Best Free Firewall Software 2015-2016

In addition to antivirus software, it’s good to have a working firewall that blocks incoming cyberattacks and manages the internet access of software on your computer, such as blocking outgoing traffic from malware or spyware that your antivirus may have missed.

Here I will briefly review some of the best free firewall options for 2015-2016.

# Name Protection Performance Usability CNET Rating PCMag Rating
1 Windows Firewall + TinyWall Excellent Excellent Below Average N/A N/A
2 ZoneAlarm Free Firewall Good Good Good 3.5/5 4.5/5
3 Comodo Free Firewall Good Good Good 3.5/5 4/5


#1 Windows Firewall + TinyWall

Windows Firewall + TinyWall

Personally I currently use the Windows Firewall, which comes with the Windows operating system. It has been improved since Windows XP and does provide good protection against incoming attacks and automatically blocks applications from accepting incoming traffic. What it does not automatically protect against is outgoing traffic, although that is something you can do by manually configuring the firewall settings, which may require some IT experience.

TinyWall is a third party tool that allows you to more easily manage the Windows Firewall and which programs have access to the internet. It also allows you to see more information about which programs are accessing the internet from your computer. TinyWall is basically an add-on for the default Windows Firewall which makes it more convenient to manage. TinyWall is 100% free, with no ads or pop-ups, there is no paid version either.

Homepage | Download TinyWall


#2 ZoneAlarm Free Firewall


I’ve used ZoneAlarm Free Firewall a lot in the past when the Windows Firewall was not very reliable, especially during the early Windows XP era. I don’t really have too many bad memories of ZoneAlarm. It does have the occasional pop-ups urging users to upgrade to the paid version, but from what I remember they were not too frequent.

ZoneAlarm also has a free firewall and antivirus bundle, in addition to the standalone firewall. I have not tested the antivirus myself, so I can’t really speak for its effectiveness although it did have fairly good ratings on

Features of ZoneAlarm Free Firewall include a two-way firewall that blocks both incoming and outgoing traffic, application control to manage internet access for specific programs, active monitoring of software behavior to better detect malicious programs, identity protection, browser protection, user-friendly interface and automatic updates.

ZoneAlarm is listed as #1 on CNET Downloads in the free firewall category with a user and editor’s rating of 3.5 out of 5 stars, and a PCMag rating of 4.5/5 points.

Homepage | Download Zonealarm Free Firewall


#3 Comodo Free Firewall

Comodo Free Firewall

My personal experiences with Comodo Free Firewall are limited, I’ve used it a few times in the past but have not used the latest version. However in CNET Downloads it is listed as #2 in the free firewall category, with an editor’s rating of 4 out of 5 stars and the user rating was 3.5 out of 5. PCMag rated Comodo Firewall 8 as excellent with 4 out of 5 points.

Features include application control to manage internet access for specific programs, personalized firewall alerts, cloud based white listing to identify safe software, game mode which suppresses alerts while gaming or watching movies, a user-friendly interface, automatic updates and auto sandbox technology which can test software in a safe virtual environment.

The PCMag review did state that Comodo has a very aggressive behavior blocking feature which can produce many unnecessary alerts, however Comodo also allegedly has personalized firewall alerts which will remember your past preferences, so the alerts may decrease with time.

Homepage | Download Comodo Free Firewall


Bonus Software: PeerBlock


PeerBlock is another tool that you can use in addition to other firewall programs. PeerBlock basically manages who your computer talks to on the internet by utilizing downloadable lists of known IP addresses of potentially malicious computers. Such as adware or spyware oriented servers, servers that monitor internet activity and even lists of hacked computers used for cyberattacks.

Homepage | Download PeerBlock



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