Remote Authentication Dial‐In User Service (RADIUS)

A network protocol that handles AAA management which allows for authentication, authorization, and accounting (auditing).

Remote Authentication Dial‐In User Service (RADIUS) refers to a network protocol that handles AAA management which allows for authentication, authorization, and accounting (auditing). Used in 802.11 WLANs as the authentication server in an 802.1X/EAP implementation.