there are many options for creating vpn tunnels using ssh. remote port forwading, local port forwarding, and even creation of tun interfaces with the "-w" switch. During this hack we will try to craete an "appliance" vm that can be used as a sshvpn concentrator inside an openstack cloud. We then will measure the throughput of the different tunnels we create varying their encryption options to quantify the possible throughput of the sshvpnconcentrator