User Guide

92 Chapter 4 Problem, Meet Solution
Network Connections
MakesuretheEthernetcableispluggedintoyourcomputer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ifyourISPprovidesonlyoneIPaddress
orifitprovidesmultipleIPaddresses,oneforeachcomputer.
IfonlyoneIPaddressisused,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.YoucanuseanAirPortbasestationtoshareoneIP
addressamongmultiplecomputers.
ForinformationaboutusinganAirPortbasestation,searchfor“AirPort”MacHelpor
visittheAirPortsupportwebsiteatwww.apple.com/support/airport.
Ifyoucannotresolvetheissueusingthesesteps,contactyourISPornetwork
administrator.