Re: networking with an embedded computer (fwd)
From: Blane Bramble (blane_at_spamguard.lyzard.net)
Date: 09/27/03
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Date: Sat, 27 Sep 2003 10:32:44 +0100
"Dan Helmick" <dhelmick@andrew.cmu.edu> wrote in message
news:Pine.GSO.4.58-035.0309261315200.4161@unix1.andrew.cmu.edu...
>
>
> I have a control setup that someone else set up to run. I have Redhat on
> the host computer and Timesys on the embedded. The Timesys is using the
> Redhat for its hard drive. There is a serial and ethernet connection
> between the two, but I think that only the ethernet is used in the current
> set up. I need to transmit a large amount of data from the embedded on
> idle times so I need the ethernet connection. I need to get data from my
> host (Redhat) computer, but only have a floppy functional at this time.
>
> I searched on google and came up with useless links. (maybe because I
> don't know the lingo)
>
> I don't want my embedded computer to worry about other traffic or
> maintaining a firewall or interacting with the outside world other then
> the host. BUT I would like to set up my host to use the network. They
> currently communicate through a dedicated hub. Is there a recommended
> setup that I should use? Where might I find more info on this setup?
>
Your best bet if I understand the setup properly is to put another network
card into the Host PC - attach this to your live network. Setup the default
route to point to this network/the external router on it. Setup a static
route for the IP address/range for the embedded device on the original
network card. This way the Host can talk to the outside world and the
embedded system, but the embedded system can only talk to the Host, and the
outside world can't talk to the embedded system.
Blane.
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