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Edit RADIUS client configuration

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Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

To edit RADIUS client configuration

  1. Open Internet Authentication Service.

  2. In the console tree, click RADIUS Clients.

  3. In the details pane, double-click the client for which you want to edit the configuration.

  4. Make changes to the RADIUS client configuration.

  5. Click OK to save your changes.

Notes

  • To open Internet Authentication Service, click Start, click Control Panel, double-click Administrative Tools, and then double-click Internet Authentication Service.

  • If IAS receives an access request from a RADIUS proxy server, IAS cannot detect the manufacturer of the NAS that originated the request. This can cause problems if you plan to use remote access policy conditions that are based on the client vendor and have at least one client that is defined as a RADIUS proxy server. Requests from the proxy might not match any of the remote access policies and be denied.

  • Shared secrets are case-sensitive. Verify that the client's shared secret and the shared secret that you type in Shared secret are identical. For more information, see Related Topics.

  • If the client address cannot be resolved when you click Verify, make sure the DNS name that you typed is correct.

  • You can use the friendly name that you provide for your RADIUS clients with the Client-Friendly-Name condition in remote access policies. For more information, see Related Topics.

  • Enabling the use of the Message Authenticator attribute provides additional security when PAP, CHAP, MS-CHAP, and MS-CHAP v2 are used for authentication. EAP uses the Message Authenticator attribute by default and does not require that you enable it. For more information, see Related Topics.

  • You can configure IAS in Windows Server 2003, Standard Edition, with a maximum of 50 RADIUS clients and a maximum of 2 remote RADIUS server groups. You can define a RADIUS client using a fully qualified domain name or an IP address, but you cannot define groups of RADIUS clients by specifying an IP address range. If the fully qualified domain name of a RADIUS client resolves to multiple IP addresses, the IAS server uses the first IP address returned in the DNS query. With IAS in Windows Server 2003, Enterprise Edition, and Windows Server 2003, Datacenter Edition, you can configure an unlimited number of RADIUS clients and remote RADIUS server groups. In addition, you can configure RADIUS clients by specifying an IP address range.

Information about functional differences

  • Your server might function differently based on the version and edition of the operating system that is installed, your account permissions, and your menu settings. For more information, see Viewing Help on the Web.

See Also

Concepts

Shared secrets
Message Authenticator attribute
IAS as a RADIUS server design considerations
Elements of a remote access policy
Configure the Message Authenticator attribute and shared secret