A network administrator needs to implement a network authentication protocol that provides single sign-on (SSO) capabilities for users accessing various services on the corporate network. The protocol must use a trusted third-party server to issue encrypted tickets for authentication. Which of the following protocols BEST meets these requirements?
The correct answer is Kerberos. Kerberos is a network authentication protocol specifically designed to use tickets for authenticating to services. It uses a trusted third party, the Key Distribution Center (KDC), to issue a ticket-granting ticket (TGT) upon initial login. This TGT is then used to request service tickets for other resources on the network, providing a single sign-on experience without sending passwords over the network repeatedly. TACACS+ and RADIUS are AAA (Authentication, Authorization, and Accounting) protocols but do not operate on a ticket-granting system like Kerberos. WPA3 is a security protocol used to secure wireless networks, not a general-purpose authentication protocol for network services.
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What is the role of the Key Distribution Center (KDC) in Kerberos?
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How does Kerberos ensure secure communication without sending passwords over the network?
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How does single sign-on (SSO) work in the context of Kerberos?
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CompTIA A+ 220-1102 (V14)
Security
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