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The nodes are connected by wireless channels and form a random topology. This paper focuses on a new Intrusion Detection System (IDS), Secure-Enhanced Adaptive 3 Acknowledgment (S-EA3ACK), using Enhanced Adaptive ACKnowledgment (EAACK) with hybrid cryptography specifically designed for Mobile Ad Hoc Networks (MANET). In addition, all the aforementioned protocols are compared based on several important performance metrics such as Packet Delivery Ratio (PDR), end-to-end latency, and average power consumption across Network Simulator 2 (NS2), which are used to implement and test the proposed system. Different topology sizes and node sets were used, and the results were compared to those of some closely related IDS mechanisms. [ABSTRACT FROM AUTHOR]

Mobile Ad hoc Network (MANET) is the significant technology among various wireless communication technologies where all the nodes are mobile and which can be connected to dynamically used wireless link in a random manner. They connect or disconnect from the active network any time and transfer packets in a single or a multicast mode. Nodes are connected by way of wireless links and form a random topology. This research paper focuses on, performance comparison of a new Intrusion Detection Systems (IDS), Secure-Enhanced Adaptive 3 Acknowledgement with hybrid cryptography's EA3ACK-MARS4 and EA3ACK-ECC specially designed for MANET. Furthermore, all the above mentioned protocols are compared based on several important performance metrics which are Packet Delivery Ratio (PDR), end-toend delay and average energy via one of the efficient networking routing protocol called Network Simulator 2 (Ns2). It is used to implement and test the suggested system under various size of topology with different constant sets of nodes as well as comparing the results with two different protocols. [ABSTRACT FROM AUTHOR]

• EAACK has been presented to detection of forged acknowledgement. • P2P ACK, RSA method has been used in this to reduce the routing overhead. • Security level of data transmission has been increased using the RSA public key cryptography. • High level of packet delivery ratio. MANET – Mobile Adhoc Network is a self-configuring network that connected by the number of mobile nodes with wireless links and it has no fixed infrastructure. In this, each single node can operates as both a transmitter and receiver. It has been exploited in various applications such as disaster stuck areas, military, emergency revival etc. Nevertheless, the open intermediate and broad distribution of nodes in MANET can cause a vulnerable to different malicious attacks and MANET that can operate consistently even in the being there of inside packet drop attackers can be really challenging. Therefore, we need to develop Intrusion Detection System to detect the misbehavior nodes during the packet delivery with acknowledgement for the protection of MANET. In this paper, EAACK (Enhanced Adaptive Acknowledgment) is developed with Enhanced Interior Gateway Routing Protocol (EIGRP) hybrid protocol which consists of P2P ACK and RSA algorithm. At present, the network overhead is caused by the digital signature algorithm if more misbehavior nodes are presented on network. Hence, this proposed system is applied with EIGRP to reduce the network overhead caused by digital signatures in EAACK, and P2P (peer-peer) ACK and RSA (named after Ron Rivest, Adi Shamir and Len Adleman) provides more security to the network. S-ACK (Selective Acknowledgements) cannot differentiate the particular node is malicious node. Therefore, this proposed system introduces the P2P ACK to detect the misbehavior node efficiently. Here, RSA can encrypt the session key that creates the key more secure to improve the security level and P2P ACK use this encrypted key for the acknowledgement. In the P2P ACK, keys are generated by the RSA and distributed for signing and verifying the acknowledgement packets in advance. This proposed P2P ACK is used to enhance the detection of misbehavior nodes. The performance of this proposed method can improve the security level and reduce the routing overhead through the secured acknowledgement. [ABSTRACT FROM AUTHOR]

