Integration Server 10.3 | Integration Server Administrator's Guide | Configuring a Central User Directory or LDAP | Overview of How Integration Server Works with Externally Defined Users and Groups | When the Server Accesses Externally Defined Information
 
When the Server Accesses Externally Defined Information
Integration Server obtains externally defined information in the following circumstances:
*To authenticate clients
*To determine if an ACL allows or denies an action
Note:
Client requests that require Integration Server to access a central user directory or an LDAP directory may take longer to complete than those that do not.