) {
 			for i := 0; i < sc.connCount; i++ {
 				syn := generateTCPPacketWithFlags(b, srcIPs[i], dstIPs[i],
 					uint16(1024+i), 80, uint16(conntrack.TCPSyn))
-				manager.processOutgoingHooks(syn, 0)
+				manager.filterOutbound(syn, 0)
 
 				synack := generateTCPPacketWithFlags(b, dstIPs[i], srcIPs[i],
 					80, uint16(1024+i), uint16(conntrack.TCPSyn|conntrack.TCPAck))
-				manager.dropFilter(synack, 0)
+				manager.filterInbound(synack, 0)
 
 				ack := generateTCPPacketWithFlags(b, srcIPs[i], dstIPs[i],
 					uint16(1024+i), 80, uint16(conntrack.TCPAck))
-				manager.processOutgoingHooks(ack, 0)
+				manager.filterOutbound(ack, 0)
 			}
 
 			// Pre-generate test packets
@@ -856,8 +790,8 @@ func BenchmarkParallelLongLivedConnections(b *testing.B) {
 					counter++
 
 					// Simulate bidirectional traffic
-					manager.processOutgoingHooks(outPackets[connIdx], 0)
-					manager.dropFilter(inPackets[connIdx], 0)
+					manager.filterOutbound(outPackets[connIdx], 0)
+					manager.filterInbound(inPackets[connIdx], 0)
 				}
 			})
 		})
@@ -882,11 +816,6 @@ func BenchmarkParallelShortLivedConnections(b *testing.B) {
 				require.NoError(b, manager.Close(nil))
 			})
 
-			manager.SetNetwork(&net.IPNet{
-				IP:   net.ParseIP("100.64.0.0"),
-				Mask: net.CIDRMask(10, 32),
-			})
-
 			if sc.rules {
 				_, err := manager.AddPeerFiltering(nil, net.ParseIP("0.0.0.0"), fw.ProtocolTCP, &fw.Port{Values: []uint16{80}}, nil, fw.ActionAccept, "")
 				require.NoError(b, err)
@@ -950,17 +879,17 @@ func BenchmarkParallelShortLivedConnections(b *testing.B) {
 					p := patterns[connIdx]
 
 					// Full connection lifecycle
-					manager.processOutgoingHooks(p.syn, 0)
-					manager.dropFilter(p.synAck, 0)
-					manager.processOutgoingHooks(p.ack, 0)
+					manager.filterOutbound(p.syn, 0)
+					manager.filterInbound(p.synAck, 0)
+					manager.filterOutbound(p.ack, 0)
 
-					manager.processOutgoingHooks(p.request, 0)
-					manager.dropFilter(p.response, 0)
+					manager.filterOutbound(p.request, 0)
+					manager.filterInbound(p.response, 0)
 
-					manager.processOutgoingHooks(p.finClient, 0)
-					manager.dropFilter(p.ackServer, 0)
-					manager.dropFilter(p.finServer, 0)
-					manager.processOutgoingHooks(p.ackClient, 0)
+					manager.filterOutbound(p.finClient, 0)
+					manager.filterInbound(p.ackServer, 0)
+					manager.filterInbound(p.finServer, 0)
+					manager.filterOutbound(p.ackClient, 0)
 				}
 			})
 		})
@@ -1032,7 +961,8 @@ func BenchmarkRouteACLs(b *testing.B) {
 	}
 
 	for _, r := range rules {
-		_, err := manager.AddRouteFiltering(nil, r.sources, r.dest, r.proto, nil, r.port, fw.ActionAccept)
+		dst := fw.Network{Prefix: r.dest}
+		_, err := manager.AddRouteFiltering(nil, r.sources, dst, r.proto, nil, r.port, fw.ActionAccept)
 		if err != nil {
 			b.Fatal(err)
 		}

client/firewall/uspfilter/filter_filter_test.go

@@ -19,12 +19,8 @@ import (
 )
 
 func TestPeerACLFiltering(t *testing.T) {
-	localIP := net.ParseIP("100.10.0.100")
-	wgNet := &net.IPNet{
-		IP:   net.ParseIP("100.10.0.0"),
-		Mask: net.CIDRMask(16, 32),
-	}
-
+	localIP := netip.MustParseAddr("100.10.0.100")
+	wgNet := netip.MustParsePrefix("100.10.0.0/16")
 	ifaceMock := &IFaceMock{
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
 		AddressFunc: func() wgaddr.Address {
@@ -43,8 +39,6 @@ func TestPeerACLFiltering(t *testing.T) {
 		require.NoError(t, manager.Close(nil))
 	})
 
-	manager.wgNetwork = wgNet
-
 	err = manager.UpdateLocalIPs()
 	require.NoError(t, err)
 
@@ -468,7 +462,7 @@ func TestPeerACLFiltering(t *testing.T) {
 
 	t.Run("Implicit DROP (no rules)", func(t *testing.T) {
 		packet := createTestPacket(t, "100.10.0.1", "100.10.0.100", fw.ProtocolTCP, 12345, 443)
-		isDropped := manager.DropIncoming(packet, 0)
+		isDropped := manager.FilterInbound(packet, 0)
 		require.True(t, isDropped, "Packet should be dropped when no rules exist")
 	})
 
@@ -515,7 +509,7 @@ func TestPeerACLFiltering(t *testing.T) {
 			})
 
 			packet := createTestPacket(t, tc.srcIP, tc.dstIP, tc.proto, tc.srcPort, tc.dstPort)
-			isDropped := manager.DropIncoming(packet, 0)
+			isDropped := manager.FilterInbound(packet, 0)
 			require.Equal(t, tc.shouldBeBlocked, isDropped)
 		})
 	}
@@ -581,14 +575,13 @@ func setupRoutedManager(tb testing.TB, network string) *Manager {
 	dev := mocks.NewMockDevice(ctrl)
 	dev.EXPECT().MTU().Return(1500, nil).AnyTimes()
 
-	localIP, wgNet, err := net.ParseCIDR(network)
-	require.NoError(tb, err)
+	wgNet := netip.MustParsePrefix(network)
 
 	ifaceMock := &IFaceMock{
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
 		AddressFunc: func() wgaddr.Address {
 			return wgaddr.Address{
-				IP:      localIP,
+				IP:      wgNet.Addr(),
 				Network: wgNet,
 			}
 		},
@@ -1240,7 +1233,7 @@ func TestRouteACLFiltering(t *testing.T) {
 			srcIP := netip.MustParseAddr(tc.srcIP)
 			dstIP := netip.MustParseAddr(tc.dstIP)
 
-			// testing routeACLsPass only and not DropIncoming, as routed packets are dropped after being passed
+			// testing routeACLsPass only and not FilterInbound, as routed packets are dropped after being passed
 			// to the forwarder
 			_, isAllowed := manager.routeACLsPass(srcIP, dstIP, tc.proto, tc.srcPort, tc.dstPort)
 			require.Equal(t, tc.shouldPass, isAllowed)
@@ -1440,11 +1433,8 @@ func TestRouteACLSet(t *testing.T) {
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
 		AddressFunc: func() wgaddr.Address {
 			return wgaddr.Address{
-				IP: net.ParseIP("100.10.0.100"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("100.10.0.0"),
-					Mask: net.CIDRMask(16, 32),
-				},
+				IP:      netip.MustParseAddr("100.10.0.100"),
+				Network: netip.MustParsePrefix("100.10.0.0/16"),
 			}
 		},
 	}

client/firewall/uspfilter/filter_test.go

@@ -271,11 +271,8 @@ func TestNotMatchByIP(t *testing.T) {
 		SetFilterFunc: func(device.PacketFilter) error { return nil },
 		AddressFunc: func() wgaddr.Address {
 			return wgaddr.Address{
-				IP: net.ParseIP("100.10.0.100"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("100.10.0.0"),
-					Mask: net.CIDRMask(16, 32),
-				},
+				IP:      netip.MustParseAddr("100.10.0.100"),
+				Network: netip.MustParsePrefix("100.10.0.0/16"),
 			}
 		},
 	}
@@ -285,10 +282,6 @@ func TestNotMatchByIP(t *testing.T) {
 		t.Errorf("failed to create Manager: %v", err)
 		return
 	}
-	m.wgNetwork = &net.IPNet{
-		IP:   net.ParseIP("100.10.0.0"),
-		Mask: net.CIDRMask(16, 32),
-	}
 
 	ip := net.ParseIP("0.0.0.0")
 	proto := fw.ProtocolUDP
@@ -328,7 +321,7 @@ func TestNotMatchByIP(t *testing.T) {
 		return
 	}
 
-	if m.dropFilter(buf.Bytes(), 0) {
+	if m.filterInbound(buf.Bytes(), 0) {
 		t.Errorf("expected packet to be accepted")
 		return
 	}
@@ -396,10 +389,6 @@ func TestProcessOutgoingHooks(t *testing.T) {
 	}, false, flowLogger)
 	require.NoError(t, err)
 
-	manager.wgNetwork = &net.IPNet{
-		IP:   net.ParseIP("100.10.0.0"),
-		Mask: net.CIDRMask(16, 32),
-	}
 	manager.udpTracker.Close()
 	manager.udpTracker = conntrack.NewUDPTracker(100*time.Millisecond, logger, flowLogger)
 	defer func() {
@@ -458,7 +447,7 @@ func TestProcessOutgoingHooks(t *testing.T) {
 	require.NoError(t, err)
 
 	// Test hook gets called
-	result := manager.processOutgoingHooks(buf.Bytes(), 0)
+	result := manager.filterOutbound(buf.Bytes(), 0)
 	require.True(t, result)
 	require.True(t, hookCalled)
 
@@ -468,7 +457,7 @@ func TestProcessOutgoingHooks(t *testing.T) {
 	err = gopacket.SerializeLayers(buf, opts, ipv4)
 	require.NoError(t, err)
 
-	result = manager.processOutgoingHooks(buf.Bytes(), 0)
+	result = manager.filterOutbound(buf.Bytes(), 0)
 	require.False(t, result)
 }
 
@@ -509,11 +498,6 @@ func TestStatefulFirewall_UDPTracking(t *testing.T) {
 	}, false, flowLogger)
 	require.NoError(t, err)
 
-	manager.wgNetwork = &net.IPNet{
-		IP:   net.ParseIP("100.10.0.0"),
-		Mask: net.CIDRMask(16, 32),
-	}
-
 	manager.udpTracker.Close() // Close the existing tracker
 	manager.udpTracker = conntrack.NewUDPTracker(200*time.Millisecond, logger, flowLogger)
 	manager.decoders = sync.Pool{
@@ -569,7 +553,7 @@ func TestStatefulFirewall_UDPTracking(t *testing.T) {
 	require.NoError(t, err)
 
 	// Process outbound packet and verify connection tracking
-	drop := manager.DropOutgoing(outboundBuf.Bytes(), 0)
+	drop := manager.FilterOutbound(outboundBuf.Bytes(), 0)
 	require.False(t, drop, "Initial outbound packet should not be dropped")
 
 	// Verify connection was tracked
@@ -636,7 +620,7 @@ func TestStatefulFirewall_UDPTracking(t *testing.T) {
 	for _, cp := range checkPoints {
 		time.Sleep(cp.sleep)
 
-		drop = manager.dropFilter(inboundBuf.Bytes(), 0)
+		drop = manager.filterInbound(inboundBuf.Bytes(), 0)
 		require.Equal(t, cp.shouldAllow, !drop, cp.description)
 
 		// If the connection should still be valid, verify it exists
@@ -685,7 +669,7 @@ func TestStatefulFirewall_UDPTracking(t *testing.T) {
 	}
 
 	// Create a new outbound connection for invalid tests
-	drop = manager.processOutgoingHooks(outboundBuf.Bytes(), 0)
+	drop = manager.filterOutbound(outboundBuf.Bytes(), 0)
 	require.False(t, drop, "Second outbound packet should not be dropped")
 
 	for _, tc := range invalidCases {
@@ -707,7 +691,7 @@ func TestStatefulFirewall_UDPTracking(t *testing.T) {
 			require.NoError(t, err)
 
 			// Verify the invalid packet is dropped
-			drop = manager.dropFilter(testBuf.Bytes(), 0)
+			drop = manager.filterInbound(testBuf.Bytes(), 0)
 			require.True(t, drop, tc.description)
 		})
 	}

client/firewall/uspfilter/forwarder/endpoint.go

@@ -86,5 +86,5 @@ type epID stack.TransportEndpointID
 
 func (i epID) String() string {
 	// src and remote is swapped
-	return fmt.Sprintf("%s:%d -> %s:%d", i.RemoteAddress, i.RemotePort, i.LocalAddress, i.LocalPort)
+	return fmt.Sprintf("%s:%d → %s:%d", i.RemoteAddress, i.RemotePort, i.LocalAddress, i.LocalPort)
 }

client/firewall/uspfilter/forwarder/forwarder.go

@@ -41,7 +41,7 @@ type Forwarder struct {
 	udpForwarder *udpForwarder
 	ctx          context.Context
 	cancel       context.CancelFunc
-	ip           net.IP
+	ip           tcpip.Address
 	netstack     bool
 }
 
@@ -71,12 +71,11 @@ func New(iface common.IFaceMapper, logger *nblog.Logger, flowLogger nftypes.Flow
 		return nil, fmt.Errorf("failed to create NIC: %v", err)
 	}
 
-	ones, _ := iface.Address().Network.Mask.Size()
 	protoAddr := tcpip.ProtocolAddress{
 		Protocol: ipv4.ProtocolNumber,
 		AddressWithPrefix: tcpip.AddressWithPrefix{
-			Address:   tcpip.AddrFromSlice(iface.Address().IP.To4()),
-			PrefixLen: ones,
+			Address:   tcpip.AddrFromSlice(iface.Address().IP.AsSlice()),
+			PrefixLen: iface.Address().Network.Bits(),
 		},
 	}
 
@@ -116,7 +115,7 @@ func New(iface common.IFaceMapper, logger *nblog.Logger, flowLogger nftypes.Flow
 		ctx:          ctx,
 		cancel:       cancel,
 		netstack:     netstack,
-		ip:           iface.Address().IP,
+		ip:           tcpip.AddrFromSlice(iface.Address().IP.AsSlice()),
 	}
 
 	receiveWindow := defaultReceiveWindow
@@ -167,7 +166,7 @@ func (f *Forwarder) Stop() {
 }
 
 func (f *Forwarder) determineDialAddr(addr tcpip.Address) net.IP {
-	if f.netstack && f.ip.Equal(addr.AsSlice()) {
+	if f.netstack && f.ip.Equal(addr) {
 		return net.IPv4(127, 0, 0, 1)
 	}
 	return addr.AsSlice()
@@ -179,7 +178,6 @@ func (f *Forwarder) RegisterRuleID(srcIP, dstIP netip.Addr, srcPort, dstPort uin
 }
 
 func (f *Forwarder) getRuleID(srcIP, dstIP netip.Addr, srcPort, dstPort uint16) ([]byte, bool) {
-
 	if value, ok := f.ruleIdMap.Load(buildKey(srcIP, dstIP, srcPort, dstPort)); ok {
 		return value.([]byte), true
 	} else if value, ok := f.ruleIdMap.Load(buildKey(dstIP, srcIP, dstPort, srcPort)); ok {

client/firewall/uspfilter/forwarder/tcp.go

@@ -111,12 +111,12 @@ func (f *Forwarder) proxyTCP(id stack.TransportEndpointID, inConn *gonet.TCPConn
 
 	if errInToOut != nil {
 		if !isClosedError(errInToOut) {
-			f.logger.Error("proxyTCP: copy error (in -> out): %v", errInToOut)
+			f.logger.Error("proxyTCP: copy error (in → out) for %s: %v", epID(id), errInToOut)
 		}
 	}
 	if errOutToIn != nil {
 		if !isClosedError(errOutToIn) {
-			f.logger.Error("proxyTCP: copy error (out -> in): %v", errOutToIn)
+			f.logger.Error("proxyTCP: copy error (out → in) for %s: %v", epID(id), errOutToIn)
 		}
 	}
 

client/firewall/uspfilter/forwarder/udp.go

@@ -250,10 +250,10 @@ func (f *Forwarder) proxyUDP(ctx context.Context, pConn *udpPacketConn, id stack
 	wg.Wait()
 
 	if outboundErr != nil && !isClosedError(outboundErr) {
-		f.logger.Error("proxyUDP: copy error (outbound->inbound): %v", outboundErr)
+		f.logger.Error("proxyUDP: copy error (outbound→inbound) for %s: %v", epID(id), outboundErr)
 	}
 	if inboundErr != nil && !isClosedError(inboundErr) {
-		f.logger.Error("proxyUDP: copy error (inbound->outbound): %v", inboundErr)
+		f.logger.Error("proxyUDP: copy error (inbound→outbound) for %s: %v", epID(id), inboundErr)
 	}
 
 	var rxPackets, txPackets uint64

client/firewall/uspfilter/localip.go

@@ -45,24 +45,26 @@ func (m *localIPManager) setBitmapBit(ip net.IP) {
 	m.ipv4Bitmap[high].bitmap[index] |= 1 << bit
 }
 
-func (m *localIPManager) setBitInBitmap(ip net.IP, bitmap *[256]*ipv4LowBitmap, ipv4Set map[string]struct{}, ipv4Addresses *[]string) {
-	if ipv4 := ip.To4(); ipv4 != nil {
-		high := uint16(ipv4[0])
-		low := (uint16(ipv4[1]) << 8) | (uint16(ipv4[2]) << 4) | uint16(ipv4[3])
+func (m *localIPManager) setBitInBitmap(ip netip.Addr, bitmap *[256]*ipv4LowBitmap, ipv4Set map[netip.Addr]struct{}, ipv4Addresses *[]netip.Addr) {
+	if !ip.Is4() {
+		return
+	}
+	ipv4 := ip.AsSlice()
 
-		if bitmap[high] == nil {
-			bitmap[high] = &ipv4LowBitmap{}
-		}
+	high := uint16(ipv4[0])
+	low := (uint16(ipv4[1]) << 8) | (uint16(ipv4[2]) << 4) | uint16(ipv4[3])
 
-		index := low / 32
-		bit := low % 32
-		bitmap[high].bitmap[index] |= 1 << bit
+	if bitmap[high] == nil {
+		bitmap[high] = &ipv4LowBitmap{}
+	}
 
-		ipStr := ipv4.String()
-		if _, exists := ipv4Set[ipStr]; !exists {
-			ipv4Set[ipStr] = struct{}{}
-			*ipv4Addresses = append(*ipv4Addresses, ipStr)
-		}
+	index := low / 32
+	bit := low % 32
+	bitmap[high].bitmap[index] |= 1 << bit
+
+	if _, exists := ipv4Set[ip]; !exists {
+		ipv4Set[ip] = struct{}{}
+		*ipv4Addresses = append(*ipv4Addresses, ip)
 	}
 }
 
@@ -79,12 +81,12 @@ func (m *localIPManager) checkBitmapBit(ip []byte) bool {
 	return (m.ipv4Bitmap[high].bitmap[index] & (1 << bit)) != 0
 }
 
-func (m *localIPManager) processIP(ip net.IP, bitmap *[256]*ipv4LowBitmap, ipv4Set map[string]struct{}, ipv4Addresses *[]string) error {
+func (m *localIPManager) processIP(ip netip.Addr, bitmap *[256]*ipv4LowBitmap, ipv4Set map[netip.Addr]struct{}, ipv4Addresses *[]netip.Addr) error {
 	m.setBitInBitmap(ip, bitmap, ipv4Set, ipv4Addresses)
 	return nil
 }
 
-func (m *localIPManager) processInterface(iface net.Interface, bitmap *[256]*ipv4LowBitmap, ipv4Set map[string]struct{}, ipv4Addresses *[]string) {
+func (m *localIPManager) processInterface(iface net.Interface, bitmap *[256]*ipv4LowBitmap, ipv4Set map[netip.Addr]struct{}, ipv4Addresses *[]netip.Addr) {
 	addrs, err := iface.Addrs()
 	if err != nil {
 		log.Debugf("get addresses for interface %s failed: %v", iface.Name, err)
@@ -102,7 +104,13 @@ func (m *localIPManager) processInterface(iface net.Interface, bitmap *[256]*ipv
 			continue
 		}
 
-		if err := m.processIP(ip, bitmap, ipv4Set, ipv4Addresses); err != nil {
+		addr, ok := netip.AddrFromSlice(ip)
+		if !ok {
+			log.Warnf("invalid IP address %s in interface %s", ip.String(), iface.Name)
+			continue
+		}
+
+		if err := m.processIP(addr.Unmap(), bitmap, ipv4Set, ipv4Addresses); err != nil {
 			log.Debugf("process IP failed: %v", err)
 		}
 	}
@@ -116,8 +124,8 @@ func (m *localIPManager) UpdateLocalIPs(iface common.IFaceMapper) (err error) {
 	}()
 
 	var newIPv4Bitmap [256]*ipv4LowBitmap
-	ipv4Set := make(map[string]struct{})
-	var ipv4Addresses []string
+	ipv4Set := make(map[netip.Addr]struct{})
+	var ipv4Addresses []netip.Addr
 
