TACACS+ authorization profile: Periodic refresh

Periodic refresh of the authorization profile that is received from the TACACS server is supported. The authorization profile that is configured for the user on the TACACS server is sent to the Junos device after the user is successfully authenticated. The authorization profile is stored locally on the Junos device. With the periodic refresh feature, the authorization profile is periodically fetched from the TACACS server to refresh the authorization profile that is stored locally. User authorization is re-evaluated using the refreshed authorization profile.