[CentOS] Hacking Issue

Mon Sep 26 11:08:49 UTC 2011
Jorge Fábregas <jorge.fabregas at gmail.com>

On 09/26/2011 07:02 AM, Jennifer Botten wrote:
> -A INPUT -i eth0 -d 209.61.231.42 -p udp -j DROP

This needs to be:

-A OUTPUT -i eth0 -d 209.61.231.42 -p udp -j DROP

...if you want to drop packets initiated from your system to that
ip...which doesn't make any sense if you're dropping all the incoming
connection from that ip.

 On why are you still getting packets from that ip... perhaps there's
also TCP traffic?  If you want to completely drop packets from that ip
simply remove the protocol argument like this:

-A INPUT -i eth0 -s 209.61.231.42 -j DROP

HTH,
Jorge