background image
This chapter covers the following topics that you need to master as a CCNP:
·
AAA Overview--Authentication, authorization, and accounting (AAA) describes a
global security setup for a RAS or network environment. There is no AAA per se, but
several pieces of software that comprise the way of doing business we call AAA.
·
Interface Types--This topic is needed to determine from where a user is coming into
the router. Fortunately, AAA can be used to make a decision based on the inbound
connection method. In this section of the chapter, the different connection methods are
discussed. In a nutshell, you will learn that a connection can be physical to the router,
for example, the console (CON) or AUX port, or it can be a vty session or dial-up
session. AAA is able to discern these types of connections and must be configured to
authenticate based on the connection type.
·
AAA Configuration--AAA configuration is explored for the various methods of
connection for authentication of the user being presented to the router.
·
AAA Authorization--This section discusses AAA configuration for authorizing
resource use after a user has been authenticated.
·
AAA Accounting--This section presents AAA configuration for accounting by
focusing on how much data is needed for a given environment.
·
Virtual Profiles--This section covers virtual profiles, which are the next generation
of a dialer profile. The specific user information needed for a call can be stored in the
AAA server and centrally managed.