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Data transmission method, device, equipment and medium based on two-way network gatekeeper

A data transmission method and a bidirectional network technology, applied to equipment and media, a data transmission method based on a bidirectional gatekeeper, and the field of devices

Active Publication Date: 2021-12-17
BEIJING QIANXIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no mature design scheme and application technology to realize the transparent transmission of UDP protocol

Method used

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  • Data transmission method, device, equipment and medium based on two-way network gatekeeper
  • Data transmission method, device, equipment and medium based on two-way network gatekeeper
  • Data transmission method, device, equipment and medium based on two-way network gatekeeper

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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0026] The embodiment of the present invention proposes a data transmission method based on a two-way gatekeeper, which can be used for transparent transmission of all application layer protocols based on UDP.

[0027] Two-way security isolation gatekeeper, referred to...

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Abstract

The invention provides a data transmission method based on a two-way network gatekeeper. The two-way network gatekeeper includes an external host and an internal host. The external host and the access terminal are in the first security domain, and the internal host and the service terminal are in the second security domain. In the first security domain, the access terminal sends a UDP data message to the external host; the external host judges whether the UDP data message is legal, and if so, sends the source IP, source port, destination IP and destination IP in the UDP data message The port is added to the UDP data message to form a private protocol data message and sent to the internal host; in the second security domain, the internal host strips the source IP, source port, destination IP, and destination IP from the private protocol data message. port, and send the UDP data packet to the service terminal according to the destination IP and destination port. This method supports any application layer protocol that uses UDP for data transfer. The present invention also provides a data transmission device, equipment and computer-readable medium.

Description

technical field [0001] The invention relates to the field of data security, in particular to a data transmission method, device, equipment and medium based on a two-way network gatekeeper. Background technique [0002] The TCP / IP four-layer model is named link layer, network layer, transport layer and application layer from top to bottom. All functional modules of the gatekeeper work at the application layer and need to strip and reassemble the protocol. That is to say, the entity monitored by the functional modules should be the address of the local machine, and all messages with destination addresses other than the local machine cannot be detected by the protocol stack. deal with. In order to realize UDP protocol transparent transmission (the client accesses the real server address, the target address in the UDP protocol message is not the local address), the message needs to be processed twice at the network layer and the transport layer. At present, there is no mature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L63/02H04L63/0236H04L63/0245H04L63/029H04L63/10H04L69/164H04L69/22
Inventor 杨威
Owner BEIJING QIANXIN TECH
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