diff --git a/hosts/bigding/configuration.nix b/hosts/bigding/configuration.nix
index 6bae5c0..88079c1 100644
--- a/hosts/bigding/configuration.nix
+++ b/hosts/bigding/configuration.nix
@@ -25,9 +25,17 @@
     hostName = "bigding";
     interfaces.ens3.useDHCP = true;
 
-    firewall.interfaces = {
-      "tailscale0" = {
-        allowedUDPPorts = [41641];
+    firewall = {
+      allowedTCPPortRanges = [
+        {
+          from = 12500;
+          to = 12515;
+        }
+      ];
+      interfaces = {
+        "tailscale0" = {
+          allowedUDPPorts = [41641];
+        };
       };
     };
   };