Norton AntiVirus User Manual

Norton AntiVirus™
User’s Guide
Norton AntiVirus™ Users Guide
The software described in this book is furnished under a license agreement and may be used only in accordance with the terms of the agreement.
Documentation version 8.0
Copyright Notice
Copyright 2001 Symantec Corporation
All Rights Reserved.
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NO WARRANTY. The technical documentation is being delivered to you AS-IS and Symantec Corporation makes no warranty as to its accuracy or use. Any use of the technical documentation or the information contained therein is at the risk of the user. Documentation may include technical or other inaccuracies or typographical errors. Symantec reserves the right to make changes without prior notice.
No part of this publication may be copied without the express written permission of Symantec Corporation, 20330 Stevens Creek Blvd., Cupertino, CA 95014.
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Other product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged.
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What to do if a virus is found

Is Norton AntiVirus installed?
Yes
Has Norton AntiVirus detected a virus?
Yes
See “What to do if a virus
is foundon page 63.
No
See “Installing
Norton AntiViruson
page 17.
No
See “Scan disks, folders,
and fileson page 55.
See “Keep current with
LiveUpdateon page 39.
What to do if a virus is found
6

CONTENTS

What to do if a virus is found
Chapter 1 About Norton AntiVirus
Whats new in Norton AntiVirus ........................................................11
How viruses work ..............................................................................12
Macro viruses spread quickly ......................................................12
Trojan horses hide their true purposes ...................................... 12
Worms take up space ..................................................................13
How viruses spread .....................................................................13
How Norton AntiVirus works ............................................................14
The virus definition service stops known viruses ......................14
Bloodhound technology stops unknown viruses ......................14
Script Blocking stops script-based viruses .................................14
Auto-Protect keeps you safe .......................................................15
How to maintain protection ...............................................................15
Avoid viruses ................................................................................15
Prepare for emergencies .............................................................. 16
Chapter 2 Installing Norton AntiVirus
System requirements ...........................................................................17
Before installation ...............................................................................18
Prepare your computer ...............................................................18
Create Emergency Disks ..............................................................19
Install Norton AntiVirus ...................................................................... 20
If the opening screen does not appear ......................................23
After installation ..................................................................................23
Restart your computer .................................................................23
Use the Information Wizard ........................................................ 24
Read the Readme file ...................................................................26
If you need to uninstall Norton AntiVirus .........................................27
7
Chapter 3 Norton AntiVirus basics
Work with Norton AntiVirus ..............................................................31
Access Norton AntiVirus tools .....................................................31
Temporarily disable Auto-Protect ............................................... 33
Maintain Norton AntiVirus protection ............................................... 34
About Rescue Disks .....................................................................34
Check anti-virus status .................................................................37
Keep current with LiveUpdate ....................................................39
Customize Norton AntiVirus ............................................................... 43
About Norton AntiVirus Options ................................................43
System options .............................................................................44
Internet options ............................................................................ 45
Other options ...............................................................................45
Open the Options dialog box ..................................................... 47
If you need to restore default settings in Options .....................47
For more information .........................................................................48
Use online Help ...........................................................................48
Access the User’s Guide PDF ...................................................... 49
Norton AntiVirus on the Web .....................................................50
Chapter 4 Protecting disks, files, and data from viruses
Ensure that Auto-Protect is enabled .................................................. 53
Scan disks, folders, and files ..............................................................55
Request a full system scan ..........................................................55
Scan individual elements .............................................................56
About custom scans ............................................................................56
Create a custom scan ...................................................................57
Run a custom scan .......................................................................58
Delete a custom scan ................................................................... 58
Scan email messages ..........................................................................58
Ensure that email protection is enabled .....................................58
Enable timeout protection ...........................................................59
If problems are found during a scan .................................................60
Schedule automatic virus scans ......................................................... 60
Schedule a custom scan .............................................................. 60
Edit scheduled scans ...................................................................61
Delete a scan schedule ................................................................62
8
Chapter 5 What to do if a virus is found
If a virus is found during a scan ........................................................ 64
Review the repair details .............................................................64
Use the Repair Wizard ................................................................. 64
If a virus is found by Auto-Protect ....................................................65
If you are using Windows 98/98SE/Me ......................................65
If you are using Windows NT/2000/XP .....................................66
If you have files in Quarantine .......................................................... 67
If Norton AntiVirus cannot repair a file ............................................. 69
If your computer does not start properly .......................................... 69
If you need to use Rescue Disks ................................................ 70
If you need to use Emergency Disks .......................................... 71
Look up virus names and definitions ................................................72
Look up viruses on the Symantec Web site ............................... 73
Chapter 6 Troubleshooting
Service and support solutions
CD Replacement Form
Index
9
10
CHAPTER

