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7 Free Firewall Solutions for Your Windows PC

windows firewall
Kathie Myers

The thoughts and opinions in this article reflect that of the guest author and not Colocation America. Colocation America felt that there were excellent points about firewall safety in this article and ask that you use this piece for educational purposes.

Stop imagining that the firewall built into your Windows computer is enough to shield you from various online threats. If you want to block viruses, trojans, rootkits, and other cyber threats, you should get a firewall for that purpose.

In this article, I created a list of the top ten firewall solutions that you can get without fishing for a dime out of your pocket. So, if you need some protection from the wild, wild west that we called “internet,” this list is for you.


This firewall solution is entirely free, and it doesn’t put restrictions on its advanced features, which is a far cry from some firewall software. TinyWall can safeguard your Windows operating system from various online threats. It blocks all types of suspicious programs that might compromise your data when you’re connected to the internet.


  • No pop-up ads
  • Offers real-time security notifications
  • Prevents apps from getting access to the LAN
  • Scans both outbound and inbound connections
  • Comes with host file protection
  • Offers Wi-Fi protection
  • Provides password protection to secure firewall settings
  • User-friendly due to its instant firewall configuration
  • Enables users to set timed firewall rules
  • Has a whitelist feature, which allows users to add trustworthy sites
  • Comes with customizable protection options
  • Features automatic learning mode

Another great thing with TinyWall is that it doesn’t eat up significant space in your hard drive because it’s only 1MB. It’s also very easy to install and use. It has hotkeys that are indeed user-friendly.

Comodo Firewall

firewall for windows

Credit: Comodo

In every blog article talking about the best firewall solutions that you can get for free, Comodo Firewall is always on the list. This free firewall is among the best security software because it enables users to include programs on the blocklist without hassle. 


  • Provides real-time alerts for suspicious files or programs
  • Features an AD Blocker
  • Offers custom Domain Name Servers (DNS)
  • Comes with a rating scan option to find out if an application is reliable or not
  • Has a virtual kiosk
  • Comes with a user-friendly sandboxing to check the spread of malware
  • Has specific and advanced settings

Be aware that when you install Comodo Firewall, your default homepage and the search engine will be changed. However, you can avoid this from happening if you deselect this option at the start of the software setup.


If you want advanced security software that can defend your Windows PC against inbound and outbound cyberattacks, install PeerBlock. This firewall solution blocks spyware, ads, malware, among others, instantly. 


  • Convenient to install
  • Protects your Windows operating system from unwanted traffic
  • Allows users to create their own blocklist
  • Enables users to view and clear history
  • Light on system resources
  • Ideal firewall solution for users who share documents and files regularly
  • User-friendly for people who are not computer savvy

PeerBlock does a great job of safeguarding your PC from potential dangers. Moreover, it works as soon as it’s installed on your computer.


NetDefender has tons of features that ensure your PC is safe from cyber threats. It also offers user-friendly settings and a simple interface that won’t give you a headache while you use the app. 


  • Doesn’t display pop-up ads
  • Very easy to use
  • Block apps and unwanted traffic from accessing the network
  • Enables users to block FTP connections
  • Simple to set up
  • Allows users to create and edit rules regarding access to IP address
  • Features port scanner
  • Shields your computer from connection manipulation

NetDefender is perfect for monitoring the activities of your Windows PC. It shows the system’s activity, as well as the past and present servers that your computer was connected to. In this way, it’s easier to check potential dangers and block them if needed.


GlassWire is your security buddy against all types of online threats. After installing this software, your PC will get protection right away. It blocks suspicious files and programs without any hassle.

firewall solutions for PC

Credit: PCMag



  • Notifies users when there are network-related changes
  • Comes with data usage monitoring
  • Monitors other computers in the network and alerts the user if any unknown devices access the network
  • Detects Wi-Fi hardware with a similar network name
  • Features a mini graph to check the system’s health
  • Has a user-friendly setting for network checks

This firewall solution has a simple interface that gets all its functions in an organized setup. This is a beneficial feature for security software that you can install for free.

OpenDNS Home

OpenDNS Home provides robust protection for your Windows PC. Due to its excellent security features, this software has become one of the most trustworthy DNS services nowadays, along with Google DNS and Cloudflare. OpenDNS Home defends your computer from various cybersecurity threats. 


  • Simple user interface
  • Easy to install
  • Provides several filtration options
  • Doesn’t meddle with existing security software
  • Comes with important phishing and botnet protection
  • Improves internet connection through its custom DNS service
  • Automatically blocks suspicious files and programs

There are over 90 million users of OpenDNS Home globally. Add to this the number of awards received for being the best free firewall solution in the world today.


When it comes to cybersecurity, ZoneAlarm is already a veteran in the game. It was launched in the year 2000, and right now has over 100 million users worldwide. This staggering number of users is proof that ZoneAlarm is a trustworthy and reliable firewall solution. 


  • Has an antivirus program
  • Features daily credit monitory (available only in the United States)
  • Has an interface that can be customized
  • Provides multi-layer security, such as public network and wireless network protection and security alerts
  • Comes with online backup
  • App and software protection
  • Scans both inbound and outbound connection
  • Blocks unwanted traffic from accessing the network

This firewall solution protects your PC from cybersecurity dangers, such as ransomware, malware, spyware, viruses, identity theft, phishing attacks, etc.

It’s time to shield your Windows computer from different types of cybersecurity threats. Get a free firewall solution that has robust security features and user-friendly settings to ensure that your PC is protected. Take note of this list if you want to have a firewall solution that you can get without spending a dime.

Main Photo Credit: MalCare

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