August 2003
Intermediate to advanced
270 pages
10h 9m
English
Content preview from Kerberos: The Definitive GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Cross-realm trust
If there is already an existing Windows domain, then a cross-realm trust between that domain and the Unix-based Kerberos realm is the best option for authenticating users against a non-Microsoft KDC. A cross-realm trust is established between the Windows domain and the non-Microsoft Kerberos realm, so that users who provide their Kerberos credentials are authorized for access to resources inside of the Windows domain. In addition, since the Windows domain still exists, the administration advantages, such as centralized administration, login scripts, and more that come with establishing a Windows domain still function.
Each Windows machine in the Windows domain participating in the cross-realm trust must have the appropriate values inserted into its registry. The ksetup tool (see the sidebar The Microsoft ksetup Tool) is a command-line utility that inserts the appropriate entries into the registry. Each KDC for the non-Windows domain must be specified with the ksetup tool:
D:\>ksetup /addkdc WEDGIE.ORG freebsd.wedgie.org
If your realm has more than one KDC, the command can be repeated with each KDC’s DNS name. Define your non-Windows KDCs through ksetup on your domain controller as well. Each machine needs to be rebooted for the registry entries to take effect.
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