Private-to-private communications over the internet

The meet-in-the-middle network provides a simple way to restore end-to-end connectivity between distant hosts located behind network address translators, and does so without reconfiguring the NAT devices that lie on the path between the hosts. The article proposes an internetworking method as part of a broader research project involving remote access to various IP-ready sensors, computers, cameras, and microphones installed in the home environment to monitor the health and safety of bedridden quadriplegic patients. This system configures all its IP devices with private IP addresses.