Abstract:
A black hole attack is a severe attack that can be easily employed against routing in mobile
ad hoc networks. A black hole is a malicious node that falsely replies for any route requests
without having active route to specified destination and drops all the receiving packets. If
these malicious nodes work together as a group then the damage will be very serious. This
type of attack is called cooperative black hole attack. In [9], we proposed a solution to
identifying and preventing the cooperative black hole attack. Our solution discovers the
secure route between source and destination by identifying and isolating cooperative black
hole nodes. In this paper, via simulation, we evaluate the proposed solution and compare it
with other existing solutions in terms of throughput, packet loss percentage, average end-toend
delay and route request overhead. The experiments show that (1) the AODV greatly
suffers from cooperative black holes in terms of throughput and packet losses, and (2) our
solution proposed in [9] presents good performance in terms of better throughput rate and
minimum packet loss percentage over other solutions, and (3) our solution proposed in [9]
can accurately prevent the cooperative black hole attacks.