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02.22.2008 at 08:04AM PST, ID: 23184839
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6.8

ISA 2004 OWA Issue

Asked by nfarrell in MS Forefront-ISA, Secure Socket Layer (SSL) & HTTPS

Tags:

HI,

I have ISA 2004 and Exchange 2003 and can't get the OWA to work. Here is the scenario:

The front end firewall is an ASA and is allowing in HTTPS to the DMZ NIC on the ISA. The ISA has two NICs 1 on the LAN and 1 in the DMZ. OWA works from the LAN. I have installed a digital cert from a third party CA on the Exchange server and exported with private keys and imported onto the ISA server. Form based authentication is turned off on Exchange.

ISA publishing rule:

Allow from anywhere , TO the external dns A record that matches the name on the digital cert eg webmail.domain.ie

Listener: External nic, 443, cert webmail.domain.ie, OWA Form based auth, always auth: yes

Public name: request for following sites: webmail.domain.ie

3 paths are in

Bridging 443 and all users

When I browse to https://webmail.domain.ie (do not need /exchange as I have edited IIS on Exchange to accept it) from outside of the network I get the login page.

When I enter credentials I get:

Technical Information (for support personnel)
Error Code: 403 Forbidden. The server denied the specified Uniform Resource Locator (URL). Contact the server administrator. (12202)

It is driving me nuts. I have put an entry in on the host file on the ISA server for webmail.domain.ie and pointed it to the LAN IP of the Exchange server. The Internal domain is domain.local

In Exchange:

Default Website: Enable Anonymous Access
/Exchange: Basic Auth
/Exch Web: Anonymous
/Public: Basic Auth

I am getting the following in monitoring
Log type: Web Proxy (Reverse)
Status: 12210 An Internet Server API (ISAPI) filter has finished handling the request. Contact your system administrator.  
Rule:  
Source: ( 78.152.229.10:0)
Destination: ( 10.0.0.*:443)
Request: GET http://webmail.domain.ie/CookieAuth.dll?GetPic?image=logon_IE_bot.gif
Filter information: Req ID: 07a524f2  
Protocol: https
User: anonymous

and

Log type: Web Proxy (Reverse)
Status: 12202 The ISA Server denied the specified Uniform Resource Locator (URL).  
Rule: Default rule
Source: External ( 78.152.229.10:0)
Destination: ( 10.0.0.*:443)
Request: GET http://webmail.domain.ie/
Filter information: Req ID: 07a52e12  
Protocol: https
User: internaldomain\username


Any help would be grateful

Thanks
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About this solution

Zones: MS Forefront-ISA, Secure Socket Layer (SSL) & HTTPS
Tags: error code 403 forbidden. The server denied the specified URL
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Solution Provided By: Computer101
Participating Experts: 2
Solution Grade: A
 
 
 
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