May 1, - ZoneAlarm Pro Firewall is the powerful first line of defense to block hackers and intruders from accessing your PC. Its award-winning firewall. May 1, - ZoneAlarm's advanced firewall monitors behaviors within your computer to spot and stop even the most sophisticated new attacks that bypass. ZoneAlarm Pro Antivirus + Firewall file size: KB. ZoneAlarm® Pro Antivirus + Firewall Scans, detects, and removes viruses, spyware, Trojan. ZoneAlarm Pro Antivirus + Firewall, free and safe download. ZoneAlarm Pro Antivirus + Softonic review. By Bartley Sharkey. Excellent. 9. Advertisement.