The best way to protect a system is to understand all the ways hackers can break into it: Hacking Exposed shows administrators how the flaws and loopholes in security technologies can be exploited, and provides security solutions. This edition is updated with new pages to cover the hacks you've been reading about--DoS attacks, Linux hacks, e-mail security holes, cracking passwords, back doors. Through elements such as case studies, risk ratings, attacks & countermeasures, the authors provide specific solutions on how to combat hackers and prevent their attacks. The companion Web site contains custome scripts and links to tools that help administrators tes their security measures. The authors are recognised security experts, having appeared on national print, TV, radio, and on-line media.