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Cou
rse
ILT
Routine maintenance
Unit objectives Discuss the necessity of applying
software patches and fixes Discuss viruses and anti-virus strategy
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Topic A
Topic A: Keeping NOS software up to date
Topic B: Virus protection
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Support packs and service packs
Guidelines:– Make a backup of your system before
using the service pack– Upgrade your system only when the
service pack’s updates apply– Make sure you have the service pack
that applies to your hardware, especially if a vendor-specific version is needed
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Hot fixes and patches
Released to fix one specific problem Designed to take care of a specific
problem on a specific application Included in a support pack or service
pack release
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Updating a device driver
1. Launch the Device Manager
2. Right-click the device and select Properties
3. Select the Driver tab
4. Click Update Driver
5. Specify whether you want to update the driver automatically or from a list or specific location
6. Click Next and then follow the prompts to install the new driver. If a newer driver is not found, the wizard informs you that you already have the most updated driver
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Application updates
Fixed by patches Visit the manufacturers’ Web sites
regularly to check for product updates and fixes
Common application Web sites include:– www.novell.com– www.microsoft.com– www.adobe.com– www.symantec.com– www.lotus.com
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Activity A-1
Discussing software patches and updates
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Routine maintenance
Topic A: Keeping NOS software up to date
Topic B: Virus protection
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Virus protection
Computer viruses– Can spread easily across a network– Might infect every node on the network
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Viruses
Software programs that have the ability to reproduce by modifying other programs or duplicating themselves
Types of viruses:– Program– Boot– Multipartite– Specialized
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Specialized viruses
Use the macro language of the specific application to spread
Also known as macro viruses Include:
– Word macro viruses– Excel macro viruses– CMOS virus
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Activity B-1
Discussing viruses
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Virus protection
Involves the following measures:– Avoiding infection– Keeping viruses from spreading
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Anti-virus programs
Programs that can be run periodically to check for viral infection
Include:– Symantec’s Norton Anti-Virus– Network Associates’ McAfee Anti-Virus– Computer Associates’ eTrust
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Virus recovery
Has to be tailored according to the virus type:– Boot sector– Executable files– FAT or directory tables
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Anti-virus software on the network
An important element of a comprehensive security program
Includes a variety of safety measures such as:– Regular backup schedules– Meaningful password protection– Training– Awareness
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E-mail protection
E-mail protection program:– Included in most anti-virus software
suites– Integrates itself with the e-mail system
on the network by scanning incoming mail and attachments
– Stops viruses before they enter your network
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Updating virus signatures
Accomplished by configuring the anti-virus software to retrieve and install the updates from the manufacturer’s Web site automatically
Can also be done manually by logging in to the Web site and downloading the latest updates to the anti-virus package you’re using
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Activity B-2
Discussing virus protection
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Unit summary
Discussed the necessity of applying support packs and service packs
Discussed viruses and anti-virus strategies