I all ^_^

I have stumbled on to a not to bad snag...

i have added pptpd support to my router, it works fine except that i have to add many lines to allow access to the new PPP connection in iptables.

I want to allow access to any PPP connection (PPP+) that is not PPP0 (since its my external inteface), PPP+ wont work since it will include PPP0 :S....

I know i can order the rules in such a way that it will check bail if the interface is PPP0 and then i may add the accept PPP+ rule... (confused yet??)

So my question here today is: Is there a away to make a simple IPTABLES rule that can accept all PPP connection except PPP0... something like

IPTABLES -A INPUT -I PPP+ ! PPP0 -J ACCEPT

is there such a syntax available to IPTABLES?

I cant seem to find something to suite my needs...

Cheers mates ^_^