Security analysis of WiMAX network: With Misbehavior Node attack

Security has grown to be a major concern in regulate to provide restricted communication in Wireless as well as wired environment. As far as security concern related to WiMAX network i.e for PHY Layer (Jamming and scrambling) and MAC Layer attack protection has been provided by (AES, PKM etc) one separate Layer(Security Layer). In current scenario Network Layer security is more vital and we have analyzed and simulated the effect of misbehaving node (Without MAC Layer). It misbehaves in the sense that the node does not respect its MAC protocols and avariciously sends its packets without any restriction (Flooding of packets) because it doesn´t follow any protocol. Using OPNET we investigate the performance comparison analysis with and without misbehavior node. The packets transmitted in a network from Servers to Clients not only indicate the maximum amount of information provided but how much secure information is present in the network is the major point of deliberation. So many unauthorized clients are present in the network which can destroy a packets flowing to authorize node. One of the attacks is Misbehavior Node attack (Network Layer), in which the node does not follow any protocol but continuously transmits Constant Bit Rate (CBR) packets, which introduces noise in the network and upset the performance of the network.