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

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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 settings

OPNsense's WebGUI is a powerful management interface that allows us to configure even the most advanced features available in the FreeBSD operating system. Let's explore them and learn how to optimize and customize our firewall with available advanced options.

In this topic, we will explore two menu options: System | Settings | Miscellaneous and System | Settings | Tunables. Let's start with the first one.

On the Miscellaneous page, we will find options related to hardware, system file backups, disk and memory settings, and the hardware buzzer control when it is present on the hardware.

Cryptography settings

There are the following cryptography options:

Diffie-Hellman parameters: These cryptographic keys exchange methods used in services such as VPN tunnels. In the default configuration, it will be updated at least twice a year by software updates. If you need to change it from the default option, you will be able to set it as RFC7919...