Re: 4 NICs, 3 nets one and confused bunny in over his head

From: Andrew Schulman (andrex_at_deadspam.com)
Date: 03/10/05 

Date: Thu, 10 Mar 2005 04:01:11 GMT

> -------
> | LAN |
> -------
> |
> |
> ------- ----------------
> | HUB |---| MDK Box Eth3 |
> ------- -------------------------
> Just routed on the box ==> | MDK Box Eth2 |
> ----------------
> |
> |
> ------- ----------------
> | ATA |---| MDK Box Eth1 |
> ------- ------------------- ---------
> Again routed on the box ==> | MDK Box Eth0 |---| I-Net |
> ---------------- ---------
>
> The problem is that cannot put the ATA between Eth0 and the net as my
> ISP provides IPs dynamically and only provides one IP pr. account so for
> this to work it is more or less essential that all traffic between the
> LAN and the net goes via the network cables to the ATA and back...

I don't understand this, but I don't know anything about VoIP, so I'll take
your word for it.

> So here's the question: What do you reckon, could this actually be done?
> Clumpsy and odd as it might look?

Sure; it just requires the right routing rules. But it looks to me as
though the reason for your complexity here is that there's some requirement
that all of your LAN traffic pass through the ATA. Why, for example,
couldn't you just hang the ATA separately as a terminal node off of the
hub, or off of one of those four NICs on the Mandrake box? Is there
something about the VoIP or QOS (neither of which I know anything about)
that requires you to pass all of your traffic through the ATA? 

-- 
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