> Hi, Gidday > > I'm looking at building a box like this and I'm wondering if it's doable. [...] > > Secondly can I bridge a tun device with a physical device, say tun0 and eth0 > bridged to form br0. > I think this is pretty much standard practice when using openvpn. http://openvpn.net/bridge.html However, I think you might want to use a tap device as tun is IP level, according to this doc: http://www.linux-m32r.org/lxr/http/source/Documentation/networking/tuntap.txt Chris