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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.

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Sierra Wireless IPSec Guide de l'utilisateur Page 10