Re: [Hampshire] ADSL bridge

On Thu, Jan 18, 2007 at 01:22:59PM +0000, Tom Sykes wrote:
[snip]
> The set-up we have at the moment consists of a bit of kit that connects
> to the ADSL/phone line (I'm assuming it's an ADSL bridge, but I'm not
> sure as Newnet supplied it) and several NAT routers. There are several
> companies in a shared set of offices, and each of us connects via a NAT
> router which is configured to use one of the external IPs.
>

How many is several companies?

>     [phone socket]
>           |
>       [ADSL box]
>           |
>          /|\
>         / | \
>        N  N  N

>
> Each 'N' represents a NAT router. The LAN segment of each NAT router is
> connected to physically separate networks.
>

I assume that each NAT router has a public IP address on the external
interface and a private IP address on the internal interface?

If that's the case the "ADSL box" must have an external IP address on
the interface connected to the NAT routers so they're on the same network
segment?

> Does anyone know of another product that will allow us to do what we want?
>

A Linksys AG241-UK can have both of its interfaces on the same network
segment. i.e. NewNet have given you 213.131.190.193 as your router's
address. This gets assigned to your ADSL box automatically. You can give
the same IP address and subnet mask to the internal interface of the
Linksys. You can turn NAT off on the Linksys so it acts just as a router
(otherwise you'll double NAT).

This should do what you want, unless I haven't fully understood your
requirements or setup.

Regards,
David.
-- 
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