# man > iptables-apply(8)

[_IPTABLES-APPLY_(8)](https://www.chedong.com/phpMan.php/man/IPTABLES-APPLY/8/markdown)                          iptables 1.8.10                         [_IPTABLES-APPLY_(8)](https://www.chedong.com/phpMan.php/man/IPTABLES-APPLY/8/markdown)

## NAME
       iptables-apply - a safer way to update iptables remotely

## SYNOPSIS
       **iptables-apply **[-**hV**] [**-t _**timeout_] [**-w _**savefile_] {[_rulesfile]|-c_ _[runcmd]}_

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

### -w _ --write _
              Specify  the  savefile where successfully applied rules will be written to (default if
              empty string is given: /etc/network/iptables.up.rules).

### -c _ --command _
              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.

## SEE ALSO
       [**iptables-restore**(8)](https://www.chedong.com/phpMan.php/man/iptables-restore/8/markdown), [**iptables-save**(8)](https://www.chedong.com/phpMan.php/man/iptables-save/8/markdown), [**iptables**(8)](https://www.chedong.com/phpMan.php/man/iptables/8/markdown).

## LEGALESE
       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.

iptables 1.8.10                                                                    [_IPTABLES-APPLY_(8)](https://www.chedong.com/phpMan.php/man/IPTABLES-APPLY/8/markdown)