According to Microsoft, one specific type of project accounts for nearly a quarter of all IOT programs in the world, namely smart city project.

According to the report released by 451 research in February this year, analyst Johan vermij pointed out that the increasing attention to smart cities has led to the current situation, that is, smart cities currently account for 23% of Internet of things projects worldwide. ” In fact, in the “IOT in action” activity held by Microsoft for the fourth time in Amsterdam earlier this year, the technology company listed the smart city as the focus of its work for the first time.

As the super interconnected smart city becomes more and more critical to the normal operation of urban areas, researchers have studied the role of intelligent Internet of things edge devices and edge computing. A study on smart cities with edge computing written by senior members of the Institute of electrical and Electronics Engineers (IEEE) points out that edge technology is “feasible for the development of real-time smart cities”.

However, after deriving five parameters (situational awareness, scalability, sustainability, storage and security) for rigorous evaluation, the researchers determined that “security plays a very important role in other factors, so it must be implemented in the design of intelligent applications.”

Edge computing and devices do not always put security first, which is why it is very important for urban IT departments to use software defined boundary (SDP) clients to create a truly secure, hyper connected smart city. When it comes to smart cities, security is not an easy thing. If appropriate preventive measures are not taken, a large number of equipment and data in the city will reveal the inherent security risks in metropolitan areas.

Software defined boundary (SDP), also known as “black cloud”, is a new computer security method. SDP requires that the endpoint be authenticated and authorized before obtaining network access to the protected server. Then, an encrypted connection is created in real time between the requesting system and the application infrastructure. SDP hides the user’s data, infrastructure and other key IT assets in the user’s own black cloud, whether these assets are located in the public cloud or private cloud, in the DMZ area or data center, making these key IT assets invisible to the outside world. SDP provides zero visibility and zero connection. The connection can be established only after the endpoints prove that they can be trusted, allowing legitimate traffic to pass through. This method can basically prevent all network-based attacks.

Experts predict that by 2025, we will have about 80 billion smart devices (with available Internet connections), and urban areas are expected to generate 180 ZB of data in the next five years

Although cities need intelligent edge devices to help them cope with many challenges and complexities, they also need edge computing to ensure security. As the IEEE research points out, edge devices indispensable overcome the inherent limitations of “high latency, non scenario aware behavior and no support for mobility” of standard cloud computing, “which constitutes a serious restriction on its use”. In a real-time intelligent environment. SDP software can ensure that smart cities have secure connectivity, not only from the data center, but also from the cloud to the edge.

Protect Edge Safety

Let’s take a look at how SDP can achieve such high security for smart city projects using smart IOT edge devices.

First, SDP software ensures that intelligent IOT edge devices must comply with the software’s “zero trust” architecture. This means that devices, whether in the data center or in the cloud, can only retrieve the exact applications they are authorized to access by it. Another option that occurs when there is no SDP is that edge devices have unrestricted access to the entire network. For the smart city environment, network level access is not secure enough, which is why SDP only allows access at the application level. This method eliminates the ability of hackers to conduct horizontal attacks, and eventually leads to the security requirements of smart cities, that is, “it is safe by default”.

Some other benefits of using SDP with smart edge devices:

Direct data transmission: with the help of encrypted microchannel and public key authentication, SDP can realize secure connection and transfer the data channel directly from the intelligent IOT edge device to the destination in the cloud or local location.

Invisible to hackers: using the enhanced user datagram protocol (UDP) with randomly generated ports, some SDP software can prevent unauthorized users from detecting microchannels.

Easy to manage and configure: with only a few seconds of connection, it can easily integrate with the network infrastructure without relying on devices. SDP software avoids many common problems, especially compared with virtual private network (VPN), and their inherent troubles (not only related to security, but also related to configuration and management).

Improved performance: with SDP, channels can be configured to link edge devices to edge hubs on hardware, and it departments can ensure high availability of channels and provide built-in failover functions.

Smart cities need intelligent IOT edge devices to help them meet the challenges of urban areas, but they need not only solutions, but also secure connections. The combination of SDP can provide smart devices with the security required by today’s smart cities to meet their severe challenges.

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