[Gllug] Firewall which works even when the machine is shut down

[Murray Peterson]

An interesting idea.  You would loose the ability to log once your
filesystems are unmounted, which may not be ideal - unless you can keep
syslog running and log messages to a remote machine.

> When you go to runlevel 0, the kernel is still left
> there in memory, and will respond to interrupts.
> So if you take out the script in which kills IPchains then
> the box will continue to filter packets, even though
> you can't log into it. Weird.
>
> The article is based on a RedHat system, running
> a 2.2 kernel.
> The recipe is to remove
> /etc/rc.d/rc0.d/S00killall
> /etc/rc.d/rc0.d/K90network
> /etc/rc.d/rc0.d/K92ipchains
>


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