Firewall - Meaning, Definition & English Examples
A firewall is a security system that monitors and controls incoming and outgoing network traffic. It acts as a barrier to protect a computer or network from unauthorized access or cyber threats.
Definition:
A security system controlling network traffic to block unauthorized access while allowing approved communication.
Synonyms:
barrier, shield, safeguard, filter
Part of Speech:
noun
Antonyms:
vulnerability, openness
Common Collocations:
configure a firewall, bypass the firewall, firewall protection, firewall software
Derivatives:
firewalled, firewalling
Usage Tips:
Use "firewall" to refer to digital or metaphorical barriers preventing unwanted access or threats.
Common Phrases:
behind the firewall, firewall rules, hit a firewall
Etymology:
Originated in the 1980s from "fire" (destructive force) + "wall" (barrier), describing network security systems.
Examples:
- 1. The company installed a strong firewall to protect its data.
- 2. Her computer crashed because the firewall blocked a critical update.
- 3. You should never disable your firewall while browsing the internet.
- 4. The IT team updated the firewall rules yesterday.