At the most basic level, a hardware firewall is a physical unit, while software firewalls operate from inside your computer via an application. They have the same general mission, but they go about it in slightly different ways, giving them their own set of...
Firewall
Web Design + Web Hosting + Networking
Firewall for the internet
A firewall is a network security solution that protects your network from unwanted traffic. Firewalls block incoming malware based on a set of pre-programmed rules. These rules can also prevent users within the network from accessing certain sites and programs.