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Remote Authentication Dial-In User Service

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Protocol for implementing AAA. It centralizes authentication, authorization and auditing. Uses Shared Secret It:

  • Is primarily for network access
    • VPN access
    • Router, Switch, Firewall access
    • Server authentication
    • IEE 802.11 network access
  • Combines authentication and authorization Completely open protocol, that is partially encrypted and communicates over udp/1812 and udp/1813.

Protocol

  1. Requests for password
  2. Only password is encrypted in access-request packet

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