VPN + Virtual NIC?

[ayu]

I am setting up a VPN on my server to protect some services from outside view. But I don't want to use the "real" network so to speak, so I want to create a new virtual NIC of some sort, like eth1 and then assign a new unique subnet to that one and have the VPN going on that one instead (Like hamachi).

Problem is that I don't know how to add a virtual NIC like this ^^

Anyone have a clue? =)

[bad_brain]

hm, the easiest way should be creating an interface (as usual), and then adjusting the route to the virtual iface:
http://linux.die.net/man/8/route

[ayu]

hmm, so how do I add a virtual interface then? ^^

[bad_brain]

same way as a regular one, via ifconfig (to make it permanent via /etc/network/interfaces), then you create a route which pipes the traffic through the real NIC to the virtual one...