Eicon Networks S92 Uživatelský manuál stáhnout pdf (Strana 12)

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

Page 12

à InternalstaffsasVPNclientsaccessingexternalpartners’securesitesvia

PPTP

RAS:

Companystaffsareaccessingtheinhouseserverresourcesfromhomeorfrom

businesstripsviaRASdialin.RAStrafficdoesnotpassthroughtherouter.

ArchitectureOverview

A firewallisasystemdesignedtopreventunauthorizedaccesstoorfromaprivate

network. Itcanbeimplementedinbothhardwareandsoftware,oracombinationof

both.Sinceallmessagesenteringorleavingtheinternalnetworkmustpassthrough

thefirewallforsecurity examination,thefirewallitselfisapotentialbottleneck.Also,

regardlessofhowafirewallisimplemented,agoodfirewallproductcostsalargesum

ofmoney.

OurgoalforthesecurityarchitectureofGIACEnterpriseistosecureitsnetworkand

atthesametimeachieveabalancebetweensecurity,performanceandcost. To

achievesuchbalance,atthefrontlineweusehigherendsecurityproducts,whileat

thedepartmentallevelweusemoreeconomicalsolutions.

DesignPrincipleandTr adeoff

Theexhibitbelowshowsthatmultiplefirewallandroutingdevicesaredeployedin

thearchitecture.

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Eicon Networks S92 Uživatelský manuál Strana 12