Information, Computer and Network Security Terms Glossary and Dictionary

TACACS+: Terminal Access Controller Access Control System (version 3)

Terminal Access Controller Access Control System (version 3), also known as TACACS+, provides access control for routers, network access servers and other networked computing devices via one or more centralized servers. TACACS+ is not compatible with previous versions of TACACS. Compared with the DADIUS, TACACS+ uses the TCP while RADIUS uses the UDP as the transport layer protocol. Some administrators recommend using TACACS+ because TCP is seen as a more reliable protocol. Whereas RADIUS combines authentication and authorization in a user profile, TACACS+ separates the two operations.

Related Terms

TACACS+: Terminal Access Controller Access Control System (version 3)