When a client wants to access a network service that requires Kerberos authentication, it requests a Ticket Granting Ticket (TGT) from the KDC by authenticating with its own principal (typically associated with a user). The TGT allows the client to request Service Tickets for specific service principals. The client then presents the Service Ticket to the service principal as proof of its identity, and the service principal validates the ticket and grants access to the requested service.
Service principals are essential for securing communication in a Kerberos environment because they allow clients and services to establish trust and verify each other's identities. Each service principal has a unique name and is associated with a specific network service, ensuring that only authorized clients can access the corresponding service.
For example, if you have a web server named "example.com," it would have its own service principal called "HTTP/example.com@REALM" (where REALM is the Kerberos realm name). Clients authenticating to the web server would obtain Service Tickets for this specific service principal to gain access to the web server's resources securely.
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--The access zone and the Active Directory provider must reference the same groupnet.
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