Re: iptables

[Erich Schubert <erich.schubert@mucl.de>]

> On my computer, I have iptables configured in /etc/network/interfaces
> using the "up" and "down" scripts.

Custom scripts?
Probably check them first by running them manually, then check if they
are actually run by ipup

> I also do similar things for isdn (in /etc/isdn/device.ippp0) and PPP
> in (/etc/ppp/ip-*.d/firewall).

I strongly recommend using the "ipmasq" package, which works with
ipfwadm, ipchains + iptables and works really great here.
It can also easily be customized with a run-parts like system

Greetings,
Erich