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NUIT Tech TalkNUIT Tech Talk:Spring Cleaning –
Keep Your Computer in Great ShapeApril 11, 2007
Rosa GonzálezDistributed Support SpecialistDistributed Support ServicesNorthwestern University Information Technology
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Spring Cleaning: Keep Your Computer in Great Shape
Agenda:• Why perform user maintenance? • Security measures• Computer performance • Privacy updates• Disaster planning
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Why Perform User Maintenance?
• Prevent security lapses• Check up on vital functions• Assess current uses and needs• Discard junk
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Security Measures• Antiviral protection• Firewalls• Operating system
updates• Application updates• Spyware protection
Complete instructions available at: www.it.northwestern.edu/5steps/
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Get Antiviral Protection • Keep out dangerous viruses• NUIT provides Symantec
AntiVirus for download
• Highly recommended for all machines
• Symantec uses LiveUpdate• Schedule daily updates• Schedule daily Scans
• Instructions at www.it.northwestern.edu
What:
When:
Where:
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Use Firewalls • Enable native or third party
firewalls– Native: Windows XP and
Mac OS X have built-in firewalls
– Third party: Zonealarm, BlackIce, Norton Personal(For use with older operating systems)
• Compare firewall software:www.it.northwestern.edu/security/securing-machine/software.html
What:
Where:
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Check Firewalls
• Test your firewall protection using Web-based scanners such as Shields Up!
Go to: www.grc.com
How:
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Check Operating System Updates What: • Ensure that your operating system has the necessary
updates
• Automatic updates:– Enable in Start>Settings>Control Panel in Windows– Enable in System Preferences in OS X
• Manual updates for Windows:– Log in with administrative account– Use Internet Explorer– Tools Menu in IE select Windows Update– More info: www.microsoft.com/security
How:
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Check Microsoft Updates • Microsoft Update
– Updates Windows operating system. Select Microsoft applications
• Windows Server Update Services– Best for centrally managed
work environments or complex home networks
– Requires server operating system
• http://update.microsoft.com
What:
How:
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Check Application Updates
• Applications are a major source of system vulnerabilities
• May need frequent updates
• Enable automatic application updates– Look under Help in many programs
• Replace obsolete software, if possible• Visit vendor’s Web site• Sign up for vendor’s mailing list• Specific information at
www.sans.org/newsletters/risk
What:
How:
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Use Spyware Protection
• Remove programs that watch or track the way you use computer
• Use Spybot Search & Destroy (NUIT recommended)
• Other options for non-University use: TrendMicro, Lavasoft Ad-aware, Windows Defender
What:
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Use Spyware Protection and Removal
• To install:– www.it.northwestern.
edu/5steps/step4.html– No charge to download– Easy to install– Use immunization feature
• To use:– Click Check for Problems– Click Fix Selected Problems
How:
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Clean Out Your Browser:Remove Cache Files
• Cache saves files and images from visited sites
• Creates a record of Web activity
• To remove:– IE Tools / Internet
Options– General tab, Delete– Check Delete files and
Delete cookies
What:
How:
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Recommended Steps
• Setup Internet Options to use minimum space for
Temporary Internet Files• and History
• Setup:– IE Tools / Options– General tab– Settings– Change the Default Disk
space to 50– Change the Default
History to 1
What:
How:
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Clean Out Your Browser:Remove Passwords
• Remove passwords and form fillers• AutoComplete remembers what you typed• Can be a security issue on shared machines
• To remove:– IE Tools / Internet Options – Content tab– In the AutoComplete section– Select Settings– Select Clear Passwords and Clear Forms
What:
How:
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Clean Out Other Browsers
• To remove private data:– Tools / Clear private data – Select what you would like to clear
• To remove private data:– Tools / Delete private data– Select Delete – Select Advanced to alter deletion settings
Firefox:
Opera:
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Check System Performance
• Remove temporary files• Check hard drive for errors• Defragment drives
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Remove Temporary Files • Includes downloaded files
and programs• Clean out the junk to free
up disk space
• Disk cleanup– Start / Run– Type: Cleanmgr– Click OK– Select everything EXCEPT
for Office Setup Files
What:
How:
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Check Hard Drive for Errors• Check the hard disk for file
system errors and bad sectors
• Perform a monthly check– Select local disk– Right click for Properties– Tools tab– Check Now– Will prompt for Restart to
proceed with Error-checking
What:
How:
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Defragment Drives • Fragmented drives:
– May hinder performance– Greatly reduces chances
of recovering files in case of system problems
• Run Disk Defragmenter monthly
• Need Administrator access– Start / All Programs – Accessories / System
Tools– Disk Defragmenter– Select drive, Analyze, and
Defragment
What:
How:
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Plan for a Computer Disaster
• Make a Backup• Know about System Restore
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Make a Backup• Are you prepared to lose data?• Make a plan!
• For Windows backup– Start / Run– Type ntbackup– Click OK
• Third-party tools available– Ghost– Retrospect– .mac– Others
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Make a BackupBackup media
– Second hard drive– External hard drives
• Many come with backup software– Optical media such as CDs, DVDs, or flash drives– Network drive such as mapped drive,
server space– Web-based tools or sites
Automatic or manual?– Automated backups are best
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Schedule Backups • Scheduled Tasks:
– Setup once and the task will run automatically as long as the pc is on.
• Schedule Backups to run weekly – Start /Settings– Control Panel– Scheduled Tasks– Add Scheduled Task
What:
How:
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Schedule Backups Cont’d
– Select Next– Select Backup from the
list and select Next
How:
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Schedule Backups Cont’d
– Select Weekly– Select Next
How:
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Schedule Backups Cont’d
– Select Time and Day of the week
– Select Next
How:
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Schedule Backups Cont’d
– Enter User Name and Password
– Select Next
How:
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Schedule Backups Cont’d
– Select Finish to close the Scheduled Task Wizard
How:
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Know About System Restore• Go back in time with system restore
– Restores PC to a previous configuration
– Does not affect data– Used by Windows XP only
– Start / Programs– Accessories / System Tools– Select Restore my computer to
an earlier time
– Directions on how to restore to a previous state:
How:
http://support.microsoft.com/kb/306084/
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System Restore Cont’d• Select any date from the
calendar
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System Restore Cont’d- Make sure to save your
work before selecting Next
- Computer will automatically restart and display a confirmation after you login
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Clean Your Desktop• Don’t use your desktop
as your primary file storage area
• In a System Restore, some desktop files may be deleted
• Store files in My Documents or Drive folders
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Questions?
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NUIT ResourcesLearn more at www.it.northwestern.edu/
“Get Control” Web sitewww.it.northwestern.edu/5steps/
Other support resourceswww.it.northwestern.edu/support/
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Please Join Us for Upcoming Tech Talks:
Please Join Us for Upcoming Tech Talks:
Stay Connected & Secure …All Summer Long
Wednesday, May 23, 2007Same location, Noon – 1 p.m.
Please register online: www.it.northwestern.eduwww.it.northwestern.edu