RADIUS ( Remote Access Dial In User Service ) is a protocol that stands out for offering a security mechanism, flexibility, expandability, and simplified management of access credentials to a network resource. It is an authentication and authorization protocol For access to the network, this protocol uses a client-server scheme, that is, a user with credentials to access the resource connects against a server that will be in charge of verifying the authenticity of the information, and will be the in charge of determining whether or not the user accesses the shared resource. Thanks to the use of RADIUS servers, the network administrator can control at all times the beginning and end of the authentication and authorization period of the clients, for example, we can easily expel a user who has previously logged in for whatever reason.

What is FreeRADIUS and why is it related to RADIUS servers? What is a RADIUS server and what is it for?.Roles of a RADIUS server and applications.What is a RADIUS server and what is it for?.

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