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Subject Topic: Proxy to Sharepoint? (Topic Closed Topic Closed)
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kents
Newbie


Joined: 12 March 2008
Posts: 2
Posted: 12 March 2008 at 9:51am  

Hi,

We want to use IIS as a reverse proxy in front of Sharepoint Services. Does
anyone have experience doing this with ISAPI_rewrite?

The Setup is really browser --> ISA --> ISS --> Sharepoint and back; where
"-->" is https. We want NTLM to work throughout.

Anyone? Bueller? Anyone?

Thanks,

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Yaroslav
Admin Group


Joined: 15 August 2002
Posts: 6520
Posted: 13 March 2008 at 6:02am  

NTLM will only work with ISAPI_Rewrite version 2 and will require that all machines will be under ActiveDirectory. Please read about possible proxy scenarios in documentation.

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Yaroslav Govorunov,
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kents
Newbie


Joined: 12 March 2008
Posts: 2
Posted: 13 March 2008 at 6:27am  

So ISAPI_Rewrite 3 is out of the question?

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Yaroslav
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Joined: 15 August 2002
Posts: 6520
Posted: 13 March 2008 at 6:49am  

ISAPI_Rewrite 3 does not support NTLM proxying.

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Yaroslav Govorunov,
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wafox
Newbie


Joined: 27 October 2009
Posts: 4
Posted: 27 October 2009 at 6:41pm  

Is this still the case?  We've purchased ISAPI_Rewrite 3 and have several rules setup for other sites and we are now looking to add almost the OP's exact same senario (Don't care if it's https or http however). 

Any advice on how to achive this?  Do we need to downgrade to Rewrite 2?

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Anton
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Joined: 30 January 2007
Location: Ukraine
Posts: 10519
Posted: 28 October 2009 at 9:27am  

Could you please outline your scenario more explicitly and show the rules you are trying to implement.

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wafox
Newbie


Joined: 27 October 2009
Posts: 4
Posted: 28 October 2009 at 11:52am  

We basically just want to forward all traffic to a specfic external URL to an interal IIS Sharepoint server.  (http:\\www.domain.ext\name1  to http:\\internal.server:port)  The issue is with the authentication that sharepoint requires.  It does not seem to pass the authentication.  Using a simple test rule like this:

RewriteProxy ^(xxx.*)$ http://internal.server:port/ [A,NC,P]

The flow goes like this:

HTTP request from External Client --> Firewall --> Main IIS Web Server --> Interal Sharepoint IIS server

User is prompted for a login but it will always fail.  Both the machines running IIS are in the AD domain.

Thanks for the replies

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Anton
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Joined: 30 January 2007
Location: Ukraine
Posts: 10519
Posted: 29 October 2009 at 5:20am  

If you are using NTLM authentication, You need to use ISAPI_Rewrite2.

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Anton
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wafox
Newbie


Joined: 27 October 2009
Posts: 4
Posted: 29 October 2009 at 12:14pm  

Can I ask, what would the rule look like for ISAPI_rewrite2 look like for doing this?

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Anton
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Joined: 30 January 2007
Location: Ukraine
Posts: 10519
Posted: 30 October 2009 at 4:32am  

The rule should look like this:

RewriteProxy /xxx.* http://internal.server:port/ [I,D]

And here are the docs: http://www.isapirewrite.com/docs/#RewriteProxy.

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Anton
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