best way to block msn and yahoo messenger on pix firewall

From: Kaiser Anwar (Kaiseranwar@sbcglobal.net)
Date: Sat Apr 30 2005 - 15:18:04 GMT-3


Hi,

 

Some of these messengers use port 80, if they can't find the designated
port. Is there another way of blocking these messengers on the pix firewall?

 

Thx

Kaiser A



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