The variable DEFAULT_USER, as well as the variables ACCESS_FILE and PASSWORD_ATTEMPTS, affects AcuServer access security.

DEFAULT_USER holds the default user name given to AcuServer requesters who are not specifically mapped to a local user name in the server access file (as when the Local Username field of the access record is empty, or the value of the field is an invalid user name). Definition of DEFAULT_USER is optional. DEFAULT_USER cannot be defined as root. See AcuServer Connection Logic for a description of when AcuServer assigns DEFAULT_USER to a requester.