Which two UDP port numbers may be used for server-based AAA RADIUS authentication? (Choose two.)

Last Updated: May 20, 2021
IT Exam Items Repository › Category: CCNA Security › Which two UDP port numbers may be used for server-based AAA RADIUS authentication? (Choose two.)

Which two UDP port numbers may be used for server-based AAA RADIUS authentication? (Choose two.)

  • 1812
  • 1645
  • 1813
  • 1646
  • 49

Explanation: RADIUS authentication and accounting utilize the following UDP port numbers:
UDP port 1645 or 1812 for authentication
UDP port 1646 or 1813 for accounting
TACACS+ uses TCP port 49.

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