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Table Of Contents
VMware ACE Administrator’s Manual
134 VMware, Inc.
Anotherpointtoconsideristhattheaddressesornamesofcertainserverscanchange
overtime.Suchchangescanalsointroducedetectionissues.
Usingasmallersetofinformation—forexample,usingonlythenetworkaddressand
thesubnetmask—inazonedescriptionlessensthechancethatthedetection
mechanismfails
torestrictahostorguestthatshouldberestricted,butitalsoincreases
thechancethatafalsepositiveormisidentificationcanoccur.Suchfalsepositivesare
especiallylikelyifyournetworkisusingacommonnetblock,suchas10/8,172.16/12or
192.168/16,thatisalsousedbyothernetworks.
Descriptions of the Zone Condition Settings
Eachzonedescriptionmustcontainoneormoreofthefollowingsettingoptions
describingtheconditionsofthezone:
DomainSpecifiesthedomainnameofthenetwork—forexample,
mycompany.com.Onlyoneentrycanbeused.Youcan’tusealistofentries.The
interpretationofthisoptionisgovernedbythevalueofAllowsubdomainsofthis
domain(below).
AllowsubdomainsofthisdomainModifiestheDomainoption(above).It
specifieswhether,fortheDomainzoneconditiontobemet,adomainnamemust
exactlymatchthedomainnamespecifiedintheDomainboxorwhetheramatch
ofthedomainnameismadeanytimethestringcontains<
domain_name>.For
example,ifthisoptionisselected,then
corp.mycompany.comisconsidereda
matchfor
mycompany.com.Ifthisoptionisnotselected,then
corp.mycompany.comisnotconsideredamatchformycompany.com.Thedefault
settingforthisoptionisdeselected.
NetworkaddressSpecifiesanIPaddressorsubnetrangethatisusedbythe
network.Thevalueof
<subnet>,ifyouincludeasubnetrange,mustbethe
numberofbitsinthenetmask.Anetworkadaptermatchesthisconditionifitis
usinganIPaddressthatlieswithinanyofthespecifiedranges.
DNSserversSpecifiesoneormoreIPaddressesorhostnamesforDNSservers
onthenetwork.Anetworkadaptermatchesthisconditionifitisusingatleastone
oftheseservers.
MatchatleastModifiestheDNSserversoption.Anetworkmighthavemultiple
DNSservers,andahostmightbeconfiguredtousemorethanoneDNSserver.If
thevalueofthisoptionisgreaterthan
1,thehostmustbeusingthespecified
numberofDNSserversonthelistbeforeanetworkadapterisconsideredtobeon
thedefinednetwork.