: Security management software for Cisco network hardware, focusing on threat defense and intrusion prevention.
Many iterations of PC SECURITY 6.4 included a built-in personal firewall. This was a critical necessity as high-speed broadband became standard in homes. The firewall managed inbound and outbound traffic, creating a "stealth" mode for the PC to hide it from port scanners. The 6.4 version usually refined the "learning mode," reducing the number of annoying pop-up alerts asking users to allow or deny connections, a common complaint in earlier versions. PC SECURITY 6.4