Manual
45Chapter 3 Problem, Meet Solution
Problems with Your Internet Connection
YourMacBookAirhasaNetworkSetupAssistantapplicationtohelpyousetupan
Internetconnection.OpenSystemPreferencesandclickNetwork.
Clickthe“Assistme”buttontoopenNetworkSetupAssistant.
IfyouhavetroublewithyourInternetconnection,tryusingNetworkDiagnostics.
To use Network Diagnostics:
1 ChooseApple()>SystemPreferences.
2 ClickNetworkandthenclick“Assistme.”
3 ClickDiagnosticstoopenNetworkDiagnostics.
4 Followtheonscreeninstructions.
IfNetworkDiagnosticscan’tresolvetheproblem,theremaybeaproblemwiththe
Internetserviceprovider(ISP)youaretryingtoconnectto,withanexternaldeviceyou
areusingtoconnecttoyourISP,orwiththeserveryouaretryingtoaccess.
IfyouhavetwoormorecomputerssharinganInternetconnection,besurethatyour
wirelessnetworkissetupproperly.YouneedtoknowifyourISPprovidesonlyoneIP
addressorifitprovidesmultipleIPaddresses,oneforeachcomputer.
IfonlyoneIPaddressisprovided,thenyoumusthavearoutercapableofsharing
theconnection,alsoknownasnetworkaddresstranslation(NAT)or“IPmasquerading.”