A Novel approach to prevent Collaborative Black Hole attacks in MANETS using Cooperative Bait detection Scheme (CBDS)

Abstract

This paper presents a detail description of novel approach for collaborative attacks in Mobile Ad hoc Networks
(MANETs). Providing secure communication is one of important aspects In Mobile Ad hoc Networks (MANETs). Routing
protocols helps to transfer the packets from source to destination. Routing Protocols are vulnerable to collaborative black
hole attacks. When malicious nodes work together to drop the packets called collaborative attacks, i.e. Blackhole attacks
completely drops the packets in MANETs. We propose a Cooperative Bait detection (CBDS) mechanism for prevent
collaborative black hole attacks in MANETs. In this scheme integrates features of Dynamic Source Routing (DSR) and 2ACK
protocols. CBDS scheme merges the advantage of both proactive and reactive defense architecture and provide secure data
transmission using key distribution center (KDC). In the initial stage it uses Bait id concept to detect malicious node in the
network using proactive architecture, and it switches to reactive defense strategy. The scheme involves three steps, the bait
step, suspected path detection and the Confirmation Request. The bait step attracts the malicious node and next step detect
suspected path. The last step involves the confirmation of the given path is secure for the destination request from its
neighbor. To secure data transmission we use RSA decryption and encryption algorithm scheme. The CBDS outperforms the
DSR, 2ACK, and best-effort fault-tolerant routing (BFTR) protocols chosen as benchmarks in terms of packet delivery ratio
and routing overhead chosen as performance metrics.