Book Image

Network Security with pfSense

By : Manuj Aggarwal
Book Image

Network Security with pfSense

By: Manuj Aggarwal

Overview of this book

While connected to the internet, you’re a potential target for an array of cyber threats, such as hackers, keyloggers, and Trojans that attack through unpatched security holes. A firewall works as a barrier (or ‘shield’) between your computer and cyberspace. pfSense is highly versatile firewall software. With thousands of enterprises using pfSense, it is fast becoming the world's most trusted open source network security solution. Network Security with pfSense begins with an introduction to pfSense, where you will gain an understanding of what pfSense is, its key features, and advantages. Next, you will learn how to configure pfSense as a firewall and create and manage firewall rules. As you make your way through the chapters, you will test pfSense for failover and load balancing across multiple wide area network (WAN) connections. You will then configure pfSense with OpenVPN for secure remote connectivity and implement IPsec VPN tunnels with pfSense. In the concluding chapters, you’ll understand how to configure and integrate pfSense as a Squid proxy server. By the end of this book, you will be able to leverage the power of pfSense to build a secure network.
Table of Contents (7 chapters)

Verifying load balancing across WAN connections

Now, let's verify this setup and confirm that pfSense is able to load balance the traffic across multiple WAN connections. Let's head back to the pfSense WebGUI dashboard:

  1. Click on the Status tab and then select Gateways. Click the Gateway Groups tab:

You can see that the components of this Gateway Group are online. Since this is a load balance group, as long as a single gateway is online, this Gateway Group will be able to serve traffic to the end users. Let's switch to the client machine.

  1. In the Command Prompt window, let's execute the ping -t command:

And as you can see, it is still able to ping the remote machine, and it is getting a valid response back. So basically, this external traffic is being routed via the pfSense server in a load balanced fashion.

  1. Press Ctrl + C to stop the ping...