Remote Authentication Dial-In User Service
Remote Authentication Dial-In User Service (RADIUS) is client/server protocol software that enables
remote access servers to communicate with a central server to authenticate dial-in users and
authorize their access to the requested system or service. RADIUS allows a company to maintain user
profiles in a central database which all remote servers can share. It provides better security, allowing
a company to set up a policy that can be applied at a single administered network point. Having a
central service also means that it's easier to track usage for billing and for keeping network statistics.
Created by Livingston, RADIUS is a de facto industry standard.
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