[plug] Configuring IP Aliaes

[Mark A. Sasse]

Hi Chris,

The internal LAN subnet is 10.0.0.0/255.255.255.0.  I want internal 
clients to be able to see the machine via 10.0.0.154.  With the alias 
IP, 203.47.28.148, I want external clients on the internet to see the 
machine.  

Once I've configured the virtual address using eth0:1, what route do I 
need to add to allow packets destined for the internet to be routed 
through our router which is 203.47.28.150.  I've been adding the 
default gateway using the command below.

route add default gw 203.47.28.150

However, due to my lack of experience in this, I think the internal 
packets are also trying to be routed via the router.  I would assume 
one gateway should be defined for the alias (eth0:1) and not one for 
the internal IP (eth0) so that packets destined for the internet go 
through the gateway and all packets for the 10.0.0.0/255.255.255.0 are 
left alone.

Mark

----- Original Message -----
From: Chris <deicidal at iinet.net.au>
Date: Tuesday, April 9, 2002 12:35 pm
Subject: Re: [plug] Configuring IP Aliaes

> At 12:26 PM 9/04/2002 +0800, you wrote:
> >Hi All,
> >
> >I have a situation where I want a machine to have a LAN Address 
> and an
> >Internet Address on the same ethernet card (eth0).  I've 
> configured an
> >alias called eth0:1 to have the internet address and eth0 to have the
> >internal address.
> >
> >E.G.
> >
> >Internal LAN IP: 10.0.0.254
> >External IP: 203.47.28.148
> 
> If you have an external IP arent you visible already?
> How are you connected to the net?
> 
> >I want this machine to be visible on the internet.
> >
> >How do I configure the routes to handle this case?  I do want to keep
> >the two subnets seperate.
> 
> Are you saying you want your LAN on the net?
> 
> 
> >Any help would be appreciated.
> >
> >Mark
> >
> 
> .Chris
> 
> 
> 
 
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