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With the introduction of Windows 2003 SP1 it is now possible to use RC4 encryption for Kerberos exchanges between MIT V5 Realms and Active Directory as opposed, now considered to be week, DES protocol. Despite the fact that there a several good resource on the web that provide sufficient information on how to in principal establish trust between AD and MIT V5 Kerberos Realm, most of them were written prior to Windows 2003 SP1 and do not provide information on how to utilize RC4.

This walk-through attempts to bridge this gap and provide some specifics as to how to configure the trust to use RC4 encryption.

Please, follow this link for the complete walkthrough.