ICQ _used_ to be port 4000 TCP, but i believe this is changed now that the
clients now use AOL comm libs

Yahoo uses http (groan!) to login and then uses 1863

AOL uses either 5190 or 5050 i _think_.

My firewall script bunched all of them together, i forgot which port went
to whom \8(.

I believe the safest bet is to DENY everything, and only allow access to
the web via proxy authentication.  This way you will know what sites each
student is surfing!

HTH


On Sat, 29 Dec 2001, Chris G Haravata wrote:

> what is normally the port used by internet chats like yahoo and/or msn
> messenger?  and what is the port used by ICQ?  you see, i have a layer 3
> switch capable of blocking ports, and i've thought of blocking the port eing
> used by chatting.  hirap k'se sa college setting, hirap pagbawalan ang
> lahat, kahit, may klase, nakuuu... :)
>
> -----------------------
> Spawn - The Scourge of the Damned
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> Chris G Haravata
> IT Resource Officer-Magallanes
> Asia Pacific College (http://www.apc.edu.ph)
> #3 Humabon Place, Magallanes Subd.,
> Makati City
> Tel No 8529232 loc 402
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