To enable AAA we need the AAA new-model command but what does it really do? Many of us makes assumptions about this command. By default if we have an empty config then we will be able to use the console
I’m doing the security section of Vol1 right now and this is something I think people might have confused. Look at the following configuration: ! Scenario 1 aaa authentication login default group tacacs+ none aaa authorization exec default none !
Authentication, authorization and acounting is commonly called AAA. If you have more than a few network devices using local user accounts is not a scalable solution. The solution is to centralize the authentication either via a TACACS+ or a RADIUS