Local Area Network
Network Address Translation: Typically an internet router multiplexes all the traffic through a public IP to several private IPs. Usually, the machines under the router network cannot be accessed from the outside unless a Port is forwarded in the router configuration, or if such host has previously started a TCP communication with the message source.
Transmission Control Protocol
Traversal Using Relays around NAT A TURN server is a network element that supports a common point of redirection of messages. It redirect messages between N nodes connected to it. This is a very common technique in order to traverse a NAT or an unreachable network.
User Datagram Protocol
Wide Area Network