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

Chapter 11: Deploying DHCP in OPNsense

This final part of the book will go through some extra features you can add to your OPNsense system to go beyond the firewall. We will explore services such as Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS), applying web-browsing controls and guest net authorization with a web proxy and a captive portal. We will see how to extend layer 4 firewalling with intrusion detection systems/intrusion prevention systems (IDSs/IPSs) and Zenarmor plugins and improve OPNsense availability by integrating two or more firewalls in a cluster.

Providing Internet Protocol (IP) addresses to network hosts is one possible firewall duty. In this chapter, we will understand DHCP concepts used by OPNsense and how to use them to perform dynamic IP address leasing. By the end of this chapter, we will be able to understand and set up DHCP using OPNsense, going through the following topics: