Firefox, my browser of choice, doesn’t support NTLM “out of the box”
What that means is, if you visit a site on your domain (for example http://intranet) that you should have access to, you’re presented with a username and password box.
What you need to do, is explicitly set the allowed URIs that Firefox is allowed to pass your credentials to. Since I only use this on a couple of sites, it’s not really a problem.
Here’s how to do it:
Step One
Load about:config in Firefox (more information on about:config)
Click “I’ll be careful, I promise!” (and make sure you are careful, you did promise….)
Step Two
Locate network.automatic-ntlm-auth.trusted-uris
The easiest way to do this is to type “network.automatic” into the filter box. Then, only two entries show up.
Double click network.automatic-ntlm-auth.trusted-uris
Step Three
Enter your url into the box.
In my case, it’s http://intranet
That’s it! Firefox will now allow NTLM on that url!