I know it is poor form to ask a question after just joining a mailing list,
but I searched around for an archive and couldn't find out. I pray you'll
forgive my brashness.
What I am trying to do is have 2 internet interfaces properly routing on
the same box using the 2.4 kernel. I have a cable modem and a DSL modem
(eth2) running into a single server which provides a few services to the
outside world, including HTTP. This server also is forwarding the cable
modem NIC (eth1) to the internal LAN (eth0) using SNAT. If I switch the
default route and enable iptables to forward the DSL modem to LAN, then
that works fine as well. So all 3 interfaces are effectively working, but
only 2 of the Internet interfaces at a time. I've tried making both Net
interfaces the default route, but it only routes the interface that was
last made default.
I want to make it so that someone can access the machine from either
Internet IP (both static) so I can use the DSL interface (eth2) as a server
or route certain ports coming in on eth2 it specifically to another server
behind the routing machine. I would like this without interrupting the
current cable modem SNAT connection.
I have discussed this notion with a lot of people, and it seems that no one
really knows how to do this. It seems like it really shouldn't be that
hard to put services out over specific interfaces. So I ask here. If
anyone can give me any sort of guidance, direction, even a smile, I would
be IMMENSELY grateful.
Thank you,
Joel Kleppinger
