Cooperative Strategy to Secure Mobile P2P Network

Abstract

Mobile peer-to-peer networking (MP2P) is a relatively new paradigm compared to other wireless networks. In the last years, it has gained popularity because of its practice in applications such as file sharing over Internet in a decentralized manner. Security of mobile P2P networks represents an open research topic and a main challenge regarding to their vulnerability and convenience to different security attacks, such as black hole, Sybil...etc. In this paper, we analyze the black hole attack in mobile wireless P2P networks using AODV as routing protocol. In a black hole attack, a malicious node assumes the identity of a legitimate node, by creating forged answers with a higher sequence number, and thus forces the victim node to choose it as relay. We propose a solution based on a modification of the well-known AODV routing protocol and taking into account the behavior of each node participating in the network. Performances of our proposal are evaluated by simulation.