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NTLM Authentication

Published: November 29, 2012

Updated: November 29, 2012

Applies To: Windows 7, Windows 8, Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Vista, Windows XP

This technology collection page lists all pertinent resources available for NTLM authentication in the Microsoft TechNet Libraries for all Windows Server operating system versions beginning with Windows Server 2003.

The following resources will help you locate priority information:

  • Introducing the Restriction of NTLM Authentication

    This product evaluation article written for the IT professional describes new security policies introduced in Windows Server 2008 R2 and Windows 7 to help you analyze and restrict NTLM authentication usage in your IT environment.

  • Changes in NTLM Authentication

    This product evaluation article for IT professionals describes two significant changes in the NTLM authentication protocol in Windows Server 2008 R2 and Windows 7.

  • IT Infrastructure Threat Modeling Guide

    This planning guide provides a method that enables IT professionals to develop threat models for their IT environments and prioritize their investments in IT infrastructure security.

  • Threats and Countermeasures: Security Settings in Windows Server 2003 and Windows XP

    This Threats and Countermeasures Guide provides a reference to all security settings that provide countermeasures for specific threats against the listed operating systems. This guide is a companion to two other Microsoft publications: the Windows Server 2003 Security Guide and the Windows XP Security Guide.

  • Threats and Countermeasures Guide: Security Settings in Windows Server 2008 and Windows Vista

    This Threats and Countermeasures Guide provides a reference to all security settings that provide countermeasures for specific threats against the listed operating systems. This guide is a companion to two other Microsoft publications: the Windows Server 2008 Security Guide and the Windows Vista Security Guide.

  • Threats and Countermeasures Guide: Security Settings in Windows Server 2008 R2 and Windows 7

    This Threats and Countermeasures Guide provides a reference to all security settings that provide countermeasures for specific threats against the listed operating systems.

  • Designing Your Windows Authentication Strategy

    This design guide for the IT professional helps you understand, plan for, and implement specific strategies to secure authentication in your IT environment beginning with Windows Server 2003.

  • Auditing and restricting NTLM usage guide

    This guide describes the considerations and steps required to reduce NTLM usage in your environment by using available tools and the restrict NTLM audit and blocking policies in Windows Server 2012, Windows Server 2008 R2, Windows 8, and Windows 7.

The following list of Knowledge Base articles for the IT professional address specific issues uncovered in Windows operation systems beginning with Windows Server 2003.

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