Aaa Server; Chapter 37 Aaa Server; Overview; Radius Server - ZyXEL Communications UAG5100 User Manual

37.1 Overview

You can use a AAA (Authentication, Authorization, Accounting) server to provide access control to
your network. The AAA server can be a RADIUS server. Use the AAA Server screens to create and
manage objects that contain settings for using AAA servers. You use AAA server objects in
configuring ext-group-user user objects and authentication method objects (see
page 372).

37.1.1 RADIUS Server

RADIUS (Remote Authentication Dial-In User Service) authentication is a popular protocol used to
authenticate users by means of an external server instead of (or in addition to) an internal device
user database that is limited to the memory capacity of the device. In essence, RADIUS
authentication allows you to validate a large number of users from a central location.
Figure 244 RADIUS Server Network Example

37.1.2 What You Can Do in this Chapter

Use the Configuration > Object > AAA Server > RADIUS screen
configure the default external RADIUS server to use for user authentication.

37.1.3 What You Need To Know

AAA Servers Supported by the UAG
The following lists the types of authentication server the UAG supports.
• Local user database
The UAG uses the built-in local user database to authenticate administrative users logging into
the UAG's Web Configurator or network access users logging into the network through the UAG.
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AAA Server

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