RADIUS - Overview

RADIUS is a protocol for carrying authentication, authorization, and configuration information between a Network Access Server which desires to authenticate its links and a shared Authentication Server.

  • RADIUS stands for Remote Authentication Dial In User Service.

  • RADIUS is an AAA protocol for applications such as Network Access or IP Mobility

  • Works in both situations (a) Local (b) Mobile.

  • Uses PAP, CHAP or EAP protocols to authenticate users.

  • Look in text file, LDAP Servers, Database for authentication.

  • After authentication services parameters passed back to NAS.

  • Be notified when the session starts and top. This data will be used for Billing or Statistics purposes.

  • SNMP is used for remote monitoring

  • Can be used as a proxy.

Simple RADIUS Network Diagram

Radius Network Diagram