[maggot.se]

rconaddress - You must direct your rcon login before you can use ANY of the rcon commands!
rconpassword - You must login to your server before you can use ANY of the rcon commands!

Now you can use the rcon's below:

rcon status - Gives you info of the clients connected to server.
rcon clientkick 22 - Kicks client #22 (you need to run rcon status first to obtain the client number!).
rcon map dm/mohdm1 - Changes map to the "Souther France" map.

There are more of'em off course, but these are the most important imo. Good luck!