Subject: Re: Router/Server????
To: Armen Babikyan <armenb@moof.ai.mit.edu>
From: Nathan Raymond <nate@staff.feldberg.brandeis.edu>
List: port-mac68k
Date: 06/18/1998 12:07:16
On Thu, 18 Jun 1998, Armen Babikyan wrote:

> At 12:01 AM -0500 6/18/98, Michael G. Schabert wrote:
> >>> I might plan to upgrade to a cable modem, so is it possible to have 2
> >>> ethernet cards in a computer and route an ethernet connection to ethernet?
> >>
> >>It is possible to have 2 Ethernet cards in the same computer, but I'm not
> >>sure exactly what you mean by "route an ethernet connection to ethernet".
> >>On my home system, I have a Q700 with an Ethernet card and a modem.  The
> >>Ethernet card is connected to a small hub which connects the other
> >>machines on my tiny LAN together.  The Q700 runs PPP over the dialup
> >>connection and uses IPNAT to route stuff from the other machines through
> >>the dialup line.  It works pretty well :-)  I presume this is more or less
> >>what you're looking for?
> >
> >No, he means that he wants to use the NetBSD box to route between one
> >Ethernet device and another, while using IPNAT for this. Cable modems use
> >Ethernet interfaces, so won't be using a typical serial modem. While it
> >should no problem to do, the biggest question would be getting the cable
> >modem's Ethernet card to be supported. I don't know what kind of cards they
> >use for Macs (I use ISDN personally), but I know that most have no trouble
> >working with Linux on the PCs.
> >
> 
> as far as i know, they give you external boxes to which a 10bt cable plugs
> out of and into your computer which has an ethernet interface already. 

That's right - and they'll sell you an off-the-shelf ethernet card if you
need it, nothing special.

> they
> actually manufacture internal cards, where you attack a coax cable
> connection to your computer?

No, and that's not possible - there is a coax high-band filter after the
cable split so that the cable mdoem doesn't have to deal with the TV
signals.  Cable modems are in no way designed to handle both signals.

> heh i suppose they do...maybe to watch TV and
> surf the net at the same time :-)

I do that, but with a cable-ready TV card in another Mac. :)

> I don't know of any internal cards for mac...or haven't heard of
> any...please let me know.

There are none other than the standard ethernet.

--
Nathan Rayond