Hello Guys, Regarding the subject 'blocking MSN Messenger', i've posted a message in iptables mailing list last month with my experiences in the subject. I havent find a 100% way to block MSN Messenger using ONLY iptables OR using ONLY squid. I've used a mixed of them.
If somebody is interested, my post is archived here: http://marc.theaimsgroup.com/?l=netfilter&m=105844963522723&w=2 Sincerily, Leonardo Rodrigues