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NSE 4 · Firewall authentication

Practice question 173 of 440 · easy

Which distinction is correct for ordinary RADIUS ports?

Choose the single best answer.

  1. A.UDP 1813 always carries the password request
  2. B.UDP 1812 is the accounting-only port
  3. C.TCP 443 is mandatory for every traditional RADIUS exchange
  4. D.UDP 1812 is authentication and UDP 1813 is accounting
Show the answer and explanation

✓ Correct answer

  • UDP 1812 is authentication and UDP 1813 is accounting

The usual authentication/accounting ports are 1812/1813 respectively. Legacy ports can differ, but reversing these roles or requiring HTTPS for traditional UDP RADIUS is incorrect.

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Unofficial study material, independently created and unaffiliated with Fortinet. Questions are original practice items, not recalled exam content. Published-topic coverage does not guarantee examination success. FortiOS baseline is 7.6.0; independently versioned FortiSASE and CNF references are qualified where relevant.