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Internet of things security gateway, terminal device and system capable of shaping flow

A technology of IoT terminals and security gateways, applied in the fields of IoT security gateways, IoT terminals and systems, can solve the problems of low traffic, few traffic camouflage schemes, and low computing power, and achieve the effect of small traffic and reduced bandwidth consumption.

Active Publication Date: 2020-12-04
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on the problems existing in the prior art, the purpose of the present invention is to provide an IoT security gateway, an IoT terminal and a system capable of shaping traffic, which can solve the problem that existing IoT traffic masquerading schemes are few, while traditional Internet traffic The camouflage method is not suitable for IoT devices with low computing power and low traffic

Method used

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  • Internet of things security gateway, terminal device and system capable of shaping flow
  • Internet of things security gateway, terminal device and system capable of shaping flow
  • Internet of things security gateway, terminal device and system capable of shaping flow

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Embodiment

[0072] refer to image 3 , the Internet of Things security system capable of traffic shaping in the embodiment of the present invention includes: an Internet of Things gateway (as a central device), n Internet of Things terminal devices and a plurality of cloud servers, wherein n≥1;

[0073] The traffic statistics module of the Internet of Things gateway filters each data packet transmitted from the Internet of Things terminal device to obtain a tuple. The tuple includes the device id, time stamp, communication protocol, data type, and data packet length. Contains information that can be obtained through eavesdropping attacks, so masquerading at this level can protect devices from eavesdropping attacks. The concept of device event flow is proposed here: when an event occurs, the data packets generated by a certain device belong to the event flow of the device on the event. When the timestamp difference between two consecutive data packets exceeds a set threshold, it is confir...

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Abstract

The invention discloses an Internet of Things security gateway, terminal device and system capable of shaping flow, and the gateway comprises a flow statistics module which is used for obtaining and filtering a data packet transmitted to a cloud server, and obtaining a tuple set; a flow analysis module for calculating related data based on the obtained tuple set; a flow database which is used forstoring related data; a camouflage flow calculation module which can randomly calculate and select related data in a flow database according to time and frequency characteristics to obtain a decisioninstruction of camouflage burst flow at the moment; a terminal device interaction module which can distribute the determination instruction of the camouflage burst flow obtained by the camouflage flowcalculation module to all connected Internet of Things terminal devices at the moment, and notify each Internet of Things terminal device to send an analog data packet; wherein each received analog data packet is not processed, and the related ACK packet is sent only according to the corresponding protocol. The communication security of the Internet of Things can be improved with less simulationflow.

Description

technical field [0001] The invention relates to the security field of the Internet of Things, in particular to an Internet of Things security gateway capable of shaping traffic, an Internet of Things terminal and a system. Background technique [0002] The development of the Internet of Things (IoT) has promoted the progress of various wireless communication technologies. Communication protocols such as Wi-Fi, Bluetooth, ZigBee, LoRa, and NB-IoT are widely used in scenarios such as smart homes, smart factories, and smart cities. A large number of terminal nodes send the collected data to the Internet through wireless routers or gateways. There are predictions that in the Internet of Things, the number of connected devices will be in the billions. However, due to the openness of wireless networks, anyone can obtain and analyze data packets in the air, destroying user privacy. [0003] At present, in the traditional Internet, traffic analysis attacks and traffic masquerading...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/12H04W88/16H04L12/66H04L29/06H04L29/08
CPCH04W12/12H04L12/66H04W88/16H04L67/12H04L63/1408
Inventor 李向阳张燕咏郭星俞小萌李强
Owner UNIV OF SCI & TECH OF CHINA
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