Evaluation of Security Methods for the MQTT Protocol

Sammanfattning: There is an increasing trend of Internet of Things (IoT) solutions, and more products are getting connected to the internet. It is therefore important to create a protected link to prevent malicious attacks. This report includes Transport Layer Security (TLS) to create a secure link for the Message Queuing Telemetry Transport (MQTT) protocol. This study investigates how TLS affects the performance of internal system in terms of Energy consumption and time delay. For a use case in the form of a wireless emergency stop for conveyor belt. In summary, this resulted in the fact that despite large calculation models within TLS, the protocol had a minimal impact on the overall system. This is due to the MQTT protocol which accounted for the major impact of the system. There are attacks that TLS does not provide direct protection against, among these is Denial of Service (DoS) Attacks. Furthermore this study examines other protectionsolutions such as An Intrusion prevention System (IPS). That was configured and showed promising results against DoS attacks. Where the study examines other protection solutions and the application of an Intrusion Prevention System (IPS) is configured and tested to protect against Denial of Service attacks with successful results.