diff --git a/nixosConfigurations/hetzner-vpn2/headscale.nix b/nixosConfigurations/hetzner-vpn2/headscale.nix
index 7acad6c..75057c1 100644
--- a/nixosConfigurations/hetzner-vpn2/headscale.nix
+++ b/nixosConfigurations/hetzner-vpn2/headscale.nix
@@ -18,7 +18,8 @@ in
         derp = {
           server = {
             enabled = true;
-            stun_listen_addr = "0.0.0.0";
+            verify_clients = true;
+            stun_listen_addr = "0.0.0.0:44444";
             ipv4 = "78.46.242.90";
             ipv6 = "2a01:4f8:c013:65dd::1";
           };