I have an IIS server (Server 2008R2/IIS 7.5) configured for kerberos authentication. The kerberos authentication works from clients on Windows (IE and Opera both tested), but when I access the site from any browser on a Mac (Safari, Chrome, or Firefox), I do not receive a username/password prompt.
When I visit other server also set up for kerberos authentication (set up and maintained by other people) from Mac, I do receive the prompt for a username/password.
Why would my server not request credentials for authentication? Is there a setting I should be checking?