ZoneAlarm Free Firewall

Protect your PC with the world’s best firewall solution

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Over 20 million downloads worldwide

zonealarm pro firewall computer
World's leading firewall solution for over 20 years
Get protected against inbound and outbound cyber attacks
Block unwanted traffic and control program access to the internet
Become invisible to hackers and guard your personal data
ZoneAlarm Pro Firewall - The Ultimate Choice for Optimum Control

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ZoneAlarm Pro Firewall
ZoneAlarm Free Firewall
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WiFi PC Protection

Monitors programs for suspicious behavior and shields you from hackers, identity thieves, and other online threats when you connect to an unsecured network.

Traffic Monitoring

Our two-way firewall monitors the traffic entering and exiting your computer network, making your PC invisible to hackers and stopping spyware from exposing your data to the internet.

Early Boot Protection

With Early Boot Protection, your PC can detect whether it’s running a trusted operating system or a dangerous rootkit, hence protecting your computer.

Identity Protection

Helps prevent identity theft by guarding your personal data; alerts you daily of any changes to your credit report, which often indicate identity theft. (US only)

Anti-Phishing

Protects your private information from phishing attacks while you browse online. Scans URLs to prevent you from entering your personal information on websites that are known to carry security threats. (Included in Web Secure Chrome Extension).

Safe Document Download

Uses Zero-Day Protection to remove potentially malicious features from file downloads, such as macros, embedded objects, and other malicious content. (Included in Web Secure Chrome Extension).

Advanced-Access Protection

Targets and defeats new and advanced attacks that other firewalls miss, such as raw data access, timing, and SCM & COM.

Advanced Settings Control

Allows you to classify your home as a private zone and untrusted networks as public zones, thus increasing the security of your computer on the network and reducing potential attack vectors.

Component Control

Protects against tricks that malicious software can use to bypass personal firewall as it loads potentially malicious DLLs into a trusted application, bypassing application control and accessing the network freely.

Expert Rules

Allows you to control and configure the firewall to get maximum security.

24/7 Online Support

For billing, technical issues, and any help you may need. Learning Center, forums, and in-depth information are also available on the website.

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ZoneAlarm Free Firewall
Free
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ZoneAlarm Pro Firewall
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Powerful first line of defense

ZoneAlarm Pro Firewall gives you full control over your firewall, enabling you to configure it to your security needs by classifying your network settings. It targets and defeats new and advanced attacks that other firewalls miss, giving you maximum security against zero-day attacks.

Advanced Firewall

Monitors programs for behaviors within your computer to spot and stop even the most sophisticated new attacks that bypass traditional firewall. Proactively protects against inbound and outbound attacks while making you invisible to hackers.

threat extraction clean

Identity Protection

Provides superior PC-based protection and exclusive data encryption, including offline identity-protection services. Moreover, Identity Protection monitors your credit report daily to see if any changes occur, keeping you alert of fraud, and provides you with recovery services if your identity had been stolen.

threat extraction secure files

Anti-Phishing

ZoneAlarm Anti-Phishing protects your private information from a phishing attack while browsing online, securing your personal information from hackers and malicious websites. It scans all websites before letting you insert any personal information and alerts you whether it is a safe website or a phishing attempt.

threat extraction keeps original documents

World's Best Firewall

"Gives you all the protection of the company's free firewall, plus advanced features, premium support, and innovative phishing protection"
Excellent
PCMag Editor's Choice

The world's best firewall, tailored to your needs.

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System requirements

  • Microsoft® Windows® 7, 8, 8.1, 10 All versions
  • 32-bit / 64-bit, 2 GB RAM
  • 2 GHz or faster processor
  • 1.5GB of available hard-disk space
  • Microsoft .NET framework
  • Version 3.5 or later
  • Note: If a supported Microsoft .NET Framework is not installed, it will be installed with ZoneAlarm
  • Web Secure Chrome Extension
  • Google Chrome (All versions)

ZoneAlarm is only compatible with MS Windows Defender, and is not compatible with any other anti-malware software.

To install ZoneAlarm, you must first uninstall other anti-malware software. Otherwise, you may experience OS stability and computer performance issues.

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