[vox-tech] bridging subnets

[Steven Peck]

I too confess confusion.  The reply question is, What are you trying to
accomplish with your setup?

Is there a specific reason that you need the 5 systems to have valid =
Internet
IP addresses?  Depending on the services you could move all the systems =
to an
internal network and port forward the specific network services you are =
using
to the internal 192.168.0.x network behind the Linux box.

To answer your specific question, all that 'needs' to be done is to add =
the
appropriate destination routes into your router table on the system =
doing the
NAT/routing.  However, that seems to be a bad idea.

I have one 'real' Internet IP address, but I port forward various =
services to
different systems as I need to in my own network.

-sp

> -----Original Message-----
> From: Ken Bloom [mailto:kabloom@ucdavis.edu]=20
>=20
> I'm inventing some random numbers (they're not even valid IP=20
> addresses) to explain the problem better
>=20
> The following computers are connected via hub to the DSL modem:
> 201.123.321.12
> 201.123.321.13
> 201.123.321.14
> 201.123.321.15
> 201.123.321.16 (eth0) / 192.168.0.1 (eth1)
> 192.168.0.2
> 192.168.0.3
>=20
> What can be done so that the 201.123.321.* computers can see the
> 192.168.0.* computers? Bear in mind that these computers are not=20
> necessarily all Linux computers, but that we know=20
> 201.123.321.16/192.168.0.1 is a Linux computer.
>=20
>=20
> > ---ORIGINAL MESSAGE---=20
> > From: Rod Roark <rod@sunsetsystems.com>
> > I'm surely being dense, but I don't understand what you
> > mean.  What are the subnets in question?
> >=20
> > Here's a thought that may or may not apply.  Perhaps you
> > can put all the machines on a single LAN behind the Linux
> > firewall.  Note that you can assign all 5 external IP's to
> > this Linux box and then port-forward (with iptables) to
> > other machines depending on the destination IP address
> > (and/or port number) of incoming packets.
> >=20