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Configure Wired Clients to Use PEAP-MS-CHAP v2

Updated: December 19, 2008

Applies To: Windows Server 2008, Windows Server 2008 R2

This procedure provides the steps that are required to configure a wired access connection profile for Protected Extensible Authentication Protocol–Microsoft Challenge Handshake Authentication Protocol version 2 (PEAP-MS-CHAP v2) for authentication by using secure passwords.

Membership in Domain Admins, or equivalent, is the minimum requirement to complete this procedure.

TipTip
For more information about individual controls on any active dialog box in Wired Network (IEEE 802.3) Policies, press F1 while viewing that dialog box.

  1. If you have not already done so, open the Windows Vista Wired Network (IEEE 802.3) Policies properties page.

  2. In Windows Vista Wired Network (IEEE 802.3) Policies Properties, on the General tab, in Policy Name, type a name for your network policy, or leave the default name New Wired Network Policy.

  3. In Description, type a description for your network policy.

  4. Select Use Windows Wired Auto Config service for clients to specify that Wired AutoConfig is used to configure wired network adapter settings.

  5. Click the Security tab, click Advanced, and then configure the following:

    1. To configure advanced 802.1X settings, in IEEE 802.1X, select Enforce advanced 802.1X settings.

      When the advanced 802.1X settings are enforced, the default values for Max Eapol-Start Msgs, Held Period, Start Period, and Auth Period are sufficient for most wired access deployments.

    2. To enable Single Sign On, select Enable Single Sign On for this network.

    3. The remaining default values in Single Sign On are sufficient for typical wired access deployments.

  6. Click OK to return to the Security tab. In Select a network authentication method, select Protected EAP (PEAP), and then click Properties. The Protected EAP Properties page opens.

  7. In Protected EAP Properties, verify that Validate server certificate is selected.

  8. In Trusted Root Certification Authorities, select the trusted root certification authority (CA) that issued the server certificate to your computer running Network Policy Server (NPS).

    noteNote
    This setting limits which root CAs that clients trust to the selected CAs. If no trusted root CAs are selected, clients will trust all root CAs listed in their trusted root certification authority store.

  9. Select Do not prompt user to authorize new servers or trusted certification authorities. Selecting this setting provides an enhanced user experience and better security.

  10. In the Select Authentication Method list, select Secured password (EAP-MS-CHAP v2).

  11. To enable PEAP fast reconnect, select Enable Fast Reconnect.

  12. If Network Access Protection (NAP) is configured on your network, select Enable Quarantine checks. Otherwise, clear this check box.

  13. Click Configure. In the EAP MSCHAPv2 Properties dialog box, verify Automatically use my Windows logon name and password (and domain if any) is selected, click OK, and then click OK to close Protected EAP Properties.

  14. Click OK to close the Security tab, and then click OK again to close the Windows Vista Wired (IEEE 802.3) Network Policy.

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