RADIUS uses the client/server architecture to authenticate and grant access to users for logging into a network or network infrastructure device. The RADIUS server receives access requests from clients and verifies them. The client’s username, password, IP address, and port are included in the recommendations in a package-like style, and these details are then examined for potential matches in the database. The server will reply with an action to either allow, refuse, or challenge access to the requested service, depending on the data supplied and if it is accurate.
RADIUS offers customers that connect to and utilize a specific network centralized Authentication, Authorization, and Accounting (AAA) administration, even though it was primarily designed to replace proprietary dial-in services. This idea has evolved to cover many protocols and contemporary networks. On-premises traditional AAA administration is still available, but in recent years, cloud-based radius authentication has gained acceptance and replaced it as the preferred option for many contemporary enterprises.
