Accessing a Kerberized UI Firefox

To access a Kerberos-protected UI, Firefox must be configured to pass Kerberos credentials to the appropriate KDC (Key Distribution Center). Ensure you have the following prerequisites on your local machine:

• krb5.conf (Kerberos configuration file)
• Necessary keytab and principal for authentication

Follow these steps to configure Firefox:

1. Open Firefox Configuration:

   1. In the Firefox address bar, type about:config and press Enter.
   2. Accept any warning messages, if prompted.

2. Filter for Kerberos Settings:

   • In the search field, type negotiate to filter the configuration list.

3. Set Trusted URIs:

   1. Double-click on network.negotiate-auth.trusted-uris to open the dialog box.
   2. Enter the domain(s) for which Kerberos authentication must be used (e.g., .example.com).

4. Restart Firefox:

   1. After setting the trusted URIs, restart Firefox.

5. Authenticate with Kerberos:

   1. Run kinit with the necessary keytab and principal.

kinit -kt example.keytab example@EXAMPLE.COM

Once authenticated, Firefox sends the Kerberos credentials to the domain specified, allowing access to the Kerberos-protected UI.