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Turning Off NTLMv1 or How to Approach Turning Off Legacy Technology

Turning Off NTLMv1 or How to Approach Turning Off Legacy Technology. Brian Arkills Software Engineer, UW Windows Infrastructure Svc Mgr , and Associate Troublemaking Officer  UW-IT, Identity and Access Management Microsoft Directory Services MVP 2012-2014. Goals. Why Turn Off NTLMv1?.

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Turning Off NTLMv1 or How to Approach Turning Off Legacy Technology

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  1. Turning Off NTLMv1or How to Approach Turning Off Legacy Technology Brian Arkills Software Engineer, UW Windows Infrastructure Svc Mgr, and Associate Troublemaking Officer  UW-IT, Identity and Access Management Microsoft Directory Services MVP 2012-2014

  2. Goals

  3. Why Turn Off NTLMv1?

  4. Keys to Success Retiring Old Tech

  5. NTLMv1 Resources We Developed • NTLMv1 Removal - Known Problems and Workarounds • Customer Mitigation Walkthrough • PowerShell NTLMv1 Log Parser • PowerShell and Registry file for LMCompatibilityLevel • Log parsing -> Customer notification process • IIS web app that only allows NTLMv2

  6. Timeline and Visualizations

  7. Stumbling Points

  8. Tech - Stumbling Points

  9. Svc Mgmt – Stumbling Points

  10. Loose Ends

  11. What about NTLMv2? (Pass the Hash)

  12. The End Brian Arkills barkills@uw.edu @barkills http://blogs.uw.edu/barkills http://www.netid.washington.edu Author of LDAP Directories Explained Microsoft Directory Services MVP 2012-2014

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