Click
the OK button when complete.
8. The default Port and Time-out values are appropriate in most scenarios and can be
left as default.
9. Enable the Always Use Message Authenticator check box. Click the OK button to
close the Add RADIUS Servers window.
10. Click the OK button to close the RADIUS servers window, and then click the Apply
button to save and apply the new changes.
After the list of RADIUS servers has been defined, the VPN configuration can be modified
to use RADIUS for authentication. The following process can be used to set the IAS server
VPN users will use for authentication:
1. Open the ISA Server Management Console.
2. Select the Virtual Private Networks (VPN) menu item from the Scope pane.
3. Make sure the VPN Clients tab is active in the Details pane, and then select Specify
RADIUS Configuration from the Tasks pane.
4. Enable the Use RADIUS for Authentication check box.
5. Click the RADIUS Servers button.
6. From the list of RADIUS servers shown in Figure 9.15, select the RADIUS server
created in the previous steps and then press the OK button.
FIGURE 9.14 Defining a RADIUS server shared key in ISA.
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