Radius

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RADIUS is Remote Authentication Dial In User Service, defined in RFC 2865. It's used for much more than dial-in authentication - it is also seen in applications like EAP and PAM as well as Apache authentication modules. RADIUS also has accounting services, defined in RFC 2866.

Identification

Ports

RADIUS runs on UDP ports 1812 and 1813. It used to be on UDP 1645.

Clients/Servers

See also