sorry, not trying to spread false info.
where does the routing stop? I have a DSL modem. Does it stop at the
modem, or at my ISP's gateway? Mostly just curious, but I have the feeling
it's the gateway, in which case wouldn't other DSL users with non-routable
IPs be able to see my traffic? When I boot my laptop into windows, other
windows workgroups show up (from other DSL users I guess), but I'm not
sure if this is even related to the routing of IPs.
thanks
charles
On Tue, 23 Nov 1999, Gordon Messmer wrote:
> Charles Galpin wrote:
> > You have it half right. You *could* use one card and a hub, but that would
> > totally defeat a good portion of the usefulness of the linux box - being a
> > firewall.
> >
> > So you want 2 nics.
>
> Since everyone likes to point their fingers toward security, I'll say
> "nu-uh". If the other machines on the network don't have routable IP's,
> then machines outside of his local network still can't get to the
> machines inside his network, and the Linux box still gets to work as a
> firewall. This could be done by configuring the NIC with a real IP, and
> an IP alias that isn't routable. The only real down (that I can see) is
> that all the network traffic is broadcast on the network twice, which
> shouldn't be a problem if you're only using it for a cable modem.
>
> Two nic's is an ideal setup, but one nic with an alias is the cheaper
> version. Masquerading will work either way. Do whatever suits you.
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