ZoneAlarm is an easy-to-use firewall that blocks hackers and other unknown threats.
- Intrusion Blocking systematically identifies hackers and blocks access attempts.
- Stealth Mode automatically makes your computer invisible to anyone on the Internet.
- Automatic Program Configuration provides safety and simplicity by automatically configuring programs. Automatically decides whether to allow or deny Internet access to individual programs.
- Expert Controls give savvy users precise control over security settings.
This free version is for non-commercial use only.