Bay Networks Remote Annex, User Manual

Page: 74 / 90

Remote Annex Server Tools for Windows NT
®
User Guide
Chapter 4 Using Security Features
4-20
Backup Server
The host name or Internet address of the backup RADIUS server or
RADIUS Accounting server is configured using the RADIUS Server’s
dialog box:
1. From the Server Tools Options dialog box, click on the
Security tab.
2. Select the RADIUS radio button to enable the RADIUS
security server.
If you do not select this option, your security server will default
to native Windows NT
®
security.
3. From the Server Tools Options dialog box, click on the
RADIUS Servers tab.
4. Click the Backup Server down arrow to select the backup
RADIUS server or RADIUS accounting server.
If None is displayed in the Backup Server drop–down list,
see Configuring a RADIUS Server on page 2-13, for
information on creating new RADIUS servers.
Fail-over Algorithm Process
The following table describes the fail-over algorithm process for
authentication and accounting.
(continued on next page)
When or If... The...
a user is to be authenticated, RADIUS server first polled is specified
in the Server Tools Options dialog
box.
an Access-Request packet is sent
to the RADIUS server, ERPCD/ACP waits the specified
timeout value (4 seconds by default)
for the response packet.
the time expires, ERPCD/ACP retries the request