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The readers like you support PrivacySavvy to help keep up the good work. When you purchase using links on our website, we may earn an affiliate commission at no extra cost to you. Learn how PrivacySavvy. Many people think the built-in firewall that their Windows, Android, iOS, and other operating systems have is enough.
Although that is not the case. But do not worry, you need no extra cash for an additional firewall software; there are some best free firewalls you can install. However, before you get your hands on top-notch free firewall programs , it would be best to cover the basics first.
A firewall is a software or hardware that prevents hackers and certain types of malware from gaining remote access to a computer over the world wide web. Its purpose is to verify information received from the Internet or a local network and to block or allow access to a computer. Firewall programs protect against internet worms and hacker attacks, while anti-virus programs provide protection against viruses as the name suggests , and anti-malware applications shield your device against malicious programs.
If you have a computer that connects to the Internet, you need a firewall. As simple as that given that you value your online projection. Think of a firewall as a barrier between the data on your computer and the outside world; it is a kind of door lock for your home, office, or vehicle. Even if you have spyware, anti-virus trackers and keep your computer up to date, someone could still access your information if you do not have a firewall installed. In its recently conducted study , MaketsandMarkets predicted the market of the Network Security Firewall to grow to 5.
No market cannot grow that much without some practical reasons. There are many reasons for the Firewall Market growth. However, most people today are turning to firewall protection for safeguarding their important data or sensitive information.
And you must understand that you are at high risk of getting your information stolen if you do not have a quality firewall program installed. Your password is like your fingerprint on the internet. It allows you to access all your accounts. Hackers can destroy your personal and business life if they can manage to get their hands on your password.
These computer jocks have three basic methods of obtaining your password: guessing, brute force, and cracking. Cracking is the most effective method as the hacker searches for your passwords saved on your computer using high tech tools.
A firewall can prevent them from being able to access these files and your personal data from leakage. In some cases, a hacker or hijacker has no interest in stealing your information; they simply want to cause you as much misery as possible. Because malicious people often do not care about your feelings or data. Through a DOS, denial of service attack, they can freeze your system to the point that servers, computers, and networks go down.
Imagine what could happen to your business if your client list, sensitive business plans, or trade secrets were available to the world to see. All in all, there are many ways that hackers can use to access your information when your device is connected to the internet. I have not even explained half of the ways with which the hackers can make your life miserable, just keep in mind that they can defeat your defenses and cause a lot of damage.
The firewall is a system that ensures network security by filtering outgoing and incoming network traffic. Firewall filters the traffic based on a set of rules defined by the user. In general, the function of all the firewalls let it be a complex firewall used by big corporates or a simple personal computer firewall is to only allow legitimate communication to flow and to eliminate or reduce the occurrence of unwanted network communications. There are two basic classes of firewalls: client firewalls and firewall computers.
These two firewall classes can prevent unwanted access to the computer. A client firewall is a software that resides on the computer itself and monitors all incoming and outgoing network traffic of that device. A firewall computer is a physical device connected between the internet and the computer. These devices are often used in small network environments where multiple computers must share the same internet connection.
Small routers in many homes and offices often have integrated firewalls. If you use a router, make sure you have a firewall. Users who physically move let say you go outside even for grocery should always have a client firewall installed on their device. When we connect to the internet outside the office or home, we cannot take risks — connecting to the internet in public is always dangerous.
While antivirus software is an excellent means of protection, deploying firewall security on your device can be the needed hook that leaves the attackers out of combat. Companies that opt for the installation of such a protection system enjoy the following advantages:.
With a Firewall installed, an organization can block user access to unwanted websites and gain reports on non-productive activity to limit them for its benefit. Nowadays, companies cannot afford to down even for a while because the workers mostly use applications hosted in the cloud to perform their job functions. Intruders who sneak into a company can cause a network crash that a quality firewall could have anticipated and avoided. Firms of all sizes must invest in a business-grade firewall system to protect their data, network, company security.
The cases of hacking keep on occurring and we have witnessed many times that the hackers succeeded in stealing data that is critical for the operation of a company. Admittedly, selecting firewall security software can be a tedious task. Here I cover three vital aspects to consider before opting for a firewall:. Cost is a key factor when going with a firewall. Professional firewalls are expensive however personal firewalls are cheap, and sometimes you can get them for free. Understandably, the cost has a direct effect on the properties and functions of a firewall.
