ZyXEL Communications Vantage Service Gateway VSG-1200 V2 User Manual

VSG-1200 V2 User’s Guide

Chapter 9 Authentication

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The following table describes the labels in this screen. 

Table 17   System Settings: Authentication 

No Authentication

Select this option to disable subscriber authentication. Subscribers can 

access the Internet without entering user names and passwords. 
This is the default setting.

User Agreement

Select User Agreement to direct a subscriber to an Internet service usage 

agreement page before accessing the Internet.

Redirect Page URL 

Link

Specify the URL of the user agreement page in the field provided. Click 

Code to display the HTML source code of a default sample page.

Standard User 

Agreement Page

Select this option to use the pre-configured user agreement page on the 

VSG. 

Built-in Authentication

Select this option to authenticate the subscribers using the local subscriber 

database. Then click Select option to choose a per-configured setting in 

the Current Preset option field. 

Note: When you select this option, you must also configure 

the Billing and Accounting screens.

Current preset option

This field is available when you select Built-in Authentication.
This field displays the current pre-configured setting for the built-in 

authentication. To select a predefined option, click Select option to open 

the Scenario Guide screen (refer to 

).

RADIUS

Select this option to authenticate subscribers using a remote RADIUS 

server. Then configure the following fields.

Check Local Account First Select this option to have the VSG authenticate a subscriber using the 

local user database first. If the account information is not found, then the 

VSG authenticates subscribers using the RADIUS server(s) specified. 
Clear this check box to have the VSG authenticate subscribers using the 

RADIUS server(s) only. 

Accumulation

Select this option for multiple re-login until the time allocated is used up. If 

a subscriber logs out and accesses the Internet again within the time 

period specified in the Idle Timeout field, the subscriber does not have to 

enter the user name and password again to log in. 

Time to Finish

Select this option to allow each subscriber a one-time login. If a subscriber 

logs out before the allocated time expires, the subscriber does not have to 

enter the user name and password to access the Internet again.

Primary/Secondary 

RADIUS Server

Server IP Address Enter the IP address of a RADIUS server in dotted 

decimal notation.

Authentication Port 

Specify the authentication port of the RADIUS server. The common port 

numbers are 1645 and 1812.

Accounting Port

Specify the accounting port of the RADIUS server. The common port 

numbers are 1646 and 1813.

Secret Key

Specify a password (up to 31 alphanumeric characters) as the key to be 

shared between the RADIUS server and the VSG.
The key is not sent over the network. 

Note: This key must be the same on the RADIUS server and 

the VSG.

Retry Attempts when 

Primary fail

Specify the number of times (1 to 3) the VSG resends an authentication 

request to the primary and/or secondary RADIUS servers.