Personal Computer User Manual

•Power-OnPassword:WhenaPower-OnPasswordisset,youarepromptedtotypeavalidpassword
eachtimethecomputeristurnedon.Thecomputercannotbeuseduntilthevalidpasswordistyped
in.Formoreinformation,see“Power-OnPassword”onpage66.
•HardDiskPassword:SettingaHardDiskPasswordpreventsunauthorizedaccesstothedataonthehard
diskdrive.WhenaHardDiskPasswordisset,youarepromptedtotypeavalidpasswordeachtimeyou
trytoaccesstheharddiskdrive.Formoreinformation,see“HardDiskPassword”onpage66
.
•AdministratorPassword:SettinganAdministratorPassworddetersunauthorizedusersfromchanging
congurationsettings.Ifyouareresponsibleformaintainingthecongurationsettingsofseveral
computers,youmightwanttosetanAdministratorPassword.Formoreinformation,see“Administrator
Password”onpage66
.
Youdonothavetosetanypasswordstouseyourcomputer.However,usingpasswordsimproves
computingsecurity.
Windowspasswords
DependingonyourversionoftheWindowsoperatingsystem,youcanusepasswordsforavarietyof
features,includingcontrollingloginaccess,accesstosharedresources,networkaccess,andindividualuser
settings.Formoreinformation,see“HelpandSupport”onpage101
.
Usingandunderstandingrewalls
Arewallcanbehardware,software,oracombinationofbothdependingonthelevelofsecurityrequired.
Firewallsworkonasetofrulestodeterminewhichinboundandoutboundconnectionsareauthorized.If
yourcomputerispreintalledwitharewallprogram,ithelpsprotectagainstcomputerInternetsecurity
threats,unauthorizedaccess,intrusions,andInternetattacks.Italsoprotectsyourprivacy.Formore
informationabouthowtousetherewallprogram,refertothehelpsystemofyourrewallprogram.
TheWindowsoperatingsystempreinstalledonyourcomputerprovidestheWindowsFirewall.Fordetailson
usingtheWindowsFirewall,referto“HelpandSupport”onpage101
.
Protectingdataagainstviruses
Yourcomputerispreinstalledwithanantivirusprogramtohelpyouguardagainst,detect,andeliminate
viruses.
Lenovoprovidesafullversionofantivirussoftwareonyourcomputerwithafree30-daysubscription.After
30days,youmustrenewthelicensetocontinuereceivingtheantivirussoftwareupdates.
Note:Virusdenitionlesmustbekeptup-to-datetoguardagainstnewviruses.
Formoreinformationabouthowtouseyourantivirussoftware,refertothehelpsystemofyourantivirus
software.
Chapter4.Security27