User guide

Introducing IPSec
Rev 2.2 Jun.11 3
Scenarios
SierraWirelessAirLinkmodemswithIPSecaredesignedto
supportthegateway‐to‐gatewaysecuritymodel.
IPsecisthemostge
neralsecuritymodel,inthatitallowseither
sidetoinitiateaVPNsession.Someuserscenario’sare
discussedinthissection.
Inthe
seexamples,theterm“VPNtunnel”isusedtoindicatea
secureIPSecconnection.
Remote Access Scenarios
1. Thisscenarioshowsthreeremoteaccessactivities:
a. AV
LApplicationServer(onewaytransmissionof
securedata):AirLinkmodemhasGPScapability
(PinPointmodel).The modemhassetupaVPNtunnel
withacorporateVPNboxandisconfiguredtosend
GPSlocationdatatothecorporatenetwork.
Figure 1-2: AVL Application Server scenario
b. CorporateEmailServer(twowaytransmissionof
securedata):AirLinkmodemisconnectedtoalaptop.
ThemodemsetuphasaVPNtunnelwiththe
corporateVPNbox.Throughthemodem,thelaptop
cansecurelyaccessthecorporateemailserver.