Introduction

This book was written to address the need for increased understanding of network security. Many texts are available on the subject, and they have value. However, many people and companies are now considering increasing their network security. Where do you start? Perhaps you want to deploy wireless and you need to ensure that it is secure. What single resource can provide you with a good overview of wireless security or firewalls, and so on? This book provides you with enough security information that you can leverage your newfound knowledge for your own benefit and for the benefit of your organization.

This book was written from the standpoint that every reader needs security but does not actually understand the risks and available techniques and possibilities. Each chapter addresses a specific aspect of an overall layered security model and enables you to see and understand why security for each area is needed, what you should consider, and how you should proceed.