McAfee GUARD DOG 2 User manual

McAfee Guard Dog
User’s Guide

COPYRIGHT
Copyright © 1999 Network Associates, Inc. and its Affiliated Companies. All Rights Reserved.
No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval
system, or translated into any language in any form or by any means without the written
permission of Network Associates, Inc.
LICENSE AGREEMENT
NOTICE TO ALL USERS: CAREFULLY READ THE FOLLOWING LEGAL AGREEMENT
("AGREEMENT"), FOR THE LICENSE OF SPECIFIED SOFTWARE ("SOFTWARE") BY
NETWORK ASSOCIATES, INC. ("McAfee"). BY CLICKING THE ACCEPT BUTTON OR
INSTALLING THE SOFTWARE, YOU (EITHER AN INDIVIDUAL OR A SINGLE ENTITY)
CONSENT TO BE BOUND BY AND BECOME A PARTY TO THIS AGREEMENT. IF YOU DO
NOT AGREE TO ALL OF THE TERMS OF THIS AGREEMENT, CLICK THE BUTTON THAT
INDICATES THAT YOU DO NOT ACCEPT THE TERMS OF THIS AGREEMENT AND DO
NOT INSTALL THE SOFTWARE. (IF APPLICABLE, YOU MAY RETURN THE PRODUCT
TO THE PLACE OF PURCHASE FOR A FULL REFUND.)
1. License Grant. Subject to the payment of the applicable license fees, and subject to the
terms and conditions of this Agreement, McAfee hereby grants to you a non-exclusive,
non-transferable right to use one copy of the specified version of the Software and the
accompanying documentation (the "Documentation"). You may install one copy of the
Software on one computer, workstation, personal digital assistant, pager, "smart phone"
or other electronic device for which the Software was designed (each, a "Client Device").
If the Software is licensed as a suite or bundle with more than one specified Software
product, this license applies to all such specified Software products, subject to any
restrictions or usage terms specified on the applicable price list or product packaging that
apply to any of such Software products individually.
a. Use. The Software is licensed as a single product; it may not be used on more than one
Client Device or by more than one user at a time, except as set forth in this Section 1.
The Software is "in use" on a Client Device when it is loaded into the temporary
memory (i.e., random-access memory or RAM) or installed into the permanent memory
(e.g., hard disk, CD-ROM, or other storage device) of that Client Device. This license
authorizes you to make one copy of the Software solely for backup or archival
purposes, provided that the copy you make contains all of the Software's proprietary
notices.
b. Server Use. You may use the Software on a Client Device as a server ("Server") within
a multi-user or networked environment ("Server-Mode") only if such use is permitted
in the applicable price list or product packaging for the Software. A separate license is
required for each Client Device or "seat" that may connect to the Server at any time,
regardless of whether such licensed Client Devices or seats are concurrently connected
to, accessing or using the Software. Use of software or hardware that reduces the
number of Client Devices or seats directly accessing or utilizing the Software (e.g.,
"multiplexing" or "pooling" software or hardware) does not reduce the number of
licenses required
Issued May 1999 / McAfee Guard Dog

