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LDAP signing changes for Active Directory administrative tools in Windows 2000 Server Service Pack 4
Article ID: 811422 - View products that this article applies to.
Important This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/ )Description of the Microsoft Windows Registry
Active Directory directory service administrative tools sign and encrypt all Lightweight Directory Access Protocol (LDAP) traffic. Signing LDAP traffic guarantees that the packaged data comes from a known source and that it has not been tampered with. This article describes the signing and sealing support that is added to Microsoft Windows 2000 Active Directory administrative tools after you install Windows 2000 Service Pack 4 (SP4).
Warning If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk. By default, Active Directory administrative tools in Microsoft Windows Server 2003 and in Microsoft Windows XP Professional sign and encrypt all LDAP traffic. Windows 2000 SP4 supports the same LDAP signing defaults for Windows 2000 Active Directory Administration tools as Windows Server 2003. However, it offers improved compatibility when targeting computers that have Windows 2000 SP2 installed. The Windows 2000 SP4 Active Directory administration tools can successfully target Windows 2000 SP2 domain controllers in scenarios that fail when a Windows Server 2003 client tries to perform them. There are two differences between the signing and sealing functionality of Windows 2000 SP4 and the signing and sealing functionality of Windows Server 2003 and Windows XP Professional clients:
Active Directory Administration tools that support LDAP signing and sealing in Windows 2000 SP4 include the following:
Active Directory administration tools may also negotiate by using the NTLM authentication protocol. Scenarios that start NTLM authentication include the following:
Note You cannot programmatically override the Group Policy setting to enable signing. This enables the administrator to force programs to use signing. If you do not want all programs to be forced to use signing, do not turn on LDAP signing. You may experience these errors intermittently in Windows 2000 or in Windows Server 2003 when signing is enabled and Active Directory is under stress from heavy use.