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Need assistance with ISA 2006 proxying OWA to an Exchange 2007 Client access server

Posted on 2009-07-09
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Last Modified: 2012-05-07
I have an ISA 2006 server setup in the DMZ and have published our Outlook Web Access certificate. For some reason, I'm unable to authenticate from external.

I'm using form based authentication on the internal Client access [ex2007 server] and can logon internally no problem.
When testing from external, I can reach the forms based logon page, however I am unable to authenticate.

any assistance would be appreciated.

thx - M.
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Question by:siber1
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by:florin_s
ID: 24813324
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Author Comment

by:siber1
ID: 24813358
Yes, I did go through that article. still not able to authenticate from external.
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by:florin_s
ID: 24813370
do you have some additional firewall or something that can block the connections
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Expert Comment

by:florin_s
ID: 24813468
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by:siber1
ID: 24813546
hi florin, I think this is more of an ISA configuration issue. The connectivity is there from external, as I do see the form based logon page. However, when I run a Traffic Simulator test from the ISA 2006 server, i get a "traffic denied" error:
Allowed Traffic
Denied Traffic
  - destination URL host name could not be resolved  
Rule Name: OWA Access
Rule Order: 4

 Additional information
From:
To:
Network Rule Name: None - NAT implied (Web Proxy traffic)
Network Relationship: NAT
Protocol:
Rule Application Filter:  
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florin_s earned 500 total points
ID: 24813669
I'm not so good with isa rules, maybe you need to recreate the rule, anyway here is a article that explains everything about publishing OWA with ISA:

http://www.redline-software.com/eng/support/articles/isaserver/publishing/publishing-exchange-2007-owa-exchange-activesync-rpchttp-using-2006-isa-firewall-part7.php
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