62 Chapter 4 Problem, Meet Solution
Network Connections
MakesuretheEthernetcableisconnectedtoyourMacBookProandtothenetwork.
CheckthecablesandpowersuppliestoyourEthernethubsandrouters.
Ifyouhavetwoormorecomputersattemptingtoshare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,checkHelpCenterorgototheAirPortSupportwebsiteat
www.apple.com/support/airport.
Ifyoucan’tresolvetheissueusingthesesteps,contactyourISPornetworkadministrator.
Problems with Wi-Fi Communication
If you have trouble using Wi-Fi communication

ÂMakesurethecomputerornetworkyouaretryingtoconnecttoisrunningandhas

awirelessaccesspoint.

ÂMakesureyouhaveproperlyconguredthesoftwareaccordingtotheinstructions

thatcamewithyourbasestationoraccesspoint.