Detection of Vampire Attack in Wireless Adhoc Network
Published on Sep 18, 2019
Mobile ad-hoc network is an infrastructure-less network in which the routing operation play important role in route discovery between communicating nodes. Due to infrastructure-less characteristic of ad-hoc network, it has different issues like routing, MAC layer, security etc. One of them is security issue which needs more concern. Vampire attacks modify targeted packets. It does so by preparing long routes or misguiding the packets. Malicious nodes use false messaging, or modify routing information.
This action affects the bandwidth and node battery power. Routing as well as network resources gets protection from vampire attack; an approach is proposed to detect malicious routing packets.
Present work gives result for different routing based attacks and discusses the issue of a serious resources consumption attack (Vampire Attack). The proposed approach uses the packet monitoring technique to detect malicious packet in the network. Proposed approach considers different network scenarios when using simulation. The basic principle behind the approach is that nodes check the received route request by comparing the packet header’s information (broadcast id and destination address) during route discovery phase and discard the malicious packets. A comparative performance study is performed in requisites of packet delivery ratio, throughput, routing overhead and energy consumption. It is found that Network performance improves as compared to the existing approaches.
Wireless mobile ad-hoc network is a set of many nodes or terminal by means of wireless communication and network capability that communicate with each other with decentralized administrator. These networks are basically a kind of wireless communication networks with mobility. Therefore, in such network major issues are found that is security and performance. A variety of routing algorithm exists and every routing strategy is efficient in one way or another depends upon the range of the network. The prime objective of routing protocol in wireless network is to produce a path between sender and receiver by means of minimum number of route request packets and more bandwidth available to use. Proposed work investigates the wireless ad-hoc networks for their security and performance issues.
Due to observation these issues are basically dependent on the routing strategy by which the network nodes find routes for deliver the data. Most of the attackers take advantage of routing techniques because these techniques are easily able to deploy the attacks in such kind of networks. Several routing based attacks exist. More work is required for the vampire attacks in wireless ad-hoc networks. Proposed work focus on security therefore, different kinds of security issues are investigated.
Eugene Y. Vasserman et al  discovered that every studied protocol are vulnerable to vampire attacks that are complex to discover and simple to introduce with the help of one malicious node transferring protocol-compliant messages. At its worst case, only single attacker is able to enlarge extensive battery power consumption by a factor of O (N), where N is number of nodes in network. Author discusses solution to moderate all vampire attacks that include a fresh proof-of-concept which provably limits the harm caused by attacker in duration of the packet forwarding phase.
P. Rajipriyadharshini et al  described a solution for vampire attack and described as wireless sensor network is a communication network across the sensor nodes. Sensor nodes collect information about use a physical environment. Now-a-days one main issue in wireless ad-hoc network is wastage of energy at each sensor device. New protocol called PLGP, a valuable and secure protocol is proposed along with the key management protocol called Elliptic Diffie-Hellman Key exchange protocol to avoid vampire attack.
The detailed methodology is described for implementing the proposed approach for detecting vampire attack. Basically vampire attack is a variant of DDOS attack, which performs resource consumption on neighbor nodes. Therefore, targeted packets are modified for preparing long routes or misguiding the packets during the vampire attack. The malicious nodes are making frequent connectivity from the entire neighbor nodes in network using false control message exchange. Due to this neighbor nodes reply to false request for connectivity and draining energy rapidly.
Therefore, in order to identify the malicious packets in network a new kind of scheme is required which monitor the network nodes’ activity and provide the decision for malicious packet. The malicious node just changes the received packet’s information during vampire attack. For simulation purpose when a malicious host receives route request packets then it changes the destination address to an unreachable or unknown host IP address. This result all packets are continuous flooded in the network. Once the false packets are flooded by the hosts it can increases the network bandwidth consumption.
Fig 1 shows steps in vampire attack detection. Number of nodes and route request with broadcast id and destination address are given. Node 1 is a source node, node 8 is a destination node and node 9 is a malicious node that modifies the received packet’s information. Node 1 initiates route discovery process and send RREQ packet to their neighbor nodes with broadcast id 2 and destination address 9. This RREQ packet processed by their neighbor nodes. When node 9 receives that RREQ packet then modify the destination address and append the address of unknown host. Modified packet continuously flooded in the network. In order to overcome the effect of malicious packets, compare all received RREQ in every node. For comparison, extract broadcast id and destination address oh all RREQ packets and compare them. If broadcast id and destination address are same then forward the packet otherwise discard the packet.
This section describes algorithm of proposed approach. The nodes can check intermediate host and can discard the malicious packet during route discovery phase. Therefore, proposed work performs check on the received packets information before forwarding to other host. Broadcast id of received packet along with the destination address of received packet is checked in this algorithm
Step1: Initialize with Number of Received RREQ Packets
Step2: IF (Received_RREQ_Packet ==1) THEN
Forward the RREQ packets
ELSE IF (Received_RREQ_Packet ==2) THEN
Ignore RREQ and wait for new one
ELSE IF (Received_RREQ_Packet < RREQ limit)
REPEAT i =1 to Received_RREQR_Packet -1
Extract bid [i] , dadd [i]
IF (bid [i] == bid [i+1] && dadd [i] == dadd
Step3: IF (Flag ==1) THEN
Forward the RREQ packet
DISPLAY (“Malicious RREQ Packet”)
The key objective of the proposed work is to discover an optimum solution for vampire attack in wireless ad-hoc networks. Therefore, an approach is developed for securing the network. The experimentation and experiment outcomes give essential facts for proposed approach. Comparative performance study is performed with respect to the existing approach in order to justify the proposed approach’s effectiveness. It is concluded that performance of the proposed approach is adaptable due to high bandwidth availability, low energy consumption, higher packet delivery ratio and less routing overhead. Proposed approach is an efficient and effective approach and able to detect the malicious packet in the wireless network. But the performance of proposed approach is decreases as the number of nodes increases frequently. But for the small network and small number of nodes the performance of network is much adaptable. Therefore, in near future the proposed approach is improved for supporting more number of efficiently.
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