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.