Specifications

52 Chapter 4 Problem, Meet Solution
Network Connections
MakesuretheEthernetcableispluggedintoyouriMacandintothenetwork.
CheckthecablesandpowersuppliestoyourEthernethubsandrouters.
IfyouhavetwoormorecomputerssharinganInternetconnection,besurethatyour
networkissetupproperly.YouneedtoknowwhetheryourISPprovidesonlyoneIP
addressormultipleIPaddresses,oneforeachcomputer.
IfonlyoneIPaddressisprovided,thenyoumusthavearoutercapableofsharingthe
connection,alsoknownasnetworkaddresstranslation(NAT)or“IPmasquerading.”
Forsetupinformation,checkthedocumentationprovidedwithyourrouterorask
thepersonwhosetupyournetwork.
AnAirPortbasestationcanbeusedtoshareoneIPaddressamongmultiple
computers.ForinformationaboutusinganAirPortbasestation,seeHelpCenter
(clickHelpinthemenubarandsearchfor“airport”)orvisittheAirPortwebsiteat
www.apple.com/support/airport.
Ifyoucan’tresolvetheissueusingthesesteps,contactyourISPornetworkadministrator.