At nearly 900 pages, this volume is not only an excellent reference source, but also a testimony to the sheer volume of techniques available to those who wish to illicitly gain access to systems. If you're a system administrator, this book will, quite simply, scare you silly--and it should. It will also help you take preventative steps that will ultimately allow you a well-deserved peace of mind. An included CD-ROM contains a selection of security utilities, such as SAFEsuite, a demo of PORTUS Secure Firewall, and the famous SATAN (Security Administrator Tool for Analyzing Networks), which are all discussed within the book.