 	// 127.0.0.0/8
 	newIPv4Bitmap[127] = &ipv4LowBitmap{}

client/firewall/uspfilter/localip_test.go

@@ -20,11 +20,8 @@ func TestLocalIPManager(t *testing.T) {
 		{
 			name: "Localhost range",
 			setupAddr: wgaddr.Address{
-				IP: net.ParseIP("192.168.1.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("192.168.1.0"),
-					Mask: net.CIDRMask(24, 32),
-				},
+				IP:      netip.MustParseAddr("192.168.1.1"),
+				Network: netip.MustParsePrefix("192.168.1.0/24"),
 			},
 			testIP:   netip.MustParseAddr("127.0.0.2"),
 			expected: true,
@@ -32,11 +29,8 @@ func TestLocalIPManager(t *testing.T) {
 		{
 			name: "Localhost standard address",
 			setupAddr: wgaddr.Address{
-				IP: net.ParseIP("192.168.1.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("192.168.1.0"),
-					Mask: net.CIDRMask(24, 32),
-				},
+				IP:      netip.MustParseAddr("192.168.1.1"),
+				Network: netip.MustParsePrefix("192.168.1.0/24"),
 			},
 			testIP:   netip.MustParseAddr("127.0.0.1"),
 			expected: true,
@@ -44,11 +38,8 @@ func TestLocalIPManager(t *testing.T) {
 		{
 			name: "Localhost range edge",
 			setupAddr: wgaddr.Address{
-				IP: net.ParseIP("192.168.1.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("192.168.1.0"),
-					Mask: net.CIDRMask(24, 32),
-				},
+				IP:      netip.MustParseAddr("192.168.1.1"),
+				Network: netip.MustParsePrefix("192.168.1.0/24"),
 			},
 			testIP:   netip.MustParseAddr("127.255.255.255"),
 			expected: true,
@@ -56,11 +47,8 @@ func TestLocalIPManager(t *testing.T) {
 		{
 			name: "Local IP matches",
 			setupAddr: wgaddr.Address{
-				IP: net.ParseIP("192.168.1.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("192.168.1.0"),
-					Mask: net.CIDRMask(24, 32),
-				},
+				IP:      netip.MustParseAddr("192.168.1.1"),
+				Network: netip.MustParsePrefix("192.168.1.0/24"),
 			},
 			testIP:   netip.MustParseAddr("192.168.1.1"),
 			expected: true,
@@ -68,11 +56,8 @@ func TestLocalIPManager(t *testing.T) {
 		{
 			name: "Local IP doesn't match",
 			setupAddr: wgaddr.Address{
-				IP: net.ParseIP("192.168.1.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("192.168.1.0"),
-					Mask: net.CIDRMask(24, 32),
-				},
+				IP:      netip.MustParseAddr("192.168.1.1"),
+				Network: netip.MustParsePrefix("192.168.1.0/24"),
 			},
 			testIP:   netip.MustParseAddr("192.168.1.2"),
 			expected: false,
@@ -80,11 +65,8 @@ func TestLocalIPManager(t *testing.T) {
 		{
 			name: "Local IP doesn't match - addresses 32 apart",
 			setupAddr: wgaddr.Address{
-				IP: net.ParseIP("192.168.1.1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("192.168.1.0"),
-					Mask: net.CIDRMask(24, 32),
-				},
+				IP:      netip.MustParseAddr("192.168.1.1"),
+				Network: netip.MustParsePrefix("192.168.1.0/24"),
 			},
 			testIP:   netip.MustParseAddr("192.168.1.33"),
 			expected: false,
@@ -92,11 +74,8 @@ func TestLocalIPManager(t *testing.T) {
 		{
 			name: "IPv6 address",
 			setupAddr: wgaddr.Address{
-				IP: net.ParseIP("fe80::1"),
-				Network: &net.IPNet{
-					IP:   net.ParseIP("fe80::"),
-					Mask: net.CIDRMask(64, 128),
-				},
+				IP:      netip.MustParseAddr("fe80::1"),
+				Network: netip.MustParsePrefix("192.168.1.0/24"),
 			},
 			testIP:   netip.MustParseAddr("fe80::1"),
 			expected: false,

client/firewall/uspfilter/nat.go

@@ -0,0 +1,408 @@
+package uspfilter
+
+import (
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"net/netip"
+
+	"github.com/google/gopacket/layers"
+
+	firewall "github.com/netbirdio/netbird/client/firewall/manager"
+)
+
+var ErrIPv4Only = errors.New("only IPv4 is supported for DNAT")
+
+func ipv4Checksum(header []byte) uint16 {
+	if len(header) < 20 {
+		return 0
+	}
+
+	var sum1, sum2 uint32
+
+	// Parallel processing - unroll and compute two sums simultaneously
+	sum1 += uint32(binary.BigEndian.Uint16(header[0:2]))
+	sum2 += uint32(binary.BigEndian.Uint16(header[2:4]))
+	sum1 += uint32(binary.BigEndian.Uint16(header[4:6]))
+	sum2 += uint32(binary.BigEndian.Uint16(header[6:8]))
+	sum1 += uint32(binary.BigEndian.Uint16(header[8:10]))
+	// Skip checksum field at [10:12]
+	sum2 += uint32(binary.BigEndian.Uint16(header[12:14]))
+	sum1 += uint32(binary.BigEndian.Uint16(header[14:16]))
+	sum2 += uint32(binary.BigEndian.Uint16(header[16:18]))
+	sum1 += uint32(binary.BigEndian.Uint16(header[18:20]))
+
+	sum := sum1 + sum2
+
+	// Handle remaining bytes for headers > 20 bytes
+	for i := 20; i < len(header)-1; i += 2 {
+		sum += uint32(binary.BigEndian.Uint16(header[i : i+2]))
+	}
+
+	if len(header)%2 == 1 {
+		sum += uint32(header[len(header)-1]) << 8
+	}
+
+	// Optimized carry fold - single iteration handles most cases
+	sum = (sum & 0xFFFF) + (sum >> 16)
+	if sum > 0xFFFF {
+		sum++
+	}
+
+	return ^uint16(sum)
+}
+
+func icmpChecksum(data []byte) uint16 {
+	var sum1, sum2, sum3, sum4 uint32
+	i := 0
+
+	// Process 16 bytes at once with 4 parallel accumulators
+	for i <= len(data)-16 {
+		sum1 += uint32(binary.BigEndian.Uint16(data[i : i+2]))
+		sum2 += uint32(binary.BigEndian.Uint16(data[i+2 : i+4]))
+		sum3 += uint32(binary.BigEndian.Uint16(data[i+4 : i+6]))
+		sum4 += uint32(binary.BigEndian.Uint16(data[i+6 : i+8]))
+		sum1 += uint32(binary.BigEndian.Uint16(data[i+8 : i+10]))
+		sum2 += uint32(binary.BigEndian.Uint16(data[i+10 : i+12]))
+		sum3 += uint32(binary.BigEndian.Uint16(data[i+12 : i+14]))
+		sum4 += uint32(binary.BigEndian.Uint16(data[i+14 : i+16]))
+		i += 16
+	}
+
+	sum := sum1 + sum2 + sum3 + sum4
+
+	// Handle remaining bytes
+	for i < len(data)-1 {
+		sum += uint32(binary.BigEndian.Uint16(data[i : i+2]))
+		i += 2
+	}
+
+	if len(data)%2 == 1 {
+		sum += uint32(data[len(data)-1]) << 8
+	}
+
+	sum = (sum & 0xFFFF) + (sum >> 16)
+	if sum > 0xFFFF {
+		sum++
+	}
+
+	return ^uint16(sum)
+}
+
+type biDNATMap struct {
+	forward map[netip.Addr]netip.Addr
+	reverse map[netip.Addr]netip.Addr
+}
+
+func newBiDNATMap() *biDNATMap {
+	return &biDNATMap{
+		forward: make(map[netip.Addr]netip.Addr),
+		reverse: make(map[netip.Addr]netip.Addr),
+	}
+}
+
+func (b *biDNATMap) set(original, translated netip.Addr) {
+	b.forward[original] = translated
+	b.reverse[translated] = original
+}
+
+func (b *biDNATMap) delete(original netip.Addr) {
+	if translated, exists := b.forward[original]; exists {
+		delete(b.forward, original)
+		delete(b.reverse, translated)
+	}
+}
+
+func (b *biDNATMap) getTranslated(original netip.Addr) (netip.Addr, bool) {
+	translated, exists := b.forward[original]
+	return translated, exists
+}
+
+func (b *biDNATMap) getOriginal(translated netip.Addr) (netip.Addr, bool) {
+	original, exists := b.reverse[translated]
+	return original, exists
+}
+
+func (m *Manager) AddInternalDNATMapping(originalAddr, translatedAddr netip.Addr) error {
+	if !originalAddr.IsValid() || !translatedAddr.IsValid() {
+		return fmt.Errorf("invalid IP addresses")
+	}
+
+	if m.localipmanager.IsLocalIP(translatedAddr) {
+		return fmt.Errorf("cannot map to local IP: %s", translatedAddr)
+	}
+
+	m.dnatMutex.Lock()
+	defer m.dnatMutex.Unlock()
+
+	// Initialize both maps together if either is nil
+	if m.dnatMappings == nil || m.dnatBiMap == nil {
+		m.dnatMappings = make(map[netip.Addr]netip.Addr)
+		m.dnatBiMap = newBiDNATMap()
+	}
+
+	m.dnatMappings[originalAddr] = translatedAddr
+	m.dnatBiMap.set(originalAddr, translatedAddr)
+
+	if len(m.dnatMappings) == 1 {
+		m.dnatEnabled.Store(true)
+	}
+
+	return nil
+}
+
+// RemoveInternalDNATMapping removes a 1:1 IP address mapping
+func (m *Manager) RemoveInternalDNATMapping(originalAddr netip.Addr) error {
+	m.dnatMutex.Lock()
+	defer m.dnatMutex.Unlock()
+
+	if _, exists := m.dnatMappings[originalAddr]; !exists {
+		return fmt.Errorf("mapping not found for: %s", originalAddr)
+	}
+
+	delete(m.dnatMappings, originalAddr)
+	m.dnatBiMap.delete(originalAddr)
+	if len(m.dnatMappings) == 0 {
+		m.dnatEnabled.Store(false)
+	}
+
+	return nil
+}
+
+// getDNATTranslation returns the translated address if a mapping exists
+func (m *Manager) getDNATTranslation(addr netip.Addr) (netip.Addr, bool) {
+	if !m.dnatEnabled.Load() {
+		return addr, false
+	}
+
+	m.dnatMutex.RLock()
+	translated, exists := m.dnatBiMap.getTranslated(addr)
+	m.dnatMutex.RUnlock()
+	return translated, exists
+}
+
+// findReverseDNATMapping finds original address for return traffic
+func (m *Manager) findReverseDNATMapping(translatedAddr netip.Addr) (netip.Addr, bool) {
+	if !m.dnatEnabled.Load() {
+		return translatedAddr, false
+	}
+
+	m.dnatMutex.RLock()
+	original, exists := m.dnatBiMap.getOriginal(translatedAddr)
+	m.dnatMutex.RUnlock()
+	return original, exists
+}
+
+// translateOutboundDNAT applies DNAT translation to outbound packets
+func (m *Manager) translateOutboundDNAT(packetData []byte, d *decoder) bool {
+	if !m.dnatEnabled.Load() {
+		return false
+	}
+
+	if len(packetData) < 20 || d.decoded[0] != layers.LayerTypeIPv4 {
+		return false
+	}
+
+	dstIP := netip.AddrFrom4([4]byte{packetData[16], packetData[17], packetData[18], packetData[19]})
+
+	translatedIP, exists := m.getDNATTranslation(dstIP)
+	if !exists {
+		return false
+	}
+
+	if err := m.rewritePacketDestination(packetData, d, translatedIP); err != nil {
+		m.logger.Error("Failed to rewrite packet destination: %v", err)
+		return false
+	}
+
+	m.logger.Trace("DNAT: %s -> %s", dstIP, translatedIP)
+	return true
+}
+
+// translateInboundReverse applies reverse DNAT to inbound return traffic
+func (m *Manager) translateInboundReverse(packetData []byte, d *decoder) bool {
+	if !m.dnatEnabled.Load() {
+		return false
+	}
+
+	if len(packetData) < 20 || d.decoded[0] != layers.LayerTypeIPv4 {
+		return false
+	}
+
+	srcIP := netip.AddrFrom4([4]byte{packetData[12], packetData[13], packetData[14], packetData[15]})
+
+	originalIP, exists := m.findReverseDNATMapping(srcIP)
+	if !exists {
+		return false
+	}
+
+	if err := m.rewritePacketSource(packetData, d, originalIP); err != nil {
+		m.logger.Error("Failed to rewrite packet source: %v", err)
+		return false
+	}
+
+	m.logger.Trace("Reverse DNAT: %s -> %s", srcIP, originalIP)
+	return true
+}
+
+// rewritePacketDestination replaces destination IP in the packet
+func (m *Manager) rewritePacketDestination(packetData []byte, d *decoder, newIP netip.Addr) error {
+	if len(packetData) < 20 || d.decoded[0] != layers.LayerTypeIPv4 || !newIP.Is4() {
+		return ErrIPv4Only
+	}
+
+	var oldDst [4]byte
+	copy(oldDst[:], packetData[16:20])
+	newDst := newIP.As4()
+
+	copy(packetData[16:20], newDst[:])
+
+	ipHeaderLen := int(d.ip4.IHL) * 4
+	if ipHeaderLen < 20 || ipHeaderLen > len(packetData) {
+		return fmt.Errorf("invalid IP header length")
+	}
+
+	binary.BigEndian.PutUint16(packetData[10:12], 0)
+	ipChecksum := ipv4Checksum(packetData[:ipHeaderLen])
+	binary.BigEndian.PutUint16(packetData[10:12], ipChecksum)
+
+	if len(d.decoded) > 1 {
+		switch d.decoded[1] {
+		case layers.LayerTypeTCP:
+			m.updateTCPChecksum(packetData, ipHeaderLen, oldDst[:], newDst[:])
+		case layers.LayerTypeUDP:
+			m.updateUDPChecksum(packetData, ipHeaderLen, oldDst[:], newDst[:])
+		case layers.LayerTypeICMPv4:
+			m.updateICMPChecksum(packetData, ipHeaderLen)
+		}
+	}
+
+	return nil
+}
+
+// rewritePacketSource replaces the source IP address in the packet
+func (m *Manager) rewritePacketSource(packetData []byte, d *decoder, newIP netip.Addr) error {
+	if len(packetData) < 20 || d.decoded[0] != layers.LayerTypeIPv4 || !newIP.Is4() {
+		return ErrIPv4Only
+	}
+
+	var oldSrc [4]byte
+	copy(oldSrc[:], packetData[12:16])
+	newSrc := newIP.As4()
+
+	copy(packetData[12:16], newSrc[:])
+
+	ipHeaderLen := int(d.ip4.IHL) * 4
+	if ipHeaderLen < 20 || ipHeaderLen > len(packetData) {
+		return fmt.Errorf("invalid IP header length")
+	}
+
+	binary.BigEndian.PutUint16(packetData[10:12], 0)
+	ipChecksum := ipv4Checksum(packetData[:ipHeaderLen])
+	binary.BigEndian.PutUint16(packetData[10:12], ipChecksum)
+
+	if len(d.decoded) > 1 {
+		switch d.decoded[1] {
+		case layers.LayerTypeTCP:
+			m.updateTCPChecksum(packetData, ipHeaderLen, oldSrc[:], newSrc[:])
+		case layers.LayerTypeUDP:
+			m.updateUDPChecksum(packetData, ipHeaderLen, oldSrc[:], newSrc[:])
+		case layers.LayerTypeICMPv4:
+			m.updateICMPChecksum(packetData, ipHeaderLen)
+		}
+	}
+
+	return nil
+}
+
+func (m *Manager) updateTCPChecksum(packetData []byte, ipHeaderLen int, oldIP, newIP []byte) {
+	tcpStart := ipHeaderLen
+	if len(packetData) < tcpStart+18 {
+		return
+	}
+
+	checksumOffset := tcpStart + 16
+	oldChecksum := binary.BigEndian.Uint16(packetData[checksumOffset : checksumOffset+2])
+	newChecksum := incrementalUpdate(oldChecksum, oldIP, newIP)
+	binary.BigEndian.PutUint16(packetData[checksumOffset:checksumOffset+2], newChecksum)
+}
+
+func (m *Manager) updateUDPChecksum(packetData []byte, ipHeaderLen int, oldIP, newIP []byte) {
+	udpStart := ipHeaderLen
+	if len(packetData) < udpStart+8 {
+		return
+	}
+
+	checksumOffset := udpStart + 6
+	oldChecksum := binary.BigEndian.Uint16(packetData[checksumOffset : checksumOffset+2])
+
+	if oldChecksum == 0 {
+		return
+	}
+
+	newChecksum := incrementalUpdate(oldChecksum, oldIP, newIP)
+	binary.BigEndian.PutUint16(packetData[checksumOffset:checksumOffset+2], newChecksum)
+}
+
+func (m *Manager) updateICMPChecksum(packetData []byte, ipHeaderLen int) {
+	icmpStart := ipHeaderLen
+	if len(packetData) < icmpStart+8 {
+		return
+	}
+
+	icmpData := packetData[icmpStart:]
+	binary.BigEndian.PutUint16(icmpData[2:4], 0)
+	checksum := icmpChecksum(icmpData)
+	binary.BigEndian.PutUint16(icmpData[2:4], checksum)
+}
+
+// incrementalUpdate performs incremental checksum update per RFC 1624
+func incrementalUpdate(oldChecksum uint16, oldBytes, newBytes []byte) uint16 {
+	sum := uint32(^oldChecksum)
+
+	// Fast path for IPv4 addresses (4 bytes) - most common case
+	if len(oldBytes) == 4 && len(newBytes) == 4 {
+		sum += uint32(^binary.BigEndian.Uint16(oldBytes[0:2]))
+		sum += uint32(^binary.BigEndian.Uint16(oldBytes[2:4]))
+		sum += uint32(binary.BigEndian.Uint16(newBytes[0:2]))
+		sum += uint32(binary.BigEndian.Uint16(newBytes[2:4]))
+	} else {
+		// Fallback for other lengths
+		for i := 0; i < len(oldBytes)-1; i += 2 {
+			sum += uint32(^binary.BigEndian.Uint16(oldBytes[i : i+2]))
+		}
+		if len(oldBytes)%2 == 1 {
+			sum += uint32(^oldBytes[len(oldBytes)-1]) << 8
+		}
+
+		for i := 0; i < len(newBytes)-1; i += 2 {
+			sum += uint32(binary.BigEndian.Uint16(newBytes[i : i+2]))
+		}
+		if len(newBytes)%2 == 1 {
+			sum += uint32(newBytes[len(newBytes)-1]) << 8
+		}
+	}
+
+	sum = (sum & 0xFFFF) + (sum >> 16)
+	if sum > 0xFFFF {
+		sum++
+	}
+
+	return ^uint16(sum)
+}
+
+// AddDNATRule adds a DNAT rule (delegates to native firewall for port forwarding)
+func (m *Manager) AddDNATRule(rule firewall.ForwardRule) (firewall.Rule, error) {
+	if m.nativeFirewall == nil {
+		return nil, errNatNotSupported
+	}
+	return m.nativeFirewall.AddDNATRule(rule)
+}
+
+// DeleteDNATRule deletes a DNAT rule (delegates to native firewall)
+func (m *Manager) DeleteDNATRule(rule firewall.Rule) error {
+	if m.nativeFirewall == nil {
+		return errNatNotSupported
+	}
+	return m.nativeFirewall.DeleteDNATRule(rule)
+}

