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 th...

Due to the unique characteristic of Mobile Ad hoc Network (MANET) and lack of security in its routing protocol, MANET is vulnerable to various attacks such as Black hole. In this paper we study a Black hole attack on one of ad hoc routing protocol called AODV (Ad hoc On Demand Vector). There have been many works done to solve this problem but most of them introduced extra overheads. In this pap...

MANET (Mobile Ad hoc Network) is a collection of nodes interconnected without a fixed infrastructure. For this reason the mobile nodes are resource constraint in terms of energy, storage capacity and processing power. To improve network throughput in MANET routing protocols such as AODV (Ad hoc OnDemand Distance Vector) is proved to be suitable. This is because the AODV protocol is an on-demand...

Mobile Ad hoc Network (MANET) is a wireless network which has dynamic nature with infrastructure less without a central administration. In MANETs link failure occurs due to topological changes of mobile node which causes high data loss and delay, so the performance is enhanced by predicting the link break in prior. The most challenging fact in the routing process is affording the energy profici...

1 Enhancing security features & performance of AODV protocol under attack for MANET In this paper, a novel security mechanism is presented to enhance security & performance of AODV (Adhoc On-demand Distance Vector) routing protocol under the attack for MANET (Mobile Ad-hoc Networks). The AODV routing protocol was initially developed without considering security in mind. So it is not able to def...

Bluetooth is one of the most widespread technologies for personal area networks that allow portable devices to form multi-hop Bluetooth ad hoc networks, so called scatternets. Routing is one of the challenges in scatternets because of its impact on the performance of the network. It should focus on reducing the power consumption in the network because most of the nodes are battery-operated port...

For most existing routing protocols of mobile ad hoc network (MANET), more efficient security mechanisms against the attacks from malicious, compromised and selfish nodes are highly demanded. This paper proposes a series of security mechanisms for the Ad-hoc On-demand Distance Vector (AODV) Routing protocol. Three techniques, including digital signature, one-way hash function and double one-way...

Mobile ad-hoc networks (MANET) consists several mobile nodes that communicate to each other without any centralized control. In such network where there is no infrastructure, mobility of nodes is a major concern. In MANET nothing is fixed, topology is dynamic so it can be changed. Hence in such network timely response for time critical task is a major challenge. In this paper our proposed work ...

Mobile Ad hoc networks(MANET) are characterized by multihop wireless connectivity, infrastructure less environment and frequently changing topology. The nodes acts as router and communicate to each other. This paper aims to provide a means of understanding the issues and protocol(OSPF,DSR,AODV,TORA.OLSR.DSDV) of MANET and investigating behavior of DSR,AODV,TORA protocol using metrics Throughput...