I needed to block out all ICQ traffic that goes out of my network. Did a search on the Internet and found that ICQ uses two possible port numbers of 4000 and 5190. I've configured both of these ports and it seemed to do the trick BUT ... I found out that ICQ can also use HTTP, HTTPS, SOCKS4, and SOCKS5 as transport protocol and now I would like to know how to block these "extra" ICQ traffic. I 've thought of:
1. Blocking out TCP traffic on port 80/8080 with string "http://login.icq.com".
2. Blocking out ALL outgoing IP traffic destined to www.icq.com, login.icq.com (these are resolvable through DNS)
Can someone tell me how I can do the above task? expecially the 1st option. Thanks in advance for your help.
