CTICoder

A random spillage of programming (and other) thoughts

Enabling Automatic NTLM Authentication in Firefox

Posted by Michael Bray on October 2, 2009

When browsing using Internet Explorer to a site on an internal network that is configured with Integrated Windows Authentication, such as http://intranet, IE will automatically attempt to use your domain credentials to log in.  It’s always pained me that Firefox didn’t do the same thing.  I thought it had something to do with some M$ hocus pocus undocumented feature magic that prevented FF from being able to do this.  SO wrong.  It’s easy to enable Firefox to do the same:

To enable this feature in Firefox, go to the “about:config” url in Firefox, and then find the configuration parameters for “network.automatic-ntlm-auth.trusted-uris”, “network.negotiate-auth.delegation-uris”, and “network.negotiate-auth.trusted-uris”.  In those values, put the URIs that you want Firefox to automatically pass authentication to.  You can either use the http:// prefix or you can leave it off, and you can specify multiple parameters by separating them with a comma.

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