# AAA Local Authentication Servers Configuration Overview

The AAA local authentication server enables the E Series router to provide local PAP and CHAP user authentication for subscribers. The router also provides limited authorization, using the IP address, IP address pool, and operational virtual router parameters. When a subscriber logs on to the E Series router that is using local authentication, the subscriber is authenticated against user entries in a local user database; the optional parameters are assigned to subscribers after the subscriber is authenticated.

#### Related Documentation

- Creating the AAA Local Authentication Environment
- Creating AAA Local User Databases