Mobile Ad-hoc network (MANET) is a decentralized type of wireless network. Due to its low cost of installation and easy maintenance, it is always self-configuring, infrastructure-less network of mobile devices associated with wirelessly. Every device in a MANET is free to move separately in any direction, and will therefore change its associations with the other devices regularly. Mobile ad-hoc network is similar kind of network where the device working as both sender and receiver. In this network, the device to device communication is usually has a routable networking environment on top of a Link Layer. Therefore, an intermediate host always becomes a part of communication. If the intermediate host is not trusted, then it can be modifying the messages transmitted to towards the destination host. A mechanism is necessary to improve the present communication technique in mobile ad-hoc network. So, we have used the cryptography technique. Then, the security in ad-hoc networks is investigate. The investigation leads to find a solution for wormhole attack. In this attacker, a group of attacker is deployed in the network and troubles the privacy and security of the network. Therefore, a solution with the cryptographic technique to prevent the information forward to the destination is proposed. The second contribution of the work is to prepare a technique by which the wormhole nodes are prevented in the network. The implementation of the proposed work is performed on the NS2 network simulator and the generated trace files are used for performance evaluation of the work. The performance of the proposed routing protocol evaluates the in conditions of end to end delay, throughput, packet delivery ratio, and packet drop ratio and also validate the solution for the proposed routing protocols performance is compared with the established EAACK and the AODV routing protocol. According to the experimental results, the performance of the proposed routing protocol is found optimum and adaptable for both security and performance issues in the network. [ABSTRACT FROM AUTHOR]

MANETs are Vulnerable to malicious attackers because of their open medium and wide distribution of malicious attackers. Intrusion Detection System detects and reports the malicious activity in ad hoc networks. IDSs usually act as the second layer in MANETs. A detection system called Enhanced Adaptive Acknowledgement (EAACK) specially designed for MANETs. By the accepting MRA scheme, EAACK is capable of finding malicious nodes contempt the existence of the false misbehavior report and against other popular mechanisms in different scenario through simulation. Malicious attackers to falsely report nodes as malicious can produce the false misbehavior report. EAACK is an acknowledgment-based encroachment detection system. When measured over 40% malicious nodes the routing overhead for EAACK (DSA) is 0.58% and Packet delivery ratio is 0.92% for the same. This attack can be deadly to the entire network when the attackers break down sufficient nodes and thus cause a network division. Hybrid Enhanced Adaptive Acknowledgement (HEAACK) which is proposed system adds cryptography mechanism such as RSA and Triple DES giving a secure network and thus the rate of data manipulation and network overhead decreases. [ABSTRACT FROM AUTHOR]

The migration to wireless network from wired network has been a global trends in the past few decades. The mobility and scalability brought by wireless network made it possible in many applications. Among all the contemporary wireless networks, Mobile Ad hoc NETwork (MANET) is one of the most important and unique applications. On the contrary to traditional network architecture, MANET does not require a fixed network infrastructure; every single node works as both a transmitter and a receiver. In general, routing protocols for MANETs are designed based on the assumption that all participating nodes are fully cooperative. Nodes communicate directly with each other when they are both within the same communication range. Otherwise, they rely on their neighbors to relay messages. One such routing misbehavior is that some selfish nodes will participate in the route discovery and maintenance processes but refuse to forward data packets. In this paper, we propose the 2ACK scheme and a new intrusion-detection system named Enhanced Adaptive ACKnowledgment (EAACK) specially designed for MANETs that serves as an add-on technique for routing schemes to detect routing misbehavior and to mitigate their adverse effect. The main idea of the 2ACK scheme is to send two-hop acknowledgment packets in the opposite direction along with the EAACK demonstrates higher malicious behavior detection rates in certain circumstances while does not greatly affect the network performances of the routing path. In order to reduce additional routing overhead, only a fraction of the received data packets are acknowledged in the 2ACK scheme. Analytical and simulation results are presented to evaluate the performance of the proposed scheme. [ABSTRACT FROM AUTHOR]

Mobile ad hoc network (MANET) is a collection of autonomous mobile nodes with infrastructure less network. In MANET, the mobile nodes are equipped with both wireless transmitter and receiver that communicate via bi-directional wireless links. Moreover, the mobile nodes are self configuring and self organizing in nature, these unique characteristics made MANET ideal to be deployed in a remote or mission critical area like military use or remote exploration. However, the open medium, wide distribution of nodes and changing topology and lack of centralizing monitoring in MANET leave it vulnerable to various means of attacks. It is difficult to develop suitable intrusion detection scheme to protect MANET from malicious attackers. In this paper, we introduce an improved version of EAACK called EAACK2 that helps in detecting forged acknowledgement and performs well in the presence of false misbehavior and partial dropping. [ABSTRACT FROM AUTHOR]