client/firewall/uspfilter/nat_bench_test.go

@@ -0,0 +1,416 @@
+package uspfilter
+
+import (
+	"fmt"
+	"net/netip"
+	"testing"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/iface/device"
+)
+
+// BenchmarkDNATTranslation measures the performance of DNAT operations
+func BenchmarkDNATTranslation(b *testing.B) {
+	scenarios := []struct {
+		name        string
+		proto       layers.IPProtocol
+		setupDNAT   bool
+		description string
+	}{
+		{
+			name:        "tcp_with_dnat",
+			proto:       layers.IPProtocolTCP,
+			setupDNAT:   true,
+			description: "TCP packet with DNAT translation enabled",
+		},
+		{
+			name:        "tcp_without_dnat",
+			proto:       layers.IPProtocolTCP,
+			setupDNAT:   false,
+			description: "TCP packet without DNAT (baseline)",
+		},
+		{
+			name:        "udp_with_dnat",
+			proto:       layers.IPProtocolUDP,
+			setupDNAT:   true,
+			description: "UDP packet with DNAT translation enabled",
+		},
+		{
+			name:        "udp_without_dnat",
+			proto:       layers.IPProtocolUDP,
+			setupDNAT:   false,
+			description: "UDP packet without DNAT (baseline)",
+		},
+		{
+			name:        "icmp_with_dnat",
+			proto:       layers.IPProtocolICMPv4,
+			setupDNAT:   true,
+			description: "ICMP packet with DNAT translation enabled",
+		},
+		{
+			name:        "icmp_without_dnat",
+			proto:       layers.IPProtocolICMPv4,
+			setupDNAT:   false,
+			description: "ICMP packet without DNAT (baseline)",
+		},
+	}
+
+	for _, sc := range scenarios {
+		b.Run(sc.name, func(b *testing.B) {
+			manager, err := Create(&IFaceMock{
+				SetFilterFunc: func(device.PacketFilter) error { return nil },
+			}, false, flowLogger)
+			require.NoError(b, err)
+			defer func() {
+				require.NoError(b, manager.Close(nil))
+			}()
+
+			// Set logger to error level to reduce noise during benchmarking
+			manager.SetLogLevel(log.ErrorLevel)
+			defer func() {
+				// Restore to info level after benchmark
+				manager.SetLogLevel(log.InfoLevel)
+			}()
+
+			// Setup DNAT mapping if needed
+			originalIP := netip.MustParseAddr("192.168.1.100")
+			translatedIP := netip.MustParseAddr("10.0.0.100")
+
+			if sc.setupDNAT {
+				err := manager.AddInternalDNATMapping(originalIP, translatedIP)
+				require.NoError(b, err)
+			}
+
+			// Create test packets
+			srcIP := netip.MustParseAddr("172.16.0.1")
+			outboundPacket := generateDNATTestPacket(b, srcIP, originalIP, sc.proto, 12345, 80)
+
+			// Pre-establish connection for reverse DNAT test
+			if sc.setupDNAT {
+				manager.filterOutbound(outboundPacket, 0)
+			}
+
+			b.ResetTimer()
+
+			// Benchmark outbound DNAT translation
+			b.Run("outbound", func(b *testing.B) {
+				for i := 0; i < b.N; i++ {
+					// Create fresh packet each time since translation modifies it
+					packet := generateDNATTestPacket(b, srcIP, originalIP, sc.proto, 12345, 80)
+					manager.filterOutbound(packet, 0)
+				}
+			})
+
+			// Benchmark inbound reverse DNAT translation
+			if sc.setupDNAT {
+				b.Run("inbound_reverse", func(b *testing.B) {
+					for i := 0; i < b.N; i++ {
+						// Create fresh packet each time since translation modifies it
+						packet := generateDNATTestPacket(b, translatedIP, srcIP, sc.proto, 80, 12345)
+						manager.filterInbound(packet, 0)
+					}
+				})
+			}
+		})
+	}
+}
+
+// BenchmarkDNATConcurrency tests DNAT performance under concurrent load
+func BenchmarkDNATConcurrency(b *testing.B) {
+	manager, err := Create(&IFaceMock{
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
+	}, false, flowLogger)
+	require.NoError(b, err)
+	defer func() {
+		require.NoError(b, manager.Close(nil))
+	}()
+
+	// Set logger to error level to reduce noise during benchmarking
+	manager.SetLogLevel(log.ErrorLevel)
+	defer func() {
+		// Restore to info level after benchmark
+		manager.SetLogLevel(log.InfoLevel)
+	}()
+
+	// Setup multiple DNAT mappings
+	numMappings := 100
+	originalIPs := make([]netip.Addr, numMappings)
+	translatedIPs := make([]netip.Addr, numMappings)
+
+	for i := 0; i < numMappings; i++ {
+		originalIPs[i] = netip.MustParseAddr(fmt.Sprintf("192.168.%d.%d", (i/254)+1, (i%254)+1))
+		translatedIPs[i] = netip.MustParseAddr(fmt.Sprintf("10.0.%d.%d", (i/254)+1, (i%254)+1))
+		err := manager.AddInternalDNATMapping(originalIPs[i], translatedIPs[i])
+		require.NoError(b, err)
+	}
+
+	srcIP := netip.MustParseAddr("172.16.0.1")
+
+	// Pre-generate packets
+	outboundPackets := make([][]byte, numMappings)
+	inboundPackets := make([][]byte, numMappings)
+	for i := 0; i < numMappings; i++ {
+		outboundPackets[i] = generateDNATTestPacket(b, srcIP, originalIPs[i], layers.IPProtocolTCP, 12345, 80)
+		inboundPackets[i] = generateDNATTestPacket(b, translatedIPs[i], srcIP, layers.IPProtocolTCP, 80, 12345)
+		// Establish connections
+		manager.filterOutbound(outboundPackets[i], 0)
+	}
+
+	b.ResetTimer()
+
+	b.Run("concurrent_outbound", func(b *testing.B) {
+		b.RunParallel(func(pb *testing.PB) {
+			i := 0
+			for pb.Next() {
+				idx := i % numMappings
+				packet := generateDNATTestPacket(b, srcIP, originalIPs[idx], layers.IPProtocolTCP, 12345, 80)
+				manager.filterOutbound(packet, 0)
+				i++
+			}
+		})
+	})
+
+	b.Run("concurrent_inbound", func(b *testing.B) {
+		b.RunParallel(func(pb *testing.PB) {
+			i := 0
+			for pb.Next() {
+				idx := i % numMappings
+				packet := generateDNATTestPacket(b, translatedIPs[idx], srcIP, layers.IPProtocolTCP, 80, 12345)
+				manager.filterInbound(packet, 0)
+				i++
+			}
+		})
+	})
+}
+
+// BenchmarkDNATScaling tests how DNAT performance scales with number of mappings
+func BenchmarkDNATScaling(b *testing.B) {
+	mappingCounts := []int{1, 10, 100, 1000}
+
+	for _, count := range mappingCounts {
+		b.Run(fmt.Sprintf("mappings_%d", count), func(b *testing.B) {
+			manager, err := Create(&IFaceMock{
+				SetFilterFunc: func(device.PacketFilter) error { return nil },
+			}, false, flowLogger)
+			require.NoError(b, err)
+			defer func() {
+				require.NoError(b, manager.Close(nil))
+			}()
+
+			// Set logger to error level to reduce noise during benchmarking
+			manager.SetLogLevel(log.ErrorLevel)
+			defer func() {
+				// Restore to info level after benchmark
+				manager.SetLogLevel(log.InfoLevel)
+			}()
+
+			// Setup DNAT mappings
+			for i := 0; i < count; i++ {
+				originalIP := netip.MustParseAddr(fmt.Sprintf("192.168.%d.%d", (i/254)+1, (i%254)+1))
+				translatedIP := netip.MustParseAddr(fmt.Sprintf("10.0.%d.%d", (i/254)+1, (i%254)+1))
+				err := manager.AddInternalDNATMapping(originalIP, translatedIP)
+				require.NoError(b, err)
+			}
+
+			// Test with the last mapping added (worst case for lookup)
+			srcIP := netip.MustParseAddr("172.16.0.1")
+			lastOriginal := netip.MustParseAddr(fmt.Sprintf("192.168.%d.%d", ((count-1)/254)+1, ((count-1)%254)+1))
+
+			b.ResetTimer()
+			for i := 0; i < b.N; i++ {
+				packet := generateDNATTestPacket(b, srcIP, lastOriginal, layers.IPProtocolTCP, 12345, 80)
+				manager.filterOutbound(packet, 0)
+			}
+		})
+	}
+}
+
+// generateDNATTestPacket creates a test packet for DNAT benchmarking
+func generateDNATTestPacket(tb testing.TB, srcIP, dstIP netip.Addr, proto layers.IPProtocol, srcPort, dstPort uint16) []byte {
+	tb.Helper()
+
+	ipv4 := &layers.IPv4{
+		TTL:      64,
+		Version:  4,
+		SrcIP:    srcIP.AsSlice(),
+		DstIP:    dstIP.AsSlice(),
+		Protocol: proto,
+	}
+
+	var transportLayer gopacket.SerializableLayer
+	switch proto {
+	case layers.IPProtocolTCP:
+		tcp := &layers.TCP{
+			SrcPort: layers.TCPPort(srcPort),
+			DstPort: layers.TCPPort(dstPort),
+			SYN:     true,
+		}
+		require.NoError(tb, tcp.SetNetworkLayerForChecksum(ipv4))
+		transportLayer = tcp
+	case layers.IPProtocolUDP:
+		udp := &layers.UDP{
+			SrcPort: layers.UDPPort(srcPort),
+			DstPort: layers.UDPPort(dstPort),
+		}
+		require.NoError(tb, udp.SetNetworkLayerForChecksum(ipv4))
+		transportLayer = udp
+	case layers.IPProtocolICMPv4:
+		icmp := &layers.ICMPv4{
+			TypeCode: layers.CreateICMPv4TypeCode(layers.ICMPv4TypeEchoRequest, 0),
+		}
+		transportLayer = icmp
+	}
+
+	buf := gopacket.NewSerializeBuffer()
+	opts := gopacket.SerializeOptions{ComputeChecksums: true, FixLengths: true}
+	err := gopacket.SerializeLayers(buf, opts, ipv4, transportLayer, gopacket.Payload("test"))
+	require.NoError(tb, err)
+	return buf.Bytes()
+}
+
+// BenchmarkChecksumUpdate specifically benchmarks checksum calculation performance
+func BenchmarkChecksumUpdate(b *testing.B) {
+	// Create test data for checksum calculations
+	testData := make([]byte, 64) // Typical packet size for checksum testing
+	for i := range testData {
+		testData[i] = byte(i)
+	}
+
+	b.Run("ipv4_checksum", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_ = ipv4Checksum(testData[:20]) // IPv4 header is typically 20 bytes
+		}
+	})
+
+	b.Run("icmp_checksum", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_ = icmpChecksum(testData)
+		}
+	})
+
+	b.Run("incremental_update", func(b *testing.B) {
+		oldBytes := []byte{192, 168, 1, 100}
+		newBytes := []byte{10, 0, 0, 100}
+		oldChecksum := uint16(0x1234)
+
+		for i := 0; i < b.N; i++ {
+			_ = incrementalUpdate(oldChecksum, oldBytes, newBytes)
+		}
+	})
+}
+
+// BenchmarkDNATMemoryAllocations checks for memory allocations in DNAT operations
+func BenchmarkDNATMemoryAllocations(b *testing.B) {
+	manager, err := Create(&IFaceMock{
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
+	}, false, flowLogger)
+	require.NoError(b, err)
+	defer func() {
+		require.NoError(b, manager.Close(nil))
+	}()
+
+	// Set logger to error level to reduce noise during benchmarking
+	manager.SetLogLevel(log.ErrorLevel)
+	defer func() {
+		// Restore to info level after benchmark
+		manager.SetLogLevel(log.InfoLevel)
+	}()
+
+	originalIP := netip.MustParseAddr("192.168.1.100")
+	translatedIP := netip.MustParseAddr("10.0.0.100")
+	srcIP := netip.MustParseAddr("172.16.0.1")
+
+	err = manager.AddInternalDNATMapping(originalIP, translatedIP)
+	require.NoError(b, err)
+
+	packet := generateDNATTestPacket(b, srcIP, originalIP, layers.IPProtocolTCP, 12345, 80)
+
+	b.ResetTimer()
+	b.ReportAllocs()
+
+	for i := 0; i < b.N; i++ {
+		// Create fresh packet each time to isolate allocation testing
+		testPacket := make([]byte, len(packet))
+		copy(testPacket, packet)
+
+		// Parse the packet fresh each time to get a clean decoder
+		d := &decoder{decoded: []gopacket.LayerType{}}
+		d.parser = gopacket.NewDecodingLayerParser(
+			layers.LayerTypeIPv4,
+			&d.eth, &d.ip4, &d.ip6, &d.icmp4, &d.icmp6, &d.tcp, &d.udp,
+		)
+		d.parser.IgnoreUnsupported = true
+		err = d.parser.DecodeLayers(testPacket, &d.decoded)
+		assert.NoError(b, err)
+
+		manager.translateOutboundDNAT(testPacket, d)
+	}
+}
+
+// BenchmarkDirectIPExtraction tests the performance improvement of direct IP extraction
+func BenchmarkDirectIPExtraction(b *testing.B) {
+	// Create a test packet
+	srcIP := netip.MustParseAddr("172.16.0.1")
+	dstIP := netip.MustParseAddr("192.168.1.100")
+	packet := generateDNATTestPacket(b, srcIP, dstIP, layers.IPProtocolTCP, 12345, 80)
+
+	b.Run("direct_byte_access", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			// Direct extraction from packet bytes
+			_ = netip.AddrFrom4([4]byte{packet[16], packet[17], packet[18], packet[19]})
+		}
+	})
+
+	b.Run("decoder_extraction", func(b *testing.B) {
+		// Create decoder once for comparison
+		d := &decoder{decoded: []gopacket.LayerType{}}
+		d.parser = gopacket.NewDecodingLayerParser(
+			layers.LayerTypeIPv4,
+			&d.eth, &d.ip4, &d.ip6, &d.icmp4, &d.icmp6, &d.tcp, &d.udp,
+		)
+		d.parser.IgnoreUnsupported = true
+		err := d.parser.DecodeLayers(packet, &d.decoded)
+		assert.NoError(b, err)
+
+		for i := 0; i < b.N; i++ {
+			// Extract using decoder (traditional method)
+			dst, _ := netip.AddrFromSlice(d.ip4.DstIP)
+			_ = dst
+		}
+	})
+}
+
+// BenchmarkChecksumOptimizations compares optimized vs standard checksum implementations
+func BenchmarkChecksumOptimizations(b *testing.B) {
+	// Create test IPv4 header (20 bytes)
+	header := make([]byte, 20)
+	for i := range header {
+		header[i] = byte(i)
+	}
+	// Clear checksum field
+	header[10] = 0
+	header[11] = 0
+
+	b.Run("optimized_ipv4_checksum", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_ = ipv4Checksum(header)
+		}
+	})
+
+	// Test incremental checksum updates
+	oldIP := []byte{192, 168, 1, 100}
+	newIP := []byte{10, 0, 0, 100}
+	oldChecksum := uint16(0x1234)
+
+	b.Run("optimized_incremental_update", func(b *testing.B) {
+		for i := 0; i < b.N; i++ {
+			_ = incrementalUpdate(oldChecksum, oldIP, newIP)
+		}
+	})
+}

client/firewall/uspfilter/nat_test.go

@@ -0,0 +1,145 @@
+package uspfilter
+
+import (
+	"net/netip"
+	"testing"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/stretchr/testify/require"
+
+	"github.com/netbirdio/netbird/client/iface/device"
+)
+
+// TestDNATTranslationCorrectness verifies DNAT translation works correctly
+func TestDNATTranslationCorrectness(t *testing.T) {
+	manager, err := Create(&IFaceMock{
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
+	}, false, flowLogger)
+	require.NoError(t, err)
+	defer func() {
+		require.NoError(t, manager.Close(nil))
+	}()
+
+	originalIP := netip.MustParseAddr("192.168.1.100")
+	translatedIP := netip.MustParseAddr("10.0.0.100")
+	srcIP := netip.MustParseAddr("172.16.0.1")
+
+	// Add DNAT mapping
+	err = manager.AddInternalDNATMapping(originalIP, translatedIP)
+	require.NoError(t, err)
+
+	testCases := []struct {
+		name     string
+		protocol layers.IPProtocol
+		srcPort  uint16
+		dstPort  uint16
+	}{
+		{"TCP", layers.IPProtocolTCP, 12345, 80},
+		{"UDP", layers.IPProtocolUDP, 12345, 53},
+		{"ICMP", layers.IPProtocolICMPv4, 0, 0},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			// Test outbound DNAT translation
+			outboundPacket := generateDNATTestPacket(t, srcIP, originalIP, tc.protocol, tc.srcPort, tc.dstPort)
+			originalOutbound := make([]byte, len(outboundPacket))
+			copy(originalOutbound, outboundPacket)
+
+			// Process outbound packet (should translate destination)
+			translated := manager.translateOutboundDNAT(outboundPacket, parsePacket(t, outboundPacket))
+			require.True(t, translated, "Outbound packet should be translated")
+
+			// Verify destination IP was changed
+			dstIPAfter := netip.AddrFrom4([4]byte{outboundPacket[16], outboundPacket[17], outboundPacket[18], outboundPacket[19]})
+			require.Equal(t, translatedIP, dstIPAfter, "Destination IP should be translated")
+
+			// Test inbound reverse DNAT translation
+			inboundPacket := generateDNATTestPacket(t, translatedIP, srcIP, tc.protocol, tc.dstPort, tc.srcPort)
+			originalInbound := make([]byte, len(inboundPacket))
+			copy(originalInbound, inboundPacket)
+
+			// Process inbound packet (should reverse translate source)
+			reversed := manager.translateInboundReverse(inboundPacket, parsePacket(t, inboundPacket))
+			require.True(t, reversed, "Inbound packet should be reverse translated")
+
+			// Verify source IP was changed back to original
+			srcIPAfter := netip.AddrFrom4([4]byte{inboundPacket[12], inboundPacket[13], inboundPacket[14], inboundPacket[15]})
+			require.Equal(t, originalIP, srcIPAfter, "Source IP should be reverse translated")
+
+			// Test that checksums are recalculated correctly
+			if tc.protocol != layers.IPProtocolICMPv4 {
+				// For TCP/UDP, verify the transport checksum was updated
+				require.NotEqual(t, originalOutbound, outboundPacket, "Outbound packet should be modified")
+				require.NotEqual(t, originalInbound, inboundPacket, "Inbound packet should be modified")
+			}
+		})
+	}
+}
+
+// parsePacket helper to create a decoder for testing
+func parsePacket(t testing.TB, packetData []byte) *decoder {
+	t.Helper()
+	d := &decoder{
+		decoded: []gopacket.LayerType{},
+	}
+	d.parser = gopacket.NewDecodingLayerParser(
+		layers.LayerTypeIPv4,
+		&d.eth, &d.ip4, &d.ip6, &d.icmp4, &d.icmp6, &d.tcp, &d.udp,
+	)
+	d.parser.IgnoreUnsupported = true
+
+	err := d.parser.DecodeLayers(packetData, &d.decoded)
+	require.NoError(t, err)
+	return d
+}
+
+// TestDNATMappingManagement tests adding/removing DNAT mappings
+func TestDNATMappingManagement(t *testing.T) {
+	manager, err := Create(&IFaceMock{
+		SetFilterFunc: func(device.PacketFilter) error { return nil },
+	}, false, flowLogger)
+	require.NoError(t, err)
+	defer func() {
+		require.NoError(t, manager.Close(nil))
+	}()
+
+	originalIP := netip.MustParseAddr("192.168.1.100")
+	translatedIP := netip.MustParseAddr("10.0.0.100")
+
+	// Test adding mapping
+	err = manager.AddInternalDNATMapping(originalIP, translatedIP)
+	require.NoError(t, err)
+
+	// Verify mapping exists
+	result, exists := manager.getDNATTranslation(originalIP)
+	require.True(t, exists)
+	require.Equal(t, translatedIP, result)
+
+	// Test reverse lookup
+	reverseResult, exists := manager.findReverseDNATMapping(translatedIP)
+	require.True(t, exists)
+	require.Equal(t, originalIP, reverseResult)
+
+	// Test removing mapping
+	err = manager.RemoveInternalDNATMapping(originalIP)
+	require.NoError(t, err)
+
+	// Verify mapping no longer exists
+	_, exists = manager.getDNATTranslation(originalIP)
+	require.False(t, exists)
+
+	_, exists = manager.findReverseDNATMapping(translatedIP)
+	require.False(t, exists)
+
+	// Test error cases
+	err = manager.AddInternalDNATMapping(netip.Addr{}, translatedIP)
+	require.Error(t, err, "Should reject invalid original IP")
+
+	err = manager.AddInternalDNATMapping(originalIP, netip.Addr{})
+	require.Error(t, err, "Should reject invalid translated IP")
+
+	err = manager.RemoveInternalDNATMapping(originalIP)
+	require.Error(t, err, "Should error when removing non-existent mapping")
+}

client/firewall/uspfilter/tracer.go

@@ -401,7 +401,7 @@ func (m *Manager) addForwardingResult(trace *PacketTrace, action, remoteAddr str
 
 func (m *Manager) traceOutbound(packetData []byte, trace *PacketTrace) *PacketTrace {
 	// will create or update the connection state
-	dropped := m.processOutgoingHooks(packetData, 0)
+	dropped := m.filterOutbound(packetData, 0)
 	if dropped {
 		trace.AddResult(StageCompleted, "Packet dropped by outgoing hook", false)
 	} else {

client/firewall/uspfilter/tracer_test.go

@@ -38,11 +38,8 @@ func TestTracePacket(t *testing.T) {
 			SetFilterFunc: func(device.PacketFilter) error { return nil },
 			AddressFunc: func() wgaddr.Address {
 				return wgaddr.Address{
-					IP: net.ParseIP("100.10.0.100"),
-					Network: &net.IPNet{
-						IP:   net.ParseIP("100.10.0.0"),
-						Mask: net.CIDRMask(16, 32),
-					},
+					IP:      netip.MustParseAddr("100.10.0.100"),
+					Network: netip.MustParsePrefix("100.10.0.0/16"),
 				}
 			},
 		}

