Need a Real Firewall?

Learn how to configure pfSense Firewall, a robust and free firewall

The Firewall market is extremely large. If you consider that every company today has an Internet connection, and that this connection needs to be shared securely, you can use pfSense to provide consulting and install Firewalls, charging a monthly fee for maintenance. Have you thought about that?

The use of opensource software is becoming increasingly interesting for companies looking for an opportunity to work with affordable and quality platforms like Linux.

Finding a free firewall that is simpler to use and can effectively protect the network from external threats can be easy, and pfSense came to prove this.

In this post you will learn more about what pfSense is, how it can be a good opportunity for networks and what are its main features and advantages. Follow along!

Check out the Complete and Practical Pfsense Course from Certificação Linux

What is pfSense? 

pfSense is free and open-source software based on the FreeBSD operating system that was adapted to work as a firewall or even as a network router, and it works on Linux systems.

Since its first version in 2004, its use has grown significantly because it is a system that can be installed on various types of hardware, meeting the needs of different businesses and having the capacity for expansion through the use of numerous packages that can shape network usage.

What are the main features of pfSense?

pfSense works with most of the features that traditional firewalls offer - such as blocking and access control and traffic monitoring - but because it has open source code it does not have so many limitations and can be modified and improved.

Even without in-depth knowledge of UNIX systems, users can install and configure the service without major difficulties.

Other additional features that pfSense also offers - such as VPN (Virtual Private Network) configuration, RSA key generation, and traffic monitoring - make it a good option when choosing a service.

Among the main features and advantages of pfSense we can highlight:

Configurable interface

Instead of lines of code, as is usually the case with opensource firewalls, pfSense offers an easy-to-use web interface that can be configured by the user.

Expansion packages

Because it works with open source code, pfSense has an infinite variety of packages that allow the expansion of the system.

They allow different types of access, detailed reports of data input and output, ways to export configurations, and many other functionalities.

Hardware freedom

pfSense allows installation on different types of hardware, and it is not sold together with specific equipment as is common with commercial firewall systems.

To help with installation, pfSense.org offers a recommended hardware guide for the needs of each business.

State table with more control

The state table allows users to verify traffic and configurations of the networks used. Traditional firewalls already allow this access, but pfSense achieves much greater control over it thanks to OpenBSD's Packet Filtering.

Usage reports

Besides the state table, it is possible to monitor statistics such as firewall status, total and individual system performance, response times, CPU usage, and packets sent and received.

Learn how to use pfSense

To be able to explore the advantages of pfSense's opensource software, it is important to have a certification that teaches the best ways to use the platform and how to configure specific functions, such as defining multi-wan load balancing and defining NAT rules.

Having this knowledge can help technicians get job opportunities at large companies that already work with pfSense internally.

Want to learn more about pfSense? Check out the Certificação Linux course!

Learn much more about Linux in our online course. You can enroll here. If you already have an account, or want to create one, just log in or create your user here.

Did you like it? Share