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> > My problem is simple. (Hopefully the solution is, too!) Packets from
> > the 192.168.10.0 network have a source address of 10.100.1.4 after
> > masquerading. This makes it impossible for any packets to be returned.
> >
> > How can I set the source address to be 203.23.128.254?
>
> You really can't. The ISP has assigned you an address from a private
> network. They are probably NAT-ing it somewhere upstream of you.
>
> Why did they assign you a 10-net address? Is the router a DSL modem?
> If so, you might want to see if you can convince them to switch it to
> bridging mode (vs. routing mode) so that you get a registered IP
> address directly on your gateway.
We have a microwave dish on top of the building. I'm not exactly sure
what the 10.100.1.1 box is (all I know is that it's some kind of
proprietry interface to the microwave dish) and I imagine there's an
identical box at the other end with a 10.100.1.x address.
We do have a registered IP address on the gateway, (we have the whole
203.23.128.0 class C) and any packets that come from this network
obviously keep a 203.23.128.x source address and replies get routed back
to us no problem. However, most of the machines on our network don't need
real IPs, so I'd like to switch them over to a private network to conserve
IP space.
Are you sure there is no way to chage the source address? After reading a
more up-to-date HOWTO I investigated the iproute2 tool which seems to be
able to do what I want. The problem is, the documentation is somewhat
lacking so I still don't have any idea how to do this, (if it is
possible).
Thanks for your help,
Adam.
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