While there are a lot of books available on network security, most of them take the approach of focusing on the attacks, on the hacks, and responding to those on a one-by-one basis. This book does just the opposite, focusing on a holistic approach to protecting your entire network. It covers all seven layers of the Defense in Depth (DID) Model, as well as other material not covered in any other books. DID refers to a system of combining defenses to provide added protection. Since there are then multiple barriers between the attacker and the attacked, this increases the level of security, and increases the cost of the attack to the attacker. The authors are two senior members of Microsoft's Security and Business Technology Unit (SBTU), and are among the most sought-after speakers for security conferences. With security being such a strong focus at Microsoft, this book is destined to become the standard guide for all network administrators and architects who want to have the most secure Windows network possible.