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Chapter 5 Client Management

View Client Policies

CertainViewClientfeaturescanbecontrolledthroughpolicies.Forinformationabout

configuringandapplyingpoliciestoViewClientattheglobal,pool,oruserlevelrefer

to“ClientPolicies”onpage 183.

Client Connections from the Internet

Forausertoaccessavirtualdesktop,theirclientsystemmustbeabletoresolvethehost

nameorIPaddressofthespecifiedViewConnectionServer.Initially—andby

default—ViewConnectionServercanonlybecontactedbytunnelclientsthatreside

withinthesamenetworkandarethereforeableto

locatetherequestedserver.

Manyorganizationsrequirethatuserscanconnectfromanexternallocationbyusing

agloballyresolvabledomainorsubdomainnameorIPaddress,orbyreassigning

specificportsonanexistingaddress,inordertorouteclientrequeststotheappropriate

location(typically,thesecurityserver).For

example:

 https://view-example.com:443

 https://view.example.com:443

 https://example.com:1234

However,someadditionalconfigurationwithinViewConnectionServerisrequiredfor

addresseslikethesetowork.

Setting an External URL for View Connection Server

WhenyouuseMicrosoftRDPasthedisplayprotocol,ViewClientattemptstocreate

twoseparateTCPconnectionsbetweenitselfandViewConnectionServer.Thefirst

connectionhandlesuseroperationssuchasauthentication,desktopselection,andso

forth.Thesecondconnectionisinstantiatedafterlogonandprovidesatunnelfor

carrying

RDPdata.

ThefirstconnectionismadeusingtheURLorIPaddressenteredbytheuserintothe

client.Providingthefirewallandload‐balancingcomponentshavebeenconfigured

correctlyinyournetworkenvironment,thisrequestreachestheserver.Upon

authentication,theFQDNofViewConnectionServerisreturnedto

theclient.

Thesecondconnection(thetunnelconnection,whichisSSL‐encryptedbydefault)is

attemptedusingtheFQDN.However,theconnectionfailsiftheFQDNcannotbe

resolvedbytheexternalViewClient.Anexamplesequenceofexternalandinternal

clientinteractionswiththeserverisshowninFigure 5‐1

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Q-See Remote Client Software V 4.0.1 Spezifikationen Seite 97