client/iface/batcher.go

@@ -0,0 +1,338 @@
+package iface
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"net/netip"
+	"os"
+	"strconv"
+	"sync"
+	"time"
+
+	"github.com/hashicorp/go-multierror"
+	log "github.com/sirupsen/logrus"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	nberrors "github.com/netbirdio/netbird/client/errors"
+	"github.com/netbirdio/netbird/client/iface/configurer"
+	"github.com/netbirdio/netbird/client/iface/device"
+)
+
+const (
+	// DefaultBatchFlushInterval is the default maximum time to wait before flushing batched operations
+	DefaultBatchFlushInterval = 300 * time.Millisecond
+	// DefaultBatchSizeThreshold is the default number of operations to trigger an immediate flush
+	DefaultBatchSizeThreshold = 100
+
+	// AllowedIPOpAdd represents an add operation
+	AllowedIPOpAdd = "add"
+	// AllowedIPOpRemove represents a remove operation
+	AllowedIPOpRemove = "remove"
+
+	EnvDisableWGBatching      = "NB_DISABLE_WG_BATCHING"
+	EnvWGBatchFlushIntervalMS = "NB_WG_BATCH_FLUSH_INTERVAL_MS"
+	EnvWGBatchSizeThreshold   = "NB_WG_BATCH_SIZE_THRESHOLD"
+)
+
+// AllowedIPOperation represents a pending allowed IP operation
+type AllowedIPOperation struct {
+	PeerKey   string
+	Prefix    netip.Prefix
+	Operation string
+}
+
+// PeerUpdateOperation represents a pending peer update operation
+type PeerUpdateOperation struct {
+	PeerKey      string
+	AllowedIPs   []netip.Prefix
+	KeepAlive    time.Duration
+	Endpoint     *net.UDPAddr
+	PreSharedKey *wgtypes.Key
+}
+
+// WGBatcher batches WireGuard configuration updates to reduce syscall overhead
+type WGBatcher struct {
+	configurer device.WGConfigurer
+	mu         sync.Mutex
+
+	allowedIPOps []AllowedIPOperation
+	peerUpdates  map[string]*PeerUpdateOperation
+
+	flushTimer *time.Timer
+	flushChan  chan struct{}
+	ctx        context.Context
+	cancel     context.CancelFunc
+	wg         sync.WaitGroup
+
+	batchFlushInterval time.Duration
+	batchSizeThreshold int
+}
+
+// NewWGBatcher creates a new WireGuard operation batcher
+func NewWGBatcher(configurer device.WGConfigurer) *WGBatcher {
+	if os.Getenv(EnvDisableWGBatching) != "" {
+		log.Infof("WireGuard allowed IP batching disabled via %s", EnvDisableWGBatching)
+		return nil
+	}
+
+	flushInterval := DefaultBatchFlushInterval
+	sizeThreshold := DefaultBatchSizeThreshold
+
+	if intervalMs := os.Getenv(EnvWGBatchFlushIntervalMS); intervalMs != "" {
+		if ms, err := strconv.Atoi(intervalMs); err == nil && ms > 0 {
+			flushInterval = time.Duration(ms) * time.Millisecond
+			log.Infof("WireGuard batch flush interval set to %v", flushInterval)
+		}
+	}
+
+	if threshold := os.Getenv(EnvWGBatchSizeThreshold); threshold != "" {
+		if size, err := strconv.Atoi(threshold); err == nil && size > 0 {
+			sizeThreshold = size
+			log.Infof("WireGuard batch size threshold set to %d", sizeThreshold)
+		}
+	}
+
+	log.Info("WireGuard allowed IP batching enabled")
+
+	ctx, cancel := context.WithCancel(context.Background())
+	b := &WGBatcher{
+		configurer:         configurer,
+		peerUpdates:        make(map[string]*PeerUpdateOperation),
+		flushChan:          make(chan struct{}, 1),
+		ctx:                ctx,
+		cancel:             cancel,
+		batchFlushInterval: flushInterval,
+		batchSizeThreshold: sizeThreshold,
+	}
+
+	b.wg.Add(1)
+	go b.flushLoop()
+
+	return b
+}
+
+// Close stops the batcher and flushes any pending operations
+func (b *WGBatcher) Close() error {
+	b.mu.Lock()
+	if b.flushTimer != nil {
+		b.flushTimer.Stop()
+	}
+	b.mu.Unlock()
+
+	b.cancel()
+
+	if err := b.Flush(); err != nil {
+		log.Errorf("failed to flush pending operations on close: %v", err)
+	}
+
+	b.wg.Wait()
+
+	return nil
+}
+
+// UpdatePeer batches a peer update operation
+func (b *WGBatcher) UpdatePeer(peerKey string, allowedIPs []netip.Prefix, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	b.peerUpdates[peerKey] = &PeerUpdateOperation{
+		PeerKey:      peerKey,
+		AllowedIPs:   allowedIPs,
+		KeepAlive:    keepAlive,
+		Endpoint:     endpoint,
+		PreSharedKey: preSharedKey,
+	}
+
+	b.scheduleFlush()
+	return nil
+}
+
+// AddAllowedIP batches an allowed IP addition
+func (b *WGBatcher) AddAllowedIP(peerKey string, allowedIP netip.Prefix) error {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	b.allowedIPOps = append(b.allowedIPOps, AllowedIPOperation{
+		PeerKey:   peerKey,
+		Prefix:    allowedIP,
+		Operation: AllowedIPOpAdd,
+	})
+
+	b.scheduleFlush()
+	return nil
+}
+
+// RemoveAllowedIP batches an allowed IP removal
+func (b *WGBatcher) RemoveAllowedIP(peerKey string, allowedIP netip.Prefix) error {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+
+	b.allowedIPOps = append(b.allowedIPOps, AllowedIPOperation{
+		PeerKey:   peerKey,
+		Prefix:    allowedIP,
+		Operation: AllowedIPOpRemove,
+	})
+
+	b.scheduleFlush()
+	return nil
+}
+
+// Flush immediately processes all batched operations
+func (b *WGBatcher) Flush() error {
+	b.mu.Lock()
+
+	if b.flushTimer != nil {
+		b.flushTimer.Stop()
+		b.flushTimer = nil
+	}
+
+	peerUpdates := b.peerUpdates
+	allowedIPOps := b.allowedIPOps
+
+	b.peerUpdates = make(map[string]*PeerUpdateOperation)
+	b.allowedIPOps = nil
+
+	b.mu.Unlock()
+
+	return b.processBatch(peerUpdates, allowedIPOps)
+}
+
+// scheduleFlush schedules a batch flush if not already scheduled
+func (b *WGBatcher) scheduleFlush() {
+	shouldFlushNow := len(b.allowedIPOps)+len(b.peerUpdates) >= b.batchSizeThreshold
+
+	if shouldFlushNow {
+		select {
+		case b.flushChan <- struct{}{}:
+		default:
+		}
+		return
+	}
+
+	if b.flushTimer == nil {
+		b.flushTimer = time.AfterFunc(b.batchFlushInterval, func() {
+			select {
+			case b.flushChan <- struct{}{}:
+			default:
+			}
+		})
+	}
+}
+
+// flushLoop handles periodic flushing of batched operations
+func (b *WGBatcher) flushLoop() {
+	defer b.wg.Done()
+
+	for {
+		select {
+		case <-b.flushChan:
+			if err := b.Flush(); err != nil {
+				log.Errorf("Error flushing WireGuard operations: %v", err)
+			}
+		case <-b.ctx.Done():
+			return
+		}
+	}
+}
+
+// processBatch processes a batch of operations
+func (b *WGBatcher) processBatch(peerUpdates map[string]*PeerUpdateOperation, allowedIPOps []AllowedIPOperation) error {
+	if len(peerUpdates) == 0 && len(allowedIPOps) == 0 {
+		return nil
+	}
+
+	start := time.Now()
+	defer func() {
+		duration := time.Since(start)
+		log.Debugf("Processed batch of %d peer updates and %d allowed IP operations in %v",
+			len(peerUpdates), len(allowedIPOps), duration)
+	}()
+
+	var merr *multierror.Error
+
+	if err := b.processPeerUpdates(peerUpdates); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	if err := b.processAllowedIPOps(allowedIPOps); err != nil {
+		merr = multierror.Append(merr, err)
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// processPeerUpdates processes peer update operations
+func (b *WGBatcher) processPeerUpdates(peerUpdates map[string]*PeerUpdateOperation) error {
+	var merr *multierror.Error
+	for _, update := range peerUpdates {
+		if err := b.configurer.UpdatePeer(
+			update.PeerKey,
+			update.AllowedIPs,
+			update.KeepAlive,
+			update.Endpoint,
+			update.PreSharedKey,
+		); err != nil {
+			merr = multierror.Append(merr, fmt.Errorf("update peer %s: %w", update.PeerKey, err))
+		}
+	}
+	return nberrors.FormatErrorOrNil(merr)
+}
+
+// processAllowedIPOps processes allowed IP add/remove operations
+func (b *WGBatcher) processAllowedIPOps(allowedIPOps []AllowedIPOperation) error {
+	peerChanges := b.groupAllowedIPChanges(allowedIPOps)
+	return b.applyAllowedIPChanges(peerChanges)
+}
+
+// groupAllowedIPChanges groups allowed IP operations by peer
+func (b *WGBatcher) groupAllowedIPChanges(allowedIPOps []AllowedIPOperation) map[string]struct {
+	toAdd    []netip.Prefix
+	toRemove []netip.Prefix
+} {
+	peerChanges := make(map[string]struct {
+		toAdd    []netip.Prefix
+		toRemove []netip.Prefix
+	})
+
+	for _, op := range allowedIPOps {
+		changes := peerChanges[op.PeerKey]
+		if op.Operation == AllowedIPOpAdd {
+			changes.toAdd = append(changes.toAdd, op.Prefix)
+		} else {
+			changes.toRemove = append(changes.toRemove, op.Prefix)
+		}
+		peerChanges[op.PeerKey] = changes
+	}
+
+	return peerChanges
+}
+
+// applyAllowedIPChanges applies allowed IP changes for each peer
+func (b *WGBatcher) applyAllowedIPChanges(peerChanges map[string]struct {
+	toAdd    []netip.Prefix
+	toRemove []netip.Prefix
+}) error {
+	var merr *multierror.Error
+
+	for peerKey, changes := range peerChanges {
+		for _, prefix := range changes.toRemove {
+			if err := b.configurer.RemoveAllowedIP(peerKey, prefix); err != nil {
+				if errors.Is(err, configurer.ErrPeerNotFound) || errors.Is(err, configurer.ErrAllowedIPNotFound) {
+					log.Debugf("remove allowed IP %s for peer %s: %v", prefix, peerKey, err)
+				} else {
+					merr = multierror.Append(merr, fmt.Errorf("remove allowed IP %s for peer %s: %w", prefix, peerKey, err))
+				}
+			}
+		}
+
+		for _, prefix := range changes.toAdd {
+			if err := b.configurer.AddAllowedIP(peerKey, prefix); err != nil {
+				merr = multierror.Append(merr, fmt.Errorf("add allowed IP %s for peer %s: %w", prefix, peerKey, err))
+			}
+		}
+	}
+
+	return nberrors.FormatErrorOrNil(merr)
+}

client/iface/bind/activity.go

@@ -0,0 +1,96 @@
+package bind
+
+import (
+	"net/netip"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/monotime"
+)
+
+const (
+	saveFrequency = int64(5 * time.Second)
+)
+
+type PeerRecord struct {
+	Address      netip.AddrPort
+	LastActivity atomic.Int64 // UnixNano timestamp
+}
+
+type ActivityRecorder struct {
+	mu         sync.RWMutex
+	peers      map[string]*PeerRecord         // publicKey to PeerRecord map
+	addrToPeer map[netip.AddrPort]*PeerRecord // address to PeerRecord map
+}
+
+func NewActivityRecorder() *ActivityRecorder {
+	return &ActivityRecorder{
+		peers:      make(map[string]*PeerRecord),
+		addrToPeer: make(map[netip.AddrPort]*PeerRecord),
+	}
+}
+
+// GetLastActivities returns a snapshot of peer last activity
+func (r *ActivityRecorder) GetLastActivities() map[string]monotime.Time {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	activities := make(map[string]monotime.Time, len(r.peers))
+	for key, record := range r.peers {
+		monoTime := record.LastActivity.Load()
+		activities[key] = monotime.Time(monoTime)
+	}
+	return activities
+}
+
+// UpsertAddress adds or updates the address for a publicKey
+func (r *ActivityRecorder) UpsertAddress(publicKey string, address netip.AddrPort) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	var record *PeerRecord
+	record, exists := r.peers[publicKey]
+	if exists {
+		delete(r.addrToPeer, record.Address)
+		record.Address = address
+	} else {
+		record = &PeerRecord{
+			Address: address,
+		}
+		record.LastActivity.Store(int64(monotime.Now()))
+		r.peers[publicKey] = record
+	}
+
+	r.addrToPeer[address] = record
+}
+
+func (r *ActivityRecorder) Remove(publicKey string) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+	if record, exists := r.peers[publicKey]; exists {
+		delete(r.addrToPeer, record.Address)
+		delete(r.peers, publicKey)
+	}
+}
+
+// record updates LastActivity for the given address using atomic store
+func (r *ActivityRecorder) record(address netip.AddrPort) {
+	r.mu.RLock()
+	record, ok := r.addrToPeer[address]
+	r.mu.RUnlock()
+	if !ok {
+		log.Warnf("could not find record for address %s", address)
+		return
+	}
+
+	now := int64(monotime.Now())
+	last := record.LastActivity.Load()
+	if now-last < saveFrequency {
+		return
+	}
+
+	_ = record.LastActivity.CompareAndSwap(last, now)
+}

client/iface/bind/activity_test.go

@@ -0,0 +1,25 @@
+package bind
+
+import (
+	"net/netip"
+	"testing"
+	"time"
+
+	"github.com/netbirdio/netbird/monotime"
+)
+
+func TestActivityRecorder_GetLastActivities(t *testing.T) {
+	peer := "peer1"
+	ar := NewActivityRecorder()
+	ar.UpsertAddress("peer1", netip.MustParseAddrPort("192.168.0.5:51820"))
+	activities := ar.GetLastActivities()
+
+	p, ok := activities[peer]
+	if !ok {
+		t.Fatalf("Expected activity for peer %s, but got none", peer)
+	}
+
+	if monotime.Since(p) > 5*time.Second {
+		t.Fatalf("Expected activity for peer %s to be recent, but got %v", peer, p)
+	}
+}

client/iface/bind/control.go

@@ -0,0 +1,15 @@
+package bind
+
+import (
+	wireguard "golang.zx2c4.com/wireguard/conn"
+
+	nbnet "github.com/netbirdio/netbird/util/net"
+)
+
+// TODO: This is most likely obsolete since the control fns should be called by the wrapped udpconn (ice_bind.go)
+func init() {
+	listener := nbnet.NewListener()
+	if listener.ListenConfig.Control != nil {
+		*wireguard.ControlFns = append(*wireguard.ControlFns, listener.ListenConfig.Control)
+	}
+}

client/iface/bind/control_android.go

@@ -1,12 +0,0 @@
-package bind
-
-import (
-	wireguard "golang.zx2c4.com/wireguard/conn"
-
-	nbnet "github.com/netbirdio/netbird/util/net"
-)
-
-func init() {
-	// ControlFns is not thread safe and should only be modified during init.
-	*wireguard.ControlFns = append(*wireguard.ControlFns, nbnet.ControlProtectSocket)
-}

client/iface/bind/ice_bind.go

@@ -1,6 +1,7 @@
 package bind
 
 import (
+	"encoding/binary"
 	"fmt"
 	"net"
 	"net/netip"
@@ -15,6 +16,7 @@ import (
 	wgConn "golang.zx2c4.com/wireguard/conn"
 
 	"github.com/netbirdio/netbird/client/iface/wgaddr"
+	nbnet "github.com/netbirdio/netbird/util/net"
 )
 
 type RecvMessage struct {
@@ -51,22 +53,24 @@ type ICEBind struct {
 	closedChanMu sync.RWMutex // protect the closeChan recreation from reading from it.
 	closed       bool
 
-	muUDPMux sync.Mutex
-	udpMux   *UniversalUDPMuxDefault
-	address  wgaddr.Address
+	muUDPMux         sync.Mutex
+	udpMux           *UniversalUDPMuxDefault
+	address          wgaddr.Address
+	activityRecorder *ActivityRecorder
 }
 
 func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Address) *ICEBind {
 	b, _ := wgConn.NewStdNetBind().(*wgConn.StdNetBind)
 	ib := &ICEBind{
-		StdNetBind:   b,
-		RecvChan:     make(chan RecvMessage, 1),
-		transportNet: transportNet,
-		filterFn:     filterFn,
-		endpoints:    make(map[netip.Addr]net.Conn),
-		closedChan:   make(chan struct{}),
-		closed:       true,
-		address:      address,
+		StdNetBind:       b,
+		RecvChan:         make(chan RecvMessage, 1),
+		transportNet:     transportNet,
+		filterFn:         filterFn,
+		endpoints:        make(map[netip.Addr]net.Conn),
+		closedChan:       make(chan struct{}),
+		closed:           true,
+		address:          address,
+		activityRecorder: NewActivityRecorder(),
 	}
 
 	rc := receiverCreator{
@@ -100,6 +104,10 @@ func (s *ICEBind) Close() error {
 	return s.StdNetBind.Close()
 }
 
+func (s *ICEBind) ActivityRecorder() *ActivityRecorder {
+	return s.activityRecorder
+}
+
 // GetICEMux returns the ICE UDPMux that was created and used by ICEBind
 func (s *ICEBind) GetICEMux() (*UniversalUDPMuxDefault, error) {
 	s.muUDPMux.Lock()
@@ -146,7 +154,7 @@ func (s *ICEBind) createIPv4ReceiverFn(pc *ipv4.PacketConn, conn *net.UDPConn, r
 
 	s.udpMux = NewUniversalUDPMuxDefault(
 		UniversalUDPMuxParams{
-			UDPConn:   conn,
+			UDPConn:   nbnet.WrapUDPConn(conn),
 			Net:       s.transportNet,
 			FilterFn:  s.filterFn,
 			WGAddress: s.address,
@@ -199,6 +207,11 @@ func (s *ICEBind) createIPv4ReceiverFn(pc *ipv4.PacketConn, conn *net.UDPConn, r
 				continue
 			}
 			addrPort := msg.Addr.(*net.UDPAddr).AddrPort()
+
+			if isTransportPkg(msg.Buffers, msg.N) {
+				s.activityRecorder.record(addrPort)
+			}
+
 			ep := &wgConn.StdNetEndpoint{AddrPort: addrPort} // TODO: remove allocation
 			wgConn.GetSrcFromControl(msg.OOB[:msg.NN], ep)
 			eps[i] = ep
@@ -257,6 +270,13 @@ func (c *ICEBind) receiveRelayed(buffs [][]byte, sizes []int, eps []wgConn.Endpo
 		copy(buffs[0], msg.Buffer)
 		sizes[0] = len(msg.Buffer)
 		eps[0] = wgConn.Endpoint(msg.Endpoint)
+
+		if isTransportPkg(buffs, sizes[0]) {
+			if ep, ok := eps[0].(*Endpoint); ok {
+				c.activityRecorder.record(ep.AddrPort)
+			}
+		}
+
 		return 1, nil
 	}
 }
@@ -272,3 +292,19 @@ func putMessages(msgs *[]ipv6.Message, msgsPool *sync.Pool) {
 	}
 	msgsPool.Put(msgs)
 }
+
+func isTransportPkg(buffers [][]byte, n int) bool {
+	// The first buffer should contain at least 4 bytes for type
+	if len(buffers[0]) < 4 {
+		return true
+	}
+
+	// WireGuard packet type is a little-endian uint32 at start
+	packetType := binary.LittleEndian.Uint32(buffers[0][:4])
+
+	// Check if packetType matches known WireGuard message types
+	if packetType == 4 && n > 32 {
+		return true
+	}
+	return false
+}

client/iface/bind/udp_mux.go

@@ -296,14 +296,20 @@ func (m *UDPMuxDefault) RemoveConnByUfrag(ufrag string) {
 		return
 	}
 
-	m.addressMapMu.Lock()
-	defer m.addressMapMu.Unlock()
-
+	var allAddresses []string
 	for _, c := range removedConns {
 		addresses := c.getAddresses()
-		for _, addr := range addresses {
-			delete(m.addressMap, addr)
-		}
+		allAddresses = append(allAddresses, addresses...)
+	}
+
+	m.addressMapMu.Lock()
+	for _, addr := range allAddresses {
+		delete(m.addressMap, addr)
+	}
+	m.addressMapMu.Unlock()
+
+	for _, addr := range allAddresses {
+		m.notifyAddressRemoval(addr)
 	}
 }
 
@@ -351,14 +357,13 @@ func (m *UDPMuxDefault) registerConnForAddress(conn *udpMuxedConn, addr string)
 	}
 
 	m.addressMapMu.Lock()
-	defer m.addressMapMu.Unlock()
-
 	existing, ok := m.addressMap[addr]
 	if !ok {
 		existing = []*udpMuxedConn{}
 	}
 	existing = append(existing, conn)
 	m.addressMap[addr] = existing
+	m.addressMapMu.Unlock()
 
 	log.Debugf("ICE: registered %s for %s", addr, conn.params.Key)
 }
@@ -386,12 +391,12 @@ func (m *UDPMuxDefault) HandleSTUNMessage(msg *stun.Message, addr net.Addr) erro
 	// If you are using the same socket for the Host and SRFLX candidates, it might be that there are more than one
 	// muxed connection - one for the SRFLX candidate and the other one for the HOST one.
 	// We will then forward STUN packets to each of these connections.
-	m.addressMapMu.Lock()
+	m.addressMapMu.RLock()
 	var destinationConnList []*udpMuxedConn
 	if storedConns, ok := m.addressMap[addr.String()]; ok {
 		destinationConnList = append(destinationConnList, storedConns...)
 	}
-	m.addressMapMu.Unlock()
+	m.addressMapMu.RUnlock()
 
 	var isIPv6 bool
 	if udpAddr, _ := addr.(*net.UDPAddr); udpAddr != nil && udpAddr.IP.To4() == nil {

client/iface/bind/udp_mux_generic.go

@@ -0,0 +1,21 @@
+//go:build !ios
+
+package bind
+
+import (
+	nbnet "github.com/netbirdio/netbird/util/net"
+)
+
+func (m *UDPMuxDefault) notifyAddressRemoval(addr string) {
+	wrapped, ok := m.params.UDPConn.(*UDPConn)
+	if !ok {
+		return
+	}
+
+	nbnetConn, ok := wrapped.GetPacketConn().(*nbnet.UDPConn)
+	if !ok {
+		return
+	}
+
+	nbnetConn.RemoveAddress(addr)
+}

client/iface/bind/udp_mux_ios.go

@@ -0,0 +1,7 @@
+//go:build ios
+
+package bind
+
+func (m *UDPMuxDefault) notifyAddressRemoval(addr string) {
+	// iOS doesn't support nbnet hooks, so this is a no-op
+}

client/iface/bind/udp_mux_universal.go

@@ -62,7 +62,7 @@ func NewUniversalUDPMuxDefault(params UniversalUDPMuxParams) *UniversalUDPMuxDef
 
 	// wrap UDP connection, process server reflexive messages
 	// before they are passed to the UDPMux connection handler (connWorker)
-	m.params.UDPConn = &udpConn{
+	m.params.UDPConn = &UDPConn{
 		PacketConn: params.UDPConn,
 		mux:        m,
 		logger:     params.Logger,
@@ -70,7 +70,6 @@ func NewUniversalUDPMuxDefault(params UniversalUDPMuxParams) *UniversalUDPMuxDef
 		address:    params.WGAddress,
 	}
 
-	// embed UDPMux
 	udpMuxParams := UDPMuxParams{
 		Logger:  params.Logger,
 		UDPConn: m.params.UDPConn,
@@ -114,8 +113,8 @@ 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 {
+// 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
@@ -125,7 +124,12 @@ type udpConn struct {
 	address   wgaddr.Address
 }
 
-func (u *udpConn) WriteTo(b []byte, addr net.Addr) (int, error) {
+// GetPacketConn returns the underlying PacketConn
+func (u *UDPConn) GetPacketConn() net.PacketConn {
+	return u.PacketConn
+}
+
+func (u *UDPConn) WriteTo(b []byte, addr net.Addr) (int, error) {
 	if u.filterFn == nil {
 		return u.PacketConn.WriteTo(b, addr)
 	}
@@ -137,21 +141,21 @@ func (u *udpConn) WriteTo(b []byte, addr net.Addr) (int, error) {
 	return u.handleUncachedAddress(b, addr)
 }
 
-func (u *udpConn) handleCachedAddress(isRouted bool, b []byte, addr net.Addr) (int, error) {
+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) {
+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 {
+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)
@@ -164,7 +168,7 @@ func (u *udpConn) performFilterCheck(addr net.Addr) error {
 		return nil
 	}
 
-	if u.address.Network.Contains(a.AsSlice()) {
+	if u.address.Network.Contains(a) {
 		log.Warnf("Address %s is part of the NetBird network %s, refusing to write", addr, u.address)
 		return fmt.Errorf("address %s is part of the NetBird network %s, refusing to write", addr, u.address)
 	}

client/iface/configurer/common.go

@@ -0,0 +1,17 @@
+package configurer
+
+import (
+	"net"
+	"net/netip"
+)
+
+func prefixesToIPNets(prefixes []netip.Prefix) []net.IPNet {
+	ipNets := make([]net.IPNet, len(prefixes))
+	for i, prefix := range prefixes {
+		ipNets[i] = net.IPNet{
+			IP:   prefix.Addr().AsSlice(),                             // Convert netip.Addr to net.IP
+			Mask: net.CIDRMask(prefix.Bits(), prefix.Addr().BitLen()), // Create subnet mask
+		}
+	}
+	return ipNets
+}

client/iface/configurer/kernel_unix.go

@@ -5,13 +5,18 @@ package configurer
 import (
 	"fmt"
 	"net"
+	"net/netip"
 	"time"
 
 	log "github.com/sirupsen/logrus"
 	"golang.zx2c4.com/wireguard/wgctrl"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	"github.com/netbirdio/netbird/monotime"
 )
 
+var zeroKey wgtypes.Key
+
 type KernelConfigurer struct {
 	deviceName string
 }
@@ -43,7 +48,7 @@ func (c *KernelConfigurer) ConfigureInterface(privateKey string, port int) error
 	return nil
 }
 
-func (c *KernelConfigurer) UpdatePeer(peerKey string, allowedIps []net.IPNet, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
+func (c *KernelConfigurer) UpdatePeer(peerKey string, allowedIps []netip.Prefix, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
 	if err != nil {
 		return err
@@ -52,7 +57,7 @@ func (c *KernelConfigurer) UpdatePeer(peerKey string, allowedIps []net.IPNet, ke
 		PublicKey:         peerKeyParsed,
 		ReplaceAllowedIPs: false,
 		// don't replace allowed ips, wg will handle duplicated peer IP
-		AllowedIPs:                  allowedIps,
+		AllowedIPs:                  prefixesToIPNets(allowedIps),
 		PersistentKeepaliveInterval: &keepAlive,
 		Endpoint:                    endpoint,
 		PresharedKey:                preSharedKey,
@@ -89,10 +94,10 @@ func (c *KernelConfigurer) RemovePeer(peerKey string) error {
 	return nil
 }
 
-func (c *KernelConfigurer) AddAllowedIP(peerKey string, allowedIP string) error {
-	_, ipNet, err := net.ParseCIDR(allowedIP)
-	if err != nil {
-		return err
+func (c *KernelConfigurer) AddAllowedIP(peerKey string, allowedIP netip.Prefix) error {
+	ipNet := net.IPNet{
+		IP:   allowedIP.Addr().AsSlice(),
+		Mask: net.CIDRMask(allowedIP.Bits(), allowedIP.Addr().BitLen()),
 	}
 
