[ILUG] Creating a multihomed host.

[Oisin Kim]

Hi all,

I was wondering if I could tap in to your experience with Linux networking!

The hardware I have is 4 PCs running red hat. Each PC has 2 network cards, on 
each machine each card is attached to two separate hubs. 

What I'd like to do is have one network card configured as a private network 
interface on each machine, so as all traffic for the 4 local machines would 
pass through this card and the "local" hub. For any other traffic the 
machines should consult the DNS server as normal and pass through the other 
network card and the "external" hub.

I was wondering if modifying the /etc/hosts file will be enough to enforce 
this or what esle must I do.

Thanks in advance,

Oisin