Tinc is a VPN daemon which tunnels IP packets and Ethernet frames over UDP. More on Tinc can be found on: http://tinc-vpn.org Here I will show a tinc setup with an alpha (as a listening peer) and a beta (a peer connecting to alpha). After setting up the VPN, alpha will be the gateway for beta. All traffic from beta will be routed through alpha and back. I will basically retell the man page documentation: https://tinc-vpn.org/documentation-1.1/tinc.conf.5 but in a more tutorial kind of way.