Define the Method Lists

After identifying the authentication server and defining an associated encryption key, now it’s time to define method lists for authentication. Use the aaa authentication command to name the list and define the authentication method in the order they’re to be tried.

The aaa authentication purpose command has several options, including the following implementations:

• aaa authentication login Authentication at login

• aaa authentication ppp Authentication methods for interfaces running PPP

• aaa authentication nasi Authentication for Netware Asynchronous Services Interface

• aaa authentication arap Authentication method for AppleTalk Remote Access protocol

The book and the exams will concentrate on the login and PPP options. The configuration is similar except for the method choices, which can be overcome by using the ? to display the options while configuring.