[CoD2][Tutorial] How to make your cracked server show up in the master list

[NemanjA]

Im using CentOS.
And i get this:

-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT

[Mitch]

Im using CentOS.
And i get this:

-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT

Maybe try adding -t filter.

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

https://www.centos.org/forums/viewtopic.php?t=8995