A device or program that limits access to a computer network.

The Essential Law Dictionary. — Sphinx Publishing, An imprint of Sourcebooks, Inc. . 2008.

software which prevents unauthorised access to intranets and extranets by guarding the gateway between a company's private network and the public internet. A firewall scrutinises each network packet to determine whether it should be forwarded to the private network or denied access.
Related links

Practical Law Dictionary. Glossary of UK, US and international legal terms. . 2010.

Look at other dictionaries:

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  • firewall — ► NOUN 1) a wall or partition designed to stop the spread of fire. 2) Computing a part of a computer system or network which is designed to block unauthorized access while permitting outward communication …   English terms dictionary

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