The Internet of Things is called the third wave of the world information industry after computers and the Internet. At the same time as the triumphant advancement, the security crisis hidden behind the Internet of Things is gradually emerging. Like the TCP/IP network, the Internet of Things also faces a series of problems such as the manageability, controllability and quality of service of the network, and it is even worse. If these problems are not solved well, or there is no good solution, it will greatly restrict the further development of the Internet of Things. Because the network is a security risk, not to mention the distribution of random sensor networks, ubiquitous wireless networks, but also provides a broad soil for a variety of cyber attacks, security risks are more serious, if not handled well, the entire country Both the economy and security will be threatened.
Internet of ThingsThe Internet of Things (IoT) is a continuation and extension of the TCP/IP network. It extends and extends the user side of the network to any object and object. It is a new type of information transmission and exchange. The Internet of Things era is also called the post-IP era. At present, the academic community recognizes that “the Internet of Things is a large-scale information system composed of a sensing layer, a network layer and an application layerâ€. Its core structure mainly includes: sensing layers, such as smart cards, RFID electronic tags, sensor networks, etc. The role is to collect various information; the network layer, such as the computer, Internet, wireless network, fixed network, etc., whose main role is to be responsible for information exchange and communication; the application layer is mainly responsible for information analysis and control, decision making, so that Achieve user-customized intelligent applications and services, and ultimately realize the connection of things and things, people and things, and construct an "Internet of things" that covers everything in the world.
Key technologies of the Internet of Things sensing layer include RFID technology, infrared sensors, global positioning systems, laser scanners, sensor network technologies, etc. These technologies are the technical basis of intelligent information sensing devices. Key technologies for the network and management include cloud computing, 4G technology, SOA, and more. Digital signals generated by electronic smart media placed on animals, plants, machines and articles can transmit information over the wireless network anytime and anywhere. The use of cloud computing technology enables real-time dynamic management of hundreds of millions of items. In terms of the architecture of the Internet of Things, the Internet of Things represents convergence, regardless of whether its infrastructure uses wireless sensor networks or any other network infrastructure.
The real value of the Internet of Things lies in the Internet, not in things. Because it lies in the network, it is complicated. At present, the technology of the IoT awareness layer is relatively mature, and has been successfully applied in various industries. However, if the perceived information does not have a huge network system to manage and integrate them, there is no deep application, such a network. It doesn't make sense. To build such a network platform called a complex giant system, to realize the comprehensive management of the business, the fusion of information and the classification, the guided transmission and interaction of data, etc., its complexity and difficulty are conceivable. And know.
Internet of Things security threatsWhat are the important security threats facing the Internet of Things? How is it different from the security threats faced by the traditional Internet? For the discussion of this issue, we take the sensory layer as the sensor network and RFID as an example.
First, the sensor network is an environment with serious uncertainties. The widespread sensing intelligence node is essentially monitoring and controlling various devices on the network. They monitor different content of the network and provide event data in various formats to characterize the current state of the network system. However, these sensing intelligent nodes are the best place for foreign invasion. From this perspective, the data of the Internet of Things perception layer is very complex, there are frequent conflicts and cooperation between data, with strong redundancy and complementarity, and it is massive data. It has strong real-time characteristics and is also multi-source heterogeneous data. Therefore, compared with the traditional TCP/IP network technology, all network monitoring measures and defense technologies not only face more complex structure of network data, but also have higher real-time requirements, in network technology, network security and other related The subject area will be a new topic and a new challenge.
Secondly, when the Internet of Things sensing layer mainly uses RFID technology, the items embedded in the RFID chip can not only be easily perceived by the owner of the item, but also others can be perceived. Especially when such perceived information is transmitted over a wireless network platform, the security of the information is rather fragile. How to provide a strong security system for protection in the process of sensing, transmission and application is a problem. Similarly, there are a series of security risks in the transport layer and application layer of the Internet of Things, and corresponding corresponding and effective security prevention strategies and technologies are urgently needed. Only in the two layers can learn from the existing technology of TCP/IP network, and cross the traditional network confrontation. In short, the security of the Internet of Things must be highly valued by all walks of life. In terms of the architecture of the Internet of Things, in addition to the traditional network security issues such as traditional TCP/IP networks, wireless networks and mobile communication networks, the Internet of Things also has a large number of special security problems of its own, and most of these specialities come from Perceptual layer. We believe that the main threats to the IoT's perception layer are as follows:
1. Security privacy
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