diff --git a/config/omen.nix b/config/omen.nix
index a62b6e6..94d94b1 100644
--- a/config/omen.nix
+++ b/config/omen.nix
@@ -18,6 +18,7 @@
   # Networking
   networking.hostName = "randomctf";
   networking.nameservers = [ "192.168.100.1" "8.8.8.8" "8.8.4.4" ];
+  networking.firewall.allowedTCPPorts = [ 22 24800 ];
 
   # Temporary fix for service failure.
   systemd.services.NetworkManager-wait-online.enable = lib.mkForce false;