RADIUS Last modified: Thursday, December 06, 2001
Short for Remote Authentication Dial-In User Service, an authentication and accounting system used by many Internet Service Providers (ISPs). When you dial in to the ISP you must enter your username and password. This information is passed to a RADIUS server, which checks that the information is correct, and then authorizes access to the ISP system. Though not an official standard, the RADIUS specification is maintained by a working group of the IETF.
Guarding the Flank With RADIUS & TACACS+ An article from Network Computing. Remote access using RADIUS and TACACS PC Week article (August 1997) on the benefits and disadvantages of TACACS and RADIUS as open protocol standards. Remote Network Access Security in an Open Systems Environment White paper by Livingston Enterprises that describes the RADIUS protocol. Web-Access Authentication Using RADIUS Detailed article (June, 1996) from Web Techniques Magazine that describes how RADIUS can be used to add new types of Web authentication.

Related Terms

AAA authentication authorization dial-up access ISP TACACS

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