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
@@ -103,7 +108,7 @@ func (c *KernelConfigurer) AddAllowedIP(peerKey string, allowedIP string) error
 		PublicKey:         peerKeyParsed,
 		UpdateOnly:        true,
 		ReplaceAllowedIPs: false,
-		AllowedIPs:        []net.IPNet{*ipNet},
+		AllowedIPs:        []net.IPNet{ipNet},
 	}
 
 	config := wgtypes.Config{
@@ -116,10 +121,10 @@ func (c *KernelConfigurer) AddAllowedIP(peerKey string, allowedIP string) error
 	return nil
 }
 
-func (c *KernelConfigurer) RemoveAllowedIP(peerKey string, allowedIP string) error {
-	_, ipNet, err := net.ParseCIDR(allowedIP)
-	if err != nil {
-		return fmt.Errorf("parse allowed IP: %w", err)
+func (c *KernelConfigurer) RemoveAllowedIP(peerKey string, allowedIP netip.Prefix) error {
+	ipNet := net.IPNet{
+		IP:   allowedIP.Addr().AsSlice(),
+		Mask: net.CIDRMask(allowedIP.Bits(), allowedIP.Addr().BitLen()),
 	}
 
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
@@ -187,7 +192,11 @@ func (c *KernelConfigurer) configure(config wgtypes.Config) error {
 	if err != nil {
 		return err
 	}
-	defer wg.Close()
+	defer func() {
+		if err := wg.Close(); err != nil {
+			log.Errorf("Failed to close wgctrl client: %v", err)
+		}
+	}()
 
 	// validate if device with name exists
 	_, err = wg.Device(c.deviceName)
@@ -201,14 +210,75 @@ func (c *KernelConfigurer) configure(config wgtypes.Config) error {
 func (c *KernelConfigurer) Close() {
 }
 
-func (c *KernelConfigurer) GetStats(peerKey string) (WGStats, error) {
-	peer, err := c.getPeer(c.deviceName, peerKey)
+func (c *KernelConfigurer) FullStats() (*Stats, error) {
+	wg, err := wgctrl.New()
 	if err != nil {
-		return WGStats{}, fmt.Errorf("get wireguard stats: %w", err)
+		return nil, fmt.Errorf("wgctl: %w", err)
 	}
-	return WGStats{
-		LastHandshake: peer.LastHandshakeTime,
-		TxBytes:       peer.TransmitBytes,
-		RxBytes:       peer.ReceiveBytes,
-	}, nil
+	defer func() {
+		err = wg.Close()
+		if err != nil {
+			log.Errorf("Got error while closing wgctl: %v", err)
+		}
+	}()
+
+	wgDevice, err := wg.Device(c.deviceName)
+	if err != nil {
+		return nil, fmt.Errorf("get device %s: %w", c.deviceName, err)
+	}
+	fullStats := &Stats{
+		DeviceName: wgDevice.Name,
+		PublicKey:  wgDevice.PublicKey.String(),
+		ListenPort: wgDevice.ListenPort,
+		FWMark:     wgDevice.FirewallMark,
+		Peers:      []Peer{},
+	}
+
+	for _, p := range wgDevice.Peers {
+		peer := Peer{
+			PublicKey:     p.PublicKey.String(),
+			AllowedIPs:    p.AllowedIPs,
+			TxBytes:       p.TransmitBytes,
+			RxBytes:       p.ReceiveBytes,
+			LastHandshake: p.LastHandshakeTime,
+			PresharedKey:  p.PresharedKey != zeroKey,
+		}
+		if p.Endpoint != nil {
+			peer.Endpoint = *p.Endpoint
+		}
+		fullStats.Peers = append(fullStats.Peers, peer)
+	}
+	return fullStats, nil
+}
+
+func (c *KernelConfigurer) GetStats() (map[string]WGStats, error) {
+	stats := make(map[string]WGStats)
+	wg, err := wgctrl.New()
+	if err != nil {
+		return nil, fmt.Errorf("wgctl: %w", err)
+	}
+	defer func() {
+		err = wg.Close()
+		if err != nil {
+			log.Errorf("Got error while closing wgctl: %v", err)
+		}
+	}()
+
+	wgDevice, err := wg.Device(c.deviceName)
+	if err != nil {
+		return nil, fmt.Errorf("get device %s: %w", c.deviceName, err)
+	}
+
+	for _, peer := range wgDevice.Peers {
+		stats[peer.PublicKey.String()] = WGStats{
+			LastHandshake: peer.LastHandshakeTime,
+			TxBytes:       peer.TransmitBytes,
+			RxBytes:       peer.ReceiveBytes,
+		}
+	}
+	return stats, nil
+}
+
+func (c *KernelConfigurer) LastActivities() map[string]monotime.Time {
+	return nil
 }

client/iface/configurer/usp.go

@@ -1,9 +1,11 @@
 package configurer
 
 import (
+	"encoding/base64"
 	"encoding/hex"
 	"fmt"
 	"net"
+	"net/netip"
 	"os"
 	"runtime"
 	"strconv"
@@ -14,22 +16,40 @@ import (
 	"golang.zx2c4.com/wireguard/device"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
+	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/monotime"
 	nbnet "github.com/netbirdio/netbird/util/net"
 )
 
+const (
+	privateKey                  = "private_key"
+	ipcKeyLastHandshakeTimeSec  = "last_handshake_time_sec"
+	ipcKeyLastHandshakeTimeNsec = "last_handshake_time_nsec"
+	ipcKeyTxBytes               = "tx_bytes"
+	ipcKeyRxBytes               = "rx_bytes"
+	allowedIP                   = "allowed_ip"
+	endpoint                    = "endpoint"
+	fwmark                      = "fwmark"
+	listenPort                  = "listen_port"
+	publicKey                   = "public_key"
+	presharedKey                = "preshared_key"
+)
+
 var ErrAllowedIPNotFound = fmt.Errorf("allowed IP not found")
 
 type WGUSPConfigurer struct {
-	device     *device.Device
-	deviceName string
+	device           *device.Device
+	deviceName       string
+	activityRecorder *bind.ActivityRecorder
 
 	uapiListener net.Listener
 }
 
-func NewUSPConfigurer(device *device.Device, deviceName string) *WGUSPConfigurer {
+func NewUSPConfigurer(device *device.Device, deviceName string, activityRecorder *bind.ActivityRecorder) *WGUSPConfigurer {
 	wgCfg := &WGUSPConfigurer{
-		device:     device,
-		deviceName: deviceName,
+		device:           device,
+		deviceName:       deviceName,
+		activityRecorder: activityRecorder,
 	}
 	wgCfg.startUAPI()
 	return wgCfg
@@ -52,7 +72,7 @@ func (c *WGUSPConfigurer) ConfigureInterface(privateKey string, port int) error
 	return c.device.IpcSet(toWgUserspaceString(config))
 }
 
-func (c *WGUSPConfigurer) UpdatePeer(peerKey string, allowedIps []net.IPNet, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
+func (c *WGUSPConfigurer) UpdatePeer(peerKey string, allowedIps []netip.Prefix, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
 	if err != nil {
 		return err
@@ -61,7 +81,7 @@ func (c *WGUSPConfigurer) UpdatePeer(peerKey string, allowedIps []net.IPNet, kee
 		PublicKey:         peerKeyParsed,
 		ReplaceAllowedIPs: false,
 		// don't replace allowed ips, wg will handle duplicated peer IP
-		AllowedIPs:                  allowedIps,
+		AllowedIPs:                  prefixesToIPNets(allowedIps),
 		PersistentKeepaliveInterval: &keepAlive,
 		PresharedKey:                preSharedKey,
 		Endpoint:                    endpoint,
@@ -71,7 +91,19 @@ func (c *WGUSPConfigurer) UpdatePeer(peerKey string, allowedIps []net.IPNet, kee
 		Peers: []wgtypes.PeerConfig{peer},
 	}
 
-	return c.device.IpcSet(toWgUserspaceString(config))
+	if ipcErr := c.device.IpcSet(toWgUserspaceString(config)); ipcErr != nil {
+		return ipcErr
+	}
+
+	if endpoint != nil {
+		addr, err := netip.ParseAddr(endpoint.IP.String())
+		if err != nil {
+			return fmt.Errorf("failed to parse endpoint address: %w", err)
+		}
+		addrPort := netip.AddrPortFrom(addr, uint16(endpoint.Port))
+		c.activityRecorder.UpsertAddress(peerKey, addrPort)
+	}
+	return nil
 }
 
 func (c *WGUSPConfigurer) RemovePeer(peerKey string) error {
@@ -88,13 +120,16 @@ func (c *WGUSPConfigurer) RemovePeer(peerKey string) error {
 	config := wgtypes.Config{
 		Peers: []wgtypes.PeerConfig{peer},
 	}
-	return c.device.IpcSet(toWgUserspaceString(config))
+	ipcErr := c.device.IpcSet(toWgUserspaceString(config))
+
+	c.activityRecorder.Remove(peerKey)
+	return ipcErr
 }
 
-func (c *WGUSPConfigurer) AddAllowedIP(peerKey string, allowedIP string) error {
-	_, ipNet, err := net.ParseCIDR(allowedIP)
-	if err != nil {
-		return err
+func (c *WGUSPConfigurer) AddAllowedIP(peerKey string, allowedIP netip.Prefix) error {
+	ipNet := net.IPNet{
+		IP:   allowedIP.Addr().AsSlice(),
+		Mask: net.CIDRMask(allowedIP.Bits(), allowedIP.Addr().BitLen()),
 	}
 
 	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
@@ -105,7 +140,7 @@ func (c *WGUSPConfigurer) AddAllowedIP(peerKey string, allowedIP string) error {
 		PublicKey:         peerKeyParsed,
 		UpdateOnly:        true,
 		ReplaceAllowedIPs: false,
-		AllowedIPs:        []net.IPNet{*ipNet},
+		AllowedIPs:        []net.IPNet{ipNet},
 	}
 
 	config := wgtypes.Config{
@@ -115,7 +150,7 @@ 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, allowedIP netip.Prefix) error {
 	ipc, err := c.device.IpcGet()
 	if err != nil {
 		return err
@@ -138,6 +173,8 @@ func (c *WGUSPConfigurer) RemoveAllowedIP(peerKey string, ip string) error {
 
 	foundPeer := false
 	removedAllowedIP := false
+	ip := allowedIP.String()
+
 	for _, line := range lines {
 		line = strings.TrimSpace(line)
 
@@ -160,8 +197,8 @@ func (c *WGUSPConfigurer) RemoveAllowedIP(peerKey string, ip string) error {
 
 		// Append the line to the output string
 		if foundPeer && strings.HasPrefix(line, "allowed_ip=") {
-			allowedIP := strings.TrimPrefix(line, "allowed_ip=")
-			_, ipNet, err := net.ParseCIDR(allowedIP)
+			allowedIPStr := strings.TrimPrefix(line, "allowed_ip=")
+			_, ipNet, err := net.ParseCIDR(allowedIPStr)
 			if err != nil {
 				return err
 			}
@@ -178,6 +215,19 @@ func (c *WGUSPConfigurer) RemoveAllowedIP(peerKey string, ip string) error {
 	return c.device.IpcSet(toWgUserspaceString(config))
 }
 
+func (c *WGUSPConfigurer) FullStats() (*Stats, error) {
+	ipcStr, err := c.device.IpcGet()
+	if err != nil {
+		return nil, fmt.Errorf("IpcGet failed: %w", err)
+	}
+
+	return parseStatus(c.deviceName, ipcStr)
+}
+
+func (c *WGUSPConfigurer) LastActivities() map[string]monotime.Time {
+	return c.activityRecorder.GetLastActivities()
+}
+
 // startUAPI starts the UAPI listener for managing the WireGuard interface via external tool
 func (t *WGUSPConfigurer) startUAPI() {
 	var err error
@@ -217,91 +267,75 @@ func (t *WGUSPConfigurer) Close() {
 	}
 }
 
-func (t *WGUSPConfigurer) GetStats(peerKey string) (WGStats, error) {
+func (t *WGUSPConfigurer) GetStats() (map[string]WGStats, error) {
 	ipc, err := t.device.IpcGet()
 	if err != nil {
-		return WGStats{}, fmt.Errorf("ipc get: %w", err)
+		return nil, fmt.Errorf("ipc get: %w", err)
 	}
 
-	stats, err := findPeerInfo(ipc, peerKey, []string{
-		"last_handshake_time_sec",
-		"last_handshake_time_nsec",
-		"tx_bytes",
-		"rx_bytes",
-	})
-	if err != nil {
-		return WGStats{}, fmt.Errorf("find peer info: %w", err)
-	}
-
-	sec, err := strconv.ParseInt(stats["last_handshake_time_sec"], 10, 64)
-	if err != nil {
-		return WGStats{}, fmt.Errorf("parse handshake sec: %w", err)
-	}
-	nsec, err := strconv.ParseInt(stats["last_handshake_time_nsec"], 10, 64)
-	if err != nil {
-		return WGStats{}, fmt.Errorf("parse handshake nsec: %w", err)
-	}
-	txBytes, err := strconv.ParseInt(stats["tx_bytes"], 10, 64)
-	if err != nil {
-		return WGStats{}, fmt.Errorf("parse tx_bytes: %w", err)
-	}
-	rxBytes, err := strconv.ParseInt(stats["rx_bytes"], 10, 64)
-	if err != nil {
-		return WGStats{}, fmt.Errorf("parse rx_bytes: %w", err)
-	}
-
-	return WGStats{
-		LastHandshake: time.Unix(sec, nsec),
-		TxBytes:       txBytes,
-		RxBytes:       rxBytes,
-	}, nil
+	return parseTransfers(ipc)
 }
 
-func findPeerInfo(ipcInput string, peerKey string, searchConfigKeys []string) (map[string]string, error) {
-	peerKeyParsed, err := wgtypes.ParseKey(peerKey)
-	if err != nil {
-		return nil, fmt.Errorf("parse key: %w", err)
-	}
-
-	hexKey := hex.EncodeToString(peerKeyParsed[:])
-
-	lines := strings.Split(ipcInput, "\n")
-
-	configFound := map[string]string{}
-	foundPeer := false
+func parseTransfers(ipc string) (map[string]WGStats, error) {
+	stats := make(map[string]WGStats)
+	var (
+		currentKey   string
+		currentStats WGStats
+		hasPeer      bool
+	)
+	lines := strings.Split(ipc, "\n")
 	for _, line := range lines {
 		line = strings.TrimSpace(line)
 
 		// If we're within the details of the found peer and encounter another public key,
 		// this means we're starting another peer's details. So, stop.
-		if strings.HasPrefix(line, "public_key=") && foundPeer {
-			break
-		}
-
-		// Identify the peer with the specific public key
-		if line == fmt.Sprintf("public_key=%s", hexKey) {
-			foundPeer = true
-		}
-
-		for _, key := range searchConfigKeys {
-			if foundPeer && strings.HasPrefix(line, key+"=") {
-				v := strings.SplitN(line, "=", 2)
-				configFound[v[0]] = v[1]
+		if strings.HasPrefix(line, "public_key=") {
+			peerID := strings.TrimPrefix(line, "public_key=")
+			h, err := hex.DecodeString(peerID)
+			if err != nil {
+				return nil, fmt.Errorf("decode peerID: %w", err)
 			}
+			currentKey = base64.StdEncoding.EncodeToString(h)
+			currentStats = WGStats{} // Reset stats for the new peer
+			hasPeer = true
+			stats[currentKey] = currentStats
+			continue
+		}
+
+		if !hasPeer {
+			continue
+		}
+
+		key := strings.SplitN(line, "=", 2)
+		if len(key) != 2 {
+			continue
+		}
+		switch key[0] {
+		case ipcKeyLastHandshakeTimeSec:
+			hs, err := toLastHandshake(key[1])
+			if err != nil {
+				return nil, err
+			}
+			currentStats.LastHandshake = hs
+			stats[currentKey] = currentStats
+		case ipcKeyRxBytes:
+			rxBytes, err := toBytes(key[1])
+			if err != nil {
+				return nil, fmt.Errorf("parse rx_bytes: %w", err)
+			}
+			currentStats.RxBytes = rxBytes
+			stats[currentKey] = currentStats
+		case ipcKeyTxBytes:
+			TxBytes, err := toBytes(key[1])
+			if err != nil {
+				return nil, fmt.Errorf("parse tx_bytes: %w", err)
+			}
+			currentStats.TxBytes = TxBytes
+			stats[currentKey] = currentStats
 		}
 	}
 
-	// todo: use multierr
-	for _, key := range searchConfigKeys {
-		if _, ok := configFound[key]; !ok {
-			return configFound, fmt.Errorf("config key not found: %s", key)
-		}
-	}
-	if !foundPeer {
-		return nil, fmt.Errorf("%w: %s", ErrPeerNotFound, peerKey)
-	}
-
-	return configFound, nil
+	return stats, nil
 }
 
 func toWgUserspaceString(wgCfg wgtypes.Config) string {
@@ -355,9 +389,154 @@ func toWgUserspaceString(wgCfg wgtypes.Config) string {
 	return sb.String()
 }
 
+func toLastHandshake(stringVar string) (time.Time, error) {
+	sec, err := strconv.ParseInt(stringVar, 10, 64)
+	if err != nil {
+		return time.Time{}, fmt.Errorf("parse handshake sec: %w", err)
+	}
+	return time.Unix(sec, 0), nil
+}
+
+func toBytes(s string) (int64, error) {
+	return strconv.ParseInt(s, 10, 64)
+}
+
 func getFwmark() int {
 	if nbnet.AdvancedRouting() {
 		return nbnet.ControlPlaneMark
 	}
 	return 0
 }
+
+func hexToWireguardKey(hexKey string) (wgtypes.Key, error) {
+	// Decode hex string to bytes
+	keyBytes, err := hex.DecodeString(hexKey)
+	if err != nil {
+		return wgtypes.Key{}, fmt.Errorf("failed to decode hex key: %w", err)
+	}
+
+	// Check if we have the right number of bytes (WireGuard keys are 32 bytes)
+	if len(keyBytes) != 32 {
+		return wgtypes.Key{}, fmt.Errorf("invalid key length: expected 32 bytes, got %d", len(keyBytes))
+	}
+
+	// Convert to wgtypes.Key
+	var key wgtypes.Key
+	copy(key[:], keyBytes)
+
+	return key, nil
+}
+
+func parseStatus(deviceName, ipcStr string) (*Stats, error) {
+	stats := &Stats{DeviceName: deviceName}
+	var currentPeer *Peer
+	for _, line := range strings.Split(strings.TrimSpace(ipcStr), "\n") {
+		if line == "" {
+			continue
+		}
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) != 2 {
+			continue
+		}
+		key := parts[0]
+		val := parts[1]
+
+		switch key {
+		case privateKey:
+			key, err := hexToWireguardKey(val)
+			if err != nil {
+				log.Errorf("failed to parse private key: %v", err)
+				continue
+			}
+			stats.PublicKey = key.PublicKey().String()
+		case publicKey:
+			// Save previous peer
+			if currentPeer != nil {
+				stats.Peers = append(stats.Peers, *currentPeer)
+			}
+			key, err := hexToWireguardKey(val)
+			if err != nil {
+				log.Errorf("failed to parse public key: %v", err)
+				continue
+			}
+			currentPeer = &Peer{
+				PublicKey: key.String(),
+			}
+		case listenPort:
+			if port, err := strconv.Atoi(val); err == nil {
+				stats.ListenPort = port
+			}
+		case fwmark:
+			if fwmark, err := strconv.Atoi(val); err == nil {
+				stats.FWMark = fwmark
+			}
+		case endpoint:
+			if currentPeer == nil {
+				continue
+			}
+
+			host, portStr, err := net.SplitHostPort(strings.Trim(val, "[]"))
+			if err != nil {
+				log.Errorf("failed to parse endpoint: %v", err)
+				continue
+			}
+			port, err := strconv.Atoi(portStr)
+			if err != nil {
+				log.Errorf("failed to parse endpoint port: %v", err)
+				continue
+			}
+			currentPeer.Endpoint = net.UDPAddr{
+				IP:   net.ParseIP(host),
+				Port: port,
+			}
+		case allowedIP:
+			if currentPeer == nil {
+				continue
+			}
+			_, ipnet, err := net.ParseCIDR(val)
+			if err == nil {
+				currentPeer.AllowedIPs = append(currentPeer.AllowedIPs, *ipnet)
+			}
+		case ipcKeyTxBytes:
+			if currentPeer == nil {
+				continue
+			}
+			rxBytes, err := toBytes(val)
+			if err != nil {
+				continue
+			}
+			currentPeer.TxBytes = rxBytes
+		case ipcKeyRxBytes:
+			if currentPeer == nil {
+				continue
+			}
+			rxBytes, err := toBytes(val)
+			if err != nil {
+				continue
+			}
+			currentPeer.RxBytes = rxBytes
+
+		case ipcKeyLastHandshakeTimeSec:
+			if currentPeer == nil {
+				continue
+			}
+
+			ts, err := toLastHandshake(val)
+			if err != nil {
+				continue
+			}
+			currentPeer.LastHandshake = ts
+		case presharedKey:
+			if currentPeer == nil {
+				continue
+			}
+			if val != "" {
+				currentPeer.PresharedKey = true
+			}
+		}
+	}
+	if currentPeer != nil {
+		stats.Peers = append(stats.Peers, *currentPeer)
+	}
+	return stats, nil
+}

client/iface/configurer/usp_test.go

@@ -2,10 +2,8 @@ package configurer
 
 import (
 	"encoding/hex"
-	"fmt"
 	"testing"
 
-	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 )
@@ -34,58 +32,35 @@ errno=0
 
