Configurationrequest for firewall with temporary ppp0-interface

[Jan Engelhardt]

> Hi,
>
> I've the problem that I need some rules for a temporary ppp0 interface.
> This interface is only active then the admin has made a dial-up on the server
> and has activated a ppp-daemon.

Maybe it's been said, or not:
You can have iptables rules for devices even if they do not exist or are 
turned off (`a la "ip link set down")


Jan Engelhardt
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