User guide

Introduction to the Raven XE
Rev 2.0 Oct.09 7
ItisrecommendedthatyouuseaUSB2.0cablewithyour
RavenXEandconnectdirectlytoyourcomputerforbest
throughput.
Virtual serial port
TheRavenXEsupportsonevirtualserialportoverUSB.This
VSPcanbeused,forexample,tosendATcommands,ortorun
manyserialbasedapplicationssuchasHyperTerminal
®
.
Networking
IPSec
TheIPprotocolthatdrivestheInternetisinherentlyinsecure.
InternetProtocolSecurity(IPSec),whichisastandards‐based
protocol,securescommunicationsofIPpacketsoverpublic
networks.
IPSecisacommonnetworklayersecuritycontrolandisused
tocreateavirtualprivatenetwork(VPN).
TheadvantagesoftheIPSecfeatureincludes:
• DataProtection:DataContentConfidentialityallowsusers
toprotecttheirdatafromanyunauthorizedview,because
thedataisencrypted(encryptionalgorithmsareused).
• AccessControl:AccessControlimpliesasecurityservice
thatpreventsunauthorizeduseofaSecurityGateway,a
networkbehindagatewayorbandwidthonthatnetwork.
• DataOriginAuthentication:DataOriginAuthentication
verifiestheactualsender,thuseliminatingthepossibility
offorgingtheactualsender’sidentificationbyathird‐
party.
• DataIntegrity:DataIntegrityAuthenticationallowsboth
endsofthecommunicationchanneltoconfirmthatthe
originaldatasenthasbeenreceivedastransmitted,
withoutbeingtamperedwithintransit.Thisisachieved
byusingauthenticationalgorithmsandtheiroutputs.
TheIPSecarchitecturemodelincludestheSierraWireless
AirLinkgatewayasaremotegatewayatoneendcommuni
‐
cating,throughaVPNtunnel,withaVPNgatewayatthe
otherend.TheremotegatewayisconnectedtoaRemote
networkandtheVPNisconnectedtotheLocalnetwork.The
communicationofdataissecurethroughtheIPSecprotocols.