Re: [gentoo-user] modifying iptables: how can I prevent locking me out?

[Mark Knecht <markknecht@gmail.com>]

On Mon, Jan 24, 2011 at 10:47 AM, Jarry <mr.jarry@gmail.com> wrote:
> Hi,
>
> I have to change rather complex iptables rules on server
> and I do not want to lock me out as this server is about
> 50 miles away. So how should I do it?
>
> I can back up the old rules by running:
> /etc/init.d/iptables save
> and it will be saved to /var/lib/iptables/rules-save
> (some strange format starting with number like [536:119208])
>
> I prepared a script with new (modified) iptables-rules,
> which I will run in bash. But in case I screw something,
> how could I force netfilter to load old saved rules,
> if I for whatever reason do not connect to server (ssh)?
>
> Or can I load new iptables-rules for certain time, and
> then force netfilter to load back the old rules again?
>
> Jarry
>

Maybe a cron job that no matter what reloads the old rules 1 hour later?

- Mark