A Survey on DDoS Attacks on Network and Application Layer in IoT

IoT makes the devices remotely accessible and these devices are used to collect data for analysis at a later stage. IoT was expected to bring revolutionary changes in the way people use technology. However, security vulnerabilities in IoT make it insecure towards the possible attacks like DoS/DDoS attacks. Detection of DDoS attacks is required to protect the IoT systems from attackers and evade financial losses. This paper presents a review of solutions proposed for the detection of DDoS attacks in the network layer and application layer of IoT. Application layer attacks have been increasing because they are sophisticated and are difficult to differentiate from real users. A huge number of papers have contributed to the network layer but issues are still faced in application layer in IoT. We have reviewed the issues in application layer protocols in IoT as well. The need of development of countering DDoS in application layer of IoT is also addressed.