 `
 
-func Test_findPeerInfo(t *testing.T) {
+func Test_parseTransfers(t *testing.T) {
 	tests := []struct {
-		name       string
-		peerKey    string
-		searchKeys []string
-		want       map[string]string
-		wantErr    bool
+		name    string
+		peerKey string
+		want    WGStats
 	}{
 		{
-			name:       "single",
-			peerKey:    "58402e695ba1772b1cc9309755f043251ea77fdcf10fbe63989ceb7e19321376",
-			searchKeys: []string{"tx_bytes"},
-			want: map[string]string{
-				"tx_bytes": "38333",
+			name:    "single",
+			peerKey: "b85996fecc9c7f1fc6d2572a76eda11d59bcd20be8e543b15ce4bd85a8e75a33",
+			want: WGStats{
+				TxBytes: 0,
+				RxBytes: 0,
 			},
-			wantErr: false,
 		},
 		{
-			name:       "multiple",
-			peerKey:    "58402e695ba1772b1cc9309755f043251ea77fdcf10fbe63989ceb7e19321376",
-			searchKeys: []string{"tx_bytes", "rx_bytes"},
-			want: map[string]string{
-				"tx_bytes": "38333",
-				"rx_bytes": "2224",
+			name:    "multiple",
+			peerKey: "58402e695ba1772b1cc9309755f043251ea77fdcf10fbe63989ceb7e19321376",
+			want: WGStats{
+				TxBytes: 38333,
+				RxBytes: 2224,
 			},
-			wantErr: false,
 		},
 		{
-			name:       "lastpeer",
-			peerKey:    "662e14fd594556f522604703340351258903b64f35553763f19426ab2a515c58",
-			searchKeys: []string{"tx_bytes", "rx_bytes"},
-			want: map[string]string{
-				"tx_bytes": "1212111",
-				"rx_bytes": "1929999999",
+			name:    "lastpeer",
+			peerKey: "662e14fd594556f522604703340351258903b64f35553763f19426ab2a515c58",
+			want: WGStats{
+				TxBytes: 1212111,
+				RxBytes: 1929999999,
 			},
-			wantErr: false,
-		},
-		{
-			name:       "peer not found",
-			peerKey:    "1111111111111111111111111111111111111111111111111111111111111111",
-			searchKeys: nil,
-			want:       nil,
-			wantErr:    true,
-		},
-		{
-			name:       "key not found",
-			peerKey:    "662e14fd594556f522604703340351258903b64f35553763f19426ab2a515c58",
-			searchKeys: []string{"tx_bytes", "unknown_key"},
-			want: map[string]string{
-				"tx_bytes": "1212111",
-			},
-			wantErr: true,
 		},
 	}
 	for _, tt := range tests {
@@ -96,9 +71,19 @@ func Test_findPeerInfo(t *testing.T) {
 			key, err := wgtypes.NewKey(res)
 			require.NoError(t, err)
 
-			got, err := findPeerInfo(ipcFixture, key.String(), tt.searchKeys)
-			assert.Equalf(t, tt.wantErr, err != nil, fmt.Sprintf("findPeerInfo(%v, %v, %v)", ipcFixture, key.String(), tt.searchKeys))
-			assert.Equalf(t, tt.want, got, "findPeerInfo(%v, %v, %v)", ipcFixture, key.String(), tt.searchKeys)
+			stats, err := parseTransfers(ipcFixture)
+			if err != nil {
+				require.NoError(t, err)
+				return
+			}
+
+			stat, ok := stats[key.String()]
+			if !ok {
+				require.True(t, ok)
+				return
+			}
+
+			require.Equal(t, tt.want, stat)
 		})
 	}
 }

client/iface/configurer/wgshow.go

@@ -0,0 +1,24 @@
+package configurer
+
+import (
+	"net"
+	"time"
+)
+
+type Peer struct {
+	PublicKey     string
+	Endpoint      net.UDPAddr
+	AllowedIPs    []net.IPNet
+	TxBytes       int64
+	RxBytes       int64
+	LastHandshake time.Time
+	PresharedKey  bool
+}
+
+type Stats struct {
+	DeviceName string
+	PublicKey  string
+	ListenPort int
+	FWMark     int
+	Peers      []Peer
+}

client/iface/device/device_android.go

@@ -24,6 +24,7 @@ type WGTunDevice struct {
 	mtu        int
 	iceBind    *bind.ICEBind
 	tunAdapter TunAdapter
+	disableDNS bool
 
 	name           string
 	device         *device.Device
@@ -32,7 +33,7 @@ type WGTunDevice struct {
 	configurer     WGConfigurer
 }
 
-func NewTunDevice(address wgaddr.Address, port int, key string, mtu int, iceBind *bind.ICEBind, tunAdapter TunAdapter) *WGTunDevice {
+func NewTunDevice(address wgaddr.Address, port int, key string, mtu int, iceBind *bind.ICEBind, tunAdapter TunAdapter, disableDNS bool) *WGTunDevice {
 	return &WGTunDevice{
 		address:    address,
 		port:       port,
@@ -40,6 +41,7 @@ func NewTunDevice(address wgaddr.Address, port int, key string, mtu int, iceBind
 		mtu:        mtu,
 		iceBind:    iceBind,
 		tunAdapter: tunAdapter,
+		disableDNS: disableDNS,
 	}
 }
 
@@ -49,6 +51,13 @@ func (t *WGTunDevice) Create(routes []string, dns string, searchDomains []string
 	routesString := routesToString(routes)
 	searchDomainsToString := searchDomainsToString(searchDomains)
 
+	// Skip DNS configuration when DisableDNS is enabled
+	if t.disableDNS {
+		log.Info("DNS is disabled, skipping DNS and search domain configuration")
+		dns = ""
+		searchDomainsToString = ""
+	}
+
 	fd, err := t.tunAdapter.ConfigureInterface(t.address.String(), t.mtu, dns, searchDomainsToString, routesString)
 	if err != nil {
 		log.Errorf("failed to create Android interface: %s", err)
@@ -70,7 +79,7 @@ func (t *WGTunDevice) Create(routes []string, dns string, searchDomains []string
 	// this helps with support for the older NetBird clients that had a hardcoded direct mode
 	// t.device.DisableSomeRoamingForBrokenMobileSemantics()
 
-	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name, t.iceBind.ActivityRecorder())
 	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()

client/iface/device/device_darwin.go

@@ -61,7 +61,7 @@ func (t *TunDevice) Create() (WGConfigurer, error) {
 		return nil, fmt.Errorf("error assigning ip: %s", err)
 	}
 
-	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name, t.iceBind.ActivityRecorder())
 	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()

client/iface/device/device_filter.go

@@ -1,7 +1,6 @@
 package device
 
 import (
-	"net"
 	"net/netip"
 	"sync"
 
@@ -10,11 +9,11 @@ import (
 
 // PacketFilter interface for firewall abilities
 type PacketFilter interface {
-	// DropOutgoing filter outgoing packets from host to external destinations
-	DropOutgoing(packetData []byte, size int) bool
+	// FilterOutbound filter outgoing packets from host to external destinations
+	FilterOutbound(packetData []byte, size int) bool
 
-	// DropIncoming filter incoming packets from external sources to host
-	DropIncoming(packetData []byte, size int) bool
+	// FilterInbound filter incoming packets from external sources to host
+	FilterInbound(packetData []byte, size int) bool
 
 	// AddUDPPacketHook calls hook when UDP packet from given direction matched
 	//
@@ -24,9 +23,6 @@ type PacketFilter interface {
 
 	// RemovePacketHook removes hook by ID
 	RemovePacketHook(hookID string) error
-
-	// SetNetwork of the wireguard interface to which filtering applied
-	SetNetwork(*net.IPNet)
 }
 
 // FilteredDevice to override Read or Write of packets
@@ -58,7 +54,7 @@ func (d *FilteredDevice) Read(bufs [][]byte, sizes []int, offset int) (n int, er
 	}
 
 	for i := 0; i < n; i++ {
-		if filter.DropOutgoing(bufs[i][offset:offset+sizes[i]], sizes[i]) {
+		if filter.FilterOutbound(bufs[i][offset:offset+sizes[i]], sizes[i]) {
 			bufs = append(bufs[:i], bufs[i+1:]...)
 			sizes = append(sizes[:i], sizes[i+1:]...)
 			n--
@@ -82,7 +78,7 @@ func (d *FilteredDevice) Write(bufs [][]byte, offset int) (int, error) {
 	filteredBufs := make([][]byte, 0, len(bufs))
 	dropped := 0
 	for _, buf := range bufs {
-		if !filter.DropIncoming(buf[offset:], len(buf)) {
+		if !filter.FilterInbound(buf[offset:], len(buf)) {
 			filteredBufs = append(filteredBufs, buf)
 			dropped++
 		}

client/iface/device/device_filter_test.go

@@ -146,7 +146,7 @@ func TestDeviceWrapperRead(t *testing.T) {
 		tun.EXPECT().Write(mockBufs, 0).Return(0, nil)
 
 		filter := mocks.NewMockPacketFilter(ctrl)
-		filter.EXPECT().DropIncoming(gomock.Any(), gomock.Any()).Return(true)
+		filter.EXPECT().FilterInbound(gomock.Any(), gomock.Any()).Return(true)
 
 		wrapped := newDeviceFilter(tun)
 		wrapped.filter = filter
@@ -201,7 +201,7 @@ func TestDeviceWrapperRead(t *testing.T) {
 				return 1, nil
 			})
 		filter := mocks.NewMockPacketFilter(ctrl)
-		filter.EXPECT().DropOutgoing(gomock.Any(), gomock.Any()).Return(true)
+		filter.EXPECT().FilterOutbound(gomock.Any(), gomock.Any()).Return(true)
 
 		wrapped := newDeviceFilter(tun)
 		wrapped.filter = filter

client/iface/device/device_ios.go

@@ -71,7 +71,7 @@ func (t *TunDevice) Create() (WGConfigurer, error) {
 	// this helps with support for the older NetBird clients that had a hardcoded direct mode
 	// t.device.DisableSomeRoamingForBrokenMobileSemantics()
 
-	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name, t.iceBind.ActivityRecorder())
 	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()

client/iface/device/device_netstack.go

@@ -51,7 +51,11 @@ func (t *TunNetstackDevice) Create() (WGConfigurer, error) {
 	log.Info("create nbnetstack tun interface")
 
 	// TODO: get from service listener runtime IP
-	dnsAddr := nbnet.GetLastIPFromNetwork(t.address.Network, 1)
+	dnsAddr, err := nbnet.GetLastIPFromNetwork(t.address.Network, 1)
+	if err != nil {
+		return nil, fmt.Errorf("last ip: %w", err)
+	}
+
 	log.Debugf("netstack using address: %s", t.address.IP)
 	t.nsTun = nbnetstack.NewNetStackTun(t.listenAddress, t.address.IP, dnsAddr, t.mtu)
 	log.Debugf("netstack using dns address: %s", dnsAddr)
@@ -68,7 +72,7 @@ func (t *TunNetstackDevice) Create() (WGConfigurer, error) {
 		device.NewLogger(wgLogLevel(), "[netbird] "),
 	)
 
-	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name, t.iceBind.ActivityRecorder())
 	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		_ = tunIface.Close()

client/iface/device/device_usp_unix.go

@@ -64,7 +64,7 @@ func (t *USPDevice) Create() (WGConfigurer, error) {
 		return nil, fmt.Errorf("error assigning ip: %s", err)
 	}
 
-	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name, t.iceBind.ActivityRecorder())
 	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()

client/iface/device/device_windows.go

@@ -94,7 +94,7 @@ func (t *TunDevice) Create() (WGConfigurer, error) {
 		return nil, fmt.Errorf("error assigning ip: %s", err)
 	}
 
-	t.configurer = configurer.NewUSPConfigurer(t.device, t.name)
+	t.configurer = configurer.NewUSPConfigurer(t.device, t.name, t.iceBind.ActivityRecorder())
 	err = t.configurer.ConfigureInterface(t.key, t.port)
 	if err != nil {
 		t.device.Close()

client/iface/device/interface.go

@@ -2,19 +2,23 @@ package device
 
 import (
 	"net"
+	"net/netip"
 	"time"
 
 	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 
 	"github.com/netbirdio/netbird/client/iface/configurer"
+	"github.com/netbirdio/netbird/monotime"
 )
 
 type WGConfigurer interface {
 	ConfigureInterface(privateKey string, port int) error
-	UpdatePeer(peerKey string, allowedIps []net.IPNet, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error
+	UpdatePeer(peerKey string, allowedIps []netip.Prefix, 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
+	AddAllowedIP(peerKey string, allowedIP netip.Prefix) error
+	RemoveAllowedIP(peerKey string, allowedIP netip.Prefix) error
 	Close()
-	GetStats(peerKey string) (configurer.WGStats, error)
+	GetStats() (map[string]configurer.WGStats, error)
+	FullStats() (*configurer.Stats, error)
+	LastActivities() map[string]monotime.Time
 }

client/iface/device/wg_link_freebsd.go

@@ -64,7 +64,15 @@ func (l *wgLink) assignAddr(address wgaddr.Address) error {
 	}
 
 	ip := address.IP.String()
-	mask := "0x" + address.Network.Mask.String()
+
+	// Convert prefix length to hex netmask
+	prefixLen := address.Network.Bits()
+	if !address.IP.Is4() {
+		return fmt.Errorf("IPv6 not supported for interface assignment")
+	}
+
+	maskBits := uint32(0xffffffff) << (32 - prefixLen)
+	mask := fmt.Sprintf("0x%08x", maskBits)
 
 	log.Infof("assign addr %s mask %s to %s interface", ip, mask, l.name)
 

client/iface/iface.go

@@ -21,6 +21,7 @@ import (
 	"github.com/netbirdio/netbird/client/iface/device"
 	"github.com/netbirdio/netbird/client/iface/wgaddr"
 	"github.com/netbirdio/netbird/client/iface/wgproxy"
+	"github.com/netbirdio/netbird/monotime"
 )
 
 const (
@@ -29,6 +30,11 @@ const (
 	WgInterfaceDefault = configurer.WgInterfaceDefault
 )
 
+var (
+	// ErrIfaceNotFound is returned when the WireGuard interface is not found
+	ErrIfaceNotFound = fmt.Errorf("wireguard interface not found")
+)
+
 type wgProxyFactory interface {
 	GetProxy() wgproxy.Proxy
 	Free() error
@@ -43,6 +49,7 @@ type WGIFaceOpts struct {
 	MobileArgs   *device.MobileIFaceArguments
 	TransportNet transport.Net
 	FilterFn     bind.FilterFn
+	DisableDNS   bool
 }
 
 // WGIface represents an interface instance
@@ -52,6 +59,7 @@ type WGIface struct {
 	mu            sync.Mutex
 
 	configurer     device.WGConfigurer
+	batcher        *WGBatcher
 	filter         device.PacketFilter
 	wgProxyFactory wgProxyFactory
 }
@@ -111,40 +119,66 @@ func (w *WGIface) UpdateAddr(newAddr string) error {
 }
 
 // UpdatePeer updates existing Wireguard Peer or creates a new one if doesn't exist
-// Endpoint is optional
+// Endpoint is optional.
+// If allowedIps is given it will be added to the existing ones.
 func (w *WGIface) UpdatePeer(peerKey string, allowedIps []netip.Prefix, keepAlive time.Duration, endpoint *net.UDPAddr, preSharedKey *wgtypes.Key) error {
 	w.mu.Lock()
 	defer w.mu.Unlock()
+	if w.configurer == nil {
+		return ErrIfaceNotFound
+	}
 
-	netIPNets := prefixesToIPNets(allowedIps)
-	log.Debugf("updating interface %s peer %s, endpoint %s", w.tun.DeviceName(), peerKey, endpoint)
-	return w.configurer.UpdatePeer(peerKey, netIPNets, keepAlive, endpoint, preSharedKey)
+	log.Debugf("updating interface %s peer %s, endpoint %s, allowedIPs %v", w.tun.DeviceName(), peerKey, endpoint, allowedIps)
+
+	if endpoint != nil && w.batcher != nil {
+		if err := w.batcher.Flush(); err != nil {
+			log.Warnf("failed to flush batched operations: %v", err)
+		}
+	}
+	return w.configurer.UpdatePeer(peerKey, allowedIps, keepAlive, endpoint, preSharedKey)
 }
 
 // RemovePeer removes a Wireguard Peer from the interface iface
 func (w *WGIface) RemovePeer(peerKey string) error {
 	w.mu.Lock()
 	defer w.mu.Unlock()
+	if w.configurer == nil {
+		return ErrIfaceNotFound
+	}
 
 	log.Debugf("Removing peer %s from interface %s ", peerKey, w.tun.DeviceName())
 	return w.configurer.RemovePeer(peerKey)
 }
 
 // AddAllowedIP adds a prefix to the allowed IPs list of peer
-func (w *WGIface) AddAllowedIP(peerKey string, allowedIP string) error {
+func (w *WGIface) AddAllowedIP(peerKey string, allowedIP netip.Prefix) error {
 	w.mu.Lock()
 	defer w.mu.Unlock()
+	if w.configurer == nil {
+		return ErrIfaceNotFound
+	}
 
 	log.Debugf("Adding allowed IP to interface %s and peer %s: allowed IP %s ", w.tun.DeviceName(), peerKey, allowedIP)
+
+	if w.batcher != nil {
+		return w.batcher.AddAllowedIP(peerKey, allowedIP)
+	}
 	return w.configurer.AddAllowedIP(peerKey, allowedIP)
 }
 
 // RemoveAllowedIP removes a prefix from the allowed IPs list of peer
-func (w *WGIface) RemoveAllowedIP(peerKey string, allowedIP string) error {
+func (w *WGIface) RemoveAllowedIP(peerKey string, allowedIP netip.Prefix) error {
 	w.mu.Lock()
 	defer w.mu.Unlock()
+	if w.configurer == nil {
+		return ErrIfaceNotFound
+	}
 
 	log.Debugf("Removing allowed IP from interface %s and peer %s: allowed IP %s ", w.tun.DeviceName(), peerKey, allowedIP)
+
+	if w.batcher != nil {
+		return w.batcher.RemoveAllowedIP(peerKey, allowedIP)
+	}
 	return w.configurer.RemoveAllowedIP(peerKey, allowedIP)
 }
 
@@ -155,6 +189,12 @@ func (w *WGIface) Close() error {
 
 	var result *multierror.Error
 
+	if w.batcher != nil {
+		if err := w.batcher.Close(); err != nil {
+			result = multierror.Append(result, fmt.Errorf("failed to close WireGuard batcher: %w", err))
+		}
+	}
+
 	if err := w.wgProxyFactory.Free(); err != nil {
 		result = multierror.Append(result, fmt.Errorf("failed to free WireGuard proxy: %w", err))
 	}
@@ -185,7 +225,6 @@ func (w *WGIface) SetFilter(filter device.PacketFilter) error {
 	}
 
 	w.filter = filter
-	w.filter.SetNetwork(w.tun.WgAddress().Network)
 
 	w.tun.FilteredDevice().SetFilter(filter)
 	return nil
@@ -212,9 +251,32 @@ func (w *WGIface) GetWGDevice() *wgdevice.Device {
 	return w.tun.Device()
 }
 
-// GetStats returns the last handshake time, rx and tx bytes for the given peer
-func (w *WGIface) GetStats(peerKey string) (configurer.WGStats, error) {
-	return w.configurer.GetStats(peerKey)
+// GetStats returns the last handshake time, rx and tx bytes
+func (w *WGIface) GetStats() (map[string]configurer.WGStats, error) {
+	if w.configurer == nil {
+		return nil, ErrIfaceNotFound
+	}
+	return w.configurer.GetStats()
+}
+
+func (w *WGIface) LastActivities() map[string]monotime.Time {
+	w.mu.Lock()
+	defer w.mu.Unlock()
+
+	if w.configurer == nil {
+		return nil
+	}
+
+	return w.configurer.LastActivities()
+
+}
+
+func (w *WGIface) FullStats() (*configurer.Stats, error) {
+	if w.configurer == nil {
+		return nil, ErrIfaceNotFound
+	}
+
+	return w.configurer.FullStats()
 }
 
 func (w *WGIface) waitUntilRemoved() error {
@@ -251,14 +313,3 @@ func (w *WGIface) GetNet() *netstack.Net {
 
 	return w.tun.GetNet()
 }
-
-func prefixesToIPNets(prefixes []netip.Prefix) []net.IPNet {
-	ipNets := make([]net.IPNet, len(prefixes))
-	for i, prefix := range prefixes {
-		ipNets[i] = net.IPNet{
-			IP:   net.IP(prefix.Addr().AsSlice()),                     // Convert netip.Addr to net.IP
-			Mask: net.CIDRMask(prefix.Bits(), prefix.Addr().BitLen()), // Create subnet mask
-		}
-	}
-	return ipNets
-}

client/iface/iface_create.go

@@ -17,6 +17,7 @@ func (w *WGIface) Create() error {
 	}
 
 	w.configurer = cfgr
+	w.batcher = NewWGBatcher(cfgr)
 	return nil
 }
 

client/iface/iface_create_android.go

@@ -1,8 +1,6 @@
 package iface
 
-import (
-	"fmt"
-)
+import "fmt"
 
 // CreateOnAndroid creates a new Wireguard interface, sets a given IP and brings it up.
 // Will reuse an existing one.
@@ -15,6 +13,7 @@ func (w *WGIface) CreateOnAndroid(routes []string, dns string, searchDomains []s
 		return err
 	}
 	w.configurer = cfgr
+	w.batcher = NewWGBatcher(cfgr)
 	return nil
 }
 

client/iface/iface_create_darwin.go

@@ -29,6 +29,7 @@ func (w *WGIface) Create() error {
 			return err
 		}
 		w.configurer = cfgr
+		w.batcher = NewWGBatcher(cfgr)
 		return nil
 	}
 

client/iface/iface_new_android.go

@@ -18,7 +18,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
 
 	wgIFace := &WGIface{
 		userspaceBind:  true,
-		tun:            device.NewTunDevice(wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind, opts.MobileArgs.TunAdapter),
+		tun:            device.NewTunDevice(wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind, opts.MobileArgs.TunAdapter, opts.DisableDNS),
 		wgProxyFactory: wgproxy.NewUSPFactory(iceBind),
 	}
 	return wgIFace, nil

client/iface/mocks/filter.go

@@ -5,7 +5,6 @@
 package mocks
 
 import (
-	net "net"
 	"net/netip"
 	reflect "reflect"
 
@@ -49,32 +48,32 @@ func (mr *MockPacketFilterMockRecorder) AddUDPPacketHook(arg0, arg1, arg2, arg3
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AddUDPPacketHook", reflect.TypeOf((*MockPacketFilter)(nil).AddUDPPacketHook), arg0, arg1, arg2, arg3)
 }
 
-// DropIncoming mocks base method.
-func (m *MockPacketFilter) DropIncoming(arg0 []byte, arg1 int) bool {
+// FilterInbound mocks base method.
+func (m *MockPacketFilter) FilterInbound(arg0 []byte, arg1 int) bool {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "DropIncoming", arg0, arg1)
+	ret := m.ctrl.Call(m, "FilterInbound", arg0, arg1)
 	ret0, _ := ret[0].(bool)
 	return ret0
 }
 
-// DropIncoming indicates an expected call of DropIncoming.
-func (mr *MockPacketFilterMockRecorder) DropIncoming(arg0 interface{}, arg1 any) *gomock.Call {
+// FilterInbound indicates an expected call of FilterInbound.
+func (mr *MockPacketFilterMockRecorder) FilterInbound(arg0 interface{}, arg1 any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DropIncoming", reflect.TypeOf((*MockPacketFilter)(nil).DropIncoming), arg0, arg1)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FilterInbound", reflect.TypeOf((*MockPacketFilter)(nil).FilterInbound), arg0, arg1)
 }
 
-// DropOutgoing mocks base method.
-func (m *MockPacketFilter) DropOutgoing(arg0 []byte, arg1 int) bool {
+// FilterOutbound mocks base method.
+func (m *MockPacketFilter) FilterOutbound(arg0 []byte, arg1 int) bool {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "DropOutgoing", arg0, arg1)
+	ret := m.ctrl.Call(m, "FilterOutbound", arg0, arg1)
 	ret0, _ := ret[0].(bool)
 	return ret0
 }
 
