This book is the result of the efforts and dedication of many people. First, thanks to Brett Bartow, executive editor, for his dedication and guidance and lots of patience with us during the development of this book.Chris Cleveland, thank you for your wonderful insight with special attention to detail, which significantly improved this book. Betsey Henkels, thank you for completing all our chapters with your wonderful touches. Your editing ability really astounded us, and without you, this book would not be the quality product it is now.Thanks to Michelle Grandin for getting us started with Cisco Press back in 2002 and introducing us to these challenging projects.Thanks to all the other Cisco Press team members who worked behind the scenes to make this a better book.Special thanks to the technical reviewers: Steve Kalman, Danny Rodriguez, and Tim Sammut. Their technical advice and careful attention to detail made this book accurate. Danny, thank you, especially, for all the encouragement you gave us over the past eight months. The Spurs game in San Antonio was great.Special thanks to Henry Benjamin for helping out with two chapters and for true friendship.The team at Cisco Press is an amazing family of hard-working and dedicated people."The two Gerts"