iptables-apply(8) — Linux manual page


IPTABLES-APPLY(8)            iptables 1.8.10           IPTABLES-APPLY(8)

NAME         top

       iptables-apply — a safer way to update iptables remotely

SYNOPSIS         top

       iptables-apply [-hV] [-t timeout] [-w savefile] {[rulesfile]|-c

DESCRIPTION         top

       iptables-apply will try to apply a new rulesfile (as output by
       iptables-save, read by iptables-restore) or run a command to
       configure iptables and then prompt the user whether the changes
       are okay. If the new iptables rules cut the existing connection,
       the user will not be able to answer affirmatively. In this case,
       the script rolls back to the previous working iptables rules
       after the timeout expires.

       Successfully applied rules can also be written to savefile and
       later used to roll back to this state. This can be used to
       implement a store last good configuration mechanism when
       experimenting with an iptables setup script: iptables-apply -w
       /etc/network/iptables.up.rules -c /etc/network/iptables.up.run

       When called as ip6tables-apply, the script will use
       ip6tables-save/-restore and IPv6 default values instead. Default
       value for rulesfile is '/etc/network/iptables.up.rules'.

OPTIONS         top

       -t seconds, --timeout seconds
              Sets the timeout in seconds after which the script will
              roll back to the previous ruleset (default: 10).

       -w savefile, --write savefile
              Specify the savefile where successfully applied rules will
              be written to (default if empty string is given:

       -c runcmd, --command runcmd
              Run command runcmd to configure iptables instead of
              applying a rulesfile (default:

       -h, --help
              Display usage information.

       -V, --version
              Display version information.

SEE ALSO         top

       iptables-restore(8), iptables-save(8), iptables(8).

LEGALESE         top

       Original iptables-apply - Copyright 2006 Martin F. Krafft
       <madduck@madduck.net>.  Version 1.1 - Copyright 2010 GW
       <gw.2010@tnode.com or http://gw.tnode.com/>.

       This manual page was written by Martin F. Krafft
       <madduck@madduck.net> and extended by GW <gw.2010@tnode.com or

       Permission is granted to copy, distribute and/or modify this
       document under the terms of the Artistic License 2.0.

COLOPHON         top

       This page is part of the iptables (administer and maintain packet
       filter rules) project.  Information about the project can be
       found at ⟨http://www.netfilter.org/⟩.  If you have a bug report
       for this manual page, see ⟨http://bugzilla.netfilter.org/⟩.  This
       page was obtained from the project's upstream Git repository
       ⟨git://git.netfilter.org/iptables⟩ on 2024-06-14.  (At that time,
       the date of the most recent commit that was found in the
       repository was 2024-06-12.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

iptables 1.8.10                                        IPTABLES-APPLY(8)

Pages that refer to this page: iptables(8)iptables-restore(8)iptables-save(8)