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OPNsense Beginner to Professional

OPNsense Beginner to Professional

By : Camargo
4.3 (8)
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OPNsense Beginner to Professional

OPNsense Beginner to Professional

4.3 (8)
By: Camargo

Overview of this book

OPNsense is one of the most powerful open source firewalls and routing platforms available. With OPNsense, you can now protect networks using features that were only previously available to closed source commercial firewalls. This book is a practical guide to building a comprehensive network defense strategy using OPNsense. You’ll start with the basics, understanding how to install, configure, and protect network resources using native features and additional OPNsense plugins. Next, you’ll explore real-world examples to gain in-depth knowledge of firewalls and network defense. You’ll then focus on boosting your network defense, preventing cyber threats, and improving your knowledge of firewalling using this open source security platform. By the end of this OPNsense book, you’ll be able to install, configure, and manage the OPNsense firewall by making the most of its features.
Table of Contents (25 chapters)
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1
Section 1: Initial Configuration
6
Section 2: Securing the Network
13
Section 3: Going beyond the Firewall

Exploring real-time traffic

So far, we've explored traffic graphs with historical data that helps us analyze an extended time frame. But sometimes, we need to see the traffic in real time. To do so, OPNsense has a real-time traffic page on its webGUI. To access it, go to Reporting | Traffic:

Figure 10.11 – The Reporting: Traffic page

The traffic graphs show the input and output for the selected interfaces and the top hosts (in bits per second). Each circle in the top host graph represents a host. If you pass your mouse cursor over it, it will display a legend (as shown in the preceding screenshot), along with information about the respective host.

By going to the Top talkers tab, you will find a table listing traffic information per address (in the selected interfaces):

Figure 10.12 – The Top talkers page

As you can see, the selected interface (shown in the top-right corner) will be shown in front of each line...

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