What Is Radius Server?
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A RADIUS (Remote Authentication Dial-In User Service) server is a networking protocol used to authenticate, authorize and secure access to a network. It is typically used by Internet Service Providers (ISPs) and corporate networks to manage access to the Internet or internal networks. RADIUS servers are configured to accept authentication requests from clients and send back responses for either granting or denying access. The server acts as a broker between the user and the network, allowing for secure authentication and authorization. RADIUS servers can also be used for other purposes, such as tracking usage information, enforcing policies and managing user accounts.