Kerberos uses which port number?

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Study for the CPSA Port Numbers Exam. Practice with flashcards and multiple choice questions, each with hints and explanations. Get ready for your test!

Multiple Choice

Kerberos uses which port number?

Explanation:
Kerberos uses port 88 because that is the standard port assigned to the Kerberos authentication service (KDC). The KDC handles all ticket requests and authentication exchanges, and it listens on UDP 88 (with TCP 88 available when needed for reliability or larger responses). The other ports shown correspond to different services (2049 for NFS, 161 for SNMP, 512 for rexec), not Kerberos. So the Kerberos service traffic is on port 88.

Kerberos uses port 88 because that is the standard port assigned to the Kerberos authentication service (KDC). The KDC handles all ticket requests and authentication exchanges, and it listens on UDP 88 (with TCP 88 available when needed for reliability or larger responses). The other ports shown correspond to different services (2049 for NFS, 161 for SNMP, 512 for rexec), not Kerberos. So the Kerberos service traffic is on port 88.

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