I currently have an Ubuntu machine, which I'd like to use as a access point/proxy server.
Now, due to the requirements I have, it's going to be a fairly complex (for a beginner...) setup.
The machine is connected to the internet, and it has a wireless card.
The end result is that should act as router (access point) for two separate wireless networks. One network would connect directly to internet, the other instead should connect to a VPN.
I don't know if this is typical or not, but essentially I want all the trusted users to be able to connect to a wireless which goes directly to the internet, while the untrusted ones connect to the internet through a VPN, behind the scenes.
Can anybody give me an overview of the concepts involved, and where can I start studying for setting it up? The VPN setup should be an OpenVPN one.