VMware Workstation 7 User Manual Page 289

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VMware, Inc. 289
Chapter 14 Configuring a Virtual Network
Network Address Translation (NAT)
NATconfiguresavirtualmachinetosharetheIPandMACaddressesofthehost.
The virtualmachineandthehostshareasinglenetworkidentitythatisnotvisible
outsidethenetwork.NATcanbeusefulwhenyournetworkadministratorletsyouuse
asingleIPaddressorMACaddress.Ifcannotgi
veyourvirtualmachineanIPaddress
ontheexternalnetwork,youcanuseNATtogiveyourvirtualmachineaccesstothe
InternetoranotherTCP/IPnetwork.NATusesthehostcomputer’snetwork
connection.NATworkswithEthernet,DSL,andphonemodems.
Figure 14-2. NAT Setup
IfyouselectNAT,thevirtualmachinecanusemanystand
ardTCP/IPprotocolsto
connecttoothermachinesontheexternalnetwork.Forexample,youcanuseHTTPto
browseWebsites,FTPtotransferfiles,andTelnettologontoothercomputers.
NAT alsoletsyoutoconnecttoaTCP/IPnetworkbyusingaTo
kenRingadapteronthe
hostcomputer.
Inthedefaultconfiguration,computersontheexternalnetworkcannotinitiate
connectionstothevirtualmachine.Thatmeans,forexample,thatthedefault
configurationdoesnotletyouusethevirtualmachineasaWebservertosendWeb
pagestocomputersontheexternalnetw
ork.Thisconfig
urationprotectstheguest
operatingsystemfrombeingcompromisedbeforeyouhaveachancetoinstallsecurity
software.FormoreinformationonNAT,see“UsingNAT”onpage 316.
network
virtual
network
adapter
virtual network switch
(VMnet8)
virtual machine
DHCP server
NAT
device
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