  The Internet of Things (IoT) ecosystem allows communication between billions
of devices worldwide that are collecting data autonomously. The vast amount of
data generated by these devices must be controlled totally securely. The
centralized solutions are not capable of responding to these concerns due to
security challenges problems. Thus, the Average Packet Transmission RREQ
(APT-RREQ) as an effective solution, has been employed to overcome these
concerns to allow for entirely secure communication between devices. In this
paper, an approach called LSFA-IoT is proposed that protects the AODV routing
protocol as well as the IoT network against flooding. The proposed method is
divided into two main phases; The first phase includes a physical layer
intrusion and attack detection system used to detect attacks, and the second
phase involves detecting incorrect events through APT-RREQ messages. The
simulation results indicated the superiority of the proposed method in terms of
False Positive Rate (FPR), False Negative Rate (FPR), Detection Rate (DR), and
Packet Delivery Rate (PDR) compared to REATO and IRAD. Also, the simulation
results show how the proposed approach can significantly increase the security
of each thing and network security.
