The result of all of this familiarity with bad-guy tools is a leg up on defending against them. Hacking Exposed wastes no time in explaining how to implement the countermeasures--where they exist--that will render known attacks ineffective. Taking on the major network operating systems and network devices one at a time, the authors tell you exactly what Unix configuration files to alter, what Windows NT Registry keys to change, and what settings to make in NetWare. They spare no criticism of products with which they aren't impressed, and don't hesitate to point out inherent, uncorrectable security weaknesses where they find them. This book is no mere rehashing of generally accepted security practices. It and its companion Web site are the best way for all of you network administrators to know thine enemies. --David Wall. Topics covered:

* Security vulnerabilities of operating systems, applications, and network devices
* Administrative procedures that will help defeat them
* Techniques for hacking Windows 95, Windows 98, Windows Me, Windows NT 4.0, Windows 2000, Novell NetWare, and Unix
* Strategies for breaking into (or bringing down) telephony devices, routers, and firewalls