Eicon Networks S92 Manual do Utilizador descarregar pdf (Página 10)

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

Page 10

Forperformancereason,aminimumoftwointernetlinksaredeployed,withone

devotedtoservicingthecustomers(B2C)andtheotheroneforservicingaccess

requestsfromexternalpartnersandsuppliers(B2B)aswellasoutgoinginternet

requestsmadebytheinternalstaffs(INET).RASaccess(RAS)ismadeavailablevia

directdialin,andhasnothingtodowiththeinternet.

B2C:

*Thisisthelinkwiththehighestexposuretosecuritythreats.

B2Ctrafficincludesinboundrequestsforthefollowingservices:

à Ecommercewebservice– TCPport80(HTTP)and443(SSL)

à Externalemailservice– TCPport25(SMTP)

à ExternalDNSservice–UDPport53(DNSrequest)

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Eicon Networks S92 Manual do Utilizador Página 10