Preface

OPNsense is one of the most powerful open source firewalls and routing platforms available. With OPNsense, you can now protect networks using features that were only available to closed source commercial firewalls before.

This book is a practical guide to building a comprehensive network defense strategy using OPNsense. You'll start with the basics, understanding how to install, configure, and protect network resources using native features and additional OPNsense plugins. Next, you'll explore real-world examples to gain in-depth knowledge about firewalls and network defense. You'll then focus on boosting your network defense, preventing cyberthreats, and improving your knowledge of firewalling using this open source security platform.

By the end of this OPNsense book, you'll be able to install, configure, and manage the OPNsense firewall by making the most of its features.