As organizations increase their system links across enterprise-wide networks and VPNs, as well as their exposure to customers, competitors, browsers, and hackers, it becomes increasingly imperative for Web professionals to be trained in techniques for effectively protecting their sites from internal and external threats. "Practical Internet Security" reveals how the Internet is paving the way for secure communications within organizations and on the public Internet. The book provides the fundamental knowledge needed to analyze risks to a system and to implement a security policy that protects information assets from potential intrusion, damage, or theft. It provides dozens of real-life scenarios and examples, as well as hands-on instruction in securing Web communications and sites. All systems administrators and IT security managers will find the book an essential practical resource.