[Q3 FIX] Q3 fake clients fix

[RobsoN]

Well done, thanks for sharing this Mitch!

[Mitch]

Well done, thanks for sharing this Mitch!

Thanks. I just edit my code so people with a valid guid are always accepted.

I am now using iptables to limit the number of connect each second. (same rules as limiting getstatus)

		iptables -N CQUERY-BLOCK
iptables -A CQUERY-BLOCK -m recent --set --name cblocked-hosts -j DROP
iptables -N CQUERY-CHECK
iptables -A CQUERY-CHECK -p udp -m string ! --string "connect" --algo bm --from 32 --to 39 -j RETURN
iptables -A CQUERY-CHECK -m recent --update --name cblocked-hosts --seconds 30 --hitcount 1 -j DROP
iptables -A CQUERY-CHECK -m hashlimit --hashlimit-mode srcip --hashlimit-name cod2connect --hashlimit-above 2/second -j CQUERY-BLOCK
iptables -A INPUT -p udp --dport 27960:29000 -j CQUERY-CHECK