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firewall
In computing, this term evokes the image of a digital perimeter or a filter that selectively permits or denies traffic. It carries a connotation of proactive defense and security, often used in professional IT contexts to describe the first line of defense against malicious actors.
In architecture and automotive engineering, the term refers to a physical barrier of non-combustible material. The primary goal here is containment, ensuring that a fire is trapped within a specific zone to protect occupants and critical machinery.
Meanings
A specialized system of hardware or software that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
The company installed a new firewall to protect its servers from cyber attacks.
Examples
This is a firewall.
The firewall blocked the connection.
Ancient city planning often included a structural firewall.
Phrasal Verbs
firewall off
to isolate a specific part of a network or physical area to prevent the spread of a threat or fire
The engineers decided to firewall off the legacy server to ensure that any potential breach would not compromise the rest of the system.