A Lightweight and Attack Resistant Authenticated Routing Protocol for Mobile Adhoc Networks

In mobile ad hoc networks, by attacking the corresponding routing protocol, an attacker can easily disturb the operations of the network. For ad hoc networks, till now many secured routing protocols have been proposed which contains some disadvantages. Therefore security in ad hoc networks is a controversial area till now. In this paper, we proposed a Lightweight and Attack Resistant Authenticated Routing Protocol (LARARP) for mobile ad hoc networks. For the route discovery attacks in MANET routing protocols, our protocol gives an effective security. It supports the node to drop the invalid packets earlier by detecting the malicious nodes quickly by verifying the digital signatures of all the intermediate nodes. It punishes the misbehaving nodes by decrementing a credit counter and rewards the well behaving nodes by incrementing the credit counter. Thus it prevents uncompromised nodes from attacking the routes with malicious or compromised nodes. It is also used to prevent the denial-of-service (DoS) attacks. The efficiency and effectiveness of LARARP are verified through the detailed simulation studies.Comment: 14 Pages, IJWM

Achieving MANETs Security by Exchanging Path Oriented Keys and Priority Based Secured Route Discovery

In this work, two scenarios are considered, scenario-1 is key based communication and scenario-2 is priority based routing and communication. In scenario-1, MANET works on generated keys called KEY1 and KEY2 to establish communication between nodes. Here source node will have to generate and store a key called KEY2 and destination node will have to generate and store a key called KEY1. When source node initiates communication with destination-node, source node will send a request-packet to destination via shortest/less- cost path (PATH1) without any key mentioning in the packet. Now destination node will send the requested packet and KEY1 to source node via different path other than PATH1 (path of received packet). Source will send KEY2 to destination again through the same path (PATH2). In scenario-2, communication of each node is based on the neighbour node's priority, here, priority-1 being the highest, hence it is highly recommended for communication and priority three is being the lowest and it is rarely recommended for the communication. Nodes in the network classified into 3 types, unknown node, neighbor's known node, non-neighbors known node. Priority of nodes can be evaluated based on the security measures, energy level and other parameters of the node. It can also consider Trust Value (TV) of each node based on the duration spent in active efficient communication. With help of this strategy, we can achieve highly secured route discovery, which will help network to have smooth communication among its node

A Candour-based Trust and Reputation Management System for Mobile Ad Hoc Networks

The decentralized administrative controlled-nature of mobile ad hoc networks (MANETs) presents security vulnerabilities which can lead to attacks such as malicious modification of packets. To enhance security in MANETs, Trust and Reputation Management systems (TRM) have been developed to serve as measures in mitigating threats arising from unusual behaviours of nodes. In this paper we propose a candour-based trust and reputation system which measures and models reputation and trust propagation in MANETs. In the proposed model Dirichlet Probability Distribution is employed in modelling the individual reputation of nodes and the trust of each node is computed based on the node’s actual network performance and the quality of the recommendations it gives about other nodes. Cooperative nodes in our model will be rewarded for expanding their energy in forwarding packets for other nodes or for disseminating genuine recommenda-tions. Uncooperative nodes are isolated and denied the available network resources. We employed the Ruffle algorithm which will ensure that cooperative nodes are allowed to activate sleep mode when their service is not required in forwarding packets for its neighbouring trustworthy nodes. The proposed TRM system enshrines fairness in its mode of operation as well as creating an enabling environment free from bias. It will also ensure a connected and capacity preserving network of trustworthy node

AODVSEC: A Novel Approach to Secure Ad Hoc on-Demand Distance Vector (AODV) Routing Protocol from Insider Attacks in MANETs

Mobile Ad hoc Network (MANET) is a collection of mobile nodes that can communicate with each other using multihop wireless links without requiring any fixed based-station infrastructure and centralized management. Each node in the network acts as both a host and a router. In such scenario, designing of an efficient, reliable and secure routing protocol has been a major challenging issue over the last many years. Numerous schemes have been proposed for secure routing protocols and most of the research work has so far focused on providing security for routing using cryptography. In this paper, we propose a novel approach to secure Ad hoc On-demand Distance Vector (AODV) routing protocol from the insider attacks launched through active forging of its Route Reply (RREP) control message. AODV routing protocol does not have any security provision that makes it less reliable in publicly open ad hoc network. To deal with the concerned security attacks, we have proposed AODV Security Extension (AODVSEC) which enhances the scope of AODV for the security provision. We have compared AODVSEC with AODV and Secure AODV (SAODV) in normal situation as well as in presence of the three concerned attacks viz. Resource Consumption (RC) attack, Route Disturb (RD) attack, Route Invasion (RI) attack and Blackhole (BH) attack. To evaluate the performances, we have considered Packet Delivery Fraction (PDF), Average End-to-End Delay (AED), Average Throughput (AT), Normalized Routing Load (NRL) and Average Jitter and Accumulated Average Processing Time.Comment: 20 Pages, 24 Figure

QUANTUM PHASE SHIFT FOR ENERGY CONSERVED SECURED DATA COMMUNICATION IN MANET

A Mobile Ad-Hoc Network(MANET) is a structure-less network where the mobile nodes randomly moved in any direction within the transmission range of the network. Due to this mobility, wide range of intrusion occurs in MANET. Therefore, Intrusion Detection Systems (IDS) are significant in MANETs to identify the malicious behavior. In order to improve the secured data communication an efficient Quantum Phase Shift Energy Conserved Data Security (QPSEC-DS) technique is introduced. The Quantum Phase Shift (QPS) technique is used for ensuring the security during the data transmission from sender to receiver in MANET. Initially, the quantum based approach is used to encrypt the information using QPS at the sender through secret key distribution. The receiver side also performs the same QPS, and then the encrypted bit is received successfully. This in turns attains the secured packet transmission without any malicious node in the MANET. Based on the phase shifting, the energy conservation between the sender and receiver is measured for transmitting the data packet using QPSEC-DS technique. Also, the enhanced Dynamic Source Routing (DSR) protocol is applied in QPSEC-DS technique is implemented to improve the energy management and secured data communication between the source and destination in an efficient manner. The QPSEC-DS technique conducts the simulations work on parameters including packet delivery ratio, energy consumption, communication overhead and end to end delay