Set the rcon password in the default.cfg --> set rconpassword "password".
Now you can login with rcon on the server.
Open your console (the console button is under the 'esc' button) and type --> /rconpassword password .
After you login with the rconpassword, you can use any command from the Cvar List or from the following list.

Ingame Usage: /rcon <command> <value>
Example: /rcon mute 5

COMMAND	VALUE	DESCRIPTION

banlist_addip	IP COMMENT	Write IP ban to banlist. Comment is optional.
banlist_removeip	IP	Remove all entries for this ip from banlist.
banlist_kickban	ID	Add IP to banlist and kick player.
banlist_list	-	List content of banlist.
dumpuser	ID	Informations about client.
forceteam	t = Game r = Red Team b = Blue Team s = Spectator	Force a player.
fspecall_map	-	Force all players to spectator and lock the map.
fspecall	-	Force all players to spectator.
kick	ID	Kick a client via ID.
lockmap	-	Lock the map. No one can join in TDM, FFA.
lockserver	-	Lock the Server. No one can connect.
mute	ID	Mute a client via ID(slot).
muteall	-	Mute all IDs(slots) but refs.
quit	-	Shutdown the server. Be carefull with it!
status	-	Display server informations.
sv_killserver	0/1	Shutdown the server. Be carefull with it!
unlockmap	-	Unlock the map.
unlockserver	-	Unlock the Server.
unmute	ID	Unmute a client via ID(slot).
unmuteall	-	Unmute all IDs(slots) but refs.

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