2023 • The Best Free Firewall Software to Fortify Windows PC

When it comes to computer security, we place a lot of emphasis on antivirus. But, there’s one more piece of the pie that we can’t ignore – Firewalls.
  1. A firewall is a barrier that sits between your computer and the Internet. It filters unwanted traffic or activities in order to safeguard your PC against hackers and cyber-criminals.
  2. Windows comes with a perfectly fine built-in firewall. However, a third-party firewall software will make it easy to configure rules and offers better security.
  3. This blog offers an in-depth look into the top free firewall software available for Windows PC, guiding you through their key features and benefits. Our aim is to provide clarity and insight, ensuring you choose the firewall most suited to your needs and expertise level.

Did You Know? Did you know that the term “firewall” originally referred to a wall constructed to halt the spread of fire within a building. In the digital world, it prevents the “spread” of cyber threats!

Guarding Your Gates: The Top Free Firewalls for Windows PC in 2023

How We Tested? Firewalls are arguably one of the cumbersome software products to use and have a reputation for causing user angst. We evaluated each free Firewall software for functionality, ease of use, performance, and reliability on our test system running Windows 10.

After a lot of trials and testing, we bring you the top free firewall software available on the Internet today!

OS Compatibility – Windows 11, Windows 10, Windows 8, and Windows 7.

1. Malwarebytes Windows Firewall Control

Malwarebytes Windows Firewall Control
eScore 84 percent
Lightweight but mighty: Turbocharge your built-in Windows firewall with no fuss!

Lightweight Powerhouse: Who says you need something hefty to deliver a punch? Malwarebytes Windows Firewall Control is like that lightweight boxer who dominates heavyweights in the ring. It enhances the existing strength of the Windows firewall without overwhelming your system or your senses.

One-Click Wonders: The digital age is all about speed and efficiency. Whether you want to grant a Windows program the golden ticket to the online realm or ground it for being too naughty, a simple click has you covered. Think of it as the express lane on the cybersecurity highway.

Rule Creation Simplified: Rules make the world go round, especially in the digital sphere. With this nifty tool, you can create, modify, or discard Windows Firewall rules as easily as changing TV channels. And if you’ve got some rules you’d rather keep under wraps? Slap on a password and sleep easy.

Tamper-Proof Design: There’s nothing more annoying than nosy neighbors or, in this case, sneaky programs trying to mess with your firewall’s groove. Malwarebytes ensures these digital gatecrashers are kept well away from your settings. It’s like having a digital guard dog without the barking.

Beginner-Friendly: Tech jargon can be daunting. But fear not! Malwarebytes Windows Firewall Control is as user-friendly as your favorite childhood toy. With an intuitive interface just a tap away in the system tray, even tech newbies can navigate with the confidence of seasoned pros.

System’s Best Friend: Ever had a program that feels like it’s hosting a never-ending party on your computer, hogging all resources? Not this one. With support for global hotkeys and a focus on running only the essential processes, your system’s performance gets the VIP treatment. Imagine it purring in contentment.


2. TinyWall

TinyWall Firewall
eScore 82 percent
TinyWall: Boosting your Windows firewall, no expertise required!

User-Friendly Design: TinyWall isn’t here to confuse you with techy gibberish. Designed to bolster Windows’ own firewall features, it keeps things straightforward, so even if “firewall” makes you think of an actual wall on fire, you’re in safe hands.

Smart Scanning & Security: Keeping a vigilant eye, TinyWall scans both inbound and outbound connections, ensuring top-notch security. Plus, with its auto-learning mode, it’s like your firewall went to Harvard and graduated top of its class. And for those super-secret settings? Password protection has got you covered.

Application Insights & Control: Ever wondered which programs on your PC are playing it safe? With an integrated application scanner, TinyWall identifies and lists those that can be added to your digital VIP lounge. It’s like having a bouncer for your computer’s exclusive club.

Monitor Connections Like a Pro: Keep tabs on the digital chatter of your PC with the Connections monitor. It displays all the active Internet-loving processes and those chatty open ports. Plus, with the ability to handpick a process, file, or service, you can grant them firewall permissions. These permissions can be either permanent or temporary based on your preferences.

Guard Against Digital Nasties: TinyWall isn’t just about letting the good guys in – it’s also about keeping the bad guys out. With its feature to block notorious virus and worm hubs, it’s like having a digital pest control on duty. And those sneaky attempts to change the hosts file? Denied!

Clean & Quiet Program: No one likes being bombarded with endless notifications – and TinyWall knows it. With a neat and tidy interface, it remains discreetly in the background. And while it doesn’t overload you with features, it ensures alerts are fuss-free. A word of caution: TinyWall might prove elusive even with popular Windows apps. If you find that a specific program, which requires Internet access, is not functioning correctly, take a moment to inspect the firewall settings.


3. ZoneAlarm Free Firewall

ZoneAlarm Free Firewall Software
eScore 81 percent
ZoneAlarm is trusted by time, championed by millions!

Time-Tested Guardian: ZoneAlarm Free Firewall isn’t just any newbie on the block. Having stood the test of time as one of the most popular and longstanding free firewall choices for Windows, it’s like the grandmaster of digital doormen.

Stealth Mode & Smart Defense: Hiding open ports and sidelining shady traffic is ZoneAlarm’s sneaky way of ensuring you’re protected. And with a direct line to DefenseNet, it’s always in-the-know, getting real-time updates about new online boogeymen.

Internet Access Bouncer: Ever wished you could have a say in which programs get to party online? With ZoneAlarm, you’re the DJ, deciding which applications get to groove on the Internet’s dance floor.

