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ferm is a tool to maintain and setup complicated firewall rules. It helps reduce the tedious task of carefully inserting rules and chains, so the firewall administrator can spend more time on developing good rules, and less time on the implementation of those rules. The preferred kernel interface, such as ipchains and iptables, executes these rules in one pass. They can also be split into different files and loaded at will.


Man page included and available in HTML format from


Download version 1.1 (stable)
released on 23 September 2004


Related Projects


LicenseVerified byVerified onNotes
GPLv2Janet Casey2 May 2001

Leaders and contributors

Daniel R. Bidwell Contributor
John Auer Contributor
Klaus lichtenwalder Contributor
Yannick Le Briquer Contributor
Auke Kok Maintainer

Resources and communication

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

Software prerequisites

Kind Description
Required to use kernel firewall program (ipchains/iptables/ipfwadm)
Required to use Perl 5

This entry (in part or in whole) was last reviewed on 20 May 2005.


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”.

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