Complete Protocol dictionary, glossary and reference

RADIUS: Remote Authentication Dial In User Service

Remote Authentication Dial In User Service (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 uses UDP as the transport protocol. RADIUS also carries accounting information between a Network Access Server and a shared Accounting Server.

Standard Organization

IETF

Related Document

RFC 2865 and 2866