UDP_IN = "20,21,53,
27015:28015" as example for port range, just add the last part no need to replace the whole thing
UDP_OUT = "20,21,53,113,123,33434
3523,
27015:28015"
here's the flood settings I use which seem to work fine on a machine with several hlds server on it
it also stopped an ongoing DOS attack (some split packet bullshit)
CONNLIMIT = "27015;5"
I guess you wouldn't have more than 5 players from the same address
PORTFLOOD = "27015;udp;5;10"
nobody should connect more than 5 connections in 10 seconds, otherwise they get blocked for 10 seconds