Configure Basic Game server Settings
Most of the multiplayer game server has a configuration file. Commonly it named as server.cfg
For Call of Duty Series game servers, it is after server.cfg or files with .cfg extension.
These Files can be found in 'main' folder for non-moded servers (For moded server it will be inside the 'mods' folder )
In order to change settings simply change the values in those files and restart the game server.