When using commands like `scp` or `rsync` with the public IP address of your server, you will automatically transfer the files over the (public) internet. If you have have two instances with private networking enabled you can also transfer these files over the private network and prevent extra charges for the used bandwidth. * Two instances (we'll call them `server_a` and `server_b`) with private networking enabled * Both instances should have private IP addresses configured in the same subnet (......