Use wireguard default port

nixos/modules/monitoring/vpn/client.nix

@@ -42,7 +42,7 @@ in {
     endpoint = lib.mkOption {
       type = lib.types.str;
       example = lib.literalExample "vpn.monitoring.private.storage:54321";
-      default = "192.168.67.24:54321";
+      default = "192.168.67.24:51820";
       description = ''
         The address and port number of the server to establish the VPN with.
       '';

nixos/modules/monitoring/vpn/server.nix

@@ -37,7 +37,7 @@ in {
     port = lib.mkOption {
       type = lib.types.port;
       example = lib.literalExample 54321;
-      default = 54321;
+      default = 51820;
       description = ''
         The UDP port to listen on.
       '';