One IP two boxes?

Cocobo-1 · Apprentice Joined: 18 Dec 2003 Posts: 166 Location: Sweden

I got 2 boxes with one NIC each. They had separate ip addresses and where connected to the Internet throu a switch. Yesterday my isp changed and will only supply one public ip address for a while. This means that one of the boxes have no connection. Is there some easy way to fix this. I don't have time to play around and I'll get an additionall ip in a couple of weeks. The box without a connection don't need Internet. It just needs to access the other box.
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nahpets · Posted: Fri Apr 15, 2005 8:55 am Post subject:

1. Use a router instead of a switch.

2. Get a third ethernet card, put it in the box which has the public IP. Set up eth1 on the box to have IP 192.168.1.1 or something similar. Set up box 2 to have 192.168.1.2. You can set up the first box to route traffic to the second box using shorewall.

zieloo · Veteran Joined: 28 Mar 2004 Posts: 1337

Add second NIC and masquarade the line?

Cocobo-1 · Apprentice Joined: 18 Dec 2003 Posts: 166 Location: Sweden

That's not what I would call an easy fix. I will not buy stuff to make it work. I hear there is a way to create 2 devices from one NIC. Could I use this to make one device my public ip and set the other to 192.168.0.1 and my other box to 192.168.0.2 so they could talk to eachother?
_________________
Professor: "Good news, everyone. Several years ago I tried to log onto AOL, and
it just went through. Whee! We're online."

Shopro · Posted: Fri Apr 15, 2005 11:02 am Post subject:

You might want to have a look at this, maybe it is what your looking for.

https://forums.gentoo.org/viewtopic-t-269710.html
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fvant · Posted: Fri Apr 15, 2005 11:24 am Post subject:

so you have 2 boxes A and B.

A has a public IP and internet access.
B only needs to talk to A
you have a hub or switch.

On A, create an alias for eth0, so it has 2 IP adresses, one public (eth0) and one local (eth0:0) (e.g. in the range 192.168.10.x)