About Norton AntiVirus

Norton AntiVirus provides comprehensive virus prevention, detection, and elimination software for your computer. It finds and repairs infected files to keep your data safe and secure. Easy updating of the virus definition service over the Internet keeps Norton AntiVirus prepared for the latest threats.

What’s new in Norton AntiVirus

Norton AntiVirus 2002 introduces access to Norton AntiVirus tools through Windows Explorer, more extensive email support, increased automation of virus repair with improved nonobtrusive feedback, and Windows XP support.
Norton AntiVirus tools in Windows Explorer: For users with Internet
Explorer 5.0 or higher and for Windows NT users with the Windows Desktop Update, Norton AntiVirus 2002 adds a button to the Windows Explorer toolbar that allows you to view protection status, manage the Quarantine area of your computer, view the Activity Log, view the virus encyclopedia, and scan for viruses.
Expanded email protection: Norton AntiVirus now supports email
programs that use POP3 and SMTP communications protocols without having to change the email programs configuration. You can choose to scan both incoming and outgoing emails.
Automated virus repair: Norton AntiVirus can scan and repair your files
entirely in the background, requiring no intervention from you. You receive a report containing the results of the scan.
Norton AntiVirus provides complete anti-virus protection for your
Windows XP operating system.
1
11
About Norton AntiVirus

How viruses work

A computer virus is a parasitic program written intentionally to alter the way your computer operates without your permission or knowledge. A virus attaches copies of itself to other files and, when activated, may damage files, cause erratic system behavior, or display messages.
Computer viruses infect system files and documents created by programs with macro capabilities. Some system viruses are programmed specifically to corrupt programs, delete files, or erase your disk.

Macro viruses spread quickly

Macros are simple programs that are used to do things such as automate repetitive tasks in a document or make calculations in a spreadsheet. Macros are written in files created by such programs as Microsoft Word and Microsoft Excel.
Macro viruses are malicious macro programs that are designed to replicate themselves from file to file and can often destroy or change data. Macro viruses can be transferred across platforms and spread whenever you open an infected file.

Trojan horses hide their true purposes

Trojan horses are programs that appear to serve some useful purpose or provide entertainment, which encourages you to run them. But the program also serves a covert purpose, which may be to damage files or place a virus on your computer.
A Trojan horse is not a virus because it does not replicate and spread like a virus. Because Trojan horses are not viruses, files that contain them cannot be repaired. To ensure the safety of your computer, Norton AntiVirus detects Trojan horses so you can delete them from your computer.
12

Worms take up space

Wor ms are programs that replicate without infecting other programs. Some worms spread by copying themselves from disk to disk. They search for specific types of files on a hard disk or server volume, and try to damage or destroy those files. Other worms replicate only in memory, creating myriad copies of themselves, all running simultaneously, which slows down the computer. Like Trojan horses, worms are not viruses and therefore cannot be repaired. They must be deleted from your computer.

How viruses spread

A virus is inactive until you launch an infected program, start your computer from a disk that has infected system files, or open an infected document. For example, if a word processing program contains a virus, the virus activates when you run the program. Once a virus is in memory, it usually infects any program you run, including network programs (if you can make changes to network folders or disks).
Viruses behave in different ways. Some viruses stay active in memory until you turn off your computer. Other viruses stay active only as long as the infected program is running. Turning off your computer or exiting the program removes the virus from memory, but does not remove the virus from the infected file or disk. That is, if the virus resides in an operating system file, the virus activates the next time you start your computer from the infected disk. If the virus resides in a program, the virus activates the next time you run the program.
How viruses work
To prevent virus-infected programs from getting onto your computer, scan files with Norton AntiVirus before you copy or run them. This includes programs you download from news groups or Internet Web sites and any email attachments that you receive.
13
About Norton AntiVirus

How Norton AntiVirus works

Norton AntiVirus monitors your computer for known and unknown viruses. A known virus is one that can be detected and identified by name. An unknown virus is one for which Norton AntiVirus does not yet have a definition.
Norton AntiVirus protects your computer from both types of viruses, using virus definitions to detect known viruses, and Bloodhound technology and Script Blocking to detect unknown viruses. Virus definitions, Bloodhound technology, and Script Blocking are all used during scheduled scans and manual scans, and are used by Auto-Protect to constantly monitor your computer.

