A comparative analysis of nat hole punching

A simple scenario is when only one % &% % A, having a global address and wishing to set up a connection to B, will contact the mediator M with its own address and port combination. M will forward this connection request message along its persistent control connection to B, who will then set up a direct connection to A. This process is known as . and is possi% & in setting up a connection from inside to A’s public address. This technique also works when B is behind multiple layers of