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Firewall

UK //ˈfaɪəwɔːl// US //ˈfaɪərwɔl// Pronunciation

Definition

A network security system that monitors and controls incoming and outgoing network traffic.

Listen to definition

In simple words: A system that protects a computer from unwanted access.

Examples

• The company installed a new firewall to protect its sensitive data.
• If you don't have a firewall, your computer might be vulnerable to attacks.
• They adjusted the firewall settings to allow certain applications to connect.
• A robust firewall acts as a barrier against unauthorized access.
• Without a firewall, the network is like an open door to hackers.

Usage notes

Use 'firewall' in tech contexts, especially when discussing network security. Avoid in casual conversation unless relevant.

Grammar pattern

firewall + object

Memory hint

Think of a wall of fire that keeps unwanted guests out of your network.

Collocations

• install a firewall
• configure a firewall
• firewall settings

Synonyms

• security barrier
• network protector
• data shield

Common mistakes

• Confused with 'fire wall' as a physical barrier.
• Using in contexts unrelated to technology.