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What (who) is radius - definition

AUTHENTICATION NETWORKING PROTOCOL

Aaa server; RadiusServer; Radius server; Remote Authentication Dial In User Service; TinyPEAP; Remote Authentication Dial-In User Service; AAA server; List of RADIUS standards; Radius (software); Vendor-specific attributes

radius

SEGMENT IN A CIRCLE OR SPHERE FROM ITS CENTER TO ITS PERIMETER OR SURFACE AND ITS LENGTH

Radii; Radius (geometry); Curve radii

n.

1) a cruising radius

2) in, within a radius of (within a radius of fifty miles)

radius

SEGMENT IN A CIRCLE OR SPHERE FROM ITS CENTER TO ITS PERIMETER OR SURFACE AND ITS LENGTH

Radii; Radius (geometry); Curve radii

(radii)

1.

The radius around a particular point is the distance from it in any direction.

Nigel has searched for work in a ten-mile radius around his home.

N-SING: with supp

2.

The radius of a circle is the distance from its centre to its outside edge.

He indicated a semicircle with a radius of about thirty miles.

N-COUNT

RADIUS

SEGMENT IN A CIRCLE OR SPHERE FROM ITS CENTER TO ITS PERIMETER OR SURFACE AND ITS LENGTH

Radii; Radius (geometry); Curve radii

Remote Authentication Dial-In User Service

Wikipedia

RADIUS

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. RADIUS is often the back-end of choice for 802.1X authentication. A RADIUS server is usually a background process running on UNIX or Microsoft Windows.

https://en.wikipedia.org/wiki/RADIUS

Examples of use of radius

1. "The grenades kill everything within a radius of eight meters, injure anyone within a radius of 16.

2. Local authorities immediately banned the transport of birds within a 3km radius of the farm, and placed a 13km radius zone under observation.

3. A 3km radius protection zone will be set up around the site where an infected swan was found in Scotland, encircled by a 10km radius surveillance zone.

4. The explosion incinerated everything within a 20m radius.

5. Unauthorised protests within a 1km radius of parliament are banned.