Eicon Networks S92 Instrukcja Użytkownika Pobierz pdf (Strona 19)

YuChakTinMichael‘sGIACGCFWProjectAssignment

Page 19

n RoutingandtrafficinspectionareCPUintensive.Dualprocessorsystemis

alwaysrecommended. Althoughmanyrouter/firewallproductsdonotmakeuse

ofSMP(SymmetricMultiprocessing,acomputerarchitecturethatmakes

multipleCPUsavailabletocompleteindividualprocessessimultaneously),the

operatingsystems(WindowsNT,Windows2000,Linux…etc) themselvescan

assignoneprocessortospecializeinhandlingtheOSstuff,thusfreeinganother

processortoperformroutingor trafficinspection.

n ItisalwaystruethatmoreRAMisbeneficial.WhenusingWindows2000Server

astheOS,128MBRAMisthebasicminimum,while256MBRAMisthe

preferredbaseline.Windows2000Professionalisgenerallylessdemanding.

n RAID1diskmirrorshouldbeusedforredundancy.WindowsNTandWindows

2000(aswellasmanyLinux/Unixdistributions)supportsRAID1natively

withouttheneedtopurchaseadditionalhardware.ThegoodthingaboutRAID1

isthatitcanprotecttheOSitself,whileRAID5cannot(Iamtalkingabout

softwareRAID5here).

n Reservesufficientdrivespacetoaccommodatethelogs.Theselogsaretobe

backedupregularly justincasefurtheranalysisisrequired.

n Goodquality 100BaseTNICsfromreputablemanufacturers(such as3COMand

Intel)areused.Thesecardsarerelatively stableand troublefreeintermsof

installationandcompatibility.

ListofEquipments:

BelowisalistofrouterandfirewallequipmentsusedintheGIACnetwork.The

networkdiagramdoesnotrepresentthe“physicallocations”oftheseequipments.In

fact,aproperlysecuredandclimatecontrolledserverroomshouldbeassignedfor

hostingtheseequipments.Physicalsecurityisasimportantaslogicalsecurity inthe

realworld.

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