12 Best free Firewall Software for Windows In 2021

Everyone wants computer or device safety because nowadays security is important in our life. For this people looking for the best Firewall software, but they don’t know which software best for them. So that’s why we will come with a list of the Best FREE Firewall Software for Windows with their features and links. The list contains free software that you can use on your computer.

The main thing is that firewall is to protect against the trojans, malware, and Prevent Hackers. Although, firewalls can also block site system DNS information.

Top Free Firewall Software for windows

Free Firewall Software




·  It helps you to keep track of bandwidth usage by day, week, and month in detail with resolved hosts.

·  This software offers multiple remote server monitoring.


·  The report provides an integrated policy review.

·  You can create personalised security filters.


·  It protects your personal information.

·  Provides a safe navigation experience.


·   It provides quick and great online experience.

·   Manages PC traffic helps you block all kinds of Internet attacks.


·        Full IPv6 support.

·        Integrated port and domain blocklists.

·        Boot-time filtering.

·        Port-scan prevention.


1) GlassWire

GlassWire is a free network monitor & security tool with a built-in firewall. It protects your operating system from the beginning when you install it on your computer.  Although you can see your past and current network activity through this firewall software. Without disturbing you it detects spyware, malware, badly behaving apps, and bandwidth hogs, then it will immediately block the source.


  • GlassWire provides additional security to your computer by easily understanding all of your past and present network data.
  • This software offers multiple remote server monitoring.
  • It offers network security checkbox such as detection for changed system files, changed device lists and changes to ARP’s App Info.
  • It helps you to keep track of bandwidth usage by day, week, and month in detail with resolved hosts.

Price: Free

Wrapping up:  Overall, GlassWire’s allows you to see in real-time detailed network activity with your devices.

Link: https://www.glasswire.com/

2) Solarwinds

Solarwinds is a tool for enhancing the security of your network and keeping track of firewall activity. This makes it possible for IT teams to more quickly identify abnormal activities, such as a firewall connection or intrusion activity, such as port scans.


  • It monitors user activity, file integrity and Network Security.
  • To avoid security violations, you can optimise firewall configuration.
  • The report provides an integrated policy review.
  • You can create personalised security filters.

Price: Free

Wrapping up:  Overall, Solarwinds is a firewall log analyzer and management software to improve network security with a real-time firewall log analyzer

Link: https://www.solarwinds.com/

3) Zonealarm

ZoneAlarm is a free firewall to protect you against cyber attraction on your computer. It blocks unwanted internet access for programes and network traffic. Free firewall ZoneAlarm can prevent malicious system changes by locking the file of your host. The password can also protect your settings against unauthorised changes.


  • It protects your personal information.
  • Provides a safe navigation experience.
  • Provides protection against Wi-Fi.
  • It allows you to search and alert you to hazardous sites safely.
  • Documents can be safely downloaded online.

Price:  Free

Wrapping up: Overall, ZoneAlarm is a very good perimeter solution and is free to use. It is not just a firewall but has built-in Antivirus as well. You can use it in your offices, and enjoy game playing without interruptions which are good and fully protected software.

Link: https://www.zonealarm.com/software/free-firewall

 4) ManageEngine Firewall Analyzer

ManageEngine Firewall Analyzer is a firewall management software that helps you detect firewall security vulnerabilities. It provides network firewall security visibility in real time.


  • Effectively manages firewall policies
  • ensures the management of policy changes.
  • Monitors users VPN and web activities.
  • Monitoring and generating various compliance reports continuously.

Wrapping up:  Overall, ManageEngine Firewall Analyzer is agent-less firewall, VPN, Proxy Server log analysis and setup software to monitor intrusion detections…

Price: Free

Link: https://www.manageengine.com/products/firewall/

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 5) Comodo

Comodo is one of the best free firewall solutions for ensuring and maintaining the experience. The tool provides users with a quick and easy online experience.

  • It provides quick and great online experience.
  • Manages PC traffic helps you block all kinds of Internet attacks.
  • DDP-based security update you time to time and secure your PCs.
  • Ensures all links when you are online.
  • Connection monitors in/out.

Price:  Free

Wrapping up: Overall, Comodo compatible with all current Windows systems. With a variety of related security features for any business options.

Link: https://www.comodo.com/home/internet-security/firewall.php

6) TinyWall

TinyWall is one of the best windows based free firewalls, it protects you against all kinds of Internet threats. The software prevents your computer’s ports against hackers and blocks dangerous programs that can expose your sensitive data on the Internet.


  • No disturbing popups and easy setup.
  • Provides protection of the firewall.
  • Full IPv6 support.
  • Support for temporary/timed firewall rules.
  • Integrated port and domain blocklists.
  • Boot-time filtering.
  • Filtering of promiscuous apps.
  • Port-scan prevention.
  • Set up auto-learning function to create exceptions easily.
  • Configuration lockdown
  • Temporary firewall support support
  • Protection of file host
  • Provides the possibility to limit an application to the LAN

Price: Free

Wrapping Up: Overall, Tinywall is the best windows 10 based firewall software that protect you against all kinds of internet threats.

Link: https://tinywall.pados.hu/

7) Netdefender

Netdefender is a free firewall that is easy to use software that includes all of the basic functions of a firewall and is extremely simple to install. It has easy settings and various options. The best part is that with one click of a button you can block unwanted incoming traffic.


