Remote Authentication Dial-In User Service (RADIUS) is a
standard protocol for the authentication and accounting of remote access users.
Many remote access vendors use RADIUS as the authentication method of choice
for their dial-up, VPN, and other remote access equipment.
Included in Windows 2000 Server, Internet Authentication
Service (IAS) is the Microsoft implementation of a RADIUS server, and it enables
the Windows 2000 Server to function as a RADIUS server. IAS’ RADIUS capability
offers several benefits. Let’s look at a few of these advantages:
- IAS centralizes and consolidates
authentication: You can maintain a single set of user accounts in
Active Directory and use those accounts to authenticate remote users that
access the network through dial-up equipment or VPN connections to remote
- It allows you to outsource remote
access: You can outsource remote access to your ISP and use IAS to
authenticate and log access. Outsourcing relieves your organization of the
cost of the remote access hardware and maintenance associated with
managing the remote access equipment.
- It centralizes authentication
management: A single IAS server (or a small group of servers) can
handle remote access authentication and accounting for multiple remote
access points, simplifying remote access administration in the process.
Installing IAS on your Windows 2000 Server is an easy
process. Follow these steps:
to Start | Settings | Control Panel.
the Add/Remove Programs applet.
Add/Remove Windows Components.
the Components list, select Networking Services, and click Details.
the Internet Authentication Service check box, click OK, and click Next
to start the installation.
After you’ve installed IAS, go to Start | Programs |
Administrative Tools | Internet Authentication Service to open the IAS console.
From here, you can configure authentication and accounting ports, monitor
users, and perform other RADIUS administration tasks.
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