The rapid development of the Internet, coupled with increasing security requirements in information networks, databases, systems, and other information resources has led to the development of this book. The book acts as a response to increasing security needs in the marketplace by providing a comprehensive explanation of the fundamental issues of networking security. It presents concepts and principles of security standards, and provides a description of some emerging security technologies. The book deals with the issues of common security problems and how they can be addressed, and discusses the most appropriate algorithms, standards, and technologies which can be applied to solving common security problems. The text introduces readers to security at a conceptual level, with a strong emphasis on standards. It addresses the concepts and principles of security standards rather than the detailed implementation specifications. It can serve as a reference for professionals working in all aspects of networking security and standards, and may be used as a text for advanced courses on the topic.