Installing the Internet Authentication Service (IAS) for Active
Directory RADIUS Support
IAS can be installed on a member server or domain controller running on Windows 2000
Server or Windows Server 2003. The following procedure can be used to set up IAS on
both a Windows 2000 server and a Windows 2003 server:
CAUTION
IAS should never be installed on the ISA server itself, but rather on an internal member
server or domain controller.
1. Open the Add or Remove Programs menu from within the Control Panel of the
server designated to host IAS.
2. Select the Add/Remove Windows Components button.
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Utilizing RADIUS Authentication for VPN Connections
3. When the Windows Components Wizard window opens, scroll down to locate the
Networking Service component section.
4. Highlight the Networking Services component, and click the Details button. Do not
click the check box beside Network Services; this installs every component.
5. On the Networking Service window, check the Internet Authentication Service
checkbox, as shown in Figure 9.9.
6. Click OK to close the Networking Services window. On the Windows Components
Wizard window, click Next.
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