Public WiFi Shield: Venturing out into the wild world of public WiFi? ZoneAlarm adds an extra coat of armor, ensuring your connections remain as secure as Fort Knox, even when sipping a latte at your local coffee shop.

Home WiFi Auditor: It’s not just about guarding the gates but also about reinforcing the walls. ZoneAlarm evaluates your home WiFi’s security levels, suggesting tweaks to keep digital intruders at bay. Plus, those essential settings? Keep them under lock and key with password protection.

Easy-to-Use & Customizable: A straightforward and engaging interface means even the least tech-savvy among us can tailor ZoneAlarm to our liking. But a word to the wise: during setup, opt for ‘Custom Install’ and channel your inner detective – read each step to ensure only ZoneAlarm gets the nod. And while it’s mostly friendly, it might occasionally bicker with other antivirus programs. So, keep an eye out!


4. Comodo Firewall

Comodo Firewall
eScore 79 percent
Comodo Firewall is where advanced meets awesome in cyber defense!

Top-Notch Defender: When you want the crème de la crème of firewall security, Comodo Free Firewall is your guy. It’s like hiring a five-star general for your computer’s defense.

All-Seeing Traffic Monitor: Whether data’s coming in or heading out, Comodo’s eagle eyes are on it. Especially handy when sneaky malware tries to play courier with your private data. It’s the digital equivalent of a watchdog that never sleeps.

Smart AI Security: Comodo doesn’t just work hard; it works smart. By studying your computer’s day-to-day behavior, it learns to detect and block anything out of the ordinary. It’s kind of like having an AI detective, always piecing together the puzzle.

Rating & Sandbox Play: Ever wanted a report card for every process on your PC? Comodo’s Rating Scan does just that, grading them on their trustworthiness. And when you’re unsure about new software, the Sandbox environment lets you test it without any risks. Think of it as a digital playground with safety nets.

Bonus Bonanza: Beyond its primary firewall duties, Comodo’s like that Swiss Army knife you never knew you needed. Hardened browser, ad-blocker, game mode, secure DNS lookup, and even a built-in antivirus – it’s a feature-packed party.

For the Pros: Geared towards the tech-savvy, Comodo is a treasure trove for advanced users. If you’re new to the firewall game, it might feel like diving into the deep end. And a heads-up: during setup, it’ll try to give you some extra goodies you might not want. So channel your inner skeptic, and install only what feels right.


5. Evorim Free Firewall

Free Firewall Windows
eScore 76 percent
This free firewall for Windows PC offers full-throttle defense against the digital wild!

Guardian for Your PC: Evorim Free Firewall isn’t just any barrier; it’s a top-tier sentry standing guard, ensuring the big bad digital world doesn’t catch your computer off guard.

Traffic Cop for Apps: Every application wanting to take a joyride on the Internet? Evorim Free Firewall checks their licenses (so to speak). With various modes to pick from, you’re in full control of who gets to cruise and who gets the boot.

Automatic Threat Blocker: Out of the box, Evorim Free Firewall acts like that savvy friend who blocks unsolicited calls. It nips viruses and botnets in the bud by shutting down sneaky background data chats.

Color-Coded System Scanner: Imagine scanning all the apps and services on your PC and getting a colorful report. This best free Windows Firewall does just that, giving you a definite view of potential risks and safe zones.

Privacy Shield & Team Player Mode: While you’re surfing the digital waves, Evorim Free Firewall is on lookout duty, ensuring no sneaky trackers ruin your ride. Plus, in its Cooperative mode, it plays nice with the Windows Firewall or any other guard you’ve got up.

Touch-Friendly: Got fancy touch-sensitive devices? Free Firewall’s got your back with an interface ready for your swipes and taps. But a heads-up: it’s still polishing some of its edges. So, a bit of patience might be needed.


A Firewall Alone Is Not Enough!

Alright, tech enthusiasts and casual clickers alike, we’ve sashayed through the glamorous world of firewalls – and what a journey it’s been! It’s like we’ve just binge-watched a reality show where firewalls compete for the title of ‘Best Digital Bouncer.’ Whether you fancy a general who stands guard at your digital door, a watchdog that never sleeps, or a colorful bouncer who uses colors to rank guests, there’s a pick for you.

Remember, in the grand circus of the Internet, not all performers have noble intentions. Some might be sneaky pickpockets or mischievous clowns, and that’s where our stellar firewall contestants come into play! Keep those dodgy digital desperados at bay and let the legit Internet magic happen. Choose wisely, but don’t forget to have some fun along the way. And hey, if all else fails, at least you’ll have some snazzy new software names to drop at the next (virtual) cocktail party.

Note: While a firewall can guard against intrusions, it’s not a replacement for antivirus software, and you should consider running virus protection, whether you have a firewall or not. To maximize the level of security on your computer, you should: a. Use a firewall, b. Install antivirus software, c. Use a VPN service when connecting to public WiFi networks, d. Do not open email attachments or links from unknown sources, e. Use strong passwords for your accounts.

Also, please do let us know your views on free firewalls in the comments below.

Did You Know?

The proliferation of IoT (Internet of Things) devices, from smart fridges to connected thermostats, has dramatically reshaped our digital landscape. Recognizing the complex security challenges posed by these interconnected gadgets, the cybersecurity world responded with the introduction of next-generation firewalls (NGFWs). These advanced firewalls not only perform traditional protective duties but are also equipped with sophisticated features to handle the nuanced vulnerabilities of IoT.

Author: Nik is an experienced author with 14 years in software and tech, holding an IT Engineering degree and a Data Science Master's from Liverpool University. Disclaimer: This website's content is created by humans and refined by AI for better grammar, flow, and clarity.

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