firewall: meaning, definition, pronunciation and examples

No. A firewall is primarily a network traffic filter, controlling what data can enter or leave a network. An antivirus is software that scans, detects, and removes malicious software (malware) from files on a computer. They are complementary security layers.

Yes, especially in IT and business jargon. It means to protect or isolate with, or as if with, a firewall (e.g., 'We need to firewall the development network').

It is a metaphorical extension from physical firefighting. In buildings, a firewall is a fire-resistant wall that prevents flames from spreading. In computing, it's a security 'wall' that prevents digital threats (the 'fire') from spreading through a network.

Yes. Most modern operating systems have a built-in software firewall. It's a fundamental security measure that helps block unwanted incoming connections from the internet, adding a crucial layer of protection alongside antivirus software.

Originally: a physical wall designed to prevent the spread of fire. Modern primary meaning: a network security system (hardware or software) that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

Firewall is usually predominantly technical (it, business), but widely understood in general contexts due to digital ubiquity. in register.

Firewall: in British English it is pronounced /ˈfaɪə.wɔːl/, and in American English it is pronounced /ˈfaɪr.wɑːl/. Tap the audio buttons above to hear it.