Network Address Translation - Raspberry Pi

[dmroeder]

Here's what I have: Raspberry Pi B+, USB-Ethernet adapter

What I want to do: Setup NAT between eth0 and eth1

..at least that's what I think.

Let's say I have a network that's 10.10.10.x. And I have another network that's 192.168.1.x. These networks are all in the same building. One might be a business network, the other might be a industrial control network. What I'd like to be able to do is plug eth0 into 10.10.10.x network and eth1 into 192.168.1.x network. Then map an IP address on 10.10.10.x to an address on 192.168.1.x through the Pi. The device that's on the 192.168.1 network would show up on the 10.10.10 network as if it were actually on the 10.10.10 network. If I'm not mistaken, this sort of thing is called Network Address Translation.

What I'm wondering is: is this possible using the Pi?

 

[COLGeek]

The Pi can certainly act as a router (and support NAT):

https://www.google.com/search?q=raspberry+pi+as+router&ie=utf-8&oe=utf-8

 

[dmroeder]

Thanks. I've googled around for a bit, I kept seeing routing articles, but not many of them specifically mentioned NAT so I was just checking.

 

[COLGeek]

NAT is a function of nearly all routers, so you should have plenty of options from where to start. What you are describing is performed by every off-the-shelf router than folks use to access the 'Net, globally.

 

[skittle]

Yes you can do this (NAT) via Linux IPtables. Debian/Archwiki is a good place to start poking around at.

 

[dmroeder]

Thanks for the tip skittle. I've been tinkering around with iptables this afternoon. I see I have a little learning to do with this one!

 

[skittle]

Can also give nftables a try. It is a replacement for iptables. Easier to configure. .

https://wiki.debian.org/nftables