This article is about an authentication networking protocol. For other uses, see Radius (disambiguation).
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Remote Authentication Dial-In User Service (RADIUS) is a networking protocol that provides centralized authentication, authorization, and accounting (AAA) management for users who connect and use a network service. RADIUS was developed by Livingston Enterprises in 1991 as an access server authentication and accounting protocol. It was later brought into IEEE 802 and IETF standards.
RADIUS is a client/server protocol that runs in the application layer, and can use either TCP or UDP. Network access servers, which control access to a network, usually contain a RADIUS client component that communicates with the RADIUS server.[1] RADIUS is often the back-end of choice for 802.1X authentication.[2] A RADIUS server is usually a background process running on UNIX or Microsoft Windows.[1]
^ ab"How Does RADIUS Work?". Cisco. 2006-01-19. Retrieved 2009-04-15.
^Edwin Lyle Brown (2006). 802.1X Port-Based Authentication. Taylor & Francis. p. 17. ISBN 978-1-4200-4465-2.
In classical geometry, a radius (pl.: radii or radiuses) of a circle or sphere is any of the line segments from its center to its perimeter, and in more...
Remote Authentication Dial-In User Service (RADIUS) is a networking protocol that provides centralized authentication, authorization, and accounting (AAA)...
the radius ranges from a maximum of nearly 6,378 km (3,963 mi) (equatorial radius, denoted a) to a minimum of nearly 6,357 km (3,950 mi) (polar radius, denoted...
Group) Radius – dormant; folded into Lantern Entertainment Dimension Films – defunct; now as an in-name-only unit subsidiary Radius (stylized as RADiUS; formerly...
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differential geometry, the radius of curvature, R, is the reciprocal of the curvature. For a curve, it equals the radius of the circular arc which best...
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and the ankle joints, the crus. The forearm contains two long bones, the radius and the ulna, forming the two radioulnar joints. The interosseous membrane...
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