Differences between LDAP 2 and LDAP 3
LDAP 3 defines a number of improvements that allow a more efficient implementation of the Internet directory user agent access model. These changes include:
- Use of UTF-8 for all text string attributes to support extended character sets.
- Operational attributes that the directory maintains for its own use; for example, to log the date and time when another attribute has been modified.
- Referrals allow a server to direct a client to another server that may have the data that the client requested.
- Schema publishing with the directory, allowing a client to discover the object classes and attributes that a server supports.
- Extended searching operations to allow paging and sorting of results, and client-defined searching and sorting controls.
- Stronger security through an SASL-based authentication mechanism.
- Extended operations, providing additional features without changing the protocol version.
LDAP 3 is compatible with LDAP 2. An LDAP 2 client can connect to an LDAP 3 server (this is a requirement of an LDAP 3 server). However, an LDAP 3 server can choose not to talk to an LDAP 2 client if LDAP 3 features are critical to its application.
Build date: 10/26/2012