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can reach OWA site externally but not internally

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can reach OWA site externally but not internally - 8.Dec.2006 12:03:51 PM   
blueberryKJ

 

Posts: 9
Joined: 1.Dec.2006
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I've set up OWA with Exchange 2003, and ISA 2006.  I can see the OWA page when I go the the external web site from outside my network.  I can get the log in internally using https://servername/exchange, but when I try to reach the external address while I'm in my network, I get "the requested URL could not be retrieved."  I even added it to the hosts file on my workstation.

Anybody have an idea what the problem is?
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RE: can reach OWA site externally but not internally - 8.Dec.2006 6:28:49 PM   
Jason Jones

 

Posts: 4663
Joined: 30.Jul.2002
From: United Kingdom
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This may be worth a look?

http://www.isaserver.org/tutorials/Enabling-ISA-Firewall-Forms-based-Authentication-OWA-Connections-Internal-External-Clients-Part1.html

_____________________________

Jason Jones | Forefront MVP | Silversands Ltd
My Blogs: http://blog.msedge.org.uk/ and http://blog.msfirewall.org.uk/

(in reply to blueberryKJ)
Post #: 2
RE: can reach OWA site externally but not internally - 9.Dec.2006 6:08:44 AM   
spouseele

 

Posts: 12830
Joined: 1.Jun.2001
From: Belgium
Status: offline
Hey guys,

with ISA Server 2006 it turns out that it is possible to access from an internal/perimeter host the published instance of a Web server through HTTP and HTTPS. This seems to work if the internal client access the web site as a Web Proxy, or a Firewall client or even as a SecureNAT client.

Of course, you should make sure there is an access rule in place allowing the client anonymous access to the Web listeners on the ISA external interface. Also, if ISA is doing name resolving on behalf of the client (Web Proxy and Firewall client), the used FQDN must resolve to the Web listeners on the ISA external interface.

HTH,
Stefaan

< Message edited by spouseele -- 9.Dec.2006 7:20:56 AM >

(in reply to Jason Jones)
Post #: 3
RE: can reach OWA site externally but not internally - 11.Dec.2006 10:40:58 AM   
blueberryKJ

 

Posts: 9
Joined: 1.Dec.2006
Status: offline
Thanks for your replies.

I don't have any internal networks set up on the ISA server.  The ISA server is in the DMZ of my network, a PIX being the firewall.  We just have the ISA to publish OWA.  Since I didn't set up any networks, I think it sees the traffic from my internal network as external because it doesn't recognize it.  Is that correct?

I'm having trouble logging in externally through the ISA server.  I was hoping to access the web address from my internal workstation to test the site.  Otherwise, I have to drive to the coffee shop across the street to access their wireless network. 

I think I may be a certificate problem.  In my first attempt to set up OWA, I had already created a certificate on my Exchange server, and copied it to the ISA server.  When I couldn't log in, I deleted everything and started over using Tom's step-by-step instructions.  However, when I recreated the certificate following his instructions, three appeared.  ?   Was that supposed to happen?

KJ

(in reply to blueberryKJ)
Post #: 4
RE: can reach OWA site externally but not internally - 11.Dec.2006 2:50:02 PM   
spouseele

 

Posts: 12830
Joined: 1.Jun.2001
From: Belgium
Status: offline
Hi KJ,

are you saying you are running an unihomed ISA server? If so,  I'm sorry but I have zero experience with that though I can't see why it shouldn't work from 'internal'.

HTH,
Stefaan

(in reply to blueberryKJ)
Post #: 5

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