sQoS: The design and prototyping of secure QoS for process automation system

This paper presents the methods to prevent the QoS Spoofing attack, which disturbs the real-time network communications with malicious packets to delay or drop the control packets for Process Automation. The attack is new and unique threat introduced to the Process Automation, when the Process Automation users utilize wireless sensor network via plant wide backhaul network. sQoS is a HMAC based lightweight method to protect the real-time network communications from QoS Spoofing attack. This paper represents the design and prototyping of sQoS with the measurement result of its overhead time.