Book Image

OPNsense Beginner to Professional

By : Julio Cesar Bueno de Camargo
5 (1)
Book Image

OPNsense Beginner to Professional

5 (1)
By: Julio Cesar Bueno de Camargo

Overview of this book

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 previously available to closed source commercial firewalls. 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 of firewalls and network defense. You’ll then focus on boosting your network defense, preventing cyber threats, 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.
Table of Contents (25 chapters)
1
Section 1: Initial Configuration
6
Section 2: Securing the Network
13
Section 3: Going beyond the Firewall

Updating firmware

Once we have successfully installed OPNsense, we can explore it using either the CLI or WebGUI. Let's start with WebGUI to see the update process and how to install some plugins using it.

When we log in for the first time in WebGUI, the first screen that appears is the configuration wizard, which will help you to do the first configurations in your OPNsense. Through a next-next-finish process, you can configure the hostname, DNS servers, and the Resolver, Timezone, WAN, and LAN interfaces, for example. I will not explore the wizard in this book, because the goal here is to explore each configuration in detail and the wizard will not help us with that. But, if you are curious about the configuration wizard, you can explore it by accessing the System | Wizard menu.

Important Note

If you want to test the Configuration Wizard, I recommend you take a VM snapshot beforehand, so that if something gets broken you can easily fix it.

Checking for system updates...