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program to configure the Linux IP packet filtering rules

iptables is the userspace command line program used to configure the Linux 2.4.x and later IPv4 packet filtering ruleset (firewall). It is targeted at system administrators. Since Network Address Translation is also configured from the packet filter ruleset, iptables is used for this, too. The iptables package also includes ip6tables. ip6tables is used for configuring the IPv6 packet filter.

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 http://www.iptables.org/documentation/index.html#documentation-faq; User tutorials available from http://www.iptables.org/documentation/index.html#documentation-howto; User HOWTOs available from http://www.iptables.org/documentation/index.html#documentation-howto;

Related Projects


LicenseVerified byVerified onNotes
GPLv2Janet Casey1 September 2004

Leaders and contributors

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

Resources and communication

AudienceResource typeURI
Bug TrackingBug Trackinghttp://bugzilla.netfilter.org/
DeveloperVCS Repository Webviewhttp://git.netfilter.org/iptables/

Software prerequisites

Required to useLinux kernel 2.4.4 or later (author recommends 2.4.18 or later)

This entry (in part or in whole) was last reviewed on 15 February 2017.


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