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Practical OPNsense
Building Enterprise Firewalls with Open Source

by Markus Stubbig
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This book is the ideal companion for understanding, installing and setting up an OPNsense firewall. Each chapter explains a real-world situation, describes the theoretical fundamentals, and presents a laboratory experiment for better understanding. Finally, it offers a solution using OPNsense methods and knowledge from a technical background. The chapters are mostly independent of each other, but presented with increasing levels of proficiency. Thus, the topics dealt with are appropriate for beginners to professionals.

Available as (FREE) E-Book

bundled with Deciso products & services

Deciso B.V. | OPNsense Webshop

 

OPNsense, a Deciso® Open Source Project

Can your Firewall do all this ?

✓ No license cost ✓ Free Download ✓ Best Open Source Firewall

OPNsense, the Open Source Firewall that is easy-to-use and protects your network.

► Easy User Interface
► Stateful Firewall
► Traffic Shaper
► Two-Factor Authentication ( 2FA )
► Captive Portal
► Virtual Private Network
► High Availability CARP
► Filtering Caching Proxy
► Inline Intrusion Prevention
► Multi-WAN Load Balancing
► High Performance TCP/HTTP Load Balancer

► Issue Let's Encrypt Certificates
► Full Mesh VPN routing using Tinc
► Backup to Google Drive
► Support for Virtual Installs
► Netflow Exporter
► Network Flow Monitoring
► Built-in Reporting & Analysis
► Plugin Support
► REST API
► Community & Commercial Support
► Online Searchable Documentation

Users

Download and install in minutes, use the responsive modern GUI for easy setup. Community & Commercial support available.

Get Started

Developers

Easy build tools, join the development today! We believe sharing is the way to go; it’s your choice, BSD style license.

Find out more

Partners

Become a project partner, get listed on the partner page and use OPNsense® in your own products and offerings.

Partner benefits

About
Founded in Middelharnis, The Netherlands by Deciso B.V. in 2015 with a small team of highly skilled professionals and open source enthusiasts. OPNsense is a fast growing community project with thousands of active installations around the globe.
Mission
Our mission is to make OPNsense the most widely used open source security platform. We give users, developers and business a friendly, stable and transparent environment.
Fully Supported
The project offers online documentation, an active community forum and commercial support for businesses, resellers and integrators.

User Testimonials

Manuel Kasper Author of m0n0wall

"In my view, it is the perfect way to bring the m0n0wall idea into 2015, and I encourage all current m0n0wall users to check out OPNsense and contribute if they can."

Manuel Alexander Herzog OPNsense User

"Sophos UTM is good but to sofisticated for my needs. So I tried OPNsense and now EVERYTHING is as I want to have it. It is simple and with a great GUI."

Boris Hoppe CEO CompuNet Systems GmbH

"OPNsense provides more features, more reliability and more performance than any other commercial firewall product we had in use ever before. Being open source, we have full access regarding update plans and so on."