10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC 

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC, you have come to the right place. Take a look at some of the best software-based firewalls available for Windows.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

Anyone who has used a computer has heard of something called a “firewall”. While most people know what a firewall is, we can’t say the same to everyone. In simpler words, a firewall is a system that aims to prevent unauthorized access. You can get a free firewall and protect your computer.

It could be unauthorized access to or from a private network. The firewall is implemented through the use of software, hardware, or both. Depending on how much security the user is searching for.

Firewalls are in place to protect unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. Windows has its own firewall and there are many other programs, in addition to hardware-based options.

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What is a firewall?

A firewall is a program that is used to improve the security of your computer. This tool prevents your computer from being accessed by an unauthorized source. It also filters network traffic and protects your computer from DoS (Denial of Service Attack) and DDoS (Distributed DoS) attacks.
A firewall is just a “wall of code” that checks incoming and outgoing data packets. Please note that a firewall cannot be used as a substitute for an antivirus.

10 Best Free Firewalls of 2021 for Windows 10/8/7

ZoneAlarm: Best Free Windows 10 Firewall Software

I will be honest, ZoneAlarm firewall is the first firewall that comes to my mind every time someone brings up the word “firewall.” I guarantee that the same goes for a lot of people who are reading this.

ZoneAlarm Free Firewall is one of the oldest firewalls available for users to download; it introduces some advanced features that are otherwise missing from the stock option. It can protect your computer from any unwanted guests with great ease.

  • The firewall can hide open ports.
  • The firewall also looks for malicious traffic and protects against it.
  • It can disable also disable programs that are not in the trust.

These are just a few of the amazing features you get with the ZoneAlarm free firewall; if you are not curious enough already, the firewall will connect your computer to DefenseNet. That will allow the firewall to provide you real-time security updates against threats.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

Last but not the least, it can also protect your computer if you connect it to a wireless network. I did not run into any issues with ZoneAlarm Free Firewall, so I can assure you that it is among the best free firewalls out in the market.


File sharing is essential, and we all know it. Whether you are doing a physical file share or doing it over the internet, the risk is always there. Especially if you are sharing files with someone you do not know very well; after all, it is the internet.

If you are a heavy file sharer, and you worry about your safety, start using PeerBlock. It is a free firewall that is available for Windows at the moment. It is explicitly targetting the people who like to share their files or have someone else send data to them.

The primary purpose of PeerBlock is to protect the user from the traffic that comes their way from IP addresses that are not trusted.

  • PeerBlock protects unwanted traffic from user-specific IP addresses.
  • It is completely free.
  • The firewall does not take a lot of resources.

The reason why PeerBlock is on the list is that it focuses on something specific rather than going all out on security. It plays well with other firewalls on the computer as well. Most importantly, it does not act as a resource hog, allowing you to use your PC effectively.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

Setting it up is extremely simple; upon installation, you are asked about the websites or IP addresses you want to block. PeerBlock then updates the list every day to make sure your PC is secure.

Comodo Free Firewall

Comodo Free Firewall is easily one of the best free firewalls available to download because of the smart implementation. Although it is a proper firewall, it also comes with a browser in the installation package that you can install if you please.

The purpose of this firewall is to provide you a sandboxed experience when it comes to exploring the internet. If you are a person who visits a lot of websites in a day, then using Comodo Free Firewall is a good idea because you get a sandboxed version of browsers.

  • Creates a sandboxed version of the browser you want to use.
  • Allows the user to add other programs to the sandbox for maximum security.
  • The firewall offers easy control over permissions.
  • Comodo Free Firewall has a very good implementation going on for it; the firewall itself is easy to use, and you can even get a sandboxed environment right on your computer. Everything is super easy to handle and does not take up a lot of resources either.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

It has a website filter allowing you to block websites you do not want someone to access, and monitors that help the software keep an eye on suspicious activities and programs.

TinyWall – Best Lightweight Firewall Software

Unlike some of the other firewalls that I have taken a look at so far, TinyWall does things a lot differently. Instead of giving you popups now and then, TinyWall does not act as a firewall itself. Instead, it gives you a lot more options on the default Windows firewall.

Now a lot of people may wonder why that is important; Windows firewall is good as it is, but with the features and options you get using TinyWall, it becomes even better. I am writing some of the additional features down below.

  • TinyWall offers hotkeys for the majority of functions.
  • Allows you to whitelist or blacklist IP addresses and websites.
  • The firewall does not have any unnecessary pop-ups.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

TinyWall is perhaps the most straightforward software in the entire list; unlike the others, it does not rely on brute force. It takes something that is already there and makes it even better. This way, you do not have to think about whether or not your Windows firewall is good enough.

Since it does not introduce any other change, the overall size and resource requirement are low, allowing you to run it on almost any computer.


Open DNS is not a software-based firewall at all. Instead, it is a simple method that will change the way your router handles incoming and outgoing data. There are some neat but straightforward changes that you will be made to your router.

The changes will allow your router to connect to the internet using the Open DNS servers rather than the usual ones. This means that one small change will apply to the entire number of devices that you have connected to the internet.

