Question : What is "Radius" stands for ??

hello all ..
during my training in an ISP .. i heard about the Radius many times ..
is it a web server ? .. or traffic server .. ? what is it ?
what they mean exactly with the Radius ?
thank you for answering my questions :) .
3ezz

Answer : What is "Radius" stands for ??

Hi 3ezz,
Radius is an authentication server and is used for thinks like authenticating people dialing into an ISP via modems. It is also commonly used for authentication by a lot of other networking equipment such as VPN servers and wireless access points.