Compassh
the OpenSSH VPN, without the VPN
Compassh is an helper for the popular OpenSSH remote connection software, focused on providing near-VPN service without the complexity and the setup required by a real VPN. Using a VPN software may require an ad-hoc firewall setup, the generation of a key (pair) and the installation of the VPN software on a host that is not under your control. Compassh try to solve as much of this problems with a smart use of OpenSSH.