Configuring Firefox for Kerberos Authentication

While working at a client's location, I found that they used Kerberos authentication on their LAN. While Firefox can natively use Kerberos authentication, by default it is not turned on. Here is how you can configure Firefox:

1. Enter about:config in the URL bar
2. In the filter text box start typing in network.negotiate, to filter the results
3. Change network.negotiate-auth.delegation-uris to your domain
   
4. Change network.negotiate-auth.trusted-uris to your domain
5. Restart Firefox

That's all there is to it. Now you should be authenticating nicely across the network.