http://codebetter.com/blogs/eric.wise/archive/2006/11/16/Note-to-self_3A00_-Firefox-Windows-Authentication.aspx
To enable windows authentication on your domain.
- Open Firefox
- Navigate to the url about:config
- Locate the following preference names and put as the value the comma separated values of the address roots.
- network.automatic-ntlm-auth.trusted-uris
- network.negotiate-auth.delegation-uris
- network.negotiate-auth.trusted-uris
Your value should look something like this: localhost, server1, server2, serverX
