Wireless Technology & SecurityWireless Local Area NetworksWi-Fi and 802.11Wireless & BusinessBy the dollarsKeys for Growth in Business802.11b & aSlide 8802.11gSlide 10Compatibility of 802.11gDisadvantages of 802.11gAdvantages of 802.11g802.11nDefinitionSlide 16The hope of implementing 802.11n is so that consumers may be able to use more of a range of products.Where can it be used if implemented?What is a hotspot?Current Status of 802.11nBenefits of 802.11nDisadvantages of 802.11nSlide 23Wireless SecurityProtecting Access and SignalControlling AccessControlling the signalOther ways to get securedConnecting to OSU_PUB DomainSlide 30Slide 31Questions?Wireless Technology & Wireless Technology & SecuritySecurityWireless Local Area NetworksWireless Local Area NetworksWhat is the IEEE?What is the IEEE?Institute of Electrical and Electronics Engineers Institute of Electrical and Electronics Engineers Not for profitNot for profitSets the standards for 802.11Sets the standards for 802.11What is 802.11?What is 802.11?Set of standards for WLANSet of standards for WLANProgressing with technologyProgressing with technologyChange is denoted with a letterChange is denoted with a letterhttp://www.ieee.org/web/aboutus/home/index.htmlWi-Fi and 802.11Wi-Fi and 802.11Wi-Fi (wireless fidelity)Wi-Fi (wireless fidelity)WLAN products that utilize 802.11 standardsWLAN products that utilize 802.11 standardsWi-Fi AllianceWi-Fi AllianceOversees tests of product certification Oversees tests of product certification Products certified Wi-Fi will work with all 802.11 Products certified Wi-Fi will work with all 802.11 standardsstandardshttp://searchmobilecomputing.techtarget.com/sDefinition/0,,sid40_gci838865,00.htmlWireless & BusinessWireless & BusinessBy 2007-2008By 2007-200865% of enterprises will have wireless 65% of enterprises will have wireless applications deployedapplications deployedWith mobile devices outnumbering With mobile devices outnumbering traditional PCstraditional PCs-Editors of Computer WorldBy the dollarsBy the dollarsTotal U.S. spending on wireless Total U.S. spending on wireless communications will grow by 9.3% this communications will grow by 9.3% this year, reaching $158.6 billion. It’s year, reaching $158.6 billion. It’s predicted to hit $212.5 billion by 2008, predicted to hit $212.5 billion by 2008, with a 10% compound annual growth with a 10% compound annual growth rate.rate.-Editors of Computer WorldKeys for Growth in BusinessKeys for Growth in BusinessImproved SecurityImproved SecuritySteve will address specificsSteve will address specificsIncreased Options involvingIncreased Options involvingSpeedSpeedRangeRangeFrequencyFrequency-Editors of Computer World802.11b & a802.11b & a802.11b & a802.11b & a““a” implemented in 1999a” implemented in 1999After 802.11b, 2.4GHz and 11 MbpsAfter 802.11b, 2.4GHz and 11 MbpsDifferences from 802.11bDifferences from 802.11bEnhanced data speed to 54 Mbps Enhanced data speed to 54 Mbps Operates in the 5 GHz bandOperates in the 5 GHz bandLess interferenceLess interferencehttp://www.computerworld.comhttp://www.siliconvalley.internet.com802.11g802.11gSpeed 54 MbpsSpeed 54 MbpsOperates in a 2.4 GHz ISM BandOperates in a 2.4 GHz ISM BandIs it better than a or b?Is it better than a or b?Yes and NoYes and Nohttp://siliconvalley.internet.com802.11g802.11gCompatibility of 802.11gCompatibility of 802.11g802.11b802.11ba,b, and ga,b, and gCombinationCombinationMore expensiveMore expensivehttp://www.computerworld.comDisadvantages of 802.11gDisadvantages of 802.11gRange can be reduced.Range can be reduced.Radio FrequencyRadio Frequency Only has 3 fully non-overlapping Only has 3 fully non-overlapping channels.channels.Others can handle up to 11Others can handle up to 11Before this standard was fully ratified, Before this standard was fully ratified, 802.11n was already being discussed.802.11n was already being discussed.http://siliconvalley.internet.comhttp://www.computerowrld.comAdvantages of 802.11gAdvantages of 802.11gCompatibilityCompatibility““Ultimately it takes the guesswork away from the Ultimately it takes the guesswork away from the user.” –Ben Worthenuser.” –Ben WorthenIt’s a “life extension” of 802.11bIt’s a “life extension” of 802.11bHigher speeds with little price increase.Higher speeds with little price increase.Use it when greater coverage is needed Use it when greater coverage is needed and cost is a big factor.and cost is a big factor.http://www.cio.com802.11n802.11nDefinitionDefinition802.11n is a newer standard 802.11n is a newer standard Proper name = IEEE (International Institute of Proper name = IEEE (International Institute of Electrical and Electronics Engineers) Electrical and Electronics Engineers) The number “11” indicates the IEEE working The number “11” indicates the IEEE working group within this body, known as TGn.group within this body, known as TGn.http://www.wisegeek.com/what-is-80211n.htmhttp://www.wisegeek.com/what-is-80211n.htmIEEE WLAN StandardOver-the-Air (OTA) Estimates Media Access Control Layer, Service Access Point (MAC SAP) Estimates802.11b 11 Mbps 5 Mbps802.11g 54 Mbps 25 Mbps (when .11b is not present)802.11a 54 Mbps 25 Mbps802.11n 200+ Mbps 100 Mbps Wireless LAN Throughput by IEEE StandardWireless LAN Throughput by IEEE StandardThe hope of implementing 802.11n is so that The hope of implementing 802.11n is so that consumers may be able to use more of a consumers may be able to use more of a range of products.range of products.HDTVHDTVStreaming videosStreaming videosOther consumer electonicsOther consumer electonicsPersonal computingPersonal computingHand held platformsHand held platformsWhere can it be used if Where can it be used if implemented?implemented?All major environments including:All major environments including:EnterprisesEnterprisesHouseholdsHouseholdsWireless NetworksWireless NetworksPublic hotspotsPublic hotspotsCoffee Houses (Starbucks, Internet Cafes)Coffee Houses (Starbucks, Internet Cafes)Pizza Parlors (American Dream)Pizza Parlors (American Dream)Schools (OSU entire campus)Schools (OSU entire campus)What is a hotspot?What is a hotspot?Hotspot =Hotspot = Public AreaPublic AreaWireless network connections to the internetWireless network