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Home/Cybersecurity Glossary/Remote Authentication Dial-In User Service (RADIUS)

Remote Authentication Dial-In User Service (RADIUS)

Remote Authentication Dial-In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for users who connect and use a network service. RADIUS is a client/server protocol that runs in the application layer and can use either TCP or UDP.

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