internet security
DESCRIPTION
An introduction for internet and computer security. Some of Windows-based examples are used.TRANSCRIPT
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PC/Internet SecurityPC/Internet Security
Dec 12, 2007
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PasswordPasswordCommon security
solution
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PasswordPassword
» No reason to share password because you can:• Share files/folders• Remote Desktop• E-mail Proxy
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Managing PasswordsManaging Passwords» Choosing a good passphrase
• “1wb1DCH”http://www.aces.edu/extconnections/2006/10/
» Use different passwords for different systems
» Password Managers• Password Safe
http://passwordsafe.sourceforge.net• Others
http://www.lifehack.org/articles/technology/10-free-ways-to-track-all-your-passwords.html
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Safely Using EmailSafely Using EmailAvoid hoaxes and phishing
attempts
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HoaxesHoaxes» Trickery» Please forward» Usually harmless» Waste time and resources
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Phishing Clues Phishing Clues » Return address appears to be legitimate» Warns of consequences unless urgent action is taken» No personal info or account name/number in message» Name of link doesn’t match destination
• Name of link: https://www.firstnational.com• Destination of link: http://
www.sargonas.com/firstnational/login.htm» Link is not secure (HTTPS)
http://www.aces.edu/extconnections/2006/12http://www.wikipedia.org/wiki/Phishinghttp://jdorner.blogspot.com/2007/03/every-now-and-then-i-come-across.html
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Don’t Become A VictimDon’t Become A Victim
» “Google” a sentence from the message to see if it’s a hoax or phishing attempt
» Never click on web links and be mindful of HTTPS
» Only open attachments which are in expected messages (just because you know the sender doesn’t mean the message is legitimate)
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Protecting You and Your Operating System
Protecting You and Your Operating System
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Ways to Secure MS WindowsWays to Secure MS Windows
» Install virus protection software» Turn on the Windows firewall» Turn on Windows updates» Use spyware/adware prevention
software» Use Windows Security Center» Use limited accounts
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Virus Protection SoftwareVirus Protection Software» Install & routinely update virus protection
software• McAfee• Trend Micro• Sophos• AVG
• Free for non-commercial use• Download at www.downloads.com
• Symantec (Norton)• Resource intensive
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Windows FirewallWindows Firewall» Choose
“On”» Only unblock
programs that you trust
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Windows UpdatesWindows Updates
» Select “Automatic (recommended)”
» Select “Everyday”» Choose an
appropriate time» Leave computer
on! (check sleep/hibernate)
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Spyware/MalwarePrevention Software
Spyware/MalwarePrevention Software
» Preventative—combine w/ Reactive• Windows Defender
http://www.microsoft.com/athome/security/spyware/software/default.mspx
• AVG Anti-Spywarewww.downloads.com
» Reactive (run once a week)• Spybot
www.downloads.com• Adaware
www.downloads.com
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Security CenterSecurity Center
» Ensures:• Firewall is on• Automatic
updates are installed
• Virus protection installed & up-to-date
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Security CenterSecurity Center
You don’t want the RED or Yellow shield
Click on the shield to fix the problem
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Limited AccountsLimited Accounts» Prohibited from installing software
• Prevents installation of malware/viruses• User has access to currently installed
software» Prohibited from accessing Administrator’s
documents & settings• Prevents changes to administrator
password• Prevents access to Administrator’s
Documents, Desktop, etc.» Create/modify system accounts under
“Control Panel/User Accounts”
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Limited AccountsLimited Accounts
» Easily switch between accounts
» Leave programs running while others login (windows-L)
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Home NetworkingHome NetworkingEveryone Needs a Router!
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Home Networking RoutersHome Networking Routers» One internet connection,
multiple computers» Firewall protection» Access restrictions
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One Internet ConnectionOne Internet Connection
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Firewall ProtectionFirewall Protection» One-way valve that lets you out, but doesn’t
let intruders in• Prevents unauthorized access to your
computer(s)• Hides your computer(s) from the internet while
still allowing access to the internet
» Justification: Attacks on AU (week of 5/28-6/02)
• 90,540 blocked• 25,147 suspicious• 3,893 possibly successful
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Access RestrictionsAccess Restrictions
» Control when a computer can access the internet
• Deny/Allow by website or keyword
» Multiple configurations
• Everyday or only on school days etc.
• All the time, or only between 4p.m. & 10p.m, etc.
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Secure WirelessSecure Wireless» Most routers can be configured w/a
CD» What can be done manually?
• Change the SSID (wireless network name)
• Disable SSID Broadcast (make it invisible)
• Require a password to join the wireless network
• Restrict by MAC address
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Questions?Questions?
Thank You!Greg Parmer, Jonas Bowersock, Anne Adrian