No abstract

No abstract

A network in which the vehicular nodes are free to join or leave the network is known as vehicular ad hoc network (VANET). Either vehicle to vehicle or vehicle to infrastructure types of communication is performed in this decentralized type of network. The identification and elimination of Distributed-Denial of Service (DDoS) attacks from VANETs is the major objective of this research. The nodes that can flood victim nodes with large numbers of rough packets are chosen by the malicious nodes in this kind of attack. Identifying such malicious nodes from the network is an important research objective to be achieved. The technique which is proposed in this research is based on the two step verification. In the two steps verification technique, when the network performance is reduced to threshold value then the traffic is monitored that which node is sending data on such high rate. NS2 simulator is used to implement the proposed technique. With respect to various performance parameters, the proposed technique is analyzed. A comparative evaluation of results achieved from proposed and existing techniques is also done to conclude the level of improvement achieved.

Vehicle nodes can join or exit the VANET, which is a decentralized sort of network. Due to the network's dynamic nature, reactive routing methods are used for path establishment from source to destination. Reviewing current protocols that are regularly utilized in various proposals and application scenarios is the goal of this work. This review helps when developing selection criteria or metrics for a new protocol. The systematic literature review (SLR) is used in this survey on VANET routing protocols to analyze the most recent state-of-art recommendations. Additionally, in this study, a number of proactive routing and reactive routing protocols are defined. Reactive routing protocols construct a route from source to destination using the most recent network data. The proactive routing protocols establish paths using network-defined information. Routing tables are used by proactive routing technologies to construct paths. Analysis shows that reactive routing strategies outperform proactive routing techniques. The research shows that speed and distance are the most frequent and adaptable metrics in a procedure. Finally, the application of various methods is discussed along with some feasible directions for further research.