Hi! What about COD4x? And CODWAW ? Its the same sport 20700 --dport serversport ?

Please help! Thank you!

Code:
iptables -A INPUT -p udp -m string --algo bm --string "BANNED_CDKEY" --sport 20700 --dport 28961 -j DROP
iptables -A INPUT -p udp -m string --algo bm --string "INVALID_CDKEY" --sport 20700 --dport 28961 -j DROP