Open the /conf/bnetd.conf file in your preferred editor (I’ll use edit, a text based editor): * click Start --> Run --> cmd * Ok C:\> cd C:\Program Files\pvpgn-1.8.5\conf\ C:\Program Files\pvpgn-1.8.5\conf> edit bnetd.conf After opening the file in the editor, search for the client verification and upgrades section and look for the following line: allowed_clients = all Now you must setup your own options for the clients you will allow to connect to your server: