http://blogs.technet.com/tkarch/archive/2007/03/19/kerberos-demystified.aspxThere is already quite a lot of documentation and books on Kerberos out there. Here I just wanted to compile the Information I typically need myself to do my daily business. Very good in-depth Information can be found here: How the Kerberos Version 5en-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/tkarch/archive/2007/03/19/kerberos-demystified.aspx#1503226Wed, 11 Jul 2007 18:34:19 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:1503226Thomas<p>I learned something new: You can use the SetSPN tool from the resource Kit to add the IP Adress as a host. SetSPN -A HOST/ IP-Adress. Now Kerberos is used. </p>