RADIUS

Remote Authentication Dial-In User Service (RADIUS) Designed for Centralized AAA Service: RADIUS is a widely deployed protocol enabling centralized authentication, authorization, and accounting (AAA) for network access. Originally developed for dial-up remote access. However,  RADIUS is now supported by virtual private network (VPN) servers, wireless access points, authenticating Ethernet switches, Digital Subscriber Line (DSL) access, …

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