You are most likely to find a good personal firewall software with excellent functionalities for free easily than a corporate firewall the list I compiled below boasts all the best free ones I tested. The best firewalls should be reliable, consistent, and perform traffic analysis and filtering perfectly.
There should be no security holes in the firewall, it should alert if unauthorized access attempts come into play and should react automatically. Preferred features include the ability to control and detect threats, update threats based on cloud technologies, prevent intrusions, and the ability to integrate well with the environment. Now that we have covered all the basics, it is time to jump onto the best free firewalls available for you to use today.
Here you go:. PeerBlock is the successor to PeerGuardian which is only actively supported on Linux. It blocks incoming and outgoing internet connections of IP addresses that are blacklisted on the internet. PeerBlock has several functions and it keeps on offering more to the users for free. These include a constantly updated blacklist managed by the home site and a manager that allows you to select the lists that should be used. The program allows the user to enable and disable IP and HTTP trackers, as well as a log indicating the time, source of the IP address, destination, and protocol of the tracker.
You can also customize the interface of the program, as well as its activities. In those years, it was one of the most famous, most effective, and most complete of all that we could find. By default, it is configured to offer the best configuration for most users, but you want, you can take make security tweaks and configure it as you like.
It has several security modules and even boasts a game mode that turns off the firewall when a user plays games so that there are no connection problems. If what you are looking for a lightweight PC firewall solution , then you should try TinyWall. One megabyte is all the space you need on your hard drive to make it work as TinyWall operates as a standalone program. TinyWall is also an excellent choice if you do not want to constantly manage the application: there are no warning pop-ups as it works in the background without overwhelming the user.
As for the options you get with this totally free firewall software, it offers a white list, blocklists by port and domains, application access restriction, IPv6 support, password locks, and much more. The Comodo firewall has been one of the best free firewalls that one can use on the PC. It monitors all traffic on your computer, analyzes connections, and protects from all kinds of security threats.
Comodo firewall is a real gem for those who care about their safety while connected to the web. It has a complete database and integrates with the cloud to protect users from even the latest threats.
Apart from a free version, Comodo offers a premium firewall, too. The premium version is not actually a firewall only, it rather is a complete security suite offered by the company. This firewall has advanced features, such as the ability to run new programs in the sandbox, black and white lists, and besides, it is one of the easiest alternatives to use in place of the built-in Windows firewall. Sophos XG Firewall is a rising star in the cybersecurity industry, and its excellent business security software is also available for home use.
This security system is extraordinarily advanced over standard firewall software. In essence, you get all of the system security controls that you would use for your business, but not for your home network. Sophos XG Firewall Home Edition is a fully equipped software version of the Sophos XG firewall that is available at no cost no strings attached for home users. AVS Firewall is different from its counterpart as it comes with additional modules of protection including registry, pop-up blocker, parental controls, and more.
This firewall does not offer much customizable, but it offers many standard features and add-on modules. Each function in the program interface is performed quite smoothly. Its alerts also provide clear and concise information.
It supports Windows XP, 7, 8, and Vista. The first one is the registry protection module, which provides control and security of the registry for modifications preventing malicious registry changes , with the ability to configure specific sections. Next, there is the parental control module; as the name implies, limits the available list of sites for kids, but you need to manually add each site.
Then, there comes the Module problem in logic , with which you can specifically allow certain websites alongside blocking individual sites. AVS Firewall also comes with a monitoring utility , which allows users to check the size of the passing network traffic for each application.
During the installation of this free firewall, the installer automatically installs the AVS secure browser. In general, AVS Firewall is a pretty good firewall that will appeal to those who need additional security compared to basic firewalls , and who do not want to dive deeper into the specifics of the network device. This is a good free firewall software option for users who want to have a flexible protection setting without sacrificing ease of use.
Its interface is organized carefully and seems to have retained its functionality well an average internet user can cope with it easily. For example, the program boasts simplified alerts, but also efficiently functional, so you quickly apply actions and easily configure rules.