In RADIUS, authentication and authorization are connected. So, upon finding a username and accurate password, the server returns an Access-Accept response, which includes a list of attribute-value pairs that explain the parameters for the session. Classic parameters contain a type of service (shell or framed), protocol, IP address to assign the user (whether static or dynamic), access list to apply, or a static route for the NAS routing table. What will be installed on the NAS will be specified by the configuration information in the RADIUS server.