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Network Security Focus-Microsoft
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How to deploy Microsoft OWA without using ISA?

Subject: How to deploy Microsoft OWA without using ISA?
Date: Thu, 4 Jan 2007 16:40:46 -0500
We have been using OWA2000 for a few years now.  The front end server sits in a 
DMZ and communicates to the backend server with a very painfully developed 
access list.  In addition, you need two factor authentication to even get to 
the login screen.

I recently attended a Microsoft presentation of the new architecture of Outlook 
2007.  The one thing that stuck out to me was that you can no longer put the 
front end server in a DMZ.  It has to be on the internal network.  The 
recommended way to publish OWA is ISA2006.

I don't currently have ISA2006 anywhere in my network and we are a very heavy 
Cisco shop.  What options do I have for publishing OWA?  Purchasing ISA2006 for 
this one application seems a bit overkill.

Any help or guidance would be appreciated.  Google turns up lots of hits for 
doing this with ISA but doesn't give any alternative.

Randy Hall - Sr. Security Engineer - CISSP 
The Virginian Pilot - (757) 446-2754



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