http://www.rfc-editor.org/rfc/rfc1487.txt
RFC 1487: X.500 Lightweight Directory Access Protocol, W. Yeong, T. Howes, S. Kille1993-07-01T23:00:00-00:00The protocol described in this document is designed to provide access to the Directory while not incurring the resource requirements of the Directory Access Protocol (DAP). [STANDARDS-TRACK]