For network and systems administrators, Voglmaier explains how the Lightweight Directory Access Protocol which is used to access directories of information on computer networks. Most of the information available online, he says, is buried in product documentation, so he has picked out what is useful and compiled it into a non-product-specific guide. He discusses the protocol, basics, models, practical details, distributed architectures, directory-serve administration, web services, and designing directory services. Distributed by CRC.