A system administrator is using a packet sniffer to troubleshoot remote authentication. The administrator detects a device trying to communicate to TCP port 49. Which of the following authentication methods is MOST likely being attempted?
A. RADIUS B. TACACS+ C. Kerberos D. LDAP
Correct Answer: B Section: Access Control and Identity Management
Explanation:
TACACS makes use of TCP port 49 by default.
Incorrect Answers:
A: RADIUS makes use of UDP only.
C, D: Kerberos and LDAP do not make use of TCP port 49.
