Abstract
As the IoT continues to grow over the coming years, resource-constrained devices and networks will see an increase in traffic as everything is connected in an open Web of Things. The performance- and function-enhancing features are difficult to provide in resource-constrained environments, but will gain importance if the WoT is to be scaled up successfully. For example, scalable open standards-based authentication and authorization will be important to manage access to the limited resources of constrained devices and networks. Additionally, features such as caching and virtualization may help further reduce the load on these constrained systems. This work presents the Secure Service Proxy (SSP): a constrained-network edge proxy with the goal of improving the performance and functionality of constrained RESTful environments. Our evaluations show that the proposed design reaches its goal by reducing the load on constrained devices while implementing a wide range of features as different adapters. Specifically, the results show that the SSP leads to significant savings in processing, network traffic, network delay and packet loss rates for constrained devices. As a result, the SSP helps to guarantee the proper operation of constrained networks as these networks form an ever-expanding Web of Things.
Highlights
In recent years, the Internet of Things (IoT) has increasingly become a hot topic in industry, academia, the do-it-yourself community and consumers
Session handshake and the end of the DTLS session
This is due to the DTLS session re-use in the Low-power and Lossy Networks (LLNs), which saves, when comparing the median cases, thirteen packets in the LLN, as the DTLS handshake in the LLN can be avoided in the TER configuration
Summary
The Internet of Things (IoT) has increasingly become a hot topic in industry, academia, the do-it-yourself community and consumers. Businesses are attracted by the new product opportunities and new sources of revenue that the IoT promises to bring. Academia is interested in the many new problems and issues that arise when deploying billions of devices on the Internet. These issues include big data analytics, energy efficient communications, large-scale deployments, management of devices, communication protocols, security models, data privacy and many more. Consumers are drawn to the IoT because IoT products promise to bring improvements and novel services to their daily lives. Examples of IoT domains include smart home, smart health, smart transportation, smart factory, smart grid and many more [3]
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