desec

nixos-modules/services/tailscale-to-vpn.nix

@@ -0,0 +1,68 @@
+{ config, pkgs, lib, ... }:
+with lib;
+let
+  cfg = config.ragon.tailscaleToVpn;
+  ovpnConfigPath = cfg.ovpnConfigPath;
+  stateVer = config.system.stateVersion;
+in
+{
+
+  options.ragon.tailscaleToVpn = {
+    enable = mkEnableOption "tailscale-to-vpn. you need to enable nat to ve-+ able to use this";
+    ovpnConfigPath = mkOption {
+      type = types.str;
+      default = "/etc/openvpn/client.conf";
+      description = "full path to the OpenVPN client configuration file, is expected to be in /run";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    networking.bridges.br-ovpn-ts = {
+      interfaces = [ ];
+    };
+    containers.TSTVPN-openvpn = {
+      ephemeral = true;
+      enableTun = true;
+      interfaces = [ "br-ovpn-ts" ];
+      localAddress = "192.168.102.11";
+      hostAddress = "192.168.102.10";
+
+      config = { config, pkgs, ... }: {
+        system.stateVersion = stateVer;
+        networking.interfaces.br-ovpn-ts = {
+          ipv4.addresses = [ "192.168.101.1/24" ];
+        };
+        services.openvpn.servers.bridge = {
+          config = ''
+            config /host${ovpnConfigPath}
+            dev ovpn-bridge
+            dev-type tun
+          '';
+        };
+        networking.nat = {
+          externalInterface = "ovpn-bridge";
+          internalInterfaces = [ "br-ovpn-ts" ];
+        };
+      };
+      privateNetwork = true;
+      bindMounts = {
+        "/host/run" = { hostPath = "/run"; isReadOnly = true; };
+        "/run/agenix.d" = { hostPath = "/run/agenix.d"; isReadOnly = true; };
+      };
+    };
+    containers.TSTVPN-tailscale = {
+      enableTun = true;
+      hostBridge = "br-ovpn-ts";
+      localAddress = "192.168.101.2/24";
+      privateNetwork = true;
+      config = { config, pkgs, ... }: {
+        system.stateVersion = stateVer;
+        services.tailscale = {
+          enable = true;
+          useRoutingFeatures = "both";
+        };
+      };
+    };
+
+  };
+}