Enter about:config in the address bar and confirm that you know what you're doing:

Look for the parameter network.negotiate-auth.trusted-uris and set it to bfh.ch:

NB: On Ubuntu the default value of the aforementioned parameter ist set to https://.

Safari and OmniWeb support Kerberos authentication without any additional configuration.

Add the sites to the “Trusted Sites” list (“Tools” ⇒ “Internet Options” ⇒ Tab “Security”).