Creating a dummy network interface without any traffic routed to it

synthead · 2010-07-25 09:28:20

I am going to forward some ports from another machine to work on a server from home. I want this to be as seamless as possible, so I would like to create a dummy network device, set an IP for it, and forward some ports with SSH to it. I can create the device with openvpn --mktun --dev tap0 or even just modprobe dummy, but these commands seem to forward all my local traffic to it. This is what I'm trying to prevent. While this is happening, I can't forward port 22 to 10.0.0.1:22 since I'm serving ssh from 127.0.0.1 (as one example). I would like to learn the cleanest way possible to do this, hopefully by just throwing a flag somewhere.

fukawi2 · 2010-07-25 10:43:39

I don't quite understand what you're trying to do, can you give some more information? What is the *problem* you are trying to solve, rather than the solution you're trying to implement?

synthead · 2010-07-26 02:30:02

If I create any kind of fake interface, I seem to have all my local traffic forwarded to it. I am serving ssh on port 22 on my local machine, so when I forward port 22 from the other machine, it fails. I don't want to change ports or stop ssh on my machine. I want to create an interface that has no traffic forwarded to it from the beginning.

fukawi2 · 2010-07-26 04:14:56

How are you determining that "all your local traffic" is being forwarded to it? What is your definition of "local traffic" and "forwarded"?

synthead · 2010-07-26 04:18:54

If I assign 10.0.0.1 to the interface and ssh into 10.0.0.1, I get a login for my own box.

Arch Linux

#1 2010-07-25 09:28:20

Creating a dummy network interface without any traffic routed to it

#2 2010-07-25 10:43:39

Re: Creating a dummy network interface without any traffic routed to it

#3 2010-07-26 02:30:02

Re: Creating a dummy network interface without any traffic routed to it

#4 2010-07-26 04:14:56

Re: Creating a dummy network interface without any traffic routed to it

#5 2010-07-26 04:18:54

Re: Creating a dummy network interface without any traffic routed to it

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