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Network control method and device

A network control and authorization network technology, applied in the field of computer networks, can solve the problem that network control cannot distinguish users, etc.

Active Publication Date: 2018-12-18
北京明朝万达科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a network control method and device to solve the problem that network control cannot distinguish users in the network control scheme in the related art

Method used

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Embodiment Construction

[0027] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] refer to figure 1 , which shows a flow chart of the steps of an embodiment of a network control method of the present invention, which is applied to a terminal device, and the method may specifically include the following steps:

[0029] Step 101, intercepting the first TCP handshake packet;

[0030] TCP (Transmission Control Protocol) requires a three-way handshake before sending new data. Therefore, in order to perform network control on terminal devices, the first TCP handshake request, that is, the TCP first handshake packet, can be intercepted.

[0031] Wherein, the first TCP handshake packet may be a data packet sent by the terminal device as a sender, or may be a data packet received by the terminal device as a rece...

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PUM

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Abstract

The invention provides a network control method and a device. The method comprises the following steps: intercepting a TCP first handshake packet; If the first TCP handshake packet is a transmitted data packet, the handshake packet is forged to obtain a forged handshake packet, and the forged handshake packet includes at least one user information of a login user of a terminal device authorizing network communication;if the TCP first handshake packet is a received data packet, judging whether at least one user information in the TCP first handshake packet includes the login user information ofthe terminal equipment; if at least one user information in the TCP first handshake packet includes the login user information of the terminal equipment, restoring the intercepted forged handshake packet to the TCP first handshake packet before forgery and sending them;if the TCP first handshake packet is a normal handshake packet, or if at least one user information in the forged handshake packet does not include the login user information of the terminal device, discarding the intercepted TCP first handshake packet.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a network control method and device. Background technique [0002] At present, when controlling the network access of terminal equipment, the common method adopted is to intercept the network access data packet on the terminal equipment. The network access data packet can be sent to the outside or received from the outside; The network access data packet judges whether its IP address and port number are preset IP addresses (including multiple IP addresses) and preset port numbers (including multiple port numbers), thereby deciding to prohibit or release the network access data packet. [0003] For example, the IP address of the terminal device 1 used by a certain manager of the enterprise is within the control range of network access, that is, the preset IP address includes the IP address of the terminal device 1, then if the terminal device used by the manager is from ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L63/0236H04L63/0254H04L63/0876H04L63/102
Inventor 王志刚彭洪涛王志海喻波曲恩纯
Owner 北京明朝万达科技股份有限公司