Usunąłem go z server.cfg, oraz dopisałem coś takiego:
sv_rcon_minfailures 2 // # of failures needed before ban // Liczba nie udanych prob potrzebnych do zbanowania sv_rcon_minfailuretime 600 // amount of time (seconds) failed rcon attempts must occur within for the ban to be applied sv_rcon_banpenalty 300 // minutes to ban. 300 = 5 hours. // Ile ma trwac czasu ban. 300 minut = 5 godzin. sv_rcon_maxfailures 3 // similar to sv_rcon_minfailures, except this setting doesn't rely on sv_rcon_minfailuretime. Any IP address that fails 3 rcon authentications (during a server uptime session) will be banned for the banpenalty.