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Firewalls are widely considered a vital part of network security.Ĭompanies that produce firewalls typically release updates and upgrades to keep up with the latest threats and new OS releases. Many devices come with a firewall already built-in and are available for popular operating systems such as macOS, Windows, and Linux. So you can see why IT adopted the term for cybersecurity purposes! Many organizations and private consumers employ firewalls. These walls are typically composed of fire-resistant materials. The term "firewall" was first used to describe a wall in a building that prevents fires from spreading. Imagine firewall software as a barrier or obstacle that closes off your IT assets from the outside world. A firewall is defined as a network security system comprised of either software or firmware that inspects inbound and outbound on your system based on established parameters and rules to prevent unauthorized access to your network.
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