P-Method: Improving AODV Routing Protocol for Against Network Layer Attacks in Mobile Ad-Hoc Networks

Mobile ad hoc networks are regarded as a group of networks consisted of wireless systems which developing together a network with self-arrangement capability. no constant communication infrastructure and use central nodes to communicate with other nodes. Despite lots of advantages, these networks face severe security challenges, since their channels are wireless and each node is connected to central node. One of these concerns is the incidence of network layer attacks (Black and worm hole attack) is one kind of routing disturbing attacks and can bring great damage to the network. In this attack, an attacker cheats nodes, absorbs their packets and then deletes them. Hence, black hole and wormhole disrupts communication, or even makes it impossible in some cases. In this paper, we proposed P-Method for against network layer attacks in mobile Ad-Hoc networks based on hop count and RTT test. The proposed algorithm is implemented in ns2.35 environments and is compared with AODV And DSR under attacks, and improved AODV in different scenarios. Simulation results revealed that the (P-method), is better than AODV And DSR under attack in terms of packet dropped, packet loss, throughput, and jitter.

Mobile ad hoc networks, AODV and DSR routing protocol, Black hole attack, Worm hole, P-Method