Re: How should I configure my two lancards on my Debian system?

[Andrei Popescu <andreimp@rdslink.ro>]

On Mon, 23 Jan 2006 18:13:43 +0100
Sonixxfx <sonixxfx@gmail.com> wrote:

> Thanks Andrei, but I prefer to to try it first with the two lan cards I
> have. If it can't work this way, I am going to buy a router later.
> 
> Any other suggestions?
> 
> Thanks,
> 
> Ben
> 
> p.s. sorry for mailing directly to you
> 
> 2006/1/23, Sonixxfx <sonixxfx@gmail.com>:
> >
> > Thanks Andrei, but I prefer to to try it first with the two lan cards I
> > have. If it can't work this way, I am going to buy a router later.
> >
> > Any other suggestions?
> >
> > Thanks,
> >
> > Ben
> >
> > 2006/1/23, Andrei Popescu <andreimp@rdslink.ro>:
> > >
> > > On Sun, 22 Jan 2006 19:22:15 +0100
> > > Sonixxfx <sonixxfx@gmail.com> wrote:
> > >
> > > > Hi,
> > > >
> > > > I have a linux box connected directly to the internet that has two lan
> > > cards
> > > > installed on it. I would like to connect two other computers to those
> > > cards
> > > > so that they can make use of the internet connection. Can someone tell
> > > me
> > > > how I should configure those cards to achive this?
> > > > I actually already have a setup that makes it possible for one pc to
> > > connect
> > > > to the internet using one of those cards, but I do not no how to
> > > configure
> > > > the other. I have been thinking about a different subnet and bridging
> > > but I
> > > > didn't really came further than that.
> > > >
> > > > Thanks for your help,
> > > >
> > > > Ben
> > >
> > > Cleanest way would be to buy a switch. You connect that to the second
> > > card of the gateway (the computer with the internet connection) and then
> > > connect the two other computers to the switch. If you buy one with "auto
> > > mdix" (some-times called auto cross-over) you don't even need to worry about
> > > the types of cables you use (straight/patch or cross-over). If you do it
> > > like this, the set-up for the second client computer is almost identical
> > > (identical if you use DHCP). One other advantage with this setup is that the
> > > third computer does not depend on the second in any way (if I understood
> > > correctly what you were proposing).
> > >
> > > Andrei
> > > --
> > > If you can't explain it simply, you don't understand it well enough.
> > > (Albert Einstein)
> > >
> > >
> > > --
> > > To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
> > > with a subject of "unsubscribe". Trouble? Contact
> > > listmaster@lists.debian.org
> > >
> > >
> >

Maybe I didn't understand correctly. Are the 2 lancards in the gateway free? How is the gateway connected to the internet? If one of the cards is used for the internet, the only other way I can think of would be to put a third card in the gateway. If you have two *free* lan cards in the gateway (one for each client), I think it can be done. I would try shorewall as a configurator for the firewall/masquerading.

Andrei

P.S. A switch is not a router. For your setup a router (which is also more expensive and possibly not enough) would not be necessary. Linux can do all that you need.
-- 
If you can't explain it simply, you don't understand it well enough. (Albert Einstein)