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Exam 200-355 All Questions

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Exam 200-355 topic 1 question 171 discussion

Actual exam question from Cisco's 200-355
Question #: 171
Topic #: 1
[All 200-355 Questions]

Which two ports are used by default when configuring RADIUS for external authentication? (Choose two.)

  • A. 1813
  • B. 1846
  • C. 1645
  • D. 1812
  • E. 1845
  • F. 1646
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Suggested Answer: CD 🗳️

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enpuna
5 years, 4 months ago
I would say A and D. The port values of 1812 for authentication and 1813 for accounting are RADIUS standard ports defined by the Internet Engineering Task Force (IETF) in RFCs 2865 and 2866. However, by default, many access servers use ports 1645 for authentication requests and 1646 for accounting requests
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enpuna
5 years, 4 months ago
However, taking just authentication ports it would be 1812 and 1645, giving as correct the initial answers.
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MWas
5 years, 10 months ago
On all recent RADIUS server implementations, UDP/1812 is the authentication and authorization port, and UDP/1813 is the accouting port. However, in historic RADIUS versions, these ports were different: UDP/1645 for autentication and authorization, and UDP/1646 for accounting.
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