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Chapter 7 Offline Desktop

Oncecheckedout,OfflineDesktopusesthinprovisionedvirtualdiskstostore

informationonthehostsystem.Thistypeofdiskoccupiesnomorespacethanthat

requiredbythedataitcontains,andphysicaldiskspaceisonlyallocatedasdatais

written;thisminimizesthestoragefootprintofthe

downloadedsystem.

Ifanetworkconnectionispresentontheclientsystem,thedesktopthathasbeen

checkedoutwillcontinuetocommunicatewithViewConnectionServerinorderto

obtainusagedata,providepolicyupdates,andensurethatlocallycached

authenticationcriteriaiscurrent.Contactisattemptedevery5minutes.

Intheabsence

ofanetworkconnection,thedesktopwillfallbackonlocallycachedinformationin

ordertoauthenticatetheuserduringlogin.

Thedataoneachofflinesystemisencryptedandhasalifetimecontrolledthrough

policy—iftheclientlosescontactwiththeViewConnectionServer,themaximum

time

withoutservercontactistheperiodinwhichtheusercancontinuetousethedesktop

beforetheyarerefusedaccess;thiscountdownisresetoncetheconnectionis

re‐established.Priortodisconnection,theuserisnotifiedthattheofflinedesktop

lifetimeisabouttoexpire.

Similarly,ifuser

accessisremoved—thatis,ifentitlementiswithdrawnortheaccount

issuspended—theclientsystembecomesinaccessiblewhenthecacheexpiresorafter

theclientismadeawareofthischangebytheViewConnectionServer(whichever

comesfirst).Inthisscenario,theuserisnotnotifiedpriortodisconnection.

Tunneled Communications and SSL

OfflineDesktopsupportstunneledornon‐tunneledcommunicationsforLAN‐based

datatransfers.

 Whentunnelingisenabled,alltrafficisroutedthroughtheViewConnection

Server.

 Whentunnelingisnotenabled,datatransferstakeplacedirectlybetweenthe

onlinedesktophostsystemandtheofflineclient.

YoucandisabletunnelingbyselectingtheDirectconnectionforOfflineDesktop

operationscheckboxintheConfigurationpageoftheadministrativeinterface.

Inadditiontospecifyingtherouteforcommunications,

youcanencryptthe

communicationsanddatatransfersthattakeplacebetweentheOfflineDesktopclient

andtheViewConnectionServerbyselectingtheRequireSSLforOfflineDesktop

operationscheckboxintheConfigurationpageoftheadministrativeinterface.

OTEBypassingthetunnelandusinganunencryptedconnectionincreasesdata

transferspeedattheexpenseofsecuredatacommunication.Theencryptionsettinghas

noeffectontheofflinedataitself,whichisalwaysencryptedontheclientsystem.

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Q-See Remote Client Software V 4.0.1 Spezifikationen Seite 171