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Directory System Agent
IT standard, part of X.500

A Directory System Agent (DSA) is the element of an X.500 directory service that provides User Agents with access to a portion of the directory (usually the portion associated with a single Organizational Unit). X.500 is an international standard developed by the International Organization for Standardization (ISO), and the International Telecommunication Union (ITU-T). The model and function of a directory system agent are specified in ITU-T Recommendation X.501.

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Active Directory

In Microsoft's Active Directory the DSA is a collection of servers and daemon processes that run on Windows Server systems that provide various means for clients to access the Active Directory data store.45

Clients connect to an Active Directory DSA using various communications protocols:

RFCs

  • RFC 2148 — Deployment of the Internet White Pages Service

References

  1. Daniel Blum (1989-10-30). "Details of X.500 architecture". Network World. 6 (43). IDG Network World Inc: 58. ISSN 0887-7661. /wiki/ISSN_(identifier) ↩

  2. Zahir Tari and Omran Bukhres (2001). Fundamentals of distributed object systems: the CORBA perspective. Parallel and distributed computing. Vol. 8. John Wiley and Sons. p. 219. ISBN 978-0-471-35198-6. 978-0-471-35198-6 ↩

  3. "X.500: Directory Access Protocol (DAP)". Javvin Technologies, Inc. Archived from the original on 2005-11-23. Retrieved 2005-09-22. https://web.archive.org/web/20051123033401/http://www.javvin.com/protocolX500.html ↩

  4. "Platform SDK: Active Directory: Directory System Agent". MSDN. Microsoft. Archived from the original on 2005-05-27. Retrieved 2005-09-22. https://web.archive.org/web/20050527170140/http://www.msdn.microsoft.com/library/en-us/ad/ad/directory_system_agent.asp ↩

  5. "Active Directory: Active Directory Diagnostics, Troubleshooting, and Recovery: Summary of Active Directory Architecture: Directory System Agent". Windows 2000 Server Resource Kit. Microsoft. Retrieved 2010-10-02. https://technet.microsoft.com/en-us/library/cc961806.aspx ↩

  6. "Platform SDK: Active Directory: Directory System Agent". MSDN. Microsoft. Archived from the original on 2005-05-27. Retrieved 2005-09-22. https://web.archive.org/web/20050527170140/http://www.msdn.microsoft.com/library/en-us/ad/ad/directory_system_agent.asp ↩

  7. "Active Directory: Active Directory Diagnostics, Troubleshooting, and Recovery: Summary of Active Directory Architecture: Directory System Agent". Windows 2000 Server Resource Kit. Microsoft. Retrieved 2010-10-02. https://technet.microsoft.com/en-us/library/cc961806.aspx ↩

  8. "Platform SDK: Active Directory: Directory System Agent". MSDN. Microsoft. Archived from the original on 2005-05-27. Retrieved 2005-09-22. https://web.archive.org/web/20050527170140/http://www.msdn.microsoft.com/library/en-us/ad/ad/directory_system_agent.asp ↩

  9. "Active Directory: Active Directory Diagnostics, Troubleshooting, and Recovery: Summary of Active Directory Architecture: Directory System Agent". Windows 2000 Server Resource Kit. Microsoft. Retrieved 2010-10-02. https://technet.microsoft.com/en-us/library/cc961806.aspx ↩

  10. "Platform SDK: Active Directory: Directory System Agent". MSDN. Microsoft. Archived from the original on 2005-05-27. Retrieved 2005-09-22. https://web.archive.org/web/20050527170140/http://www.msdn.microsoft.com/library/en-us/ad/ad/directory_system_agent.asp ↩

  11. "Active Directory: Active Directory Diagnostics, Troubleshooting, and Recovery: Summary of Active Directory Architecture: Directory System Agent". Windows 2000 Server Resource Kit. Microsoft. Retrieved 2010-10-02. https://technet.microsoft.com/en-us/library/cc961806.aspx ↩

  12. "Platform SDK: Active Directory: Directory System Agent". MSDN. Microsoft. Archived from the original on 2005-05-27. Retrieved 2005-09-22. https://web.archive.org/web/20050527170140/http://www.msdn.microsoft.com/library/en-us/ad/ad/directory_system_agent.asp ↩

  13. "Active Directory: Active Directory Diagnostics, Troubleshooting, and Recovery: Summary of Active Directory Architecture: Directory System Agent". Windows 2000 Server Resource Kit. Microsoft. Retrieved 2010-10-02. https://technet.microsoft.com/en-us/library/cc961806.aspx ↩

  14. "Platform SDK: Active Directory: Directory System Agent". MSDN. Microsoft. Archived from the original on 2005-05-27. Retrieved 2005-09-22. https://web.archive.org/web/20050527170140/http://www.msdn.microsoft.com/library/en-us/ad/ad/directory_system_agent.asp ↩

  15. "Active Directory: Active Directory Diagnostics, Troubleshooting, and Recovery: Summary of Active Directory Architecture: Directory System Agent". Windows 2000 Server Resource Kit. Microsoft. Retrieved 2010-10-02. https://technet.microsoft.com/en-us/library/cc961806.aspx ↩