  • Open DNS is completely non-intrusive.
  • The change applies to all the devices connected to the same internet.
  • Automatically blocks non-trusted content and websites.
  • Open DNS provides a lot of filtration options.

While you may have doubts about Open DNS at the start, there is no denying that it gives you excellent control over how you want your internet to behave. It is a simple change, and once that is in place, you no longer have to worry.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

Since there is no download link to it, the link below will guide you to the tutorial. You just have to use the tutorial on your central computer, and the settings will take get into effect across the entire network.


GlassWire is a relatively newer kid on the block, and even though the need for firewalls is always on a high, it is never too late to have something new. On paper, GlassWire is a simple networking monitoring tool. However, it does have some advanced functionality

With GlassWire, you get options to manually block the incoming, or outgoing traffic on your network, especially the one that you think is suspicious. The developer does not market as a full-blown networking security software, but it does work like one for the most part.

  • GlassWire provides efficient network monitoring.
  • The software is easy to use and simple to understand.
  • Uses a Windows firewall to do all the heavy work.

The good thing about GlassWire is that instead of having its firewall, it relies on the Windows firewall to do all the work. It does have its network monitoring tool, but it uses a Windows firewall to handle the blocking and unblocking side of things.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

Another important thing that I should point out is that despite having a free version, the firewall comes with three paid options too. Though, unlike some other firewalls, it does not force you to upgrade against your own will. So, you can be just fine with the free version too.


NetDefend is one of the more basic firewall programs available for download. It is free and has a pretty basic list of features. The good thing, however, is that it works well for what it is. The setting up can be quickly done, the interface is clean, and the software is free.

Sure, it does not bring most features to the table, but I appreciate the features that are available for the users to take full advantage of. The software can show the apps and processes that are trying to connect to the internet, allowing you to take action.

  • It is simple, convenient, and easy to use.
  • NetDefender allows you to block the incoming traffic, as well as block the apps from connecting to the network.
  • The firewall does not take a lot of resources.10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

NetDefender surely does not look like a firewall that can last much longer. However, it has been holding on pretty well. Quickly becoming one of my favorites on the list. The pure simplicity of this firewall is what makes it such a treat to use.

Outpost Firewall

As I am finishing up the list, I am wondering about how far the firewalls have become, and how important security on the internet is. All thanks to software like Outpost Firewall, things have become a lot easier than they once were.

The whole purpose of a 3rd party firewall is to make the overall user experience more comfortable and make firewalls more accessible to the general public. Outpost Firewall understands it well and makes everything more comfortable for the average consumer.

  • Outpost firewalls can allow or deny programs to access the internet.
  • The firewall also allows the user to add the specific IP address and ports for getting network access.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

The outpost Firewall is simple and works well in all instances. it does not require you to have a rocket science level of knowledge. It is free to download, and you can use it the way you want to use it.

Windows Firewall

Windows Firewall is going to come as a surprise to a lot of people, but the default Windows firewall has come a long way from the days of Windows XP. Back in the days of Windows XP, the same firewall was full of bugs that would render it useless.

Thanks to Microsoft’s close attention to detail, things are a lot different now. With Windows 10, the default Windows firewall is one of the best we can recommend. It is easy to use, comes pre-installed, and does not require a lot of getting used to.

  • Completely non-intrusive.
  • Easy to use and set up.
  • The firewall gets updated regularly.

Considering how it is a default Windows feature, the updates on it are regular as well. It can block pretty much every malicious program or website. Sometimes, it does get too aggressive, and start returning false positives though.

10 Best Free Firewalls For Windows 10/8/7 To Protect Your PC

However, it allows you complete control over how you want to use it, and the best part? You do not require any downloads, whatsoever.

Closing Words

Writing about firewalls is not easy. This is mainly because many people do not consider these great programs important. However, you must know that one of the main reasons to protect your computer from malicious activity is the firewall.

Whether you are a regular PC user or an enthusiastic user, you must ensure that your PC remains protected. A firewall does a great job and having the right firewall combined with the perfect antivirus will do the job.

Sometimes it can be difficult to decide whether or not to use a firewall, but I suggest you give it a try once to make up your mind.

Frequently asked questions about the firewall:

Listed below are the most frequently asked questions about firewalls.

Q # 1) What is a firewall?

Answer: A shield or barrier that protects a private network from unauthorized access, and a firewall secures devices connected to the Internet or another network such as a local area network (LAN).

The purpose of installing a firewall on a computer, phone, or tablet is to protect users from malware threats that are based on data on the Internet or other connected networks.

In cyberspace, data is transferred between your computer and servers, and routers. This data, which is transported in packets, is monitored by a firewall to identify and block any unwanted traffic.

The firewall accomplishes this by examining the data packets against the rules that have been set up. If the data packets comply with these rules, then firewalls will accept them. If they fail to meet the rules, the firewall either rejects them or blocks them.

Today, firewalls help protect computers and other connected devices around the world whether they belong to individual users, large companies, or the government.

Q # 2) How does a firewall work?

Answer: To put it simply, firewalls work by monitoring traffic to accept or allow “good data” while rejecting or blocking “bad or harmful data”. However, if we get into the details, the firewall will use one of the three methods or combinations to control the traffic flowing in and out of the network.

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