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Firewall Meaning: Definition, Examples, and Translations

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firewall

[ˈfaɪərˌwɔːl ]

Definition

Context #1 | Noun

network security

A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between a trusted internal network and an untrusted external network, such as the internet.

Synonyms

firewall system, network filter, security barrier.

Which Synonym Should You Choose?

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Word Description / Examples
firewall

This term is often used in a more general or non-technical context to refer to any kind of barrier designed to prevent the spread of something unwanted.

  • The firewalls in the building prevented the fire from spreading.
  • The company implemented personal firewalls to protect sensitive information.
security barrier

This term is generally used to describe any kind of protective measure in the field of cybersecurity, physical security, or even metaphorically to describe obstacles or challenges to security.

  • Installing a security barrier is essential to prevent unauthorized access.
  • The security barrier ensured that no unauthorized personnel could enter the server room.
network filter

This term is used specifically in technical contexts, especially when discussing specific functions or rules applied to traffic within a network.

  • The administrator configured a network filter to block suspicious IP addresses.
  • Using a network filter can help improve the performance of your network.
firewall system

This term is typically used in technical discussions to emphasize a more complex or comprehensive security solution involving multiple layers or components.

  • Our IT department is setting up a new firewall system to enhance security.
  • A robust firewall system is critical for protecting corporate networks.

Examples of usage

  • Make sure the firewall is properly configured to protect our network from cyber attacks.
  • The firewall blocked the suspicious incoming traffic.

Translations

To see the translation, please select a language from the options available.

Interesting Facts

Technology

  • Firewalls can be hardware (physical devices) or software (programs on your computer).
  • They work by monitoring incoming and outgoing traffic and deciding whether to allow or block specific traffic based on security rules.

History

  • The concept of firewalls in computers emerged in the late 1980s as the Internet began expanding.
  • The first modern firewall was created to protect the ARPANET, the precursor to the Internet, from unauthorized access.

Cybersecurity

  • Firewalls are an essential part of cybersecurity strategies, used by businesses and individuals to protect sensitive information.
  • They can help prevent attacks like hacking, malware, and data breaches.

Pop Culture

  • Firewalls are frequently mentioned in movies and TV shows that focus on hacking and cybercrime, showcasing their importance in security.
  • In popular games involving strategy or defense, the concept of a 'firewall' often serves as a metaphor for protecting assets from threats.

Origin of 'firewall'

Main points about word origin

  • The term 'firewall' originally referred to a physical barrier designed to contain fires in buildings.
  • In computing, the word was adapted to describe a system that blocks unwanted access, similar to how walls keep out flames.

The term 'firewall' originated from the physical brick walls designed to prevent the spread of fire in buildings. In the context of computer networks, the term was first used in the 1980s to describe a security system that controls access between networks. The concept of firewalls has evolved over the years to become an essential component of network security.

See also: bonfire, fiery, fire, firearm, firearms, firebomb, firebox, firebrand, firebug, firecrackers, fired, firefighter, fireman, fireplace, firepower, firestorm, firewoman, firework, fireworks, firing, misfire.