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Integrated Windows authentication is not working in IE

Posted on 2008-10-22
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Last Modified: 2012-05-05
We have an intranet.  To control access to it, we use cheap IIS integrated windows authentication.  When going to the address -- 10.18.10.100/employee_intranet -- Firefox users get a login prompt.  When IE users go to that address, they immediately receive my custom unauthorized page.  What can I do to fix this?
intranet.jpg
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Question by:mrcoulson
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by:meverest
ID: 22784588
Hi,

probably those IE users are logged in to a domain that does not have rights to the web content.

try disabling windows auth and enable only basic auth.

Cheers.
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by:mrcoulson
ID: 22785119
But doesn't basic authentication send only with clear text?  I don't know if I want our user's passwords flying around the internet like that.
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by:meverest
ID: 22791342
Yes,

generally, if you want security at all, then you will want to use ssl to encrypt your access credentials - ALL of them, even windows integrated.

Cheers.
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by:tedbilly
ID: 22793285
Use a fully qualified domain name for the website that matches the client computers domain. Then IE will recognize the site as a 'Local Intranet' site and log in automatically.

Otherwise add the site in the 'Trusted Sites' zone and set 'Automatic Login' for trusted sites.

Don't use SSL for your intranet (too much overhead) and you are correct, Basic Authentication isn't secure and adding SSL to compensate is overkill.

By the way, to setup auto login in FireFox type 'about:config' in the address bar.  Then in the Filter text box type 'NTLM' and some options will show up.  There is one you can add trusted domains to automatically log in.
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mrcoulson earned 0 total points
ID: 23102140
I just told IIS to reject all except a range of IP addresses which match our internal network and some remote sites.
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