Effect of Wormhole Attacks on MANET

Abstract

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Mobile Ad hoc Network (MANET) is an infrastructure-less and self-organizing network of autonomous mobile nodes with wireless interfaces to construct a temporary wireless network using no dedicated routers, so the communication channels are freely accessible by the legitimate as well as the non-legitimate users. In MANET, each node operates as a router and transmits packets between source and destination while there is no assistance from the base station. Nodes within the transmission range of the source node accept the packet sent by the source and forward it along the route to the destination node. Due to the high mobility and dynamic nature, MANETs are more vulnerable to wormhole attacks, where the attacker may sniff the packets at one location and retransmit them to some other location inside or outside the network, resulting in the loss of throughput and bullying privacy. A wormhole attack is possible even if the communication channel provides authenticity and confidentiality, causing a serious security threat to wireless networks. Here, we are discussing the effects of wormhole attack on MANETs.