The virus definition service stops known viruses

The virus definition service consists of files that Norton AntiVirus uses to recognize viruses and intercept their activity. You can look up virus names in Norton AntiVirus, and access an encyclopedia of virus descriptions on the Symantec Web site. For more information, see “Look up virus names
and definitionson page 72.

Bloodhound technology stops unknown viruses

Bloodhound is the Norton AntiVirus scanning technology for detecting new and unknown viruses. It detects viruses by analyzing an executable file’s structure, behavior, and other attributes such as programming logic, computer instructions, and any data contained in the file. It also sets up simulated environments in which to load documents and test for macro viruses.

Script Blocking stops script-based viruses

A script is a list of instructions that can be executed without user interaction. Scripts can be opened with text editors or word processing programs, so they are very easy to change.
Script Blocking detects Visual Basic and Java script-based viruses without the need for specific virus definitions. It monitors the scripts for virus-like behavior and alerts you if it is found.
14

Auto-Protect keeps you safe

Norton AntiVirus Auto-Protect loads into memory when Windows starts, providing constant protection while you work.
Using Auto-Protect, Norton AntiVirus automatically:
Eliminates viruses and Trojan horses, including macro viruses, and
repairs damaged files
Checks for viruses every time you use software programs on your
computer, insert floppy disks or other removable media, or use document files that you receive or create
Monitors your computer for any unusual symptoms that may indicate
an active virus
Protects your computer from Internet-borne viruses

How to maintain protection

When Norton AntiVirus is installed, you have complete virus protection. However, new viruses are created constantly. Viruses can spread when you start your computer from an infected disk or when you run an infected program. There are several things you can to do avoid viruses and to recover quickly should a virus strike.
How to maintain protection

Avoid viruses

It is important that you practice regular file maintenance and that you keep Norton AntiVirus up-to-date.
To avoid viruses:
Write-protect removable media.
Stay informed about viruses by logging on to the Symantec Security
Use LiveUpdate regularly to update your programs and virus definition
Keep Norton AntiVirus Auto-Protect turned on at all times to prevent
Response Web site (securityresponse.symantec.com) where there is extensive, frequently updated information on viruses and virus protection.
service files. For more information, see “Keep current with LiveUpdate” on page 39.
viruses from infecting your computer.
15
About Norton AntiVirus
If Norton AntiVirus Auto-Protect is not turned on, scan removable
media before you use them. For more information, see “Scan disks,
folders, and fileson page 55.
Schedule scans to occur automatically. For more information, see
Schedule automatic virus scanson page 60.

Prepare for emergencies

It is also important that you are prepared in case your computer is infected by a virus.
To prepare for emergencies:
Back up files regularly and keep more than just the most recent
backup.
If you are using Windows NT, Windows 2000, or Windows XP and
your computer cannot start from a CD, create a set of Emergency Disks, from which you can start your computer and scan for viruses. For more information, see “Create Emergency Diskson page 19.
If you are using Windows 98 or Me, create a set of Rescue Disks, with
which you can start your computer in DOS mode and use Norton AntiVirus to fix virus-related problems and recover from a system crash. For more information, see “About Rescue Diskson page 34.
16
CHAPTER

Installing Norton AntiVirus

Before installing Norton AntiVirus, take a moment to review the system requirements listed in this chapter. Windows 98 and Windows Me users should have some blank 1.44 MB disks available to make Rescue Disks.

