From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Friesen Subject: question about bridging/tunneling Date: Wed, 22 Jan 2003 17:12:06 -0500 Sender: netdev-bounce@oss.sgi.com Message-ID: <3E2F1736.500@nortelnetworks.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: To: netdev@oss.sgi.com Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org I would like to take two physically separated networks and bridge them with some kind of tunnel over a third network. What I suspect will be the tricky bit is that the two networks are both on the same subnet. The topology will be something like this: tunnel box 1 192.168.1.0/24 --- 47.129.x.x (part of it) | | (network) | | 192.168.1.0/24 --- 47.129.x.y (rest of it) tunnel box 2 How would I go about doing this with a linux box at each end? Security isn't really a concern now, quick and dirty is fine. I was hoping for some way to make the two tunnel boxes and the tunnel itself act like an invisible bridge, without needing any 192 addresses. The key thing here is that I can't change the routing on the other machines, so the tunnel boxes are going to have to proxy arp for the machines on the other end of the tunnel. Any pointers on how to do this or where to look for docs? Thanks, Chris -- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com