Wireless Sensor Networks ( Wsns )

The concepts of wireless network security consist of commitment of cyber security and maintaining security based on the latest development and exploits against the network K.W. Ross, J. K. (2012). Wireless Network Security is based on the principles of cryptography, message integrity, authentication, securing e-mails, securing TCP connections: SSL, securing Network layer: IPsec, securing wirelsess: LANs, securing the operational security structure, such as the firewalls and the IDS K.W. Ross, J. K. (2012). This security

1. Abstract: Wireless sensor networks is growing rapidly over the few decades. Due to its flexibility, wireless sensor networks has been in practice in many areas. Among various wireless networks, Mobile Ad hoc networks has been one of the unique network. Unlike other network architectures, MANETs have no central architecture; every node is free to work both as a transmitter and receiver. Every single node can communicate freely with every other node which is in their communication range. Otherwise, it depends on neighboring nodes to relay messages. Due to this nature, MANETs are used in many missionary applications like health care, military use and emergency recovery. However the wide distribution of MANETs makes it vulnerable to malicious attacks. Hence it is necessary to design a secure system for MANETs. In this paper we implement a secure system named Enhanced Adaptive Acknowledgement especially for MANETs. To ensure higher security and reduce the network overhead, we use a different approach called hybrid cryptography in our proposed scheme. Enhanced Adaptive Acknowledgment detects higher malicious attackers without greatly disturbing the network performances. We compare the differences within the Enhanced Adaptive Acknowledgment before and after introducing the Hybrid cryptography approach

Abstract— Wireless Sensor Networks (WSN) introduce a new way to interact with the physical environment. The security in WSNs became an attractive area of research. WSNs are susceptible to a wide range of malicious attacks. At present ECC is considered for secure communications, which is having good potential for WSN security due to its smaller key size and its high strength of security. Unfortunately, the execution time of ECC is more which is not suitable for more number of applications. A number of other security mechanisms have been proposed for sensor networks to provide data confidentiality, namely Advanced Encryption Standard (AES) and Data Encryption Standard (DES). In this paper, we propose an algorithm, which is compared and analyzed with the existing ECC and AES to provide better security with authenticated sensor nodes. The authentication is done with a secret code. The proposed algorithm will ensure the secure communication with authenticated devices. The analysis results shows that the scheme works better than the common existent schemes with better utilization of available memory.

Wireless technology has become the wave of the future. From cellular phones to wireless point of sale devices, wireless networks and technology is all around us. In order to jump on the wireless train, one must first understand the different standards. To properly and safely utilize wireless technology the user also must understand the various types of wireless security. Once grasping these technologies and standards, anyone can implement a wireless network in their home.

Wireless networks should be protected to safeguard sensitive information. Several practices can be implemented to protect wireless networks.

There are many popular authentication protocol schemes and some of them are as follows. Lightweight Dynamic User Authentication Scheme – In Wireless Sensor Networks the authorized users can access and communicate with the sensor nodes. This scheme comprises of registration, login and authentication phases. Based on the predefined period the user registers and gets access to secure data and restarts if period expires. It states it is secure only against replay and forgery attacks. And provides many benefits like efficiency, avoiding leakage of password, etc. Lightweight Trust Model – Usage of this scheme benefits in reducing the memory consumption and energy. And it is done by three steps such as computing bytes, not storing the value in the transaction table, consuming 3 bits of memory and also avoids promiscuous operation mode. Lightweight Authentication Scheme – This requires HMAC and encryption algorithms and decrease the effects of resource consumption attack. It consists of three phases such as key predistribution phase, network initialization phase and authentication protocol. Secured Energy Conserving Slot-Based Topology Maintenance Protocol uses a symmetric key-based authentication mechanism for a sleep/wake-up schedule of nodes for better energy efficiency and increase in lifetime the network. Lightweight Key Management Scheme – This reduces the resource consumption and acts as building block for all mechanisms. It requires less key storage with minimal number of

It is essential to provide secure environment while routing data in Wireless Sensor Network. IP version 6 provides necessary security. The length of the address is big and the header format is completely changed. Further, IPSec is part of the protocol suite. A Quality of Service feature can be implemented using the Flow Label field of the IPv6 header. This feature is used to provide priority levels to the data packets. Stateless Address Auto Configuration is a feature that helps version 6 addresses to get configured automatically when the hosts are connected to IP version 6 networks.

Natural disasters have become very critical due to several reasons like global warming. Wireless sensor networks are used for detecting the natural events by measuring the temperature, air pressure, vibration, etc. and generate alarms. WSNs can measure the agitation of buildings, CO2 levels, and weather monitoring, etc. (Yawut & Kilaso, 2011).

Machine learning inspires many practical solutions that maximize many resource utilization and prolong the lifespan of a network. As wireless sensors network (WSNs) monitor dynamic environment that rapidly changes over time such behavior is either caused by the external factor or by initiated by the system designers. A comparative guide is provided to aid WSN designers to develop suitable machine learning solutions for appropriate application challenges. The security properties of sensors must be known before deploying the intelligent systems on critical infrastructure. This paper provides some steps for generating a comprehensive security model for sensors network as sensors network is not a traditional computing device hence existing security models are not applicable.

The B-MAC is proposed to meet these goals, a configurable MAC protocol for WSNs. It is simple in both for implementation and design. MAC protocol support a wide variety of sensor network workloads by factoring out some functionality and exposing control to higher services. In contrast to the classic monolithic MAC protocol this minimalist model of MAC protocol is designed [1].

Keywords— ID-based digital signature, secure data transmission protocol, Cluster-based WSNs, Fuzzy Approach, Minimum Energy Consumption

Wireless Sensor Networks (WSN) consists of a collection of nodes which are deployed randomly in a hostile environment. It has a fixed infrastructure and self-organized in to an arbitrary topology. Though there are advancements in technology, security in WSN is a principal concern. As the deployed sensors are in an open environment, the intrusion of attacks is very much higher. Also the WSN has broadcast nature of communication; they are easily affected by the attacks. Commonly prevailing attacks are Denial of Service (DoS) attacks, spoofing attack, selective forwarding attack, sinkhole attack, sybil attack, wormhole attack, black hole attack, grayhole attack, HELLO flood attack, etc. However we observe that Denial of Service attack is a

Wireless sensor network consist of a large number of sensor node with limited resource of energy, transmission power, network power, network bandwidth, and computation power. Each sensor node is able to perform some processing and sensing task independently. Each sensor node is able to communicate with each others to forward the sensing information. Sensor network can be consist of three subsystem namely sensor

Wireless Sensor Network (WSN) consists of a large number of low cost sensor nodes depolyed in parking area. These sensor nodes form a multi-hop ad-hoc network by wireless commnunication.

This report deals with the Security of Wireless Sensor Networks and how and why we need to secure them from any outsiders or attacks.