ZoneAlarm Free Firewall

Two-way Firewall
Stops Internet attacks at the front door and even catches thieves on their way out. Our two-way firewall proactively protects against inbound and outbound attacks while making you invisible to hackers.
- Threat Traffic is monitored and blocked – inbound and outbound.
- Full Stealth Mode makes you invisible to hackers.
- Kill Controls instantly disable malicious programs.
Advanced Firewall
No product is 100% effective against viruses or spyware. ZoneAlarm’s advanced firewall monitors behaviors within your computer to spot and stop even the most sophisticated new attacks that bypass traditional antivirus and security suites.
- OSFirewall™ Monitors programs for suspicious behavior – spotting and stopping new attacks that bypass traditional anti-virus protection.
- Advanced-access Protection targets and defeats new, advanced attacks that other firewalls miss, such as raw data access, timing, and SCM and COM attacks.
- Zero-hour Protection prevents silent outbreaks from gaining system access – before other security programs can even detect the threat.
- Application Control uniquely shields your operating system during start-up, before most security products have even loaded.
- Early Boot Protection uniquely shields your operating system during start-up, before most security products have even loaded.
Additional Layers
Multiple layers of advanced protection provide unsurpassed security.

Anti-Spam filters out annoying and potentially dangerous emails.
Wireless PC Protection shields you from hackers, identity thieves and other online threats when you connect to an unsecured network.
Automatic Wireless Network Security detects wireless networks and automatically applies the most secure firewall protection setting.
DefenseNet™ provides real-time security updates, responds quickly to breaking threats and leverages threat data from millions of users – protecting your PC from the latest attacks.

Software Features

Advanced Firewall

Monitors programs for suspicious behavior spotting and stopping new attacks that bypass traditional anti-virus protection.

Two-way Firewall

Makes your PC invisible to hackers and stops spyware from sending your data out to the Internet.

Private Browsing

Erases your tracks – allowing you to surf the Web in complete privacy.

Identity Protection

Helps to prevent identity theft by guarding your personal data.

Online Backup

Backs up files and restores your data in the event of hardware malfunction.

Do Not Track

Stops data collecting companies from tracking you online.

Facebook Privacy Scan

Scans your recent Facebook activity and alerts you to privacy concerns. Control what others can see.

Privacy & Security Toolbar

Provides Site Check, Do Not Track, Facebook Privacy Scan, private browsing and more.