07-02-2002 11:17 AM - edited 02-20-2020 10:08 PM
how to prevent users in a campus from using chat programs with a pix firewall. Do you know the ports of icq and irc.
07-02-2002 11:17 AM
The ports are as follows
IRC is TCP 6667
If you have a look at the following url this has the information for ICQ
http://www.icq.com/icqtour/firewall/netadmin.html
The main port number is TCP 5190
but they do use dynamic ports.
07-03-2002 02:19 AM
Some common chat ports for your reference;
tcp 6667 (irc) 6660- 6670 (the default being 6667).
tcp 6665-6669 (common IRC)
tcp 5190 (aol)
tcp 5190, dyn >=1024 (aol ICQ)
tcp/udp 5190-5193 (aol)
tcp 1863 (msn)
tcp/udp 4020 (ichat)
tcp 5000-5001 and udp 5000-5010 (Yahoo voice chat)
tcp 5050 (Yahoo messages)
tcp 5100 (Yahoo Webcams)
HTH
R/Yusuf
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