🥇 Best Free Firewall Software in 2021

Are you searching for a best free Firewall software to protect your laptop, computer or any device from attackers and malware? Check here the list of top picks for the Best Free Firewall Software for Complete Protection.


Are you looking for the best Open Source Firewall software to protect your laptop, computer or Mobile device from attackers and malware?

Finding the best free Firewall software can be a very hard task in most cases. After a while, you will have the best choice of FREE Firewall to surf safely even on Android

Best Free Firewall software
Best Free Firewall software

What is a firewall

A firewall is a software that prevents attackers and malware from accessing your computer over the Internet.

A firewall is a protective shield between the global Internet and an organization’s local area network. It performs the function of checking and filtering data coming from the Internet. Depending on the settings, the firewall can skip or block them (for example, if it detects malware malicious attack, viruses, and a hacker attack).

There are many benefits to running a firewall on your computer. The increased security they provide is well worth a few extra notifications and pop-up alerts.

Firewalls are very important to prevent dangerous or fraudulent traffic from entering your network. They block the access of certain programs to the Internet if the activity is too risky.

How to install a firewall

In short, firewalls are used by both ordinary users and large companies, and can be both software and hardware for scanning incoming and outgoing data packets on your computer over the Internet.
First, you need to decide what solution is needed – purely software (usually used in small organizations with up to 100 people) or software and hardware (up to 1000 or more employees).

How to use a FREE Firewall?

Using a free Firewall is very simple, you just need to buy the software that offers more options, install into the Laptop, Computer or Mobile and enjoy the Free Firewall software service.

Firewall providers offer Free and Paid services. It is important to remember that most trial versions have limited functionality compared to the full version.

What types of attacks do firewalls protect against?

Following types of security provided by Firewall:

  • Backdoor Access
  • Remote Access Hacking
  • Email Attack
  • Source routing

Top 10 Best Free Firewall

ZoneAlarm Firewall

ZoneAlarm Firewall
ZoneAlarm Firewall

ZoneAlarm Firewall is another great option if you’re looking for a free Firewall, With the free software “ZoneAlarm Free Firewall” you protect your PC and private data from hackers, malware and other attacks from the Internet, via WLAN or local networks. In addition, the freeware controls the Internet access of your Windows programs. As soon as a program tries to send data, “ZoneAlarm Free Firewall” explicitly requests your permission. Using a simple interface, you can block suspicious online connections in good time, prevent private data from being spied on and make your PC virtually invisible thanks to stealth mode. You are also protected the other way around, for example, if malicious programs from the Internet try to penetrate your system and infect it, or if you reach dangerous websites. In addition, integrated identity protection prevents the theft of private data. In addition to the firewall software, you can optionally install free virus protection from ZoneAlarm.

ZoneAlarm Firewall Features

  • New Anti-Phishing Chrome Extension- Secure your online privacy
  • Proactively protects against inbound and outbound cyber attacks
  • Monitors for suspicious behaviours on your PC
  • Shields your operating system even during start-up

Comodo firewall

Comodo firewall
Comodo firewall

Comodo Firewall is another great option if you’re looking for a free Firewall, Comodo Firewall comes another free alternative to the system’s own Windows firewall. The tool protects you against viruses, malware and hacker attacks from the Internet by analyzing all incoming and outgoing data and immediately reporting unauthorized access to your computer or network.

Comodo Firewall Features

  • Sandbox for testing apps
  • Low resource usage
  • Needs configuring

Windows Firewall Control

Windows Firewall Control
Windows Firewall Control

Windows Firewall Control makes it easier to use the integrated Windows firewall. It is a free firewall, After starting the tool, all running programs are automatically blocked for the time being. If you really want them to run, you can manually unlock them. With Windows Firewall Control you can also specify which processes are allowed and which are not. In this way, programs are not allowed to access the PC or the Internet without your knowledge. You can override or edit the rules at any time if necessary.

Windows Firewall Control Features

  • Already installed with Windows
  • Low false positive rate
  • Lack of additional features

GlassWire Firewall

GlassWire Firewall
GlassWire Firewall

GlassWire Firewall is another great open source option if you’re looking for a free Firewall, GlassWire’s Network Monitor visualizes recent network activity by traffic type, application and geographic location. The network activity can be viewed up to 30 days so that you can also check which connections have been established in the past. In the graph, the details of the network activity can be consulted per program or event.

