You're reading from OPNsense Beginner to Professional Protect networks and build next-generation firewalls easily with OPNsense

Product type Paperback

Published in Jun 2022

Publisher Packt

ISBN-13 9781801816878

Length 464 pages

Edition 1st Edition

Tools

FreeBSD

Concepts

Network Security

Author (1):

Julio Cesar Bueno de Camargo

View More author details

Table of Contents (25) Chapters

Preface

1. Section 1: Initial Configuration

2. Chapter 1: An OPNsense Overview FREE CHAPTER

3. Chapter 2: Installing OPNsense

4. Chapter 3: Configuring an OPNsense Network

5. Chapter 4: System Configuration

6. Section 2: Securing the Network

7. Chapter 5: Firewall

8. Chapter 6: Network Address Translation (NAT)

9. Chapter 7: Traffic Shaping

10. Chapter 8: Virtual Private Networking

11. Chapter 9: Multi-WAN – Failover and Load Balancing

12. Chapter 10: Reporting

13. Section 3: Going beyond the Firewall

14. Chapter 11: Deploying DHCP in OPNsense

15. Chapter 12: DNS Services

16. Chapter 13: Web Proxy

17. Chapter 14: Captive Portal

18. Chapter 15: Network Intrusion (Detection and Prevention) Systems

19. Chapter 16: Next-Generation Firewall with Zenarmor

20. Chapter 17: Firewall High Availability

21. Chapter 18: Website Protection with OPNsense

22. Chapter 19: Command-Line Interface

23. Chapter 20: API – Application Programming Interface

24. Other Books You May Enjoy

Advanced customization

The OPNsense webGUI is a powerful configuration tool, and you rarely need to change or customize the OPNsense configuration while using the CLI. Still, it can happen, and it is essential to know which tools we can count on for doing this task.

The config.xml file is the webGUI's generated XML configuration file, it is where the OPNsense configuration file resides.

Customizing the XML configuration file

All configurations generated by webGUI through the OPNsense framework are saved in /conf/config.xml.

Note

Before modifying the config.xml file, always make a backup copy! Editing this file can crash your OPNsense installation, so take caution!

The following is an example where the manual editing of the config.xml file could help.

This is an example showing the substitution of OPNsense hardware. Let's suppose that you need to replace the OPNsense hardware, and the new one uses a different network card, which means changing the Network...