Zone Firewall is the best firewall software of 2025 and has helped thousands of people keep their digital information safe ...

Personal firewalls are available from numerous security vendors, and Windows XP includes its own (see Windows Firewall). For home and small business networks, a router with a built-in firewall is ...

A firewall that is provided by software. It often refers to a personal firewall in a user's computer, but software firewalls may be installed in servers as well. Contrast with hardware firewall.