Protocol and system for firewall and NAT traversal for TCP...

Details Protocol and system for firewall and NAT traversal for TCP... Protocol and system for firewall and NAT traversal for TCP...

2011-08-09

2011-08-09

Tran, Phuc (Department: 2471)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S352000, C370S395520

Reexamination Certificate

active

07995594

ABSTRACT:
Embodiments of this invention provides a system and a protocol to enable two transmission control protocol TCP peers that exist behind one or more firewalls and network address translators NATs to automatically setup a true peer-to-peer TCP connection and exchange data without making changes to the firewall or NAT devices or existing TCP-based applications. In embodiments of this invention, the synchronization between the blind TCP peers is achieved using a system that consists of a registration server, an agent application, and a virtual network interface that together relay and replicate the control signals between the two TCP peers. In addition, embodiments of this invention are also used to traverse the NAT and establish a bi-directional peer-to-peer TCP connection in the firewall.

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