Microsoft KB Archive/272175

= HOW TO: Configure Active Directory Certificate Mapping =

Article ID: 272175

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Datacenter Server

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This article was previously published under Q272175





IN THIS TASK
SUMMARY Requirements
 * Enable the Active Directory Mapper in IIS 5.0
 * Enable Client Certificate Mapping on Your Web Site
 * Map the Client Certificate to the Corresponding Active Directory User



SUMMARY
This article describes how to configure Active Directory certificate mapping. Active Directory certificate mapping enables a user with a trusted public key to access directory resources without typing a user name and a password. Active Directory certificate mapping uses the following three components that are included in Windows 2000:


 * Internet Explorer 5.0
 * Internet Information Services (IIS) 5.0
 * Kerberos PKINIT extensions

Requirements
To configure Active Directory certificate mapping, you must have the following components:
 * Windows 2000 Active Directory.
 * A stand-alone certification authority (CA) (it can be either a root or a subordinate).
 * A server certificate that is signed by the stand-alone CA that is installed on your Web server.
 * A User certificate that is signed by the stand-alone CA that is installed on that user's computer.

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Enable the Active Directory Mapper in IIS 5.0
To enable the Active Directory mapper in IIS 5.0, follow these steps:
 * 1) Start the Internet Information Services snap-in, right-click the server that is hosting your Web site, and then click Properties.
 * 2) In the Master properties box, click WWW Service, and then click Edit.
 * 3) Click the Directory Security tab, and then click to select the Enable the Windows directory service mapper check box
 * 4) Click OK to accept the changes.
 * 5) Click OK to close the server properties dialog box.

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Enable Client Certificate Mapping on Your Web Site
To enable client certificate mapping on your Web site, follow these steps:
 * 1) Start the Internet Information Services snap-in, right-click the Web site that you want to configure to enable certificate mapping, and then click Properties.
 * 2) On the Directory Security tab, click Secure communications, and then click Edit.
 * 3) In the Client certificates section, click Require client certificates, and then verify that the Enable client certificate mapping check box has been selected.
 * 4) Click OK to accept the changes.
 * 5) Click OK to close the Web site properties dialog box.

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Map the Client Certificate to the Corresponding Active Directory User
To map the client certificate to the corresponding Active Directory user, follow these steps:  Export the user's certificate using one of the following methods:  ==== Method One ====

 Start the Certificates, Current User snap-in, and then double-click the Personal folder. Double-click the Certificates folder. A list is displayed that indicates the certificates that are stored in the user's store. Click the certificate for Secure Sockets Layer (SSL) communication, and then click Export. A wizard is displayed that enables you to export the certificate. </li> ==== Method Two ====

If you are running Internet Explorer 5.0 or later, follow these steps:

 On the Tools menu, click Internet Options.</li> Click Content, click Certificates, and then click the Personal tab.</li> Click the certificate that is used for SSL communications, and then click the Export button. A wizard is displayed that enables you to export the certificate.</li></ol> </li></ul>

When you come to the end of the wizard, save the certificate to a public folder in Binary or Base64 format so that it can be mapped to the Active Directory user account.

NOTE: For SSL purposes, the certificate should at least support client authentication.

</li> Start the Active Directory Users and Computers snap-in, right-click your domain, and then click Advanced Options on the View menu.</li> Open the Users container or the organizational unit where the user account resides, right-click the user account, and then click Name Mapping.</li> Click Add to link the user's certificate to the Active Directory user account.</li> Click the public folder where the user certificate was saved, click the user's certificate, and then click Open.</li> Click to select the Use Subject for alternate security identity check box.</li> Click OK to accept the mapped certificate.</li> Click OK to close the Identity Mapping dialog box.</li></ol>

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Keywords: kbenv kbhowto kbhowtomaster KB272175

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