firewall

Also known as packet filter

network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules

AI overview

A firewall is a security system that watches over network traffic coming in and out of your computer or network, allowing or blocking data based on preset safety rules. It matters because it helps protect your devices and information from unauthorized access and malicious threats by acting as a barrier between your network and potential dangers on the internet.

AI-generated from the Wikipedia summary — may contain errors.

Wikidata facts

Image: Firewall Symbol.svg

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Stack Exchange tag: stackoverflow.com/tags/firewall
Commons category: Firewall

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Article

In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on configurable security rules. A firewall typically establishes a barrier between a trusted network and an untrusted network, such as the Internet or between several VLANs. Firewalls can be categorized as network-based or host-based.

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