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HP Enterprise Directory

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» Overview

Protocols and standards

» Security

» FAQs

» Installation requirements



The Directory Service is based on the client-server model. The DSA server supports the directorySystemAC application context (DSP protocol) to communicate with other DSAs. Communications between server DSAs and client DUAs are supported by the directoryAccessAC application context (DAP protocol).

DAP enables DUAs in other X.500 implementations to access the HP Enterprise Directory DSA and vice-versa. DSP enables full interworking with DSAs in other implementations.

The X.500 DSA server supports LDAPv2 and LDAPv3 protocols. Inclusion of the LDAP interface enables the following clients to obtain directory information:

  • Internet Explorer
  • Netscape
  • Outlook
  • Eudora


The HP Enterprise Directory products are implemented according to the 1993 edition of ISO/IEC 9594 and the ITU-T (formerly 'CCITT') X.500 Recommendations. The products have successfully completed testing to the Open Systems Testing Consortium (OSTC) 1988 X.500 conformance tests. The conformance testing was performed by the United Kingdom National Computer Centre, an accredited OSTC testing center, who produced OSTC test reports valid in all European Community states. The products have been registered by the U.S. National Institute of Standards and Technology (NIST) as conformant to U.S. GOSIP.

The products are designed and implemented to conform (with some minor exceptions) to the following European and U.S. profiles:

NIST OIW Stable Implementor's Agreements - Version 5 edition 1

  • ENV 41210
  • ENV 41212
  • ENV 41215
  • ENV 41512

The product also supports the following Internet standards (where applicable):

  • RFC 1006
  • RFC 1274
  • RFC 1277 (as it applies to TCP/IP networks)
  • RFC 1278

In addition, the product supports SSL according to the following Internet standards:

  • RFC 2829 (only the parts that relate to Start TLS, not strong authentication using certificates)
  • RFC 2830

Note that the product does not support RFC 2831.

The directory's LDAP functions conform to the following standards:

For LDAPv2:

  • RFC 1777 Lightweight Directory Access Protocol
  • RFC 1558 A String Representation of LDAP Search Filters
  • RFC 1778 The String Representation of Standard Attribute Syntaxes

For LDAPv3:

  • RFC 2251 Lightweight Directory Access Protocol (v3)
  • RFC 2252 Lightweight Directory Access Protocol (v3): Attribute Syntax Definitions
  • RFC 2253 Lightweight Directory Access Protocol (v3): UTF-8 String Representation of Distinguished Names
  • RFC 2254 The String Representation of LDAP Search Filters
  • RFC 2255 The LDAP URL Format
  • RFC 2256 A Summary of the X.500 (96) User Schema for use with LDAPv3