No network is too insignificant to be spared by an attacker. Even home networks, washing machines, and smartwatches are under threat and require a secure environment.
Simple packet filters are becoming a thing of the past. Even the open-source domain is moving towards Next-Generation Firewalls. OPNsense is a top player when it comes to intrusion detection, application control, web filtering, and Antivirus.
Firewalls are a component of the security concept. They protect against known and emerging threats to computers and networks. A firewall offers the highest level of protection if its functions are known, its operation is simple, and it is ideally positioned in the surrounding infrastructure. OPNsense accepts the challenge and meets these criteria in different ways. This book is the ideal companion for understanding, installing, and setting up an OPNsense firewall.
Each chapter explains a real-world situation, describes the theoretical fundamentals, and presents a lab experiment for better understanding. Finally, it offers a solution using OPNsense methods and knowledge with a technical standpoint.
Chapter 12: High Availability.
Almost all chapters use the same network layout and the same IP addresses.
Terms, names, abbreviations and where to find them in the book.
The complete configuration for rebuilding or understanding the OPNsense firewalls.
The errata lists the mistakes in content and their correction.
Take a look at the table of contents to reveal the covered topics.
