March 2001
Intermediate to advanced
576 pages
16h 42m
English
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How Transitive Trusts Work
The reason transitive trusts work is very simple: Kerberos. Referring to Figure 18.2, domains B and C both trust domain A. Each domain has at least one DC, which means it has at least one Kerberos KDC. When a child domain is added to the tree, the TGSs in the parent and child become security principals in each other's domain and create and share a session key. When a user needs access to a service in another domain, the KDCs can collaborate and build an authentication referral path from the client to the server.
Cross-Domain Authentication Example
Figure 18.7 shows the fis.local domain with two child domains: sales.fis.local and mfg.fis.local. In this example, client.sales.fis.local wants to connect to server.mfg.fis.local. ...
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