nixos/adguardhome: harden systemd service (#487773)

2026-02-14 11:56:32 +00:00
parent 0e9f8bf3ff c9711424f8
commit f67e3f543b
1 changed files with 31 additions and 0 deletions
@@ -196,11 +196,42 @@ in
      serviceConfig = {
        DynamicUser = true;
        ExecStart = "${lib.getExe cfg.package} ${args}";
+        CapabilityBoundingSet = [ "CAP_NET_BIND_SERVICE" ] ++ lib.optionals cfg.allowDHCP [ "CAP_NET_RAW" ];
        AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ] ++ lib.optionals cfg.allowDHCP [ "CAP_NET_RAW" ];
        Restart = "always";
        RestartSec = 10;
        RuntimeDirectory = "AdGuardHome";
        StateDirectory = "AdGuardHome";
+        SystemCallFilter = [
+          "@system-service"
+          "~@privileged"
+          "~@resources"
+        ];
+        SystemCallArchitectures = "native";
+        DevicePolicy = "closed";
+        LockPersonality = true;
+        NoNewPrivileges = true;
+        PrivateTmp = true;
+        PrivateDevices = true;
+        PrivateMounts = true;
+        ProtectClock = true;
+        ProtectControlGroups = true;
+        ProtectHome = true;
+        ProtectHostname = true;
+        ProtectKernelLogs = true;
+        ProtectKernelModules = true;
+        ProtectKernelTunables = true;
+        ProtectSystem = "strict";
+        RemoveIPC = true;
+        RestrictAddressFamilies = [
+          "AF_NETLINK"
+          "AF_INET"
+          "AF_INET6"
+        ]
+        ++ lib.optionals cfg.allowDHCP [ "AF_PACKET" ];
+        RestrictNamespaces = true;
+        RestrictRealtime = true;
+        UMask = "0077";
      };
    };