Chapter 37 AAA Server
ZyWALL USG 20/20W User’s Guide
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37.1.2 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 340 RADIUS Server Network Example
37.1.3 ASAS
ASAS (Authenex Strong Authentication System) is a RADIUS server that works
with the One-Time Password (OTP) feature. Purchase a ZyWALL OTP package in
order to use this feature. The package 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.
1 Install the ASAS server software on a computer.
2 Create user accounts on the ZyWALL and in the ASAS server.
3 Import each token’s database file (located on the included CD) into the server.
4 Assign users to OTP tokens (on the ASAS server).
5 Configure the ASAS as a RADIUS server in the ZyWALL’s Configuration > Object
> AAA Server screens.
6 Give the OTP tokens to (local or remote) users.
37.1.4 What You Can Do in this Chapter
•Use the Configuration > Object > AAA Server > Active Directory (or
LDAP) screens (Section 37.2 on page 577) to configure Active Directory or
LDAP server objects.
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