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Method and system for processing NAT equipment, NAPT equipment and TCP application drainage

A processing method and equipment technology, applied in the Internet field, can solve problems such as the inability to realize TCP application drainage, and achieve the effect of ensuring service quality

Active Publication Date: 2015-07-01
HILLSTONE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The main purpose of the present invention is to provide a processing method and system for NAT equipment, NAPT equipment, and TCP application drainage, so as to solve the problem that TCP application drainage cannot be realized in NAT or NAPT mode

Method used

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  • Method and system for processing NAT equipment, NAPT equipment and TCP application drainage
  • Method and system for processing NAT equipment, NAPT equipment and TCP application drainage

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Embodiment Construction

[0040] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0041] figure 2 It is a processing system for TCP application traffic diversion according to the first embodiment of the present invention, such as figure 2 As shown, the processing system includes a client 10, a NAT device 30 and a server 50, and the interaction process of the three is as follows image 3 As shown, the client 10 has the intranet IP address C.IP, and needs a NAT device to convert the intranet IP address to the public network IP address when accessing the server 50, wherein the corresponding outgoing interfaces of the public network are e1 and e2, and the client The message sequence list of the TCP interaction process between the terminal 10 and the server 50 is shown in Tab...

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Abstract

The invention discloses a method and system for processing NAT (Network Address Translation) equipment, NAPT (Network Address Port Translation) equipment and TCP (Transmission Control Protocol) application drainage. The method comprises the following steps that: the NAT equipment receives a message with a TCP load, sent by a client end to a server, and the message is subjected to application identification and is re-routed on the basis of the application type and a destination IP address, then the message is not directly sent to the server after being subjected to network address conversion and is hand-shaken with the server on the NAT equipment, namely, a TCP connection is re-established; and then the message with the TCP load is sent to the server, and the TCP application drainage under an NAT mode can be realized. The method for processing the TCP application drainage under the NAPT mode is similar to a method for processing the TCP application drainage under the NAT mode, therefore, according to the invention, the TCP application drainage under the NAPT mode can be realized, therefore, enterprises and operators can be helped for effectively utilizing bandwidth resources, and service quality of important applications is ensured.

Description

technical field [0001] The present invention relates to the field of the Internet, in particular, to a NAT device, a NAPT device, and a processing method and processing system for TCP application drainage. Background technique [0002] With the rapid development of the Internet, various applications are born every day. Applications such as P2P (peer-to-peer) and Web video (that is, online video) take up a lot of bandwidth. In order to ensure the quality of service of important applications, enterprises and operators need to select routes according to the types of applications. For example, direct unimportant applications that occupy a large The application leads to a link with better quality. [0003] When creating a new session (that is, when receiving the first message of the connection), the application is identified according to the content of the message, and then the routing search is performed based on the IP, port, and application information. When the network dev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12H04L12/70
Inventor 李矩希
Owner HILLSTONE NETWORKS CO LTD
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