In the authentication mode of combining ssl and radius, what roles do ssl and radius play respectively?

SSL realizes the information encryption in the process of information transmission, and RADIUS realizes the authentication service for remote dial-in users.

SSL is a protocol-independent encryption scheme, which provides a secure channel between the application layer and the transport layer of network packets. Simply put, HTML or CGI is encrypted by the background server, but it is transparent to the authors of HTML and CGI.

The original purpose of RADIUS protocol is to authenticate and charge dial-up users. Later, after many improvements, a general authentication and billing protocol was formed. RADIUS is a protocol with C/S structure. Its client was originally a NAS server. Now, any computer running RADIUS client software can become a RADIUS client. The authentication mechanism of RADIUS protocol is flexible, and it can adopt many ways such as PAP, CHAP or Unix login authentication.

Therefore, SSL is used to encrypt information during information transmission, and RADIUS is used to authenticate remote dial-in users.