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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
Spring Cleaning: Keep Your Computer in Great Shape
Agenda:• Why perform user maintenance? • Security measures• Computer performance • Privacy updates• Disaster planning
Why Perform User Maintenance?
• Prevent security lapses• Check up on vital functions• Assess current uses and needs• Discard junk
Security Measures• Antiviral protection• Firewalls• Operating system
updates• Application updates• Spyware protection
Complete instructions available at: www.it.northwestern.edu/5steps/
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:
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:
Check Firewalls
• Test your firewall protection using Web-based scanners such as Shields Up!
Go to: www.grc.com
How:
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:
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:
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:
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:
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:
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:
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:
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:
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:
Check System Performance
• Remove temporary files• Check hard drive for errors• Defragment drives
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:
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:
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:
Plan for a Computer Disaster
• Make a Backup• Know about System Restore
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
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
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:
Schedule Backups Cont’d
– Select Next– Select Backup from the
list and select Next
How:
Schedule Backups Cont’d
– Select Weekly– Select Next
How:
Schedule Backups Cont’d
– Select Time and Day of the week
– Select Next
How:
Schedule Backups Cont’d
– Enter User Name and Password
– Select Next
How:
Schedule Backups Cont’d
– Select Finish to close the Scheduled Task Wizard
How:
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/
System Restore Cont’d• Select any date from the
calendar
System Restore Cont’d- Make sure to save your
work before selecting Next
- Computer will automatically restart and display a confirmation after you login
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
Questions?
NUIT ResourcesLearn more at www.it.northwestern.edu/
“Get Control” Web sitewww.it.northwestern.edu/5steps/
Other support resourceswww.it.northwestern.edu/support/
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