Open the /etc/bnetd.conf file in your preferred editor (I’ll use vi or vim, a text based editor): [root@mybox]# cd /etc/ [root@mybox]# vi 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: Image:NoteIcon.png NoteSince this guide if for WarCraft III, I'll configure it to only allow WarCraft III clients. allowed_clients = war3,w3xp