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Results for

firewall

Firewall

Firewall
Free to try

Firewall

Install the firewall and protect your computer from unauthorized connections.

Free to try
Publisher: Advance 3W Telecom Downloads: 3,518
Firewall

Firewall
Free

Firewall

Enjoy slideshow screensaver for Firewall movie.

Free
Publisher: David Mee Online TV Downloads: 3,035
Firewall

Firewall
$1.99

Firewall

*Now available for iOS and Apple TV with cross-buy*Firewall is a simple but addictive puzzle game where you must protect the core from incoming...

$1.99
Publisher: Hidden Games Downloads: 7
Firewall

Firewall
$2.99

Firewall

Tired of always playing by the rules? Now you can make your own! Firewall is a two-player tactical board game where you get to decide the rules.In...

$2.99
Publisher: Infomancers Ltd. Downloads: 7
ZoneAlarm Free Firewall

ZoneAlarm Free Firewall
Free

ZoneAlarm Free Firewall

Protect your PC from hacking attempts, spyware, bots, and other attacks.

Free
Editors' rating
User rating
Publisher: ZoneAlarm Downloads: 51,301,578
Comodo Firewall

Comodo Firewall
Free

Comodo Firewall

Protect PC from malware and Internet based attacks.

Free
Editors' rating
User rating
Publisher: Comodo Downloads: 1,542,749
USB FireWall

USB FireWall
Free

USB FireWall

Block viruses from a USB device.

Free
User rating
Publisher: Net Studio Downloads: 183,363
NeT Firewall

NeT Firewall
Free to try

NeT Firewall

Analyze and filter network packets to protect your system.

Free to try
User rating
Publisher: NT Kernel Resources Downloads: 83,162
Sygate Personal Firewall

Sygate Personal Firewall
Free to try

Sygate Personal Firewall

Protect your PC from hackers, Trojans, and malicious code intrusions.

Free to try
Editors' rating
User rating
Publisher: Sygate Technologies Downloads: 4,038,881
Armor2net Personal Firewall

Armor2net Personal Firewall
Free to try

Armor2net Personal Firewall

Protect your PC from Internet-borne threats, and stop hackers and data thieves.

Free to try
Editors' rating
User rating
Publisher: Armor2net Software Downloads: 3,474,410
Results 1 - 10 of 471

About firewalls

A firewall is an app or a physical device that protects you when you're using a local computer network. It can block attempts to gain unauthorized access to the network, and it can block unauthorized communication by hidden and/or malicious software that's running on your device.

  • Norton firewall settings screenshot

Firewall FAQs

  • Do you already have a firewall?
    Before you buy a standalone firewall app, check whether you already have protection:
    • Firewalls in Windows: Windows PCs from version XP onward have software firewalls built into the operating system. The Windows' firewall only attempts to protect you from things getting in, and it does so in silence, so don't feel bad if you've never noticed it.
    • Firewalls in Mac: Mac OS X also has a built-in software firewall. It's disabled by default, but then OS X doesn't have Windows-grade security concerns in most home-user scenarios.
    • Firewalls in routers, modems, and antivirus apps: Almost all home network routers have a built-in firewall, and so do many high-speed modems. Premium antivirus software also frequently bundles a decent firewall.
  • Do you need a firewall if you're on public Wi-Fi?

    While your home or workplace may be well-protected against digital intrusion, your local coffee shop may not have the best wireless security. Someone may also try to trick you into connecting to an unsafe public wireless network. In those scenarios, it's not a bad idea to have third-party firewall software running alongside or in place of Windows' built-in firewall.

    Public Wi-Fi users may also want to consider a VPN, which will create a private encrypted tunnel between you and the website you're visiting. That makes it hard for other people on the public network to snoop on your activities. Check out our VPN buyer's guide. For the best experience, you will probably have to pay a subscription fee to access a VPN designed for personal use.

  • Do firewalls fully protect you from malicious websites?
    While firewalls help protect your local network, a website can still trick you into giving it sensitive information. This is chiefly done by the site masking itself as a legitimate-looking bank or social media site. The URL may also be spelled similarly to the legit website. When you transmit your username and password to log in to an account on the fake website, its owners now have access (unless your account is set up with two-step verification).
  • Do firewalls anonymize you on the Internet?
    A router with a firewall uses a system called Network Address Translation (NAT) so that only the router's IP address is visible to the Internet, rather than the device that's connecting via the router. However, the router's IP address is still assigned by your Internet service provider, which keeps a log of when this IP was assigned and where. So if you want privacy, you'll still need an encrypted connection (indicated by the HTTPS prefix in your browser address bar) or a relay like the Tor network ( Windows, Mac, iOS, and Android).

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