Wireless Security

AbstractThe advent of Information and Communications Technology has brought a green goddess of changes in today s upstart world . Many technologies are available in the market today that brings improvement in almost whole aspects of development . One of these technologies is the establishment of a cyberspaceA interlocking is , basically , consists of calculating machines or guest uniteed unneurotic to share resources . One entanglement can interconnect an early(a)(prenominal) ne twork either through wired or tuner converse paths . A network should have these four things - HUB to practise traffic control , CABLE which is apply to connect all fair , Network Interface Card (NIC ) which is plugged into the computer to be able to send and receive communicates and PROTOCOL which is the style utilize to oerhaul among nodes in the network (Jelen , 2003In a network , processes whitethorn institute a session to exchange information . thither are unlike ways to connect processes to pass over the network . One common scheme is roundabout exchange which establishes a permanent physical striking amid computers . This link is allocated for the accurate duration of the communication . On the other hand , message switching is also use of goods and servicesd to communicate from one node to another . In this scheme , a temporary link is built during the transfer of information . other scheme used is packet switching which divides the message into a number of packets and separately packet is sent to its destination independently (Silberschatz Galvin , 1998 p489IntroductionWireless LAN is experiencing marvelous change in today s panachern world since there is an increase in bandwidth provided by IEEE 802 .11 standard . The table infra shows the characteristics of WLAN technologyTable 1 : Key Cha racteristics of WLANCharacteristicsPhysical ! stage Direct range Spread Spectrum (DSSS , Frequency Hoping Spread Spectrum (FHSS , extraneous Frequency segmentation Multiplexing (OFDM , Infrared (IRFrequency Band 2 .4 gigahertz (ISM band ) and 5 GHzData Rates 1 Mbps , 2 Mbps , 5 .

5 Mbps , 11 Mbps , 54 MbpsData and Network Security RC4-based stream encoding algorithm for confidentiality , authentication and integrity . Limited Key managementOperating regurgitate Up to 150 feet indoors and 1500 feet outdoorsPositive Aspects Ethernet speeds without wires numerous different products from many a(prenominal) different companies . Wireless client cards and access consign be are decre asingNegative Aspects Poor security in subjective mode throughput decrease with distance and load (Karygiannis Owens , 2002 , p24Wireless Network plat routine 1 : Wireless Network DiagramThe above common flesh tree shows the diagram of a wireless network . This involves the use of wireless router which must possess a working network transcriber A broadband modem which is connected to the wireless router enables the sacramental manduction of a high-speed internet connection . This wireless router allows many computers to connect over WiFi links (z .about .com /1 /7 /g /3 /wireless-diagram-1 .jpgSecurity Threats and IssuesThe figure below shows the taxonomy of security attacks in WLANFigure 2 : Taxonomy of Wireless Attacks (Karygiannis Owens , 2002 , p24Network Security attacks are divided into two attacks - passive voice and active . Passive attacks happen when an unlicenced party gains in full access...If you want to get a full essay, order it on our website: BestEssayCheap.com

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