Network Security (NETSEC) 1 Practice Test

Kerberos is a network authentication protocol that relies on tickets and a trusted Key Distribution Center to enable secure, mutual authentication across a network. In Kerberos, a client proves its identity to the Key Distribution Center, which issues a time-limited ticket (and a separate Ticket-Granting Ticket) that the client can present to access a specific service. The service ticket is encrypted with the service’s secret key, and a session key is shared between the client and the service to secure communications. When the client presents the service ticket to the target server, the server verifies the ticket and authenticates the client, while the client can also confirm the server’s legitimacy, achieving mutual authentication. By using a central, trusted KDC and time-based tickets, Kerberos supports single sign-on and reduces password exposure across the network.