What Is Tacacs Server?
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TACACS (Terminal Access Controller Access Control System) is an authentication protocol that is used to communicate with an authentication server to determine access rights for users logging into a network or system. It is a proprietary protocol developed by Cisco Systems and is considered to be more secure than RADIUS. TACACS is used to authenticate, authorize, and audit users logging into a network. It provides detailed information about the user, such as the user’s IP address, login time, and the device being used. TACACS is also used for accounting purposes, such as tracking which users have accessed which resources and for how long.