System requirements

To use Norton AntiVirus, your computer must have one of the following Windows operating systems:
Windows 98, 98SE
Windows Me
Windows NT 4.0 Workstation with service pack 6 or higher
Windows 2000 Professional
Windows XP Professional or Windows XP Home Edition
2
Your computer must also meet the following minimum requirements.
Windows 98/Me
Intel Pentium processor at 133MHz for Windows 98; 150 MHz for
Windows Me
32 MB of RAM
50 MB of available hard disk space
Internet Explorer 4.01 service pack 1 or higher
CD-ROM or DVD-ROM drive
17
Installing Norton AntiVirus
Windows NT 4.0 Workstation
Service pack 6 or higher
Intel Pentium processor at 133MHz or higher
32 MB of RAM
50 MB of available hard disk space
Internet Explorer 4.01 service pack 1 or higher
CD-ROM or DVD-ROM drive
Windows 2000 Professional
Intel Pentium processor at 133MHz or higher
64 MB of RAM
50 MB of hard disk space
Internet Explorer 4.01 service pack 1 or higher
CD-ROM or DVD-ROM drive
Windows XP Home Edition/Professional
Intel Pentium processor at 300MHz or higher
128 MB of RAM
50 MB of hard disk space
Internet Explorer 4.01 service pack 1 or higher
CD-ROM or DVD-ROM drive

Before installation

Before you install Norton AntiVirus, prepare your computer. If your computer cannot start from a CD, create Emergency Disks.

Prepare your computer

If you have a previous version of Norton AntiVirus or any other anti-virus programs on your computer, you must uninstall them before installing Norton AntiVirus. For more information, see “If you need to uninstall
Norton AntiViruson page 27.
To uninstall other anti-virus programs, see the user documentation that came with the program.
18
You must close all other Windows programs before installing Norton AntiVirus.

Create Emergency Disks

Emergency Disks are used to start your computer and scan for viruses in case of a problem. If your computer can start from a CD, you can use the Norton AntiVirus CD in place of Emergency Disks and do not need to create them. If you cannot start your computer, you can use these instructions to create Emergency Disks on another computer. For more information, see “If you need to use Emergency Diskson page 71.
Use the Norton AntiVirus CD to create Emergency Disks. You will need several formatted 1.44 MB disks.
To create Emergency Disks
1 Insert the Norton AntiVirus CD into the CD-ROM drive.
2 Click Browse CD.
3 Double-click the Support folder.
4 Double-click the Edisk folder.
5 Double-click Ned.exe.
6 In the welcome window, click OK.
7 Label the first disk as instructed and insert it into drive A.
8 Click Yes.
9 Repeat steps 7 and 8 for the subsequent disks.
10 When the procedure is complete, click OK.
11 Remove the final disk from drive A and store the Emergency Disk set
in a safe place.
Before installation
19
Installing Norton AntiVirus

Install Norton AntiVirus

Install Norton AntiVirus from the Norton AntiVirus CD.
To install Norton AntiVirus
1 Insert the Norton AntiVirus CD into the CD-ROM drive.
2 In the Norton AntiVirus 2002 window, click Install Norton AntiVirus.
If your computer is not set to automatically open a CD, you will have to open it yourself. For more information, see “If the opening screen
does not appearon page 23.
3 If you are installing in Windows 98, 98SE, or Me, Norton AntiVirus
scans your computers memory for viruses before installing. If a virus is found, you are prompted to use your Emergency Disks to remove the virus before continuing. For more information, see “If you need to use
Emergency Diskson page 71.
4 The opening installation window reminds you to close all other
Windows programs. Click Next.
20
5 In the License Agreement window, click I accept the license
agreement.
If you decline, you cannot continue with the installation.
Install Norton AntiVirus
Click Next.
6
7 Select a folder into which you want to install Norton AntiVirus, then
click Next.
21
Installing Norton AntiVirus
Confirm the installation location, then click Next.
8
9 After Norton AntiVirus is installed, scroll through the Readme text, then
click Next.
22
10 Click Finish to exit the installation.

If the opening screen does not appear

Sometimes, a computers CD-ROM drive does not automatically start a CD.
To start the installation from the Norton AntiVirus CD
1 On your desktop, double-click My Computer.
2 In the My Computer dialog box, double-click the icon for your
CD-ROM drive.
3 From the list of files, double-click CDSTART.EXE.

