Ah yes one more post
I have acutally given my real IP to script kiddies (after they mouthed off about how 1337 they were) and dared them to attack, this one was a CounterStrike server (back about 6 years ago before that Source crap) running on OpenBSD with linux emulation.
The only thing on that server that was "hardend" was the pf.conf file, and i recall that i did not have any state limiting or anything that has since been added to PF.
Needless to say i was VERY confident about it's security, and guess what? NO interuptions to gameplay whatsoever, i believe he even tried some of the "cool" cheats that CS had back then, with the server shutdown and all, NOTHING worked on it, YAY OPENBSD