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firewall

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

Entitytype of device computer science termQ80998

Also known as packet filter

Instance of: type of device
, computer science term
1
Sources
1.paloaltonetworks.com/cyberpedia/what-is-a-firewall
View statement on Wikidata ↗
Subclass of: protective device

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

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.

Overview

All data

41 statements · 17% with external sources · numbers in brackets are citations

Has use: network security
Uses: IP address
transport layer applies to part: stateful firewall
application layer applies to part: application firewall
Has list: comparison of firewalls
list of router and firewall distributions
Different from: firewall
firewall

On other databases

24 identifiers linking firewall across the web's reference databases

Data quality

statements

17%

externally sourced

Source last edited September 27, 2026. AIDB refreshes this page daily.

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AIDB. (2026). firewall (Q80998). Retrieved from https://aidb.si/e/firewall-Q80998