From CyberWurx Customer Wiki

[edit] File: gamedirectory/cfg/server.cfg

server.cfg can be found inside the game directory's cfg folder.

[edit] CVAR: hostname

Usage:

hostname "My Hostname is Really Sweet!"

• Your hostname would be inside the quotation marks.

[edit] Purpose

The server's hostname would show up as the name of the server. With server browser enabled games the name configured would show up as the server's hostname. This will also show up while showing information about the server in game.