TTSASA: Three Tier Security against Sybil Attack

Abstract

As there are limited resources in Mobile Adhoc Network (MANET) and in absence of a centralized system, security is a major concern. In a Sybil attack, intruders use multiple profiles at once or steal the identity of a trusted node in the network. This attack can cause a variety of misinterpretations in the network, such as lowering the trust of authorized nodes by utilizing their credentials, disrupting multicarrier transmission so that messages do not reach their intended destination, and so on. In the present study, a technique for the detection of Sybil attacks is proposed based on the combination of the radio range and trust value, very effectively sothat it has negligible chances of detecting false positives and false negatives. The proposed technique works on both Whitewashing attacks and simultaneous attacks. To evaluate the performance of the proposed technique, a comparison of the proposed technique is done with SQUEER, ATRP, STEAR and ETERS in terms of packet delivery ratio (PDR), throughput, average energy consumption, number of Sybil nodes detection and number of false positives. The results have shown that our proposed technique has outperformed the existing techniques.