diff --git a/system/ritchie/ritchie.nix b/system/ritchie/ritchie.nix
index 260041a..02403ee 100644
--- a/system/ritchie/ritchie.nix
+++ b/system/ritchie/ritchie.nix
@@ -20,8 +20,13 @@ in
       ../shared/filesystem.nix
     ];
 
-  networking.hostName = "ritchie";
-
+  networking = {
+    hostName = "ritchie";
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [ 2222 ];
+    };
+  };
   users.users.foxsoft = {
     isNormalUser = true;
     extraGroups = [
diff --git a/system/shared/shared-configuration.nix b/system/shared/shared-configuration.nix
index 7ab47c1..cb8dea6 100644
--- a/system/shared/shared-configuration.nix
+++ b/system/shared/shared-configuration.nix
@@ -61,6 +61,7 @@
 
   services.openssh = {
     enable = true;
+    ports = [ 2222 ];
     settings.PasswordAuthentication = false;
   };