-// DropOutgoing indicates an expected call of DropOutgoing.
-func (mr *MockPacketFilterMockRecorder) DropOutgoing(arg0 interface{}, arg1 any) *gomock.Call {
+// FilterOutbound indicates an expected call of FilterOutbound.
+func (mr *MockPacketFilterMockRecorder) FilterOutbound(arg0 interface{}, arg1 any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DropOutgoing", reflect.TypeOf((*MockPacketFilter)(nil).DropOutgoing), arg0, arg1)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FilterOutbound", reflect.TypeOf((*MockPacketFilter)(nil).FilterOutbound), arg0, arg1)
 }
 
 // RemovePacketHook mocks base method.
@@ -90,15 +89,3 @@ func (mr *MockPacketFilterMockRecorder) RemovePacketHook(arg0 interface{}) *gomo
 	mr.mock.ctrl.T.Helper()
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "RemovePacketHook", reflect.TypeOf((*MockPacketFilter)(nil).RemovePacketHook), arg0)
 }
-
-// SetNetwork mocks base method.
-func (m *MockPacketFilter) SetNetwork(arg0 *net.IPNet) {
-	m.ctrl.T.Helper()
-	m.ctrl.Call(m, "SetNetwork", arg0)
-}
-
-// SetNetwork indicates an expected call of SetNetwork.
-func (mr *MockPacketFilterMockRecorder) SetNetwork(arg0 interface{}) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SetNetwork", reflect.TypeOf((*MockPacketFilter)(nil).SetNetwork), arg0)
-}

client/iface/mocks/iface/mocks/filter.go

@@ -46,32 +46,32 @@ func (mr *MockPacketFilterMockRecorder) AddUDPPacketHook(arg0, arg1, arg2, arg3
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "AddUDPPacketHook", reflect.TypeOf((*MockPacketFilter)(nil).AddUDPPacketHook), arg0, arg1, arg2, arg3)
 }
 
-// DropIncoming mocks base method.
-func (m *MockPacketFilter) DropIncoming(arg0 []byte) bool {
+// FilterInbound mocks base method.
+func (m *MockPacketFilter) FilterInbound(arg0 []byte) bool {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "DropIncoming", arg0)
+	ret := m.ctrl.Call(m, "FilterInbound", arg0)
 	ret0, _ := ret[0].(bool)
 	return ret0
 }
 
-// DropIncoming indicates an expected call of DropIncoming.
-func (mr *MockPacketFilterMockRecorder) DropIncoming(arg0 interface{}) *gomock.Call {
+// FilterInbound indicates an expected call of FilterInbound.
+func (mr *MockPacketFilterMockRecorder) FilterInbound(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DropIncoming", reflect.TypeOf((*MockPacketFilter)(nil).DropIncoming), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FilterInbound", reflect.TypeOf((*MockPacketFilter)(nil).FilterInbound), arg0)
 }
 
-// DropOutgoing mocks base method.
-func (m *MockPacketFilter) DropOutgoing(arg0 []byte) bool {
+// FilterOutbound mocks base method.
+func (m *MockPacketFilter) FilterOutbound(arg0 []byte) bool {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "DropOutgoing", arg0)
+	ret := m.ctrl.Call(m, "FilterOutbound", arg0)
 	ret0, _ := ret[0].(bool)
 	return ret0
 }
 
-// DropOutgoing indicates an expected call of DropOutgoing.
-func (mr *MockPacketFilterMockRecorder) DropOutgoing(arg0 interface{}) *gomock.Call {
+// FilterOutbound indicates an expected call of FilterOutbound.
+func (mr *MockPacketFilterMockRecorder) FilterOutbound(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "DropOutgoing", reflect.TypeOf((*MockPacketFilter)(nil).DropOutgoing), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FilterOutbound", reflect.TypeOf((*MockPacketFilter)(nil).FilterOutbound), arg0)
 }
 
 // SetNetwork mocks base method.

client/iface/netstack/tun.go

@@ -1,8 +1,6 @@
 package netstack
 
 import (
-	"fmt"
-	"net"
 	"net/netip"
 	"os"
 	"strconv"
@@ -15,8 +13,8 @@ import (
 const EnvSkipProxy = "NB_NETSTACK_SKIP_PROXY"
 
 type NetStackTun struct { //nolint:revive
-	address       net.IP
-	dnsAddress    net.IP
+	address       netip.Addr
+	dnsAddress    netip.Addr
 	mtu           int
 	listenAddress string
 
@@ -24,7 +22,7 @@ type NetStackTun struct { //nolint:revive
 	tundev tun.Device
 }
 
-func NewNetStackTun(listenAddress string, address net.IP, dnsAddress net.IP, mtu int) *NetStackTun {
+func NewNetStackTun(listenAddress string, address netip.Addr, dnsAddress netip.Addr, mtu int) *NetStackTun {
 	return &NetStackTun{
 		address:       address,
 		dnsAddress:    dnsAddress,
@@ -34,28 +32,21 @@ func NewNetStackTun(listenAddress string, address net.IP, dnsAddress net.IP, mtu
 }
 
 func (t *NetStackTun) Create() (tun.Device, *netstack.Net, error) {
-	addr, ok := netip.AddrFromSlice(t.address)
-	if !ok {
-		return nil, nil, fmt.Errorf("convert address to netip.Addr: %v", t.address)
-	}
-
-	dnsAddr, ok := netip.AddrFromSlice(t.dnsAddress)
-	if !ok {
-		return nil, nil, fmt.Errorf("convert dns address to netip.Addr: %v", t.dnsAddress)
-	}
-
 	nsTunDev, tunNet, err := netstack.CreateNetTUN(
-		[]netip.Addr{addr.Unmap()},
-		[]netip.Addr{dnsAddr.Unmap()},
+		[]netip.Addr{t.address},
+		[]netip.Addr{t.dnsAddress},
 		t.mtu)
 	if err != nil {
 		return nil, nil, err
 	}
 	t.tundev = nsTunDev
 
-	skipProxy, err := strconv.ParseBool(os.Getenv(EnvSkipProxy))
-	if err != nil {
-		log.Errorf("failed to parse %s: %s", EnvSkipProxy, err)
+	var skipProxy bool
+	if val := os.Getenv(EnvSkipProxy); val != "" {
+		skipProxy, err = strconv.ParseBool(val)
+		if err != nil {
+			log.Errorf("failed to parse %s: %s", EnvSkipProxy, err)
+		}
 	}
 	if skipProxy {
 		return nsTunDev, tunNet, nil

client/iface/wgaddr/address.go

@@ -2,28 +2,27 @@ package wgaddr
 
 import (
 	"fmt"
-	"net"
+	"net/netip"
 )
 
 // Address WireGuard parsed address
 type Address struct {
-	IP      net.IP
-	Network *net.IPNet
+	IP      netip.Addr
+	Network netip.Prefix
 }
 
 // ParseWGAddress parse a string ("1.2.3.4/24") address to WG Address
 func ParseWGAddress(address string) (Address, error) {
-	ip, network, err := net.ParseCIDR(address)
+	prefix, err := netip.ParsePrefix(address)
 	if err != nil {
 		return Address{}, err
 	}
 	return Address{
-		IP:      ip,
-		Network: network,
+		IP:      prefix.Addr().Unmap(),
+		Network: prefix.Masked(),
 	}, nil
 }
 
 func (addr Address) String() string {
-	maskSize, _ := addr.Network.Mask.Size()
-	return fmt.Sprintf("%s/%d", addr.IP.String(), maskSize)
+	return fmt.Sprintf("%s/%d", addr.IP.String(), addr.Network.Bits())
 }

client/iface/wgproxy/bind/proxy.go

@@ -12,6 +12,7 @@ import (
 	log "github.com/sirupsen/logrus"
 
 	"github.com/netbirdio/netbird/client/iface/bind"
+	"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
 )
 
 type ProxyBind struct {
@@ -28,6 +29,17 @@ type ProxyBind struct {
 	pausedMu  sync.Mutex
 	paused    bool
 	isStarted bool
+
+	closeListener *listener.CloseListener
+}
+
+func NewProxyBind(bind *bind.ICEBind) *ProxyBind {
+	p := &ProxyBind{
+		Bind:          bind,
+		closeListener: listener.NewCloseListener(),
+	}
+
+	return p
 }
 
 // AddTurnConn adds a new connection to the bind.
@@ -54,6 +66,10 @@ func (p *ProxyBind) EndpointAddr() *net.UDPAddr {
 	}
 }
 
+func (p *ProxyBind) SetDisconnectListener(disconnected func()) {
+	p.closeListener.SetCloseListener(disconnected)
+}
+
 func (p *ProxyBind) Work() {
 	if p.remoteConn == nil {
 		return
@@ -96,6 +112,9 @@ func (p *ProxyBind) close() error {
 	if p.closed {
 		return nil
 	}
+
+	p.closeListener.SetCloseListener(nil)
+
 	p.closed = true
 
 	p.cancel()
@@ -122,6 +141,7 @@ func (p *ProxyBind) proxyToLocal(ctx context.Context) {
 			if ctx.Err() != nil {
 				return
 			}
+			p.closeListener.Notify()
 			log.Errorf("failed to read from remote conn: %s, %s", p.remoteConn.RemoteAddr(), err)
 			return
 		}

client/iface/wgproxy/ebpf/wrapper.go

@@ -11,6 +11,8 @@ import (
 	"sync"
 
 	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
 )
 
 // ProxyWrapper help to keep the remoteConn instance for net.Conn.Close function call
@@ -26,6 +28,15 @@ type ProxyWrapper struct {
 	pausedMu  sync.Mutex
 	paused    bool
 	isStarted bool
+
+	closeListener *listener.CloseListener
+}
+
+func NewProxyWrapper(WgeBPFProxy *WGEBPFProxy) *ProxyWrapper {
+	return &ProxyWrapper{
+		WgeBPFProxy:   WgeBPFProxy,
+		closeListener: listener.NewCloseListener(),
+	}
 }
 
 func (p *ProxyWrapper) AddTurnConn(ctx context.Context, endpoint *net.UDPAddr, remoteConn net.Conn) error {
@@ -43,6 +54,10 @@ func (p *ProxyWrapper) EndpointAddr() *net.UDPAddr {
 	return p.wgEndpointAddr
 }
 
+func (p *ProxyWrapper) SetDisconnectListener(disconnected func()) {
+	p.closeListener.SetCloseListener(disconnected)
+}
+
 func (p *ProxyWrapper) Work() {
 	if p.remoteConn == nil {
 		return
@@ -77,6 +92,8 @@ func (e *ProxyWrapper) CloseConn() error {
 
 	e.cancel()
 
+	e.closeListener.SetCloseListener(nil)
+
 	if err := e.remoteConn.Close(); err != nil && !errors.Is(err, net.ErrClosed) {
 		return fmt.Errorf("failed to close remote conn: %w", err)
 	}
@@ -117,6 +134,7 @@ func (p *ProxyWrapper) readFromRemote(ctx context.Context, buf []byte) (int, err
 		if ctx.Err() != nil {
 			return 0, ctx.Err()
 		}
+		p.closeListener.Notify()
 		if !errors.Is(err, io.EOF) {
 			log.Errorf("failed to read from turn conn (endpoint: :%d): %s", p.wgEndpointAddr.Port, err)
 		}

client/iface/wgproxy/factory_kernel.go

@@ -36,9 +36,8 @@ func (w *KernelFactory) GetProxy() Proxy {
 		return udpProxy.NewWGUDPProxy(w.wgPort)
 	}
 
-	return &ebpf.ProxyWrapper{
-		WgeBPFProxy: w.ebpfProxy,
-	}
+	return ebpf.NewProxyWrapper(w.ebpfProxy)
+
 }
 
 func (w *KernelFactory) Free() error {

client/iface/wgproxy/factory_usp.go

@@ -20,9 +20,7 @@ func NewUSPFactory(iceBind *bind.ICEBind) *USPFactory {
 }
 
 func (w *USPFactory) GetProxy() Proxy {
-	return &proxyBind.ProxyBind{
-		Bind: w.bind,
-	}
+	return proxyBind.NewProxyBind(w.bind)
 }
 
 func (w *USPFactory) Free() error {

client/iface/wgproxy/listener/listener.go

@@ -0,0 +1,19 @@
+package listener
+
+type CloseListener struct {
+	listener func()
+}
+
+func NewCloseListener() *CloseListener {
+	return &CloseListener{}
+}
+
+func (c *CloseListener) SetCloseListener(listener func()) {
+	c.listener = listener
+}
+
+func (c *CloseListener) Notify() {
+	if c.listener != nil {
+		c.listener()
+	}
+}

client/iface/wgproxy/proxy.go

@@ -12,4 +12,5 @@ type Proxy interface {
 	Work()                      // Work start or resume the proxy
 	Pause()                     // Pause to forward the packages from remote connection to WireGuard. The opposite way still works.
 	CloseConn() error
+	SetDisconnectListener(disconnected func())
 }

client/iface/wgproxy/proxy_test.go

@@ -98,9 +98,7 @@ func TestProxyCloseByRemoteConn(t *testing.T) {
 				t.Errorf("failed to free ebpf proxy: %s", err)
 			}
 		}()
-		proxyWrapper := &ebpf.ProxyWrapper{
-			WgeBPFProxy: ebpfProxy,
-		}
+		proxyWrapper := ebpf.NewProxyWrapper(ebpfProxy)
 
 		tests = append(tests, struct {
 			name  string

client/iface/wgproxy/udp/proxy.go

@@ -12,6 +12,7 @@ import (
 	log "github.com/sirupsen/logrus"
 
 	cerrors "github.com/netbirdio/netbird/client/errors"
+	"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
 )
 
 // WGUDPProxy proxies
@@ -28,6 +29,8 @@ type WGUDPProxy struct {
 	pausedMu  sync.Mutex
 	paused    bool
 	isStarted bool
+
+	closeListener *listener.CloseListener
 }
 
 // NewWGUDPProxy instantiate a UDP based WireGuard proxy. This is not a thread safe implementation
@@ -35,6 +38,7 @@ func NewWGUDPProxy(wgPort int) *WGUDPProxy {
 	log.Debugf("Initializing new user space proxy with port %d", wgPort)
 	p := &WGUDPProxy{
 		localWGListenPort: wgPort,
+		closeListener:     listener.NewCloseListener(),
 	}
 	return p
 }
@@ -67,6 +71,10 @@ func (p *WGUDPProxy) EndpointAddr() *net.UDPAddr {
 	return endpointUdpAddr
 }
 
+func (p *WGUDPProxy) SetDisconnectListener(disconnected func()) {
+	p.closeListener.SetCloseListener(disconnected)
+}
+
 // Work starts the proxy or resumes it if it was paused
 func (p *WGUDPProxy) Work() {
 	if p.remoteConn == nil {
@@ -111,6 +119,8 @@ func (p *WGUDPProxy) close() error {
 	if p.closed {
 		return nil
 	}
+
+	p.closeListener.SetCloseListener(nil)
 	p.closed = true
 
 	p.cancel()
@@ -141,6 +151,7 @@ func (p *WGUDPProxy) proxyToRemote(ctx context.Context) {
 			if ctx.Err() != nil {
 				return
 			}
+			p.closeListener.Notify()
 			log.Debugf("failed to read from wg interface conn: %s", err)
 			return
 		}

client/installer.nsis

@@ -24,6 +24,8 @@
 
 !define AUTOSTART_REG_KEY "Software\Microsoft\Windows\CurrentVersion\Run"
 
+!define NETBIRD_DATA_DIR "$COMMONPROGRAMDATA\Netbird"
+
 Unicode True
 
 ######################################################################
@@ -49,6 +51,10 @@ ShowInstDetails Show
 
 ######################################################################
 
+!include "MUI2.nsh"
+!include LogicLib.nsh
+!include "nsDialogs.nsh"
+
 !define MUI_ICON "${ICON}"
 !define MUI_UNICON "${ICON}"
 !define MUI_WELCOMEFINISHPAGE_BITMAP "${BANNER}"
@@ -58,9 +64,6 @@ ShowInstDetails Show
 !define MUI_FINISHPAGE_RUN_FUNCTION "LaunchLink"
 ######################################################################
 
-!include "MUI2.nsh"
-!include LogicLib.nsh
-
 !define MUI_ABORTWARNING
 !define MUI_UNABORTWARNING
 
@@ -70,13 +73,16 @@ ShowInstDetails Show
 
 !insertmacro MUI_PAGE_DIRECTORY
 
-; Custom page for autostart checkbox
 Page custom AutostartPage AutostartPageLeave
 
 !insertmacro MUI_PAGE_INSTFILES
 
 !insertmacro MUI_PAGE_FINISH
 
+!insertmacro MUI_UNPAGE_WELCOME
+
+UninstPage custom un.DeleteDataPage un.DeleteDataPageLeave
+
 !insertmacro MUI_UNPAGE_CONFIRM
 
 !insertmacro MUI_UNPAGE_INSTFILES
@@ -89,6 +95,10 @@ Page custom AutostartPage AutostartPageLeave
 Var AutostartCheckbox
 Var AutostartEnabled
 
+; Variables for uninstall data deletion option
+Var DeleteDataCheckbox
+Var DeleteDataEnabled
+
 ######################################################################
 
 ; Function to create the autostart options page
@@ -104,8 +114,8 @@ Function AutostartPage
 
   ${NSD_CreateCheckbox} 0 20u 100% 10u "Start ${APP_NAME} UI automatically when Windows starts"
   Pop $AutostartCheckbox
-  ${NSD_Check} $AutostartCheckbox ; Default to checked
-  StrCpy $AutostartEnabled "1" ; Default to enabled
+  ${NSD_Check} $AutostartCheckbox
+  StrCpy $AutostartEnabled "1"
 
   nsDialogs::Show
 FunctionEnd
@@ -115,6 +125,30 @@ Function AutostartPageLeave
   ${NSD_GetState} $AutostartCheckbox $AutostartEnabled
 FunctionEnd
 
+; Function to create the uninstall data deletion page
+Function un.DeleteDataPage
+  !insertmacro MUI_HEADER_TEXT "Uninstall Options" "Choose whether to delete ${APP_NAME} data."
+
+  nsDialogs::Create 1018
+  Pop $0
+
+  ${If} $0 == error
+    Abort
+  ${EndIf}
+
+  ${NSD_CreateCheckbox} 0 20u 100% 10u "Delete all ${APP_NAME} configuration and state data (${NETBIRD_DATA_DIR})"
+  Pop $DeleteDataCheckbox
+  ${NSD_Uncheck} $DeleteDataCheckbox
+  StrCpy $DeleteDataEnabled "0"
+
+  nsDialogs::Show
+FunctionEnd
+
+; Function to handle leaving the data deletion page
+Function un.DeleteDataPageLeave
+  ${NSD_GetState} $DeleteDataCheckbox $DeleteDataEnabled
+FunctionEnd
+
 Function GetAppFromCommand
 Exch $1
 Push $2
@@ -176,10 +210,10 @@ ${EndIf}
 FunctionEnd
 ######################################################################
 Section -MainProgram
-	${INSTALL_TYPE}
-	# SetOverwrite ifnewer
-	SetOutPath "$INSTDIR"
-	File /r "..\\dist\\netbird_windows_amd64\\"
+    ${INSTALL_TYPE}
+    # SetOverwrite ifnewer
+    SetOutPath "$INSTDIR"
+    File /r "..\\dist\\netbird_windows_amd64\\"
 SectionEnd
 ######################################################################
 
@@ -225,31 +259,58 @@ SectionEnd
 Section Uninstall
 ${INSTALL_TYPE}
 
+DetailPrint "Stopping Netbird service..."
 ExecWait '"$INSTDIR\${MAIN_APP_EXE}" service stop'
+DetailPrint "Uninstalling Netbird service..."
 ExecWait '"$INSTDIR\${MAIN_APP_EXE}" service uninstall'
 
-# kill ui client
+DetailPrint "Terminating Netbird UI process..."
 ExecWait `taskkill /im ${UI_APP_EXE}.exe /f`
 
 ; Remove autostart registry entry
+DetailPrint "Removing autostart registry entry if exists..."
 DeleteRegValue HKCU "${AUTOSTART_REG_KEY}" "${APP_NAME}"
 
+; Handle data deletion based on checkbox
+DetailPrint "Checking if user requested data deletion..."
+${If} $DeleteDataEnabled == "1"
+    DetailPrint "User opted to delete Netbird data. Removing ${NETBIRD_DATA_DIR}..."
+    ClearErrors
+    RMDir /r "${NETBIRD_DATA_DIR}"
+    IfErrors 0 +2 ; If no errors, jump over the message
+    DetailPrint "Error deleting Netbird data directory. It might be in use or already removed."
+    DetailPrint "Netbird data directory removal complete."
+${Else}
+    DetailPrint "User did not opt to delete Netbird data."
+${EndIf}
+
 # wait the service uninstall take unblock the executable
+DetailPrint "Waiting for service handle to be released..."
 Sleep 3000
+
+DetailPrint "Deleting application files..."
 Delete "$INSTDIR\${UI_APP_EXE}"
 Delete "$INSTDIR\${MAIN_APP_EXE}"
 Delete "$INSTDIR\wintun.dll"
 Delete "$INSTDIR\opengl32.dll"
+DetailPrint "Removing application directory..."
 RmDir /r "$INSTDIR"
 
+DetailPrint "Removing shortcuts..."
 SetShellVarContext all
 Delete "$DESKTOP\${APP_NAME}.lnk"
 Delete "$SMPROGRAMS\${APP_NAME}.lnk"
 
+DetailPrint "Removing registry keys..."
 DeleteRegKey ${REG_ROOT} "${REG_APP_PATH}"
 DeleteRegKey ${REG_ROOT} "${UNINSTALL_PATH}"
+DeleteRegKey ${REG_ROOT} "${UI_REG_APP_PATH}"
+
+DetailPrint "Removing application directory from PATH..."
 EnVar::SetHKLM
 EnVar::DeleteValue "path" "$INSTDIR"
+
+DetailPrint "Uninstallation finished."
 SectionEnd
 
 

client/internal/acl/manager.go

@@ -58,6 +58,11 @@ func (d *DefaultManager) ApplyFiltering(networkMap *mgmProto.NetworkMap, dnsRout
 	d.mutex.Lock()
 	defer d.mutex.Unlock()
 
+	if d.firewall == nil {
+		log.Debug("firewall manager is not supported, skipping firewall rules")
+		return
+	}
+
 	start := time.Now()
 	defer func() {
 		total := 0
@@ -69,20 +74,8 @@ func (d *DefaultManager) ApplyFiltering(networkMap *mgmProto.NetworkMap, dnsRout
 			time.Since(start), total)
 	}()
 
