In the era of internet, every person is connected to internet from their personal computer, laptop, netbook, etc.  With the advancement in internet connectivity and speed, the rise in the number of internet threats lurking around you and your system. Internet is filled with threats like Viruses, worms, Trojan horses, bots, and spyware. You can protect your system by using an antivirus program. Antiviruses are capable of detecting problems and quarantine them. Still they are not capable of monitoring your network connection until and unless they come bundled with firewall program. Firewall is a piece of hardware or software that goes through traffic passing through your network. It can allow, or block pieces of data or packets based on some set of rules. So a firewall basically protects your network against unauthorized access. Now let us go through some free software available for your Windows Operating System.

ZoneAlarm Free Firewall


ZoneAlarm is one of the most popular firewall software available for Windows. It is capable of preventing your system against hackers, viruses, spyware, Trojan horses, worms, bots, and more. It protects your personal information from hackers and spyware. It provides security information for the sites you visit, thus making a convenient and safer web experience. It filters and blocks inappropriate websites, and also warns you while downloading inappropriate content. It is capable of working with almost all the antivirus software.

Note: ZoneAlarm is free for personal use only.

Download ZoneAlarm Free Firewall



ThreatFire is firewall solution from PC Tools. ThreatFire is able to protect your PC against attacks and threats by detecting malicious behavior. The malicious behavior may include keystrokes, and stealing your data. It is capable of protecting your system against all types of internet threats including spyware, adware, keyloggers, viruses, worms, Trojans, rootkits, buffer overflows, and other malware. It is also capable of working with almost all antiviruses.

Download ThreatFire

Comodo Free Firewall

comodo logo

Comodo Free is popular free firewall software for Windows. It is capable of monitoring communications between computer and internet. It prevents common hacking methods like port scanning. The firewall immediately alerts you when there is some malicious activity. It can also work with almost all antiviruses.

Download Comodo Free Firewall

Online Armor Free Firewall

online armor

Online Armor is another free firewall available for Windows. It is capable of detecting malicious activity, thus preventing your system from hackers and protecting your personal information.

Download Online Armor Free Firewall

Windows Firewall

Windows firewalls in older version of Windows were not so capable of detecting threats. But if you’re using Windows 7 and Windows 8, then the firewall supported by them is quite capable of monitoring your system against malicious activity and other threats.

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