If the ISA server is a stand-alone
system, then either a host record needs to be added to the internal DNS server or a record
needs to be added to the host file located on the IAS server.
FIGURE 9.13 Reviewing an IAS Remote Access Policy.
242 CHAPTER 9 Enabling Client Remote Access with ISA Server 2006 VPNs
Configuring ISA to Use IAS for Authentication
The first step in the process is to define a list of RADIUS servers available to ISA for
authentication. Use the following process to define one or more RADIUS servers. It is
recommended to have at least two RADIUS systems for redundancy.
1. Open the ISA Server Management Console.
2. From within the scope pane, expand Configuration, and select the General menu item.
3. Select Specify RADIUS and LDAP Servers from the Details pane.
4. On the RADIUS Servers page, click the Add button.
5. Enter the hostname or IP address of the RADIUS server in the Server Name field.
6. Enter a description in the Server Description field.
7. Click the Change button, and enter and confirm the shared secret, as shown in
Figure 9.14. This key must match the key entered on the IAS (RADIUS) server.
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