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Network Security Firewalls
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Re: Blocking IM

Subject: Re: Blocking IM
Date: Wed, 7 Dec 2005 15:32:51 +0530
On 06/12/05 14:51 -0500, Morales, David (Seta) wrote:
We are blocking IM at the Firewall (juniper 5200) and through
Surf-control (Web Filtering product, but we are still able to connect to
Yahoo IM. Has anyone been able to do this successfully? And, does anyone
have a list of ports to block so we cannot get to this IM?

Y! IM will go through almost any port available. Blocking the login
servers, or preventing client installation via policy works a lot
better.

Devdas Bhagat

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