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Internet of things security gateway, terminal equipment and system capable of shaping traffic

A technology of IoT terminals and security gateways, applied in the field of IoT terminals and systems, and IoT security gateways, can solve the problems of less traffic masquerading schemes, low traffic, low computing power, etc., and achieve the effect of reducing bandwidth consumption

Active Publication Date: 2022-03-01
UNIV OF SCI & TECH OF CHINA
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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 equipment and system capable of shaping traffic
  • Internet of things security gateway, terminal equipment and system capable of shaping traffic
  • Internet of things security gateway, terminal equipment and system capable of shaping traffic

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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 equipment and system capable of shaping traffic. The gateway includes: a traffic statistics module, which is used to obtain and filter data packets sent to a cloud server to obtain a tuple set; a traffic analysis module, which can Calculate the relevant data based on the obtained tuple set; the traffic database is used to store relevant data; the camouflaged traffic calculation module can randomly calculate and select the relevant data in the traffic database according to the time and frequency characteristics, and obtain the camouflaged burst traffic at this moment The decision command of the terminal device; the terminal device interaction module can distribute the decision command of the camouflage burst flow obtained by the camouflage flow calculation module to all connected IoT terminal devices, and notify each IoT terminal device to send simulated data packets; Each analog data packet received does not do any processing, and only sends the relevant ACK packet according to the corresponding protocol. It can improve the security of IoT communication with less analog traffic.

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 Patents(China)
IPC IPC(8): H04W12/12H04W12/121H04L12/66H04W88/16H04L67/12H04L9/40
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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