diff --git a/system/default.nix b/system/default.nix
index 5c90c5f0..85d855b2 100644
--- a/system/default.nix
+++ b/system/default.nix
@@ -132,9 +132,7 @@
 
     firewall.allowedUDPPorts = [
       18000 # Anno 1800
-      9999 # DashPanel
-      9995 # TelemetryApp
-      9996 # TelemetryApp
+      24727 # AusweisApp2
     ];
     firewall.allowedUDPPortRanges = [];
   };