After installation

If your computer needs to be restarted after Norton AntiVirus is installed, a prompt appears giving you the option to do so immediately. After restart or, if your computer does not need to be restarted, after installation is complete, the Information Wizard appears.
Note: If you bought your computer with Norton AntiVirus already installed, the Information Wizard appears the first time you start Norton AntiVirus. You must accept the license agreement that appears in the Information Wizard for Norton AntiVirus to be activated.
After installation

Restart your computer

After installation, you may receive a prompt telling you that your computer needs to be restarted for the updates to take effect.
To restart your computer
In the dialog box, click Yes.
If you click No, configuration of Norton AntiVirus is not complete until you restart your computer.
23
Installing Norton AntiVirus

Use the Information Wizard

The Information Wizard lets you register your copy of Norton AntiVirus, get information about the virus protection subscription service, select post-install tasks to be done automatically, and review your Norton AntiVirus settings. If you do not complete the Information Wizard, Norton AntiVirus uses the default settings for post-install tasks and program options.
Note: If you choose not to register the software using the Information Wizard or if registration fails for some reason, you can register on the Symantec Web site at www.symantec.com or by using the Product Registration option on the Help menu. On the Web site, go to the Products page for the registration link.
To use the Information Wizard
1 In the welcome window, click Next.
If you purchased your computer with Norton AntiVirus already installed, you must accept the license agreement in order to use Norton AntiVirus.
2 Click I accept the license agreement, then click Next.
3 In the first Registration window, select the country from which you are
registering and the country in which you live (if different), then click Next.
4 If you would like information from Symantec about Norton AntiVirus,
select the method by which you want to receive that information, then click Next.
5 Enter your name and whether you want Norton AntiVirus registered to
you or your company, then click Next.
6 Enter your address, then click Next.
7 Answer the survey questions to help Symantec improve its products
and services, then click Next when you are done or to skip the survey.
8 Select whether you want to register Norton AntiVirus through the
Internet or by mail, then click Next.
If you submitted your registration through the Internet, a dialog box displays the serial number for your product.
9 Write down the number or click Print to get a copy of your
registration information for future reference.
24
After installation
Click Next.
10
11 Select whether you want to use your existing profile the next time you
register a Symantec product, or type the information as part of registration.
12 Click Finish.
13 Review the subscription service information, then click Next.
14 Select the post-install tasks that you want Norton AntiVirus to perform
automatically. Your options are:
Run LiveUpdate to ensure that you have the latest virus definitions.
For more information, see “Keep current with LiveUpdate” on page 39.
Perform a full system scan. For more information, see “Scan disks,
folders, and fileson page 55.
Schedule a weekly scan of your local hard drives. You must have
Microsoft Scheduler installed to use this option. If you select this option, you can change the schedule for this scan as desired. For more information, see “Schedule automatic virus scans” on page 60.
If you are installing in Windows 98 or Windows Me, you also have
the option to create a Rescue Disk set. For more information, see
About Rescue Disks on page 34.
15 Click Next.
25
Installing Norton AntiVirus
Review the configuration settings for Norton AntiVirus. If you want to
16
change any of the settings, do so using Norton AntiVirus Options. For more information, see “Customize Norton AntiVirus” on page 43.
17 Click Finish.
If you selected any post-install tasks, they start automatically.

Read the Readme file

The Readme file contains technical tips and information about product changes that occurred after this guide went to press. It is installed on your hard disk in the same location as the Norton AntiVirus product files.
To read the Readme file
1 Using Windows Explorer, navigate to the location where your Norton
AntiVirus files are installed.
If you installed Norton AntiVirus in the default location, the files are in C:\Program Files\Norton AntiVirus.
2 Double-click Readme.txt to open the file in Notepad or WordPad.
The Readme file includes instructions for printing it if you want to do so.
3 Close the word processing program when you are done reading the
file.
26

If you need to uninstall Norton AntiVirus

If you need to uninstall Norton AntiVirus
If you need to remove Norton AntiVirus from your computer, use the Uninstall Norton AntiVirus option on the Windows Start menu.
Note: During uninstall, Windows may indicate that it is installing software. This is a standard Microsoft installation message and can be disregarded.
To uninstall Norton AntiVirus
1 On the Windows taskbar, click Start > Programs > Norton AntiVirus
> Uninstall Norton AntiVirus.
27
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