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

Common issues

As we have explored so far, the OPNsense Captive Portal implementation works pretty well, but things in life are not always a bed of roses. We sometimes face issues while using the Captive Portal, such as HTTPS URLs' redirection to the Captive Portal authentication page, as I mentioned previously in this chapter.

I will mention some common issues we need to handle daily with our CloudFence support team. Of course, you might find dozens of issues on the official forum, but it will not be possible to cover each one here as we have a limited number of pages for this chapter.

HTTPS page redirection while using the Captive Portal

We have two different approaches to try to address this issue, as outlined next.

Using DNS

This is an effective way for most modern mobile devices to access specific DNS entries while detecting a Captive Portal before going out to the internet. It might also work with most modern desktop browsers too. This technique consists of...