ZyXEL Communications 128IMH manual Using Radius Authentication, Installing a Radius Server

Prestige 128IMH ISDN Modem/ Router/Hub

12.2 Using RADIUS Authentication

Your Prestige has a built-in dial-up user list; however, the number of users that can be stored locally is limited due to memory constraints. If you have more users than what the Prestige can store locally, use an external RADIUS (Remote Authentication Dial-In User Service) server that provides authentication service for unlimited number of users.

12.2.1 Installing a RADIUS Server

To use RADIUS authentication, you need to have a UNIX or Windows NT machine on your network as the RADIUS server, as well as the RADIUS software itself.

You can obtain the RADIUS server software, along with documentation, at

http://www.livingston.com/Tech/FTP/pub-le-radius.shtml or ftp://ftp.livingston.com/pub/le/radius/

Follow the included instructions to install the software on your server.

After you install the server software, you will need to edit the dictionary file in the RADIUS configuration directory (usually /etc/raddb). Using any text editor, add the following lines to the dictionary file:

# Zyxel proprietary attributes
ATTRIBUTE	Zyxel-Callback-Option 192 integer
VALUE	Zyxel-Callback-Option None		0
VALUE	Zyxel-Callback-Option Optional		1
VALUE	Zyxel-Callback-Option Mandatory		2
# Callback	phone number source
ATTRIBUTE	Zyxel-Callback-Phone-Source	193	integer
VALUE	Zyxel-Callback-Phone-Source	Preconfigured 0
VALUE	Zyxel-Callback-Phone-Source	User	1

These changes add the support for CLID authentication, as described in the section below.

System Security 12-3