Readers see what programs are out there, get an overview of what programs can do, and benefit from detailed explanations of concepts (such as wardialing and rootkits) that most system administrators kind of understand, but perhaps not in detail. This new edition has been updated extensively, particularly with the results of the exercise "honeypot" (in which the attack on the victim machine being monitored) and Windows 2000 public security trials. There are many new things on e-mail worms, denial-of-service (DDoS) attacks, and attacks that involve routing protocols. The result of all this familiarity with bad tool who is a foot in defending against them. Taking the major network operating systems and network devices one by one, the authors tell you exactly what Unix configuration files to alter, what Windows NT Registry keys to change, and what arrangements to make in NetWare. This and its companion Web site is the best way for all of you network administrators to know thine enemies Wall. - David Topics covered: Security vulnerabilities of operating systems, applications, and administrative procedures of network devices that will help defeat them Techniques for hacking Windows 95, Windows 98, Windows Me, Windows NT 4.0, Windows 2000, Novell NetWare, and Unix strategy to break into (or bring down) phone devices, routers, and firewalls