Remote Authentication Dial-In User Service

  • Protocol: UDP
  • Ports: 1812, 1813, 1645, 1646
  • Better known of the two AAA standards.
  • 3 RADIUS devices:
    1. RADIUS Server
      • Can support multiple NASs
      • Supports PAP, CHAP, and MS-CHAP (PPP)
    2. Network Access Servers (NAS)
    3. Group of systems that connect to the network
  • Microsoft: Internet Authentication Service (IAS)
  • Linux: FreeRADIUS

Resources#

https://en.wikipedia.org/wiki/RADIUS