Abstract |
This paper reviews security issues on Adhoc network and Ad hoc
On-Demand Distance Vector (AODV) protocol. In Adhoc
network, active attack i.e DDOS, blackhole and malicious nodes
attack can easily occur. These attacks can decrease the
performance of the communications protocol. In this paper,
AODV was chosen as the basic protocol to perform simulations
due to the fact that the AODV protocol can run well in high
mobility and high traffic communication. Many AODV protocol
variants have been developed. Currently, AODV protocol has
been developed to improve the performance in terms of
efficiency and security. To improve the performance of the
AODV protocol, we proposed AODV-UI. AODV-UI has been
developed by adopting a reverse request method introduced by
R-AODV protocol, and it can run on the gateway modes. To
improve the security in AODV, Path Hopping based on Reverse
AODV (PHR-AODV) have been developed. In this paper we
will evaluate the performance of AODV-UI protocol and PHRAODV protocol under DDOS, blackhole and malicious nodes
attacks using NS-2 simulator. The topology is fixed, and the
attacks come from inside the network. The performance
evaluation performed includes the packet delivery ratio, packet
lost and end to end delay. The result of the simulation shows
that the performance of AODV-UI protocol is better than PHRAODV in terms of packet delivery ratio, packet lost and end to
end delay under malicious and DDOS attack. The simulation
shows that under blackhole attack, PHR-AODV gives a better
performance than AODV-UI. |