I know what this guy is talking about and want to clarify for him.
There is a new hack from 18***. It is or has been coined the "Ghost Hack". BF2CC does not pick them up and they cannot be seen through, for instance, our control panel in our internet interface. Thankfully, they do register in the pblogs.
Anyway, you cannot ban them. You cannot kick them. The hack essentially subverts everything you do, including allowing the player to ban other people (this just happened to our server Friday night). While trying to ban the guy he banned one of our members. The only way I was able to get rid of him was use the rcon command to block his name. Which, 24 hours later, he beat.
I am awaiting his return to get a pbss, if I can, but considering it is a hack from 18***, I bet it comes back black. We have banned him on at least four occassions, each time with a different GUID and IP. Worse, according to the pblogs, his MD5tool and "handshake" are fine every time he joins. This is the most sophisticated hack I've ever seen.
Has anybody else seen this? Does anyone know of any way of defeating it? dydrey has taken to entering our server virtually nightly to plague us with this hack.