| 4.1 |  | AAA Secure Network Access |
| 4.1.1 |  | Introduction to AAA |

| Network access and management is more important today than ever before. Unfortunately, providing access to networks and network devices can create significant security risks if done incorrectly. Unauthorized access in campus, wireless, dialup, and Internet environments creates the potential for network intruders to gain access to sensitive network equipment and services. The authentication, authorization, and accounting (AAA) architecture enables systematic access security.

The remainder of this section will focus on authentication methods. Authorization and accounting will be discussed later in this module.