-	if d.firewall == nil {
-		log.Debug("firewall manager is not supported, skipping firewall rules")
-		return
-	}
-
 	d.applyPeerACLs(networkMap)
 
-	// If we got empty rules list but management did not set the networkMap.FirewallRulesIsEmpty flag,
-	// then the mgmt server is older than the client, and we need to allow all traffic for routes
-	isLegacy := len(networkMap.RoutesFirewallRules) == 0 && !networkMap.RoutesFirewallRulesIsEmpty
-	if err := d.firewall.SetLegacyManagement(isLegacy); err != nil {
-		log.Errorf("failed to set legacy management flag: %v", err)
-	}
-
 	if err := d.applyRouteACLs(networkMap.RoutesFirewallRules, dnsRouteFeatureFlag); err != nil {
 		log.Errorf("Failed to apply route ACLs: %v", err)
 	}
@@ -291,8 +284,10 @@ func (d *DefaultManager) protoRuleToFirewallRule(
 	case mgmProto.RuleDirection_IN:
 		rules, err = d.addInRules(r.PolicyID, ip, protocol, port, action, ipsetName)
 	case mgmProto.RuleDirection_OUT:
-		// TODO: Remove this soon. Outbound rules are obsolete.
-		// We only maintain this for return traffic (inbound dir) which is now handled by the stateful firewall already
+		if d.firewall.IsStateful() {
+			return "", nil, nil
+		}
+		// return traffic for outbound connections if firewall is stateless
 		rules, err = d.addOutRules(r.PolicyID, ip, protocol, port, action, ipsetName)
 	default:
 		return "", nil, fmt.Errorf("invalid direction, skipping firewall rule")
@@ -403,11 +398,15 @@ func (d *DefaultManager) squashAcceptRules(
 	//
 	// We zeroed this to notify squash function that this protocol can't be squashed.
 	addRuleToCalculationMap := func(i int, r *mgmProto.FirewallRule, protocols map[mgmProto.RuleProtocol]*protoMatch) {
-		drop := r.Action == mgmProto.RuleAction_DROP || r.Port != ""
-		if drop {
+		hasPortRestrictions := r.Action == mgmProto.RuleAction_DROP ||
+			r.Port != "" || !portInfoEmpty(r.PortInfo)
+
+		if hasPortRestrictions {
+			// Don't squash rules with port restrictions
 			protocols[r.Protocol] = &protoMatch{ips: map[string]int{}}
 			return
 		}
+
 		if _, ok := protocols[r.Protocol]; !ok {
 			protocols[r.Protocol] = &protoMatch{
 				ips: map[string]int{},

client/internal/acl/manager_test.go

@@ -1,13 +1,14 @@
 package acl
 
 import (
-	"net"
+	"net/netip"
 	"testing"
 
 	"github.com/golang/mock/gomock"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"github.com/netbirdio/netbird/client/firewall"
-	"github.com/netbirdio/netbird/client/firewall/manager"
 	"github.com/netbirdio/netbird/client/iface/wgaddr"
 	"github.com/netbirdio/netbird/client/internal/acl/mocks"
 	"github.com/netbirdio/netbird/client/internal/netflow"
@@ -42,35 +43,31 @@ func TestDefaultManager(t *testing.T) {
 	ifaceMock := mocks.NewMockIFaceMapper(ctrl)
 	ifaceMock.EXPECT().IsUserspaceBind().Return(true).AnyTimes()
 	ifaceMock.EXPECT().SetFilter(gomock.Any())
-	ip, network, err := net.ParseCIDR("172.0.0.1/32")
-	if err != nil {
-		t.Fatalf("failed to parse IP address: %v", err)
-	}
+	network := netip.MustParsePrefix("172.0.0.1/32")
 
 	ifaceMock.EXPECT().Name().Return("lo").AnyTimes()
 	ifaceMock.EXPECT().Address().Return(wgaddr.Address{
-		IP:      ip,
+		IP:      network.Addr(),
 		Network: network,
 	}).AnyTimes()
 	ifaceMock.EXPECT().GetWGDevice().Return(nil).AnyTimes()
 
-	// we receive one rule from the management so for testing purposes ignore it
 	fw, err := firewall.NewFirewall(ifaceMock, nil, flowLogger, false)
-	if err != nil {
-		t.Errorf("create firewall: %v", err)
-		return
-	}
-	defer func(fw manager.Manager) {
-		_ = fw.Close(nil)
-	}(fw)
+	require.NoError(t, err)
+	defer func() {
+		err = fw.Close(nil)
+		require.NoError(t, err)
+	}()
+
 	acl := NewDefaultManager(fw)
 
 	t.Run("apply firewall rules", func(t *testing.T) {
 		acl.ApplyFiltering(networkMap, false)
 
-		if len(acl.peerRulesPairs) != 2 {
-			t.Errorf("firewall rules not applied: %v", acl.peerRulesPairs)
-			return
+		if fw.IsStateful() {
+			assert.Equal(t, 0, len(acl.peerRulesPairs))
+		} else {
+			assert.Equal(t, 2, len(acl.peerRulesPairs))
 		}
 	})
 
@@ -94,12 +91,13 @@ func TestDefaultManager(t *testing.T) {
 
 		acl.ApplyFiltering(networkMap, false)
 
-		// we should have one old and one new rule in the existed rules
-		if len(acl.peerRulesPairs) != 2 {
-			t.Errorf("firewall rules not applied")
-			return
+		expectedRules := 2
+		if fw.IsStateful() {
+			expectedRules = 1 // only the inbound rule
 		}
 
+		assert.Equal(t, expectedRules, len(acl.peerRulesPairs))
+
 		// check that old rule was removed
 		previousCount := 0
 		for id := range acl.peerRulesPairs {
@@ -107,26 +105,86 @@ func TestDefaultManager(t *testing.T) {
 				previousCount++
 			}
 		}
-		if previousCount != 1 {
-			t.Errorf("old rule was not removed")
+
+		expectedPreviousCount := 0
+		if !fw.IsStateful() {
+			expectedPreviousCount = 1
 		}
+		assert.Equal(t, expectedPreviousCount, previousCount)
 	})
 
 	t.Run("handle default rules", func(t *testing.T) {
 		networkMap.FirewallRules = networkMap.FirewallRules[:0]
 
 		networkMap.FirewallRulesIsEmpty = true
-		if acl.ApplyFiltering(networkMap, false); len(acl.peerRulesPairs) != 0 {
-			t.Errorf("rules should be empty if FirewallRulesIsEmpty is set, got: %v", len(acl.peerRulesPairs))
-			return
-		}
+		acl.ApplyFiltering(networkMap, false)
+		assert.Equal(t, 0, len(acl.peerRulesPairs))
 
 		networkMap.FirewallRulesIsEmpty = false
 		acl.ApplyFiltering(networkMap, false)
-		if len(acl.peerRulesPairs) != 1 {
-			t.Errorf("rules should contain 1 rules if FirewallRulesIsEmpty is not set, got: %v", len(acl.peerRulesPairs))
-			return
+
+		expectedRules := 1
+		if fw.IsStateful() {
+			expectedRules = 1 // only inbound allow-all rule
 		}
+		assert.Equal(t, expectedRules, len(acl.peerRulesPairs))
+	})
+}
+
+func TestDefaultManagerStateless(t *testing.T) {
+	// stateless currently only in userspace, so we have to disable kernel
+	t.Setenv("NB_WG_KERNEL_DISABLED", "true")
+	t.Setenv("NB_DISABLE_CONNTRACK", "true")
+
+	networkMap := &mgmProto.NetworkMap{
+		FirewallRules: []*mgmProto.FirewallRule{
+			{
+				PeerIP:    "10.93.0.1",
+				Direction: mgmProto.RuleDirection_OUT,
+				Action:    mgmProto.RuleAction_ACCEPT,
+				Protocol:  mgmProto.RuleProtocol_TCP,
+				Port:      "80",
+			},
+			{
+				PeerIP:    "10.93.0.2",
+				Direction: mgmProto.RuleDirection_IN,
+				Action:    mgmProto.RuleAction_ACCEPT,
+				Protocol:  mgmProto.RuleProtocol_UDP,
+				Port:      "53",
+			},
+		},
+	}
+
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+
+	ifaceMock := mocks.NewMockIFaceMapper(ctrl)
+	ifaceMock.EXPECT().IsUserspaceBind().Return(true).AnyTimes()
+	ifaceMock.EXPECT().SetFilter(gomock.Any())
+	network := netip.MustParsePrefix("172.0.0.1/32")
+
+	ifaceMock.EXPECT().Name().Return("lo").AnyTimes()
+	ifaceMock.EXPECT().Address().Return(wgaddr.Address{
+		IP:      network.Addr(),
+		Network: network,
+	}).AnyTimes()
+	ifaceMock.EXPECT().GetWGDevice().Return(nil).AnyTimes()
+
+	fw, err := firewall.NewFirewall(ifaceMock, nil, flowLogger, false)
+	require.NoError(t, err)
+	defer func() {
+		err = fw.Close(nil)
+		require.NoError(t, err)
+	}()
+
+	acl := NewDefaultManager(fw)
+
+	t.Run("stateless firewall creates outbound rules", func(t *testing.T) {
+		acl.ApplyFiltering(networkMap, false)
+
+		// In stateless mode, we should have both inbound and outbound rules
+		assert.False(t, fw.IsStateful())
+		assert.Equal(t, 2, len(acl.peerRulesPairs))
 	})
 }
 
@@ -192,42 +250,19 @@ func TestDefaultManagerSquashRules(t *testing.T) {
 
 	manager := &DefaultManager{}
 	rules, _ := manager.squashAcceptRules(networkMap)
-	if len(rules) != 2 {
-		t.Errorf("rules should contain 2, got: %v", rules)
-		return
-	}
+	assert.Equal(t, 2, len(rules))
 
 	r := rules[0]
-	switch {
-	case r.PeerIP != "0.0.0.0":
-		t.Errorf("IP should be 0.0.0.0, got: %v", r.PeerIP)
-		return
-	case r.Direction != mgmProto.RuleDirection_IN:
-		t.Errorf("direction should be IN, got: %v", r.Direction)
-		return
-	case r.Protocol != mgmProto.RuleProtocol_ALL:
-		t.Errorf("protocol should be ALL, got: %v", r.Protocol)
-		return
-	case r.Action != mgmProto.RuleAction_ACCEPT:
-		t.Errorf("action should be ACCEPT, got: %v", r.Action)
-		return
-	}
+	assert.Equal(t, "0.0.0.0", r.PeerIP)
+	assert.Equal(t, mgmProto.RuleDirection_IN, r.Direction)
+	assert.Equal(t, mgmProto.RuleProtocol_ALL, r.Protocol)
+	assert.Equal(t, mgmProto.RuleAction_ACCEPT, r.Action)
 
 	r = rules[1]
-	switch {
-	case r.PeerIP != "0.0.0.0":
-		t.Errorf("IP should be 0.0.0.0, got: %v", r.PeerIP)
-		return
-	case r.Direction != mgmProto.RuleDirection_OUT:
-		t.Errorf("direction should be OUT, got: %v", r.Direction)
-		return
-	case r.Protocol != mgmProto.RuleProtocol_ALL:
-		t.Errorf("protocol should be ALL, got: %v", r.Protocol)
-		return
-	case r.Action != mgmProto.RuleAction_ACCEPT:
-		t.Errorf("action should be ACCEPT, got: %v", r.Action)
-		return
-	}
+	assert.Equal(t, "0.0.0.0", r.PeerIP)
+	assert.Equal(t, mgmProto.RuleDirection_OUT, r.Direction)
+	assert.Equal(t, mgmProto.RuleProtocol_ALL, r.Protocol)
+	assert.Equal(t, mgmProto.RuleAction_ACCEPT, r.Action)
 }
 
 func TestDefaultManagerSquashRulesNoAffect(t *testing.T) {
@@ -291,8 +326,435 @@ func TestDefaultManagerSquashRulesNoAffect(t *testing.T) {
 	}
 
 	manager := &DefaultManager{}
-	if rules, _ := manager.squashAcceptRules(networkMap); len(rules) != len(networkMap.FirewallRules) {
-		t.Errorf("we should get the same amount of rules as output, got %v", len(rules))
+	rules, _ := manager.squashAcceptRules(networkMap)
+	assert.Equal(t, len(networkMap.FirewallRules), len(rules))
+}
+
+func TestDefaultManagerSquashRulesWithPortRestrictions(t *testing.T) {
+	tests := []struct {
+		name          string
+		rules         []*mgmProto.FirewallRule
+		expectedCount int
+		description   string
+	}{
+		{
+			name: "should not squash rules with port ranges",
+			rules: []*mgmProto.FirewallRule{
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Range_{
+							Range: &mgmProto.PortInfo_Range{
+								Start: 8080,
+								End:   8090,
+							},
+						},
+					},
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Range_{
+							Range: &mgmProto.PortInfo_Range{
+								Start: 8080,
+								End:   8090,
+							},
+						},
+					},
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Range_{
+							Range: &mgmProto.PortInfo_Range{
+								Start: 8080,
+								End:   8090,
+							},
+						},
+					},
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Range_{
+							Range: &mgmProto.PortInfo_Range{
+								Start: 8080,
+								End:   8090,
+							},
+						},
+					},
+				},
+			},
+			expectedCount: 4,
+			description:   "Rules with port ranges should not be squashed even if they cover all peers",
+		},
+		{
+			name: "should not squash rules with specific ports",
+			rules: []*mgmProto.FirewallRule{
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Port{
+							Port: 80,
+						},
+					},
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Port{
+							Port: 80,
+						},
+					},
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Port{
+							Port: 80,
+						},
+					},
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Port{
+							Port: 80,
+						},
+					},
+				},
+			},
+			expectedCount: 4,
+			description:   "Rules with specific ports should not be squashed even if they cover all peers",
+		},
+		{
+			name: "should not squash rules with legacy port field",
+			rules: []*mgmProto.FirewallRule{
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+			},
+			expectedCount: 4,
+			description:   "Rules with legacy port field should not be squashed",
+		},
+		{
+			name: "should not squash rules with DROP action",
+			rules: []*mgmProto.FirewallRule{
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_DROP,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_DROP,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_DROP,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_DROP,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+			},
+			expectedCount: 4,
+			description:   "Rules with DROP action should not be squashed",
+		},
+		{
+			name: "should squash rules without port restrictions",
+			rules: []*mgmProto.FirewallRule{
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+			},
+			expectedCount: 1,
+			description:   "Rules without port restrictions should be squashed into a single 0.0.0.0 rule",
+		},
+		{
+			name: "mixed rules should not squash protocol with port restrictions",
+			rules: []*mgmProto.FirewallRule{
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					PortInfo: &mgmProto.PortInfo{
+						PortSelection: &mgmProto.PortInfo_Port{
+							Port: 80,
+						},
+					},
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+				},
+			},
+			expectedCount: 4,
+			description:   "TCP should not be squashed because one rule has port restrictions",
+		},
+		{
+			name: "should squash UDP but not TCP when TCP has port restrictions",
+			rules: []*mgmProto.FirewallRule{
+				// TCP rules with port restrictions - should NOT be squashed
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_TCP,
+					Port:      "443",
+				},
+				// UDP rules without port restrictions - SHOULD be squashed
+				{
+					PeerIP:    "10.93.0.1",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_UDP,
+				},
+				{
+					PeerIP:    "10.93.0.2",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_UDP,
+				},
+				{
+					PeerIP:    "10.93.0.3",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_UDP,
+				},
+				{
+					PeerIP:    "10.93.0.4",
+					Direction: mgmProto.RuleDirection_IN,
+					Action:    mgmProto.RuleAction_ACCEPT,
+					Protocol:  mgmProto.RuleProtocol_UDP,
+				},
+			},
+			expectedCount: 5, // 4 TCP rules + 1 squashed UDP rule (0.0.0.0)
+			description:   "UDP should be squashed to 0.0.0.0 rule, but TCP should remain as individual rules due to port restrictions",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			networkMap := &mgmProto.NetworkMap{
+				RemotePeers: []*mgmProto.RemotePeerConfig{
+					{AllowedIps: []string{"10.93.0.1"}},
+					{AllowedIps: []string{"10.93.0.2"}},
+					{AllowedIps: []string{"10.93.0.3"}},
+					{AllowedIps: []string{"10.93.0.4"}},
+				},
+				FirewallRules: tt.rules,
+			}
+
+			manager := &DefaultManager{}
+			rules, _ := manager.squashAcceptRules(networkMap)
+
+			assert.Equal(t, tt.expectedCount, len(rules), tt.description)
+
+			// For squashed rules, verify we get the expected 0.0.0.0 rule
+			if tt.expectedCount == 1 {
+				assert.Equal(t, "0.0.0.0", rules[0].PeerIP)
+				assert.Equal(t, mgmProto.RuleDirection_IN, rules[0].Direction)
+				assert.Equal(t, mgmProto.RuleAction_ACCEPT, rules[0].Action)
+			}
+		})
+	}
+}
+
+func TestPortInfoEmpty(t *testing.T) {
+	tests := []struct {
+		name     string
+		portInfo *mgmProto.PortInfo
+		expected bool
+	}{
+		{
+			name:     "nil PortInfo should be empty",
+			portInfo: nil,
+			expected: true,
+		},
+		{
+			name: "PortInfo with zero port should be empty",
+			portInfo: &mgmProto.PortInfo{
+				PortSelection: &mgmProto.PortInfo_Port{
+					Port: 0,
+				},
+			},
+			expected: true,
+		},
+		{
+			name: "PortInfo with valid port should not be empty",
+			portInfo: &mgmProto.PortInfo{
+				PortSelection: &mgmProto.PortInfo_Port{
+					Port: 80,
+				},
+			},
+			expected: false,
+		},
+		{
+			name: "PortInfo with nil range should be empty",
+			portInfo: &mgmProto.PortInfo{
+				PortSelection: &mgmProto.PortInfo_Range_{
+					Range: nil,
+				},
+			},
+			expected: true,
+		},
+		{
+			name: "PortInfo with zero start range should be empty",
+			portInfo: &mgmProto.PortInfo{
+				PortSelection: &mgmProto.PortInfo_Range_{
+					Range: &mgmProto.PortInfo_Range{
+						Start: 0,
+						End:   100,
+					},
+				},
+			},
+			expected: true,
+		},
+		{
+			name: "PortInfo with zero end range should be empty",
+			portInfo: &mgmProto.PortInfo{
+				PortSelection: &mgmProto.PortInfo_Range_{
+					Range: &mgmProto.PortInfo_Range{
+						Start: 80,
+						End:   0,
+					},
+				},
+			},
+			expected: true,
+		},
+		{
+			name: "PortInfo with valid range should not be empty",
+			portInfo: &mgmProto.PortInfo{
+				PortSelection: &mgmProto.PortInfo_Range_{
+					Range: &mgmProto.PortInfo_Range{
+						Start: 8080,
+						End:   8090,
+					},
+				},
+			},
+			expected: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := portInfoEmpty(tt.portInfo)
+			assert.Equal(t, tt.expected, result)
+		})
 	}
 }
 
@@ -336,33 +798,29 @@ func TestDefaultManagerEnableSSHRules(t *testing.T) {
 	ifaceMock := mocks.NewMockIFaceMapper(ctrl)
 	ifaceMock.EXPECT().IsUserspaceBind().Return(true).AnyTimes()
 	ifaceMock.EXPECT().SetFilter(gomock.Any())
-	ip, network, err := net.ParseCIDR("172.0.0.1/32")
-	if err != nil {
-		t.Fatalf("failed to parse IP address: %v", err)
-	}
+	network := netip.MustParsePrefix("172.0.0.1/32")
 
 	ifaceMock.EXPECT().Name().Return("lo").AnyTimes()
 	ifaceMock.EXPECT().Address().Return(wgaddr.Address{
-		IP:      ip,
+		IP:      network.Addr(),
 		Network: network,
 	}).AnyTimes()
 	ifaceMock.EXPECT().GetWGDevice().Return(nil).AnyTimes()
 
-	// we receive one rule from the management so for testing purposes ignore it
 	fw, err := firewall.NewFirewall(ifaceMock, nil, flowLogger, false)
-	if err != nil {
-		t.Errorf("create firewall: %v", err)
-		return
-	}
-	defer func(fw manager.Manager) {
-		_ = fw.Close(nil)
-	}(fw)
+	require.NoError(t, err)
+	defer func() {
+		err = fw.Close(nil)
+		require.NoError(t, err)
+	}()
+
 	acl := NewDefaultManager(fw)
 
 	acl.ApplyFiltering(networkMap, false)
 
-	if len(acl.peerRulesPairs) != 3 {
-		t.Errorf("expect 3 rules (last must be SSH), got: %d", len(acl.peerRulesPairs))
-		return
+	expectedRules := 3
+	if fw.IsStateful() {
+		expectedRules = 3 // 2 inbound rules + SSH rule
 	}
+	assert.Equal(t, expectedRules, len(acl.peerRulesPairs))
 }

client/internal/auth/oauth.go

@@ -64,13 +64,8 @@ func (t TokenInfo) GetTokenToUse() string {
 // and if that also fails, the authentication process is deemed unsuccessful
 //
 // On Linux distros without desktop environment support, it only tries to initialize the Device Code Flow
-func NewOAuthFlow(ctx context.Context, config *internal.Config, isLinuxDesktopClient bool) (OAuthFlow, error) {
-	if runtime.GOOS == "linux" && !isLinuxDesktopClient {
-		return authenticateWithDeviceCodeFlow(ctx, config)
-	}
-
-	// On FreeBSD we currently do not support desktop environments and offer only Device Code Flow (#2384)
-	if runtime.GOOS == "freebsd" {
+func NewOAuthFlow(ctx context.Context, config *internal.Config, isUnixDesktopClient bool) (OAuthFlow, error) {
+	if (runtime.GOOS == "linux" || runtime.GOOS == "freebsd") && !isUnixDesktopClient {
 		return authenticateWithDeviceCodeFlow(ctx, config)
 	}
 

client/internal/auth/pkce_flow.go

@@ -101,7 +101,12 @@ func (p *PKCEAuthorizationFlow) RequestAuthInfo(ctx context.Context) (AuthFlowIn
 		oauth2.SetAuthURLParam("audience", p.providerConfig.Audience),
 	}
 	if !p.providerConfig.DisablePromptLogin {
-		params = append(params, oauth2.SetAuthURLParam("prompt", "login"))
+		if p.providerConfig.LoginFlag.IsPromptLogin() {
+			params = append(params, oauth2.SetAuthURLParam("prompt", "login"))
+		}
+		if p.providerConfig.LoginFlag.IsMaxAge0Login() {
+			params = append(params, oauth2.SetAuthURLParam("max_age", "0"))
+		}
 	}
 
 	authURL := p.oAuthConfig.AuthCodeURL(state, params...)