GlassWire’s incognito mode allows you to stop monitoring network activity. You can also delete all logged network activities at any time through the historical setting.

GlassWire Firewall Features

  • Stylish design
  • Easy to use
  • Limited features

TinyWall Firewall

TinyWall Firewall
TinyWall Firewall

TinyWall Firewall is another great option if you’re looking for a free Firewall, The firewall integrated with Windows is not bad, it just does not offer particularly user-friendly controls. Installed programs are allowed by default on the Internet. If you want more control, you can use the TinyWall.

TinyWall is only around 1 Mbyte in size, but it takes over the reins straight away and does not allow itself to be simply made an exception by installed programs. Known programs for which there are already firewall exceptions continue to run. We were able to use Chrome and Skype immediately in the test without interruption.

TinyWall Firewall Features

  • No annoying pop ups
  • Lightweight
  • Manual whitelisting

PeerBlock Firewall

PeerBlock Firewall
PeerBlock Firewall

PeerBlock Firewall is another great option if you’re looking for a free Firewall, With PeerBlock you can control which computers on the Internet your computer communicates with. By selecting appropriate lists of known bad computers, you can block communication with advertising or spyware-oriented servers. You can even have computers that are recording your p2p activities that have been hacked and even blocking entire countries! Enemy computers cannot access your computer, and your computer will not send any data to them.

PeerBlock Firewall Features

  • An excellent tool that can be modified to meet user preferences.
  • All information is displayed and recorded for future access if required.

Private Firewall


Private Firewall is another great option if you’re looking for a free Firewall, PrivateFirewall is a proactive, layered defence solution for Windows desktops and servers. It detects blocks and quarantine activities characteristic of known malware, hacking, phishing, and other threats. Its package inspection, URL filtering, anti logger, process monitoring, application/system behaviour modelling and anomaly detection components stop hackers, spyware, viruses and other forms of malware before they can cause damage. It’s a 3.5MB download.

Private Firewall Features

  • Multilingual Support
  • Basic Firewall
  • Identity Protection
  • Network Monitoring
  • Internet Security
  • Bandwidth Usage Monitor
  • Multiple Server Monitoring
  • Two-way Firewall
  • Remote Server Monitoring
  • Webcam and Mic detection

Evorim FreeFirewall

Evorim FreeFirewall
Evorim FreeFirewall

Evorim FreeFirewall is another great option if you’re looking for a free Firewall, With the Evorim FreeFirewall for Windows, the name says it all, because the tool is completely free and controls your data and network traffic in real-time. For this purpose, the running processes and services are shown in a clear list on which you can assign individual authorizations for each application. In Evorim FreeFirewall you define certain rules, which are then automatically applied to all sorted programs. If necessary, you can of course also allow or forbid access to all entries collectively.

Evorim Free Firewall Features

  • Telemetry Prevention
  • Web Tracking Protection
  • Botnet Blocking
  • Zone Rules

Ashampoo FireWall

Ashampoo Firewall is another great option if you’re looking for a free Firewall, Ashampoo FireWall FREE protects your internet connection in both directions. On the one hand, it blocks access to your computer from the Internet and, on the other hand, it prevents programs on your computer from gaining access to the Internet without your consent. To achieve this, you can define rules with a click of the mouse. The program permanently monitors the Internet connection. With this program, you have the choice between two modes – the Easy or the Expert mode. In the easy mode, the software is particularly easy to use, while the expert mode allows comprehensive configuration of the firewall.

Ashampoo FireWall Features

  • Correctly stealthed all ports and resisted Web-based attacks.
  • Resists termination.
  • Can hide the main process.
  • Includes several bonus tools.

Outpost Firewall

Outpost Firewall
Outpost Firewall

Outpost Firewall is another great option if you’re looking for a free Firewall, Outpost Firewall Free is a classic firewall. Nowadays, a PC with an Internet connection is attacked almost continuously by viruses, worms and other digital animals – adequate protection is of great importance. The program combines the advantages of the core functions of such a “protective wall” (control and recording of incoming and outgoing connections, monitoring) with an intuitive user interface.

Outpost FireWall Features

  • Simple and intuitive interface
  • Easy to block ads and certain content on websites.
  • File & folder lock feature blocks access to designated items.

Do you have any suggestions for quality free firewall software for home users? Tell us about them below comment box.


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