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block chat in mail.yahoo.com

Dear,

I use MWG 7 .Please help me, How to  block chatting when user access to mail.yahoo.com, still allow users check mail?

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1 Reply
McAfee Employee

Re: block chat in mail.yahoo.com

When you log on to yahoo chat, my local firewall started complaining that Firefox is about to connect to some yahoo hosts on strange ports:

5050.jpg

843.jpg

Doing a network trace showed the same – Firefox is connecting to these servers directly and is not willing to comply with my proxy settings – nasty.
I then blocked all traffic but to my webgateway on port 9090. Then a simply URL Filtering rule for Instant Messaging as category stops it, once being forced, the thing posts to a site known in the IM category.n your fire

POST http://98.136.112.224/ HTTP/1.1
Host: 98.136.112.224
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Proxy-Connection: keep-alive
Referer: http://l.yimg.com/a/i/us/pim/dclient/cg470/img/md5/ec5ad426f0f029dabc87ea9d422cb6b7_1.swf
Content-type: application/x-www-form-urlencoded
Content-length: 39

You can try blocking the port above in your firewall, or use a local desktop firewall to block these ports for clients.

Best,
Michael

Message was edited by: Michael Schneider on 17/08/2010 08:35:34 CEST
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