Terminal Access Controller Access-Control System Plus (Tacacs+) - Digi TX54 User Manual

User authentication

Terminal Access Controller Access-Control System Plus (TACACS+)

Your TX54 device supports Terminal Access Controller Access-Control System Plus (TACACS+), a
networking protocol that provides centralized authentication and authorization management for
users who connect to the device. With TACACS+ support, the TX54 device acts as a TACACS+ client,
which sends user credentials and connection parameters to a TACACS+ server over TCP. The TACACS+
server then authenticates the TACACS+ client requests and sends back a response message to the
device.
When you are using TACACS+ authentication, you can have both local users and TACACS+ users able to
log in to the device. To use TACACS+ authentication, you must set up a TACACS+ server that is
accessible by the TX54 device prior to configuration. The process of setting up a TACACS+ server
varies by the server environment.
This section contains the following topics:
TACACS+ user configuration
TACACS+ server failover and fallback to local authentication
Configure your TX54 device to use a TACACS+ server
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