Firefox integrated NTLM authentication

Firefox, Mozilla, and friends CAN now do integrated NTLM Authentication. You need to set the following 4 preferences:

network.automatic-ntlm-auth.allow-proxies true

network.automatic-ntlm-auth.trusted-uris proxy1 (where proxy1 = the name of your proxy), proxy2, domain FQDN, etc

network.negotiate-auth.trusted-uris proxy1, proxy2, domain FQDN, etc

network.negotiate-auth.delegation-uris proxy1, proxy2, domain FQDN, etc

Here is how:
1. Type about:config in URL bar
2. In search bar type any part of the item you are looking for (ntlm or Negotiate)
3. Click on the item you want to change. (Or double click if it is a boolean, to change it)
4. Change the value in the pop up.
5. Click OK
6. Presto!