Description

Wireless ad-hoc network are decentralized type of network, it does not rely on a pre-existing infrastructure. Sybil attacks are vulnerable to Wireless networks, impersonates other nodes by broadcasting messages with multiple node identifiers (ID). A Sybil defense mechanism that leverages the network topologies to defend against Sybil attacks. Many counter measures based on Sybil defense, prevention, recovery in wireless channels exist, but depend either on detailed, multi-tap channel estimation, something not exposed on commodity 802.11 devices – which does not allow any trusted sources to vet potential participants. The Prior Round Reveal RSSI information is proposed to reduce the higher computation time.The Mason Test is protocol which makes Sybil defense in ad hoc networks IEEE 802.11 without any trusted authority. The protocol, first performs RSSI validation of behaving nodes from those falsified by malicious participants. Further, Attackers using motion to defeat the signal-print technique are detected through Sybil Classification. The proposed protocol defense against Sybil nodes in commodity 802.11 devices without any trusted certification.