TCP hole punching is a commonly used NAT traversal technique, for sending 2-way messages between nodes in an Internet computer network. The term "NAT traversal" is a general term for techniques that establish and maintain TCP/IP network and/or TCP connections traversing network-address-translation (NAT) gateways.
NAT traversal techniques are typically required for client-to-client networking applications, especially peer-to-peer and Voice-over-IP (VoIP) deployments.
Read more about TCP Hole Punching: Description, Network Drawing, Types of NAT, OS Support, See Also
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