2
Access Point with Switch
Wanttoconnectawireless
LANtoawiredLAN?Choosethe
AccessPointwithSwitch
(LW6004A).Itletsany802.11gor
802.11bcompliantPCjointhe
wirelessnetwork.Thisintegral
switchwithfiveLANconnections
enableswireddevices,segments,
orentirenetworkstocommuni-
catewithyourwirelessWAN.
Theaccesspointsupports
Web-basedconfiguration.Ithasa
built-inDHCPservertoallow
multiplewirelessandwiredusers
togettheirIPaddress
automatically.
Withtheaccesspoint’sESSID
authentication,64-,128-,and
152-bitWEPencryptionandMAC
addressfiltering,youcanprevent
unauthorisedwirelessstations
fromaccessingyourwireless
network.
TheAPalsoincludesa
2.2-dBmdipoleantenna.
Wireless Router
ThePureNetworking802.11g
WirelessRouter(LW6005A)
allowsyoutosharetheInternet
amongoneWANconnectionand
uptofourLANconnectionsvia
oneADSLorcablemodem.
Theroutergivesyouhigh
Internetaccessthroughput(up
to50Mbps)andsupportsupto
253users.Itincludesfour
10-/100-MbpsLANportsandone
10-/100-MbpsWANport.
Specialapplications,DMZ,
virtualservers,accesscontrol,
firewall,andbridgemodearealso
supported.Youcanmonitorthe
router’sstatusviaDHCPclient
log,securitylog,anddevice/
connectionstatus.Orconfigureit
remotelyviaitsWeb-based
GraphicalUserInterface(GUI).
Clientusersarerequiredto
getauthorisationbefore
connectingtoaccesspoints(APs)
orAProuters,andthedata
transmittedinthenetworkis
encrypted/decryptedbya
dynamicallychangedsecretkey.
Automaticfallbackalsoincreases
datasecurityandreliability.
8-dBi Omnidirectional Antenna and
14-dBi Directional Panel Antenna
Ifyouneedtoincreasethe
transmittingandreceivingpower
ofyourwirelessaccesspointor
router,orderoneofour2.4-GHz
Antennas.There’san8-dBi
Omnidirectionalmodel(LW6200A)
anda14-dBiDirectionalPanel
model(LW6201A).
Choosetheomnidirectional
modelwhenyouhaveseveral
accesspointsthatyouwantto
connecttogetherwithaclear
line-of-sightinmultipledirections
fromthemainaccesspoint.
Selectthedirectionalpanel
modelwhenyouneedtoconnect
justtwoaccesspointsorrouters
togetherwithaclearline-of-sight.
Youcanalsousethedirectional
panelataremotesitewherethe
accesspointisconfiguredasa
bridgeconnectingaremoteLAN
viawirelesstothemainoffice.
Thisnotonlyincreasesthe
distancefromtheremotesiteto
themainoffice,butalsocuts
downoninterference.
Choose the operatin mode
Whenyou’reusingthePure
Networking802.11gWireless
Adapters,accesspoints,or
routers,twooperatingmodesare
possible.
Ad-hocmodeallowsyouto
connecttoanotherwireless
stationinthewirelessLAN
networkwithoutanaccesspoint
orrouter.Typically,you’dhavea
groupofPCswithwirelesslinksto
eachotherinasmallofficeor
homeenvironment(SOHO).Each
PCwouldcontainawireless
adapter(PCMCIA,PCI,orUSB).
Morecomplicatedapplica-
tionsrequireanaccesspointor
router.Suppose,forexample,that
youwanttolinkawireless
networktoawirednetwork.
Whenyouconnectawireless
LANandacombination(wireless
andwired)LANtogether,it’s
calledaninfrastructure
configuration.Infrastructure
moderequiresan802.11access
point.Thismodeisusedonan
enterprisescaleforwireless
accesstoacentraldatabase,or
forawirelessapplicationfor
mobileworkers.
Keep your network safe and secure
Whenyouhaveawireless
network,securityisabig
concern.Youdon’twantthe
wirelesssignalstobeintercepted
andsenttosomeoneelse’s
wirelessdevice.Ourwireless
adapters,switches,androuters
encryptdataforsuperiorsecurity
usingWEP,TKIP,andAES.
(Windows98SE,Me,and
WindowsNTusethesethree
typesofsecurity.)
WEPisWiredEquivalent
Privacy,adataprivacy
mechanismbasedona40-bit
sharedkeyalgorithm,as
describedintheIEEE802.11
standard.
TKIPisaquick-fixmethodto
quicklyovercometheinherent
weaknessesinWEPsecurity,
especiallythereuseofencryption
keys.TKIPisinvolvedintheIEEE
802.11iWLANsecuritystandard.
AES(AdvancedEncryption
Standard),achip-basedsecurity,
hasbeendevelopedtoensurethe
highestdegreeofsecurityand
authenticityfordigitalinformation
that‘sintransitacrossthe
networkorstored.Thisstandard
makesmoreefficientuseof
hardwareand/orsoftwarethan
previousencryptionstandards.
AESisalsoincludedintheIEEE
802.11istandard.
ComparedwithAES,TKIPisa
temporaryprotocolforreplacing
WEPsecurityuntilmanufacturers
implementAESatthehardware
level.
Anotherwaytoprotectyour
networkfromintrudersis
authentication.Three
authenticationmodesare
possible:None,Shared,orWPA-
PSK.
WindowsXPandWindows
2000usetwotypesof
authenticationforthewireless
device(adapter,switch,orrouter)
inahome(WPA-PSK,noserver)
orenterprise(WPA,withserver).
WPA-PSKisaspecialmode
designedforhomeandsmall-
businessuserswhodonothave
accesstonetworkauthentication
servers.Inthismode,knownas
Pre-SharedKey,youmanually
enterthestartingpasswordinthe
accesspointorgateway,aswell
asineachwirelessstationinthe
network.WPAtakesover
automaticallyfromthatpoint,
keepingunauthorisedusersthat
don’thaveamatchingpassword
fromjoiningthenetworkwhile
encryptingthedatatraveling
betweenauthoriseddevices.The
encryptionmethodsincludeTKIP
andAES.
Confi uration is easy
Allofthewirelessdevices
includeaconfigurationutility.
Thispowerfulapplicationhelps
youconfiguretheadapter,switch,
orrouter,andmonitorthelink
statusandstatisticsduringthe
communicationprocess.
TechnicallySpeaking