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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | LEGALESE | COLOPHON |
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IPTABLES-APPLY(8) iptables 1.8.11 IPTABLES-APPLY(8)
iptables-apply — a safer way to update iptables remotely
iptables-apply [-hV] [-t timeout] [-w savefile] {[rulesfile]|-c
[runcmd]}
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'.
-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:
/etc/network/iptables.up.rules).
-c runcmd, --command runcmd
Run command runcmd to configure iptables instead of
applying a rulesfile (default:
/etc/network/iptables.up.run).
-h, --help
Display usage information.
-V, --version
Display version information.
iptables-restore(8), iptables-save(8), iptables(8).
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
http://gw.tnode.com/>.
Permission is granted to copy, distribute and/or modify this
document under the terms of the Artistic License 2.0.
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 2025-08-11. (At that time,
the date of the most recent commit that was found in the
repository was 2025-07-22.) 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
man-pages@man7.org
iptables 1.8.11 IPTABLES-APPLY(8)
Pages that refer to this page: iptables(8), iptables-restore(8), iptables-save(8)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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