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'iptables' is built on top of netfilter: the new packet alteration framework for v2.4 of the Linux kernel. It is an enhancement on ipchains, and is used to control packet filtering, Network Address Translation (masquerading, portforwarding, transparent proxying), and special effects.


User and developer FAQs available in various languages from; User tutorials available from; User HOWTOs available from;


Download version 1.6.0 (stable)
released on 18 December 2015

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Related Projects


LicenseVerified byVerified onNotes
GPLv2Janet Casey1 September 2004

Leaders and contributors

James Morris Contributor
Mark Boucher Contributor
Rusty Russell Contributor
Harald Welte Maintainer

Resources and communication

Audience Resource type URI
Developer E-mail
Support E-mail
Bug Tracking Bug Tracking
Developer VCS Repository Webview
Help E-mail

Software prerequisites

Kind Description
Required to use Linux kernel 2.4.4 or later (author recommends 2.4.18 or later)

This entry (in part or in whole) was last reviewed on 20 December 2015.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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