I don't think it's a program they just login on the server web page an ban people that way instead of login from the game of rcon which indeed was blocked but doesn't block for the web.. sorta hard to explain but all i can say is they ban use with rcon through the web instead of through the game..
I guess something sorta like this
http://www.allworldsoft.com/software/17 ... badmin.htm
all i know is i still get kicked even when running the multircon.
String command i use is C:\Users\XXX\Documents\Rcon\multircon.exe -x -i -b 10 09AZaz -d 1 Server Port