Microsoft Knowledge Base Article 908620 contains the following introduction:
Microsoft security bulletin MS05-051 describes some security-related changes to Transaction Internet Protocol (TIP) functionality in Microsoft Distributed Transaction Coordinator (MS DTC). Security bulletin MS05-051 describes security update 902400. When you install security update 902400 in Microsoft Windows 2000, you disable TIP functionality. By default, TIP is disabled on computers that are running Microsoft Windows XP or Microsoft Windows Server 2003.
On computers that are running Windows XP or Windows Server 2003, or on computers that have security update 902400 installed, you can enable TIP by configuring a registry entry.
Security update 902400 also contains new registry entries to configure TIP functionality. This article describes how to configure MS DTC TIP functionality after you install security update 902400.
IMPORTANT Before you modify the TIP-related registry settings that are described in this article, see security bulletin MS05-051 for information about the following issues:
|•||Vulnerabilities that the security bulletin addresses.|
|•||Why TIP functionality is disabled by default.|
|•||Recommended potential mitigation factors.|
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
902400 MS05-051: Vulnerabilities in MS DTC and COM+ could allow remote code execution