NAT TRAVERSAL METHOD, COMPUTER-READABLE MEDIUM, AND SYSTEM FOR MEDIATING CONNECTION

摘要

Disclosed herein is a network address translation (NAT) traversal method. A node sends a first, second, and third detection message from a local port to a first, second, and third response server, respectively, in order to receive from the response servers a first, second, and third response message, which respectively include a first, second, and third proximal external port number (EPN). The node then deduces a rule for proximal EPNs based on the received ones. Also disclosed is a system for mediating connection. The system assists a first node on a network in NAT traversal and includes at least three response servers, which receive detection messages from the first node and send back response messages that include EPNs.

主权项

1. A network address translation (NAT) traversal method, comprising:
sending a first detection message to a first response server from a local port, and receiving a first response message from the first response server, and the first response message comprising a first proximal external port number (EPN); sending a second detection message to a second response server from the local port, and receiving a second response message from the second response server, and the second response message comprising a second proximal EPN; sending a third detection message to a third response server from the local port, and receiving a third response message from the third response server, and the third response message comprising a third proximal EPN; and deducing a rule for proximal EPNs based on the first proximal EPN, the second proximal EPN, and the third proximal EPN.