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Network communication system and network penetration method

A network communication and network device technology, applied in the penetration field of network address translators, can solve the problems of invisible Internet, unable to penetrate NAT point-to-point connection, etc., to achieve the effect of speeding up

Active Publication Date: 2021-01-15
THROUGHTEK TECH SHENZHEN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the two network devices are located in different local networks behind different NATs, since the nature of NAT is to shield the local network so that the network devices behind the NAT are invisible to the Internet, the two network devices Will not be able to penetrate NAT to establish a point-to-point connection

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  • Network communication system and network penetration method
  • Network communication system and network penetration method
  • Network communication system and network penetration method

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Embodiment Construction

[0060]figure 1 It is a schematic diagram of the first operating state of the network communication system according to an embodiment of the present invention. Referencefigure 1 , The network communication system includes two network devices (hereinafter referred to as the first network device 110 and the second network device 120), and two address converters (hereinafter referred to as the first address converter 130 and the second address converter 140, respectively) ) And the online server 150.

[0061]The first address converter 130 is used to form a local network (hereinafter referred to as the first local network 20), and the second address converter 140 is used to form another local network (hereinafter referred to as the second local network 30) . The online server 150 is located in the Internet 40. The first network device 110 and the first address converter 130 are located in the first local network 20, and the first network device 110 is located behind the first address conve...

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Abstract

The present invention relates to a network communication system and a network penetration method, which includes: obtaining address information of a network device from an online server; generating a port number array composed of a plurality of port number values ​​according to the external port number in the address information; and according to the port The sequence of the multiple port number values ​​in the number sequence sends a connection packet to the external address in the address information until the confirmation packet from the network device is received. Wherein, one port value in the port number sequence is an external port number, a part of the remaining port number value is generated based on the external port number layer, and another part of the remaining port number value is generated by a random number.

Description

Technical field[0001]The present invention relates to the traversal technology of a network address converter, in particular to a network communication system and a network traversal method.Background technique[0002]With the rapid development of the Internet, the number of network devices that use Internet Protocol (IP) addresses has increased. Therefore, the IPv4 address space (address space) can be slowed down by setting up Network Address Translation (NAT). ) The problem of insufficient.[0003]The network address converter basically performs an action of converting the IP header, so that multiple network devices served by it can share an IP address to connect to the Internet. The network address converter uses only one IP address (that is, a public IP address) externally, and uses an internal IP address (private IP address) internally. Therefore, only a few public IP addresses can allow all local network devices to connect to the Internet.[0004]Nowadays, peer-to-peer (P2P) connect...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04L45/74H04L49/111
CPCH04L61/2532H04L61/256H04L61/2582H04L61/2567H04L61/2514H04L45/74H04L49/30
Inventor 刘开国
Owner THROUGHTEK TECH SHENZHEN