VMware Workstation 7 Bedienungsanleitung PDF herunterladen (Seite 405)

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Chapter 19 Setting and Using Policies and Customizing VMware Player

Therearetrade‐offsbetweenusingshorterandlongerlistsofconditions.Ifyouusea

longerlist,youminimizethechancesofafalse‐positiveresultoramisidentification.

Minimizingthechanceofafalse‐positiveresultoramisidentificationcanbeimportant

ifyouareprovidinganACEpackagetoso

meonewhoconn

ectsahostcomputerto

multiplenetworksatdifferenttimes.Ifoneoftheothernetworksmatchesthe

characteristicsyoudefineinthezonedefinition,thehostandinstanceaccesspolicies

areapplied,evenifthehostisnotconnectedtoyournetwork.

Insomecases,however,usingalong

erlistmightalsoincreasethelikelihoodthatauser

couldcircumventthedetectionmechanism.Forexample,suchanerrormightbemade

ifyouswitchthehosttouseastaticIPaddressinsteadofDHCPandconfigurethehost

withonlyasubsetofthecharacteristicsdefinedforyo

urzone,suchasonlynetwork

address,ornetworkaddressandDNSserverinformation.

Alsoconsiderthattheaddressesornamesofcertainserverscanchangeovertime.

Such changescanalsointroducedetectionissues.

Usingasmallersetofinformationinazonedescription,suchasonlythenetwork

addressandthesu

bnetmask,issafer.Thedisadvantageisthatitincreasesthechance

thatafalsepositiveormisidentificationcanoccur.Suchfalsepositivesareespecially

likelyifyournetworkisusingacommonnetblock,suchas10/8,172.16/12,or

192.168/16,thatisalsousedbyothernetworks.

Descriptions of the Zone Condition Settings

Eachzonedescriptionmustcontainoneormoreofthefollowingsettingoptions

describingtheconditionsofthezone:

 Domain–Specifiesthedomainnameofthenetwork,suchasmycompany.com.

Enteronlyonedomainname.ThevalueofAllowsubdomainsofthisdomain

governstheinterpretationofthisoption.

 Allowsubdomainsofthisdomain–ModifiestheDomainoption.Itspecifies

whether,fortheDomainzoneconditiontobemet,adomainnamemustexactly

matchthedomainnamespecifiedintheDomainboxorwhetheramatchofthe

domainnameismadeanytimethestringcontains<domain_name>.Forexample

,

ifthisoptionisselected,corp.mycompany.comisconsideredamatchfor

mycompany.com.Ifthisoptionisnotselected,corp.mycompany.comisnot

consideredamatchformycompany.com.

 Networkaddress–SpecifiesanIPaddressorsubnetrangethatthenetworkuses.

Thevalueof<subnet>,ifyouincludeasubnetrange,mustbethenumberofbits

inthenetmask.Anetworkadaptermatchesthisconditionifitisusingan

IP addressthatlieswithinanyofthespec

ifiedranges.

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