Block Yahoo Messenger, AOL, MSN and ICQ using IPTABLES
If you’re a network administrator and you’re using Linux on your servers, you can stop the rest of the users from using IM applications by blocking their access to the most-used IM protocols: ICQ and AOL: # iptables -A FORWARD –dport 5190 -j DROP # iptables -A FORWARD -d login.oscar.aol.com -j DR OP MSN: #… Read More »