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Abstract of wireless sensor network
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Introduction With the increasing popularity of mobile devices and recent developments in wireless communication, wireless sensor networks are one of the upcoming fields of interest from research perspective. Sensor networks consists of ‘smart nodes’ which are resource constrained in terms of memory, energy, computation power. These nodes communicate wirelessly and pass their information to the main node usually called as sink node or base station. these sensor nodes comprised of their own sensors ,processor, radio transceiver, energy resource usually a battery providing them the ability of sensing, processing and communication capability. The first implementation of the wireless sensor networks was by military applications but nowadays these networks are used in environmental applications, medical applications, home appliances and various other commercial and consumer applications. In wireless sensor networks the sensor nodes are deployed densely which work collaboratively to monitor the specific task and then communicating with each other or with a base station. The topology of sensor networks may range from simple flat model to multihop clustering model. These networks have low memory, low bandwidth, low power and large scale node and the various other factors influencing the design of sensor networks are: fault tolerance, scalability, production costs, operating environment, hardware constraints etc. Therefore, the design of these networks must encounter all these factors. However, due to wireless nature of these networks and no tamper-resistant hardware makes it vulnerable to various types of attacks and these attacks are possible almost every layer of the OSI layer. As these networks are physically weak networks it is ve... ... middle of paper ... ...or the network traffic on the communication channels without the knowledge of sending and receiving party. As in the wireless sensor networks wireless signals are broadcasted which are accessible to the public and attacker can easily plug himself between the ranges of communication channel. 3: Jamming: These types of attacks are performed by deploying large number of nodes which can cause intense noise in the network and occupying the network channels making the transmission media unavailable for the other nodes. These types of attacks rarely occur because these jamming devices are easily detectable as sensor nodes sense the noise which is much larger than the usual noise in the network. MAC layer: At this layer the attacker tries to disrupt the various coordination rules and produces the harmful traffic. They also tries to spoof the identities at MAC layer.
Wireless networks – While the term wireless network may technically be used to refer to any type of network that is wireless, the term is most commonly used to refer to a telecommunications network whose interconnection between nodes is implemented without the use of wires, such as a computer network. Wireless telecommunication networks are generally implemented with some type of remote information transmission system that uses electromagnetic waves, such as radio waves, for the carrier and this implementation usually takes place at the physical level or “layer” network.
A replay attack is a form of network attack in which a valid data transmission is
The rapid progress of embedded MEMS (micro-sensing technologies) and wireless communication has made wireless sensor networks possible. Such an environment may have many wireless nodes which are inexpensive; each node is capable of collecting, storing and processing environmental data, and communicating with neighboring nodes. These sensors are connected with wires in the past but tod...
Terrorism is a growing threat in modern times. Ultimately all activities need co-ordination and such co-ordination is facilitated by communication. Terrorist activities need communication as well as any other activity. In order to avoid getting traced, such communication can be done over secure lines on open public networks or hacked private networks.
There are numerous network security devices and tools available to aid in computer network defense, and these tools are often relied upon for protecting against increasingly sophisticated, stealthy, and damaging attacks. When acting alone, the current generation of security devices has an exceedingly difficult time providing an effective defense against such threats, and the situation is particularly grim for targeted or novel attacks.
Networks are designed in a number of ways, based on the geographical area, the technology used, user group specific, application based etc. But we can roughly categorize the communication networks in 2 broad categories, based on transmission: Connection-Oriented and Connectionless.
The widespread application of The Internet of Things (IOT) can not only change the extensive management mode in agriculture, but also develop the strength in epidemic control for animals and plants to ensure the safety of the agricultural products quality. So it’s of great significance to intensify research efforts on the application of IOT in agriculture and forestry. In recent years, IOT has been applied in some agriculture and forestry fields. Now we’ll give a basic overview of it.
A network is merely a series of interrelated components, sharing information, linked by one common lifeline, spanning across a large area. When most people think of networks in the computer sense, cyberspace and the internet are usually types of networks that come to mind. However, these are just small pieces that complete the network puzzle. Many other types of networks include Local Area Networks (LANs), Wide Area Networks (WANs), and also wireless networks as well. This paper will provide some insight into the development, objectives, and impact of various network systems.
The IOT creates an opportunity to measure or monitor a large number of different end systems by collecting and analyzing the data. The perception layer includes a group of Internet-enabled devices that are able to perceive, detect objects, gather information, and exchange information with other devices through the Internet communication networks. Radio Frequency Identification Devices (RFID), cameras, sensors, Global Positioning Systems (GPS) are some examples of perception layer devices. Forwarding data from the perception layer to the application layer under the constraints of devices’ capabilities, network limitations and the applications’ constraints is the task of the network layer.
The world has gone through a lot of changed as time passes by. With advancements in the technological field people are can communicate with ones from around the world without having to even lift a finger. To make things more efficient and more cost saving industries have made technology wireless. Wireless technology gives people the chance to get up from their stationary computer, or cord phone and able to freely move without restrictions. The IT, or Information Technology has become a standard and very critical part of today’s society. Wireless technology came from the basic just cellular usage to sensors in the medical field. Wires are now a thing of the past in today’s world with forever revitalizing technology.
Without proper protection, any part of any network can be susceptible to attacks or unauthorized activity. Routers, switches, and hosts can all be violated by professional hackers, company competitors. In fact, according to several studies, more than half of all network attacks are waged internally. To determine the best ways to protect against attacks, we should understand the many types of attacks that can be instigated and the damage that these attacks can cause to data. The most common types of attacks include Denial of Service (DoS), password, an...
De Poorter, E., Troubleyn, E., Moerman, I., & Demeester, P. (2011). IDRA: A flexible system architecture for next generation wireless sensor networks. Wireless Networks, 17(6), 1423-1440. doi:http://dx.doi.org/10.1007/s11276-011-0356-5
Introduction: This is a 21th century, technology is the most important and improved thing of the human life. It makes life easier and faster. Development of faster sophisticated technology we have better and fast life. So all we are connect each other by computer network. There are two different way of network: Wired and wireless. Now day we can found network almost everywhere. Home, business, public place, Airport, Planes, hospitals, school, train everywhere we can found networking. Therefore, almost every sector of the economy that has affected by wired and wireless technology. Wired network and wireless protect both has security, But in general wireless network is less secure than wired networks. For proper security AP (access point) and its antenna should be right position. Also add a wireless access point or use a wireless router we can connect to network wirelessly. AS we using more and more of devices (smart phones, tablet and computers) rely on wireless networking, we have to improve our network security too.
Have you ever asked yourself, what the world would be like if there weren’t any mobile applications. Society is impacted by the new development in technology daily. Someone is always claiming that their inventions will revolutionize the world, but no invention has had more success over the years, in the cellular world than mobile applications. People all around the world use millions to billions of applications daily for personal and business uses. For example, social networking which is use by all generations of people. It has an influence the way we purchase cell phones, in order to have the capability. With the creation of different smartphones and tablets, comes the demand for more mobile applications. This causes competition among application builders. Mobile applications are designed to its user making their experience less complicated. Mobile applications have their advantages and disadvantages, depending on its design and designer. They can be created to be very simple or complex, depending on its intended function. Has society benefited from the usages of mobile applications or is it just a distraction. What impact do mobile applications have on society.
The downside of this technology is the potential for security problems. Intruders can see packets traveling on a network and can perhaps interpret them to obtain confidential information.