I’ve been working on some AAA configuration lately and I went through some of my older templates and realized that I didn’t want to simply use them without verifying first if I still believed that this was the best way
Authentication, authorization and accounting
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