Nothing coming back on ppp0 ?

[Brad Chapman]

Mr. Corbiere,

   What does your ruleset look like? And your routing table?
And what do you mean by pinging the "interface"? If you can't
reach your ISP gateway you either have a PPP problem or a routing
problem. Send us your ruleset, your routing table, and the output
of `tcpdump -i ppp0' when you attempt to ping your ISP's gateway.

Brad

Adrien Corbiere wrote:

> Hello,
> 
> I'm trying to configure iptables to build a firewall for a small
> network.
> My problem is that masquerading seems to work correctly for paquets
> going out, but nothing comes back on ppp0. I didn't find the problem.
> 
> >From the internal network, i can ping ppp0 interface of the firewall,
> but
> not the gateway of my ISP. It's exactly the same behaviour from the
> firewall itself.
> 
> Could you help me ?
> 
> --
> Adrien Corbiere (and his pseudo-english)
> 
> 
> 
>