What You Need To Know - ZyXEL Communications ZyWall USG20-VPN User Manual

contains server software and physical OTP tokens (PIN generators). Do the following to use OTP.
See the documentation included on the ASAS' CD for details.
Install the ASAS server software on a computer.
1
Create user accounts on the USG and in the ASAS server.
2
Import each token's database file (located on the included CD) into the server.
3
Assign users to OTP tokens (on the ASAS server).
4
Configure the ASAS as a RADIUS server in the USG's Configuration > Object > AAA Server
5
screens.
Give the OTP tokens to (local or remote) users.
6
• Use the Configuration > Object > AAA Server > Active Directory (or LDAP) screens
(Section 29.8.5 on page
• Use the Configuration > Object > AAA Server > RADIUS screen
503) to configure the default external RADIUS server to use for user authentication.

29.8.4 What You Need To Know

AAA Servers Supported by the USG
The following lists the types of authentication server the USG supports.
• Local user database
The USG uses the built-in local user database to authenticate administrative users logging into
the USG's Web Configurator or network access users logging into the network through the USG.
You can also use the local user database to authenticate VPN users.
• Directory Service (LDAP/AD)
LDAP (Lightweight Directory Access Protocol)/AD (Active Directory) is a directory service that is
both a directory and a protocol for controlling access to a network. The directory consists of a
database specialized for fast information retrieval and filtering activities. You create and store
user profile and login information on the external server.
• RADIUS
RADIUS (Remote Authentication Dial-In User Service) authentication is a popular protocol used
to authenticate users by means of an external or built-in RADIUS server. RADIUS authentication
allows you to validate a large number of users from a central location.
Directory Structure
The directory entries are arranged in a hierarchical order much like a tree structure. Normally, the
directory structure reflects the geographical or organizational boundaries. The following figure
shows a basic directory structure branching from countries to organizations to organizational units
to individuals.
Chapter 29 Object
505) to configure Active Directory or LDAP server objects.
USG20(W)-VPN Series User's Guide
504
(Section 29.8.2 on page