Network Security (NETSEC) 4 Practice Test

In Kerberos, the verifier is explicitly notified that the supplicant has been authenticated.

TRUE Not specified FALSE Cannot say

Correct Answer:

FALSE

Explanation:

Kerberos authentication relies on tickets issued by the Key Distribution Center (KDC) and does not explicitly send a separate notification to the service that the user has been authenticated. The client proves its identity to the KDC and obtains a service ticket, which it then presents to the target service along with an authenticator. The service validates the ticket using its own secret key and checks the authenticator, and if everything checks out, it can trust that the client is authenticated. There isn’t a distinct message from the KDC to the verifier saying “you’ve been authenticated”; the verifier’s trust comes from successfully processing a valid ticket and authenticator.

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