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LDAP query limits

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LDAP query limits

There are several methods of handling LDAP limitations.

By default, Active Directory 2000/2003 has an LDAP query limit (maxPageSize) of 1000 objects to prevent excessive loads and denial of service attacks. The system has two methods of dealing with this limit.

  • The default method is to break up the query to return fewer than 1000 objects at a time. For example, query only for objects starting with the letter a, then query for b objects.
  • The more efficient method for large environments is to enable paging, which is supported by default on all Microsoft Active Directory servers. Paging automatically splits the results into multiple result sets so the integration does not have to split up the query into multiple requests.