  • Surprise-free setup and clean interface
  • Block traffic and view processes trying to connect to the network
  • It is possible create, edit or delete rules with just a few clicks.
  • It is a packet filtering Firewall.
  • Tool enables you to block or allow all incoming and outgoing traffic,
  • User can modify and Remove already added rules.

Price: Free

Wrapping up: Overall, the NetDefender is a useful free firewall and the interface is suitable for all categories of users. Although the response time is very good and the good computer performance.

Link: https://www.softpedia.com/get/Security/Firewall/NetDefender.shtml

 8) Untangle

Untangle NG Firewall delivers comprehensive, enterprise-grade network security and connectivity. You will quickly gain safety, visibility and traffic control on your network during your 14-day free trial. Try it today and see how Untangle takes network security complexity out.


  • Easier management of your scattered networks from a single glass pane
  • It provides a browser-based, responsive and intuitive interface
  • It enables you to quickly gain visibility into the traffic on the network.
  • It’s one of Windows’ best free firewalls for managing your backups, logs, permissions and renewals.
  • Integration into safety endpoint partners

Wrapping up:  Untangle NG Firewall makes network safety easier by providing a single modular software platform to meet your organization’s evolving needs.

Price: Free

Link: https://www.untangle.com/untangle-ng-firewall/free-trial/

9) Evorim

Evoriam is one of the windows 10’s best free firewall software to detect threats and protect your website’s privacy. It is enables or deny access to the Internet for every programe on your computer.


  • prevent invaders of your website from accessing your computer.
  • Regulate network and Internet access according to a particular application
  • You will immediately get a notification to a non-authorized programe that wants to access the Internet
  • Protects internet users by using cookies and other techniques against tracking and monitoring.

Price: Free

Wrapping Up: Overall, Evorim is best software its ability to generate hardware, software, and virus behaviour reports with exact details.

Link: https://www.evorim.com/en/free-firewall

10) AVS4You

AVS is an best free firewall intuitive application to protect your computer from hacker and intrusion during internet surfing. To control your local network and Internet connections you can create your own profile, obtain detailed information on all internal and external connections to your PC and the statistics.


  • Secure your PC against malware.
  • Protect the registry from your PC whenever there is a suspicious.
  • Use the URLs that you do not want to display in a blacklist.
  • To limit access to unwanted websites, apply the content filter.
  • Create your own rules that set your own detailed rules.

Price: Free

Wrapping Up: Overall, AVS4you Firewall software is best that block ad banners and secure PC registry.

Link: https://onlinehelp.avs4you.com/avs-firewall/index.aspx

11) PeerBlock

is an software that you can use to block your access to both outgoing and incoming connections. You can also create or import custom lists or you can connect the computer always, even when blacklisted, via the ports 80 and 443.


  • It did not hang, crash or pop up error dialogs.
  • Its intuitive layout, less experienced.
  • Users can quickly figure out how to work with PeerBlock.
  • You can see a history list or clear the log file.
  • With single click you can enable and disable peerblock’s status.

Price: Free

Wrapping Up: Overall, PeerBLock is an amazing software to block your access to both in and out connections. You can easily handle this application.

Link: https://softfamous.com/peerblock/

12) Privatefirewall

Privatefirewall is an Frewall application that enables you to add additional system security measures. The main advantage is that it enables you to avoid computer intrusion and to protect against information robbery. It offers you a user-friendly interface.


  • Multiple tools to work with application manager, a process monitor, port tracking, and traffic filtering.
  • For home, office, and remote access, you can set different protective profiles.
  • You can easily customize the Internet and network security. 
  • The access to web pages found in the blacklist will automatically be blocked.
  • It tracks all system ports and prevents unauthorised entries.

Price : Free

Wrapping Up: Overall,  Privatefirewall monitors system behaviour, identifying potential threats. It protects your private data and makes it easy to customize internet security settings and untrusted websites.

Link: https://www.softpedia.com/get/Security/Firewall/Privatefirewall.shtml

Frequently Asked Questions

1) What is Firewall?

Firewall is a network security device that tracks and regulates incoming and outgoing network traffic and blocks dada packets based on default security rules. A firewall is essentially the barrier that sits between a private internal network and the public Internet

2) What Firewalls Do?

It monitors the activities to access your OS and blocks unwanted traffic or unknown sources. It helps to protect your network and information through network traffic management also its blocked unwanted incoming network traffic, and validating access by evaluating network traffic for anything malware.

3) How does a firewall work?

Firewall work great that includes the below methods.

  • packet-filtering: Control access to the network by analysing incoming and outgoing packets
  • Stateful Inspection: is also known as dynamic packet filtering and it is a strong firewall architecture that searches traffic from end to end.
  • Proxy Server Firewalls: It protect network resources effectively by filtering application layer messages.

4) What does the firewall check?

A Firewall is a network security device, which monitor and filters entry and exit traffic on the basis of previous security policies of an organisation.

5) Do firewalls prevent viruses?

Yes, Its not only blocks unwanted traffic but also helps to block the malware software and worms from infecting a computer.

6) What are the best Firewall Software?

  • Solarwinds
  • Tinywall
  • Comodo
  • Evorim
  • GlassWire

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