I would like to know how I can set up a site-to-site VPN between the LanTurtle and an off-site VPS. My goal is to be able to scan the network the LanTurtle has access to with OpenVAS from an another client connected to the VPS. I currently have both the reverse tunnel from the LanTurtle to the VPS as well as OpenVPN able to connect to the VPN server on the VPS. The VPS runs Ubuntu 14.04. I have been searching around and I am not able to find the right information. So any help would be appreciated.