Introduction:
Today every wireless device uses frequency based transmissions without using any physical or wired connections. Wireless system mostly consist of the normally used LAN and WAN networks, Personal networks, Wireless computers, smart phones, Tablets. It also consists of devices which have infrared and Bluetooth integrated in them such as wireless mouse and wireless keyboards. With the introduction of these technologies that are operated wirelessly requires a certain level of security as well. Thus these devices are to a level bit vulnerable to many conventional as well as other severe attacks. So wireless security is necessary to prevent all sorts of attacks. Basically Wireless Security is the prevention or restriction of
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But still there were many flaws that intruders used to take advantage and used the flaws for their own advantage thus making WPA also vulnerable. WPA2 was introduced to overcome the flaws that WPA had in it. WPA2 uses AES (Advanced Encryption Standard) algorithm to provide security thus making it very difficult for intruders to break the security of this layer. As the algorithm encrypts secret and confidential data and it’s very difficult for the intruders to decrypt it. The issue with WPA2 security is that as it has complex encryption thus it requires a lot of processing power so the old systems which do not have the capability to process a lot of computation thus WPA2 is not suitable for the old deployed systems.
• Wired Equivalent Privacy: This is an older security method supported by older devices but it’s no longer used as in it encrypted security key is sent from one computer to another via the network thus making it very easy for the attackers/intruders to attack and hack the key thus very obsolete network security methodology.
Mac and mac spoofing: MAC(Media Access Control) is a terminology normally associated with Wi-Fi based technologies. Basically
One of the very good utilities of the hospitals network is the availability of the wireless access on the ward level, this will insure instant connectivity to the hospitals network from the small mobile devices such as laptops or other Wi-Fi based medical devices such as the new cardiograph devices which shares data with the database servers through wireless connection. These wireless devices depending on the diagram specifications are in 5 gigahertz frequency which are not compatible with every laptop computer, a recommendation to replace them with 2.4 gigahertz frequency devices are more efficient in order to allow laptops to access the network. A special attention is needed in the security of these wireless access points by connecting them to a server like RAS server to authenticate the personnel accessing the network wirelessly before allowing the devices to use the network. This is very important practice to prevent a destructive intrusion into the network.
Privacy: In a wireless network all the devices are able to hear data traffic within their ranges which can be a threat to the security of the link. IEEE 802.11 counters this problem by offering a privacy service option that raises the security level of the 802.11 network to that of a wired network.
During this presentation we learned of the network types that Whitewater uses and how they differ. For example they have three different networks which separate devices that are allowed to access the network. Their network gives each device a certificate that is good for 2 years. They also recently implemented a check in for devices accessing the network so that they can verify whether or not the user has an anti-virus installed.
Zhu, J., & Ma, J. (2004). A new authentication scheme with anonymity for wireless environments. Co
Wireless security in 802.11 is less robust and has many security flaws that can be exploited by an attacker. Security best practice for wireless networks depends on a defense in depth strategy, with five control layers:
Interference: When two devices try to access the same WAP and their signals “collide” and cancel each other out. None of the devices manages to fully connect because of it.
To improve security, the Wi-Fi uses various built-in WEP encryption technologies to prevent attacks from
Outline a wireless network and technology that you use regularly. The WLANs which are derived from the IEEE 802.11 standards, and marketed under the Wi-Fi trademark name. The WLANs security is neither forthright/candid nor simple, and it is continuously varying. Even though, as WLAN increase client output, they also expose the networks to a new group of potential hackers. With the present inherent security weakness of the 802.11 standard, all companies, small, medium or large, need to find out their security conditions derived from the applications using the WLAN. The standards also provide requirements for high-speed networks that support most modern-day applications. What sorts of security issues do
Wireless attacks have becoming a more common security issue when it comes to networks. Attacks can get a lot of information that is being sent across a network and use to commit crimes in other networks. Every wireless network is vulnerable to attacks and it is the important that all the necessary security measures are taken so as to prevent the mess these attacks can cause. These attacks are normally carried out to target information that is being shared through the networks. It is therefore very important to know of such attacks so you will be able to identify the attack when it happens.
WAP came in shortly behind WEP with secure networking communication in mind. It’s a later discovered that WEP doesn’t protect much at all and was then replaced with WPA/WPA2. WPA/WPA2 is the most widely used today. In fact, the only time WEP should be used is when there needs to be communication with old devices that don’t support encryption. WEP, or Wired Equivalent Privacy, is not hard encryption to crack. WAP, or Wireless Application Protocol, uses a smaller revision of HTML called Wireless Markup Language (WML), and is used is wireless devices. WPA/WPA2 is now known as the most secure communication over the internet today. WTLS, Wireless Transport Layer Security, provides authentication, encryption, and data integrity for wireless devices (Dulaney,
WEP is an older security protocol for wireless networks that encrypts transmitted data. WEP uses a security code chosen during configuration called a WEP key, which uses a sequence of hexadecimal digits. WEP keys can be formed in different lengths depending on the type of WEP encryption being utilized. However it is generally not recommended to use WEP especially when we’re talking about networks that need more advanced security. The biggest disadvantage found with WEP is really it’s main weakness, a skilled hacker could actually crack the security key within a matter of minutes using special software.
Wi-Fi Protected Access 2, the follow on security method to WPA for wireless networks that provides stronger data protection and network access control. It provides enterprise and consumer Wi-Fi users with a high level of assurance that only authorized users can access their wireless networks. Based on the IEEE 802.11i standard, WPA2 provides government grade security by implementing the National Institute of Standards and Technology (NIST) FIPS 140-2 compliant AES encryption algorithm and 802.1x-based authentication.
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
A wireless network is any type of computer network that uses wireless data connections for connecting network nodes .Wireless networking is a method by which homes, telecommunications networks and enterprise (business).Installations avoid the costly process of introducing cables into a building, or as a connection between various equipment locations. Wireless telecommunications networks are generally implemented and administered using radio communication. This implementation takes place at the physical level (layer) of the OSI model network structure.
Physical Intrusion detection Using Wi-Fi orZigBee RF SignalsRonak Gune#1#Department of Computer Engineering, RMD Sinhgad School of Engineering 1ronakgune @gmail.comAbstract- Wi-Fi is the wireless networking technology which allows two or more users to connect to each other or connect to the internet within a particular area. Wi-Fi thus enables a number of devices to communicate with each other using Radio Frequency signal which helps to use a lot of advanced services to be provided to the user. In the proposed system RF signals form Wi-Fi and ZigBee sensor nodes were used and the received signal strength indicators (RSSI) were used as a test to detect the presence of human beings in an indoor environment. This system can be used as an actual alarm for detection of physical intrusion in a certain area and also can be used to save energy and reduce costs on a large scale.Keywords: Alarm; Physical Intrusion Detection; SOHO; ZigBee; Wi-Fi.IntroductionIntrusion detection in a certain given environment is one of the most important topics that we have to consider nowadays because of security issues and also for energy management.The traditional security approaches include setting up lasers, cameras or even people for security measures. However, this may lead to wastage of resources like money, storage and power. Thus we need to come up with measures which use some different methods other than those available for better security purposes or energy management.Wireless sensor networks