[Chaprnks]

Best failsafe for me:

server.cfg

Код:

rcon 0
rcon_password TAzADG3q6AH0UW0HPkfHi0YwSfhE7WsJ

This disables remote RCON (without being in-game) & you should also add punishment for XX failed logins in-game:

pawn Код:

public OnRconLoginAttempt(ip[], password[], success)
{
    if(!success) BlockIpAddress(ip, 60000);
    return 1;
}

This blocks the player from the server for 1 minute when he enters a wrong RCON password. Don't worry, it auto unblocks him after 60 seconds.