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Latest freely available X.500 Specifications

According to an agreement between ISO/IEC and ITU-T text common for the two organisations is not unconditionally freely available, as it is the case for ITU-T only Recommendations.

Common text will be freely available one year or later after publication by ISO/IEC..

 In the table below you can either:
  • Follow the "Latest" link to download the latest freely available edition of the document
  • Follow the "Other" link to get a wider choice, like allowing allowing access to earlier editions.

Technical corrigenda are available by following the "Here" link.

All the documents are labelled superseded, but may still be relevant.

X.500

The Directory: Overview of concepts, models and services - 6th edition

Latest

Other

X.501

The Directory: Models - 6th edition

Latest

Other

X.501

Corrigendum 1

Here

-

X.501

Corrigendum 2

Here

-

X.501

Corrigendum 3

Here

-

X.509

The Directory: Public-key and attribute certificate frameworks - 6th edition

Latest

Other

X.509

Corrigendum 1

Here

-

X.509

Corrigendum 2

Here

-

X.509

Corrigendum 3

Here

-

X.511

The Directory: Abstract service definition - 6th edition

Latest

Other

X.511

Corrigendum 1

Here

-

X.511

Corrigendum 2

Here

-

X.511

Corrigendum 3

Here

-

X.518

The Directory: Procedures for distributed operation - 6th edition

Latest

Other

X.518

Corrigendum 1

Here

-

X.518

Corrigendum 2

Here

-

X.519

The Directory: Protocol specifications - 6th edition

Latest

Other

X.519

Corrigendum 1

Here

-

X.519

Corrigendum 2

Here

-

X.520

The Directory: Selected attribute types - 6th edition

Latest

Other

X.520

Corrigendum 1

Here

-

X.520

Corrigendum 2

Here

-

X.520

Corrigendum 3

Here

-

X.521

The Directory: Selected object classes - 6th edition

Latest

Other

X.521

Corrigendum 1

Here

-

X.525

The Directory: Replication - 6th edition

Latest

Other

X.525

Corrigendum 1

Here

-

X.530

The Directory: Use of systems management for administration of the Directory - 6th and last edition

Latest

Other

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