Network Security Principles and Practices

Setting up Authentication

Setting up authentication is a four-step process. We will restrict this discussion to how routers are set up to do authentication. We will leave setting up switches and PIXes for authentication for the “Case Studies” section. Most other devices can be set up for authentication following similar principles.

Enabling AAA

The first step in using authentication on a device is to enable AAA. You do this using the following command on a router:

Router(config)#aaa new-model
						

Setting up a Local Database of User Authentication Parameters or Setting up Access To a Configured RADIUS or TACACS+ Server

In this step, the username/devicename and password are either defined on the local router or defined on an AAA server accessible ...