Data sending method, data receiving method and data communication system

A data transmission method and data packet technology, applied in the field of computer networks

Inactive Publication Date: 2018-02-27
BEIJING KNOWNSEC INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this technology uses reused ports to achieve communication without affecting the original service, which has a certain degree of concealment, bu

Method used

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  • Data sending method, data receiving method and data communication system
  • Data sending method, data receiving method and data communication system
  • Data sending method, data receiving method and data communication system

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Embodiment Construction

[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0027] figure 1 A schematic diagram of a data communication system 100 according to an embodiment of the present invention is shown. a, figure 1 The data communication system 100 in the data communication system 100 is only exemplary. In a specific practical situation, there may be different numbers of computing devices in the data communication system 100. The present invention does not limit the number of computing devices inclu...

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Abstract

The invention discloses a data sending method, a data receiving method and a data communication system. The data receiving method is suitable for being performed in a first computing device. The firstcomputing device and a second computing device are in communication connection and store data processing rules. The method comprises the steps of establishing an original socket and setting a socketoption field to appoint a mode of filling an IP data packet, wherein the IP data packet comprises a packet header and a data field; obtaining a preset protocol number and port number from the data processing rules; filling the corresponding field of the packet header of the IP data packet with an IP address and the protocol number of the second computing device; filling the data field of the IP data packet with a transmission layer data packet corresponding to the protocol number, wherein the transmission layer data packet comprises the packet header and the data field, and filling the corresponding field of the packet header of the transmission layer data packet with the port number; and filling the data field of the transmission layer data packet with to-be-sent data, thereby generatingthe corresponding IP data packet; and sending the IP data packet to the second computing device.

Description

technical field [0001] The invention relates to the field of computer networks, in particular to a data sending method, a data receiving method and a data communication system. Background technique [0002] With the continuous development of Internet technology, more and more people begin to access the Internet through various terminal devices to obtain required information and enjoy the convenience of life brought by Internet services. When the terminal equipment communicates on the network, most of them are established on the transport layer of the TCP / IP protocol. The two parties communicate through the IP address and port number. Because of this, most network security monitoring, network forensics, Traceability is based on the IP address and port used in communication. If it is possible to send and receive data packets under the transport layer, ports are not used, which greatly increases the concealment of communication. [0003] In the current data communication sche...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08H04L1/00
CPCH04L63/0236H04L1/0008H04L69/06H04L69/162H04L69/22H04L69/326
Inventor 刘兴文
Owner BEIJING KNOWNSEC INFORMATION TECH
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