Summary
Due to the new technologies of the Internet of Things (IoT), connected objects have become smart interactive devices. However, despite their imminent advantages, whether for the daily life of users or in professional contexts, and the various security solutions proposed in literature in particular, the security of IoT networks is still a paramount issue given to the amount of confidential data that circulates through these technologies. In other words, among the IoT protocols that suffer from security issues, routing protocol for low power and lossy networks (RPL) is considered to be one of the most widely used protocols in the deployment of constrained IoT networks with limited resources (storage and energy constraints for example). On this basis, this article investigates in the first part a security flaw in the RPL protocol by carrying out an attack against the rank value of the RPL in an IoT environment. In the second part, a mitigation scheme to avoid it using a trust threshold is proposed. The malicious behavior of the attack and the effectiveness of the proposed scheme were assessed by detailed simulations using the Cooja simulator, in terms of successful detection rate, average network hops and global energy consumption. To conclude, a fair comparison between the different simulation results has been adopted using the Friedman statistical test, and a discussion has been presented with some future works concerning security against rank attack.
The expeditious development of information technology provides opportunities for new remote and monitoring critical systems to be performed based on IoT technologies and M2M communications. This paper discusses important QoS issues in IoT systems and suggests a new QoS model for critical IoT applications, where each information must be delivered only once and in real-time. The proposal is based on the MQTT protocol with dynamic QoS handling, accordingly to the information importance. A prioritization scheme is adopted using different traffic classes, considering specific requirements for real-time communications and reliable operations while reducing end-to-end delay, packet loss, bandwidth, and energy consumption.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.