In this article, we have done a depth analysis and listed your top 10 best Free Firewall software that provided extended security to protect your system from bad actors.

Generally, every computer is connected to the internet and is susceptible to being the victim of a hacker or an unwanted attack.

The whole procedure, which is used generally, consists of mopping the network in search of a connected computer or laptop.

Then the attacker simply looks for the security “hole” simply to gain access to the data present on the computer or laptop.

10 Best Free Firewall Software 2020

All these threats could even become greater if the computer permanently remains connected to the internet.

If the PC is connected without permanent supervision, then undoubtedly it will become a gold mine for the attackers or hackers.

Hence, to protect us from intruders, we have in our favor a fantastic tool which is known as Firewall.

Frequently Asked Questions Related to Best Free Firewall Software

Q#1 What is a Firewall?

Detailed Answer: Basically, firewalls are tools that can be used to improve the security of computers attached to a network, just like LAN or the Internet.

So, if we think about what a firewall is a first and foremost thing that comes to our mind is that a firewall is a computer software program that restricts illegal and unapproved access to or from a separate or private network.

These are integral elements of a complete security framework for your system or network.

Hence a firewall works as a wall between your computer and the internet. It cleans out all the wicked traffic originating from the outside world, whereas software and hardware-based firewalls are also available.

Apart from software, USB firewall sticks are also available, and they are generally known as Armadillo and USG.

Hence, many people believe that a firewall is a device that is established on the network, and it checks the traffic that crosses within the network section.

However, apart from all these things you can also have a host-based firewall that can be administered on the computer systems themselves, along with ICF (Internet Connection Firewall). 

Fundamentally, the work of both firewalls is identical: to stop the intervention and present a robust process of access control policy.

Well, we can define, firewalls are nothing but a system that protects your computer.

Basically, the firewall achieves all these tasks by examining the data packets upon the rules that have been set up.

Hence, if the data packs are in trade with these rules, then they are allowed by the firewalls. If they lose to meet the rules, then the firewall refuses them and blocks them.

Well, in today’s generation, firewalls are serving to defend PCs and other related devices over the world, whether they refer to individual users, huge companies, or the administration.

Q#2 How Firewall Work?

Detailed Answer: Well, after knowing what a firewall is, now you must be thinking about how it works.

Basically, a firewall entirely confines your computer from the internet practicing a “wall of code” that investigates each individual “packet” of data as it appears on both sides of the firewall —that is inbound to or outbound from your device— to conclude whether it should be allowed to cross or gets rejected.

Moreover, firewalls also have further ability to improve security by enabling granular control over what types of system roles and methods have access to networking sources.

Hence, firewalls can utilize various kinds of signs and host situations to enable or disallow traffic.

However, they seem complicated, but firewalls are comparatively easy to install, set up, and work.

Establishing antivirus software as well as an extra firewall is your best opportunity to keep your system malware-free.

Furthermore, firewalls work by controlling the data traffic to allow or accept the ‘good data’ while refusing or blocking the ‘bad or malicious data.’

But, if we get into the details of the features, then the firewall uses one of the three methods or sequences of these to measure the traffic that passes in and out of the network.

Hence, the firewall permits the information to go through if the connection yields a decisive match unless the record of the data or data packet is refused.

Q#3 Types of a Firewall?

Detailed Answer: Following are the three types of firewalls.

  1. Packet-Filtering Firewalls
  2. Circuit-level gateways.
  3. Stateful Inspection Firewalls.

Packet-filtering firewalls: This is one of the original types of firewalls, which simply operates online at junction points where the devices like routers and switches simply do their job.

However, this firewall does not route packets. But it actually compares each packet received with a set of established standards like IP addresses, packet type, port number, etc.

Circuit-level gateways: It simply monitors the TCP link protocols on the network.

As they are simply established between local and remote hosts to determine if the session that is started is legitimate or not. However, apart from all these things, it does not inspect the packages.

Stateful inspection firewalls: It not only examines each packet but also track if that packet is part of an established TCP session.

Moreover, it offers more security than packet filtering or simple circuit-level gateways. And not only that even it also generates a greater impact on network performance.

However, apart from all these things, we have mentioned all the well-known and best free firewall software in 2023.

Best Free Firewall Software and Key Features

Gbhackers on Security

So, now without wasting much time, let’s get started and simply explore the whole list that we have mentioned below.

Best Free Firewall Software

  1. Comodo Free Firewall
  2. GlassWire
  3. Zone Alarm Basic Firewall
  4. TinyWall
  5. Malwarebytes Windows Firewall
  6. OpenDNS
  7. Windows Firewall
  8. Netdefender
  9. AVS Firewall
  10. Agnitum Outpost Firewall

best hardware firewall for home network

Internet Firewall Appliances