iptables-apply Man page



iptables-apply – a safer way to update iptables remotely


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


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

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:

-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
. Version 1.1 – Copyright 2010 GW

This manual page was written by Martin F. Krafft
and extended by GW .

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

iptables 1.6.0 IPTABLES-APPLY(8)