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ICQ & Yahoo Messenger

By jroldan ·
I try to block ICQ and Yahoo messenger from my network (closing the ports at DSL router) I think i don't identified all the ports because i see some PC conected to this IM services.
if any of you have a list with the common ports of this IM's please share with me.

Thanks

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ICQ & Yahoo Messenger

by Alpha-Male In reply to ICQ & Yahoo Messenger

These page should offer you a lot of help:

http://www.practicallynetworked.com/sharing/app_port_list.htm

http://www.chebucto.ns.ca/~rakerman/port-table.html

(delete any spaces in the URL).

Yahoo messenger is much more difficult to block since it can use many many ports - even very common ones like 21 or 80

I've heard blocking csa.yahoo.com, csb.yahoo.com
and csc.yahoo.com will stop it.

Good luck!

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