We’ll begin with a definition of what a firewall is and then move into some basic questions and answers. After that we’re going to provide information for those that might want to beef up their firewall protection.
The Firewall Basics
Effectively a firewall is a filter. It is designed to prevent dubious programs and Internet services from establishing a connection or gaining access to your computer.
Firewall Defined: A firewall is hardware or software technology designed to monitor and filter incoming and outgoing traffic to your PC. It is a network security function that effectively acts as a barrier. The data that passes through depends on the pre-determined set of rules which are configured in the firewall settings.