Upendra Singh

Detecting and avoiding of worm hole attack and collaborative blackhole attack on MANET using trusted AODV routing algorithm

A mobile ad-hoc network is a wireless network such that nodes are move dynamically in network. In OSI network layer there is lot of attack but introduce only collaborative black hole and worm hole attack. A group of black hole node easily employed against routing in mobile ad-hock networks called collaborative black hole attack. When two malicious node is create a tunnel is called worm hole attack. This paper instigate to detect and avoided of worm hole attack and collaborative black hole attack using trusted AODV routing algorithm.

Secure data transmission on MANET by hybrid cryptography technique

Mobile Ad-hoc Network (MANET) is special types of mobile wireless network where the groups of mobile devices form a temporary network without any kind of an infrastructure. It is very usefully due to its self maintenance, self organizing and by reason of mobility of wireless communication. Two major issues are found in such kind of network performance and security. In mobile ad-hoc network there are so many attacks which reduced the performance of network. In this paper we have focus only active attacks in network layer. Ad Hoc On-Demand Vector Routing protocol is a reactive routing protocol for ad hoc networks that maintain routes only between nodes which want to communicate by using routing messages. AODV provide loop free routes during link breakages. SAODV is a secure routing protocol based on trust model for mobile ad-hoc network. For provide security and increase performance in MANET, we have applied SAODV protocol and our solution uses Hybrid Cryptography Technique (DES, RSA Algorithms) on SAODV. This paper presents comparison based on simulation of AODV, SAODV routing protocol of MANET with Different parameters like energy, packet delivery ratio and throughput. The proposed cryptographic routing algorithm is implemented through the NS2 network simulation environment. The outcome of our proposed method the energy is low; packet delivery ratio and throughput are high as compare to traditional method.

Detection and avoidance of unified attacks on MANET using trusted secure AODV routing protocol

Mobile ad-hoc network (MANET) is decentralized network, in this network nodes can move dynamically. OSI Network layer faces several attacks. Black hole attack work on highest sequence number during Replay message, a group of black hole nodes easily employed against routing in MANET called collaborative black hole attacks. When two malicious nodes cooperatively create a tunnel thereby formed worm hole attack. The proposed work focuses on trust based computing to mitigate the effects of black hole, wormhole and collaborative black hole attacks. Trust value is computed on the basis of route request, route reply and data packets. After calculation get trust values between 0 to 1. If trust value is greater than 0.5 then marks node is reliable and allow on a network otherwise block. Network performance of proposed protocol trusted secure AODV routing protocol (TSAODV) is evaluated. The result shows performance improvement as compared to standard AODV protocol.