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→Terminal Access Controller Access Control System (TACACS)
A User Datagram Protocol (UDP) based protocol designed to provide both authentication and authorization services. Authentication functions are provided by a RADIUS server using a symmetric private key. Authorization is provided through stored user profiles.
== Terminal Access Controller Access Control System Plus (TACACS+) ==
The TACACS+ extends the basic TACACS protocol by adding authentication and authorization functionality similar to that provided by RADIUS. Unlike RADIUS, TACACS+ is Transmission Control Protocol (TCP) rather than UDP based.
