[isalist] Re: Blocking MSN Messenger (HTTP)
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxx>
- To: <isalist@xxxxxxxxxxxxx>
- Date: Thu, 14 Sep 2006 10:33:46 -0500
http://www.ISAserver.org
-------------------------------------------------------
Hi Raj,
User Agent headers change over time. That's why my articles always
emphasize that fact that you need to do packet traces to determine the
User Agent that you want to block.
Thomas W Shinder, M.D.
Site: www.isaserver.org
Blog: http://blogs.isaserver.org/shinder/
Book: http://tinyurl.com/3xqb7
MVP -- ISA Firewalls
> -----Original Message-----
> From: isalist-bounce@xxxxxxxxxxxxx
> [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Periyasamy, Raj
> Sent: Thursday, September 14, 2006 9:59 AM
> To: isalist@xxxxxxxxxxxxx
> Subject: [isalist] Blocking MSN Messenger (HTTP)
>
> http://www.ISAserver.org
> -------------------------------------------------------
>
> I was trying to create a filter to block MSN Messenger using HTTP
> through ISA Server 2004 Ent. I followed Tom's article,
> http://www.isaserver.org/tutorials/ISA-Firewall-Quick-Tip-Bloc
> king-MSN-M
> essenger-Access-Enabling-Access-Some-Users.html
>
> However, this did not seem to help. I had to create filter with
> different header information in order to block the MSN
> Messenger. Now my
> filter looks as below and messenger is getting blocked,
>
> Search in: Response Headers
> HTTP Header: Content-type:
> Pattern: application/x-msn-messenger
>
> Also, doping some Google search I fond the following link
> http://www.hypothetic.org/docs/msn/general/http_examples.php,
> which refers to "User-Agent: MSMSGS", whereas Tom's articles refers to
> "User-Agent: MSN Messenger". My question is, what is the difference
> here, and why is Toms article not working in my environment ?
>
>
> Regards,
> Raj Periyasamy
> MCSE(Messaging), CCNA
>
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