Detection of SYN Flooding Attack in Mobile Ad hoc Networks with AODV Protocol

Mobile ad hoc networks (MANETs) play a vital role in ubiquitous computing. Multimedia communication is the main aspect of MANETs in emergency networks. Security is the major concern in such networks. MANETs are prone to many security problems because of their dynamic changing nature. One of the main attacks that affect any communication in a MANET is the denial-of-service attack. In this paper, such an attack called SYN flooding attack and its detection method are discussed. The presence of the SYN flooding attack in networks may not be identified correctly at an early stage. This leads to the denial of legitimate services at the multimedia server. An algorithm is presented in this paper to detect the presence of the SYN flooding attack at an early stage. The malicious node, instead of launching the SYN flooding attack, may try to delay the communication. This algorithm also finds such malicious nodes which try to affect the multimedia communication in MANETs by introducing unnecessary delays. The solution method involves game theory to form a game between the malicious node and the multimedia server node. The performance of the detection algorithm is verified by analyzing the various quality of service parameters relevant to multimedia communication.