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

External authentication

Besides local database authentication, OPNsense also supports an external authentication backend, such as Microsoft Active Directory or OpenLDAP, for example. The currently supported protocols are RADIUS and LDAP. There is a special authentication backend that is only used for the Captive Portal service: Voucher Server, which we will explore in detail in Chapter 14, Captive Portal. You can combine these backends with a Time-Based One-Time Password (TOTP) using Google Authenticator, for example, to enable 2FA.

If you aren't familiar with any of these protocols, you might be asking, When do I need to use an external authentication backend? Let's start with one common example.

VPNs

Try to imagine the following scenario: You need to set up a new VPN tunnel that will be used by one of your customers. The IT team told you that they need to provide secure access to employees – a few hundred. Most of them will work from home, but they already...