Preface FreeRADIUS Beginner's Guide contains plenty of practical exercises that will help you with everything from basic installation to the more advanced configurations like LDAP and Active Directory integration. This book will help you understand authentication, authorization, and accounting in FreeRADIUS using the most popular Linux distributions of today. Larger deployments with realms and fail-over configuration are also covered along with tips. A quiz at the end of each chapter validates your understanding. What this book covers The book can be divided into three sections: 1. Introduction and installation (Chapter 1 to Chapter 3) 2. AAA functions of FreeRADIUS (Chapter 4 to Chapter 7) 3. Advanced topics (Chapter 8 to Chapter 13) Let's see what each chapter deals with: Chapter 1, Introduction to AAA and RADIUS, introduces FreeRADIUS and the RADIUS protocol. It highlights some key RADIUS concepts, which help the user avoid common misunderstandings. Chapter 2, Installation, describes how