I am hosting multiple garrys mod servers, using the ports in the range 27000-27500.
I am experiencing a problem, where player can’t connect to any of the ports except for the 27015 one (the default one). Players cannot find the servers with the other ports (27025, 27035, 27016, etc.)in the server list and cannot retrieve the server info when attempting to join it via Steam or Garry’s Mod console.
Players are able to join once they have joined the 27015 server or if they try to join through the forums. It’s really strange as once they join the error no longer occurs.
Before anyone claims that it could be something to do with the server, even when I create a fresh vanilla server the issue occurs.
Thank you in advance.