Abstract
An Ad Hoc System is a set of wireless mobile nodes that creates a temporary dynamic network without using any existing network structure or centralized network system. The nodes utilize different routing protocols to communicate with each other, i.e., to forward packets of data to other nodes in the network. There are different classes of wireless ad hoc networks which include mobile ad hoc networks, vehicular ad hoc networks, wireless sensor networks, etc. Nowadays, it is quite challenging to ensure security in ad hoc network due to the lack of centralized privileges and limited resources. DDoS and Sybil attacks are the two most severe security threats in ad-hoc networks. Hence, significant security measures are essential for secured packet delivery operations. In our project, we explore the effects of multiple attacks in mobile ad hoc networks for multiple routing protocols. In the first scenario, we implement sybil attack on 20-node MANET network under AODV routing protocol. From the 2nd scenario to the 4th scenario, we conduct DDoS attack on 50-node wireless peer to peer network for AODV, DSR, and TORA routing protocols. Furthermore, we simulate different scenarios by using the network simulator of Riverbed Modeler Academic Edition 17.5. The performance results of our project work are evaluated based on parameters such as the different number of nodes, load, media access delay, end-to-end delay, number of packets dropped, throughput, FTP download response time, etc. Overall, we present the behavior of performance parameters when there is an attack to assess security vulnerabilities in ad hoc networks in this project.
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