Firewall
/fˈaɪrwɑl/
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Definition
(noun) A fireproof barrier used to prevent the spread of fire between or through buildings, structures, electrical substation transformers, or within an aircraft or vehicle.
Sentence Examples
A firewall will guarantee Internet security.
I need to configure this server with an appropriate firewall system.
CEFR Practice Quiz
You should install a strong ____ to protect your computer from unauthorized access and malicious software attacks.