You can configure the 7705 SAR to use RADIUS, TACACS+, and local authentication to validate users requesting access to the network. The order in which password authentication is processed among RADIUS, TACACS+ and local passwords can be specifically configured. For example, the authentication order can be configured to process authorization via TACACS+ first, then RADIUS for authentication and accounting. Local access can be specified next in the authentication order if the RADIUS and TACACS+ servers are not operational.