Kerberos Authentication for Multi-organization Cross-Realm Kerberos Authentication User sent request to local Authentication Server Local AS shares cross-realm.

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Kerberos Authentication for Multi-organization

Cross-Realm Kerberos Authentication User sent request to local Authentication Server Local AS shares cross-realm key to verifier's authentication server(VAS) Local AS sent TGT to client User request a session key with his/her TGT VAS Lookup the cross-realm key The VAS grant client with the session key

Authorization with Kerberos Kerberos does not itself provide authorization, but V5 Kerberos passes authorization information generated by other services. In this manner, Kerberos can be used as a base for building separate distributed authorization services. (implement in the future)

Authorization structure