A Petri Net Design toward Prolonging Operational Lifetime of Ad Hoc Networks under Flooding Attack

摘要

The mobile ad hoc networks (MANETs) are vulnerable to flooding attacks launched through compromised nodes or intruders. One crucial type of flooding attacks called RREQ flooding appears to be inevitably proliferated in wireless network. For the RREQ flooding attack, attackers would launch massive RREQ packets with out-of-domain IP address being its destination node. The proposed approach can suppress redundant RREQ packets by the co-operation of destination node and neighbor nodes under one-hop range of attacking node. Much of useless RREQ packets can then be avoided to transmit and receive by legal nodes. In other words, the massive saving of radio energy in MANET can prolong the lifetime of the MANET. To model the proposed approach for qualitative analysis, a Petri Net has been designed to model all relevant system aspects in a concise fashion. On quantitative viewpoint, relevant network simulations have been conducted to validate the proposed scheme approaching the practical scenario. The experimental results reveal that a significant improvement level on lifetime elongation for the MANET can be achieved.