diff --git a/hosts/arabasta/configuration.nix b/hosts/arabasta/configuration.nix
index a3b4a85..967ebed 100644
--- a/hosts/arabasta/configuration.nix
+++ b/hosts/arabasta/configuration.nix
@@ -100,7 +100,7 @@
   services.openssh.enable = true;
 
   # Open ports in the firewall.
-  # networking.firewall.allowedTCPPorts = [ ... ];
+  networking.firewall.allowedTCPPorts = [ 37923 ];
   # networking.firewall.allowedUDPPorts = [ ... ];
   # Or disable the firewall altogether.
   # networking.firewall.enable = false;