(i.e., the required number of licenses would equal the number of distinct inputs to the
multiplexing or pooling software or hardware "front end"). If the number of Client
Devices or seats that can connect to the Software can exceed the number of licenses you
have obtained, then you must have a reasonable mechanism in place to ensure that your
use of the Software does not exceed the use limits specified for the licenses you have
obtained. This license authorizes you to make or download one copy of the
Documentation for each Client Device or seat that is licensed, provided that each such
copy contains all of the Documentation’s proprietary notices.
c. Volume Licenses. If the Software is licensed with volume license terms specified in the
applicable price list or product packaging for the Software, you may make, use and
install as many additional copies of the Software on the number of Client Devices as the
volume license authorizes. You must have a reasonable mechanism in place to ensure
that the number of Client Devices on which the Software has been installed does not
exceed the number of licenses you have obtained. This license authorizes you to make
or download one copy of the Documentation for each additional copy authorized by the
volume license, provided that each such copy contains all of the Documentation’s
proprietary notices.
2. Term. This Agreement is effective for an unlimited duration unless and until earlier
terminated as set forth herein. This Agreement will terminate automatically if you fail to
comply with any of the limitations or other requirements described herein. Upon any
termination or expiration of this Agreement, you must destroy all copies of the Software
and the Documentation. You may terminate this Agreement at any point by destroying
all copies of the Software and the Documentation.
3. Updates. For the time period specified in the applicable price list or product packaging for
the Software you are entitled to download revisions or updates to the Software when and
as McAfee publishes them via its electronic bulletin board system, website or through
other online services. For a period of ninety (90) days from the date of the original
purchase of the Software, you are entitled to download one (1) revision or upgrade to the
Software when and as McAfee publishes it via its electronic bulletin board system, website
or through other online services. After the specified time period, you have no further
rights to receive any revisions or upgrades without purchase of a new license or annual
upgrade plan to the Software.
4. Ownership Rights. The Software is protected by United States copyright laws and
international treaty provisions. McAfee and its suppliers ownand retainall right, title and
interest in and to the Software, including all copyrights, patents, trade secret rights,
trademarks and other intellectual property rights therein. Your possession, installation,
or use of the Software does not transfer to you any title to the intellectual property in the
Software, and you will not acquire any rights to the Software except as expressly set forth
in this Agreement. All copies of the Software and Documentation made hereunder must
contain the same proprietary notices that appear on and in the Software and
Documentation.
User’s Guide iii

5. Restrictions. You may not rent, lease, loan or resell the Software. You may not permit
third parties to benefit from the use or functionality of the Software via a timesharing,
service bureau or other arrangement, except to the extent such use is specified in the
applicable list price or product packaging for the Software. You may not transfer any of
the rights granted to you under this Agreement. You may not reverse engineer,
decompile, or disassemble the Software, except to the extent the foregoing restriction is
expressly prohibited by applicable law. You may not modify, or create derivative works
based upon, the Software in whole or in part. You may not copy the Software or
Documentation except as expressly permitted in Section 1 above. You may not remove
any proprietary notices or labels on the Software. All rights not expressly set forth
hereunder are reserved by McAfee. McAfee reserves the right to periodically conduct
audits upon advance written notice to verify compliance with the terms of this
Agreement.
6. Warranty and Disclaimer
a. Limited Warranty. McAfee warrants that for sixty (60) days from the date of original
purchase the media (e.g., diskettes) on which the Software is contained will be free from
defects in materials and workmanship.
b. Customer Remedies. McAfee’s and its suppliers’ entire liability and your exclusive
remedy for any breach of the foregoing warranty shall be, at McAfee’s option, either (i)
return of the purchase price paid for the license, if any, or (ii) replacement of the
defective media in which the Software is contained. You must return the defective
media to McAfee at your expense with a copy of your receipt. This limited warranty is
void if the defect has resulted from accident, abuse, or misapplication. Any replacement
media will be warranted for the remainder of theoriginal warranty period. Outside the
United States, this remedy is not available to the extent McAfee is subject to restrictions
under United States export control laws and regulations.
c. Warranty Disclaimer. Except for the limited warranty set forth herein, THE
SOFTWARE IS PROVIDED "AS IS." TO THE MAXIMUM EXTENT PERMITTED BY
APPLICABLE LAW, MCAFEE DISCLAIMS ALL WARRANTIES, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
NONINFRINGEMENT WITH RESPECT TO THE SOFTWARE AND THE
ACCOMPANYING DOCUMENTATION. YOU ASSUME RESPONSIBILITY FOR
SELECTING THE SOFTWARE TO ACHIEVE YOUR INTENDED RESULTS, AND FOR
THE INSTALLATION OF, USE OF, AND RESULTS OBTAINED FROM THE
SOFTWARE. WITHOUT LIMITING THE FOREGOING PROVISIONS, MCAFEE
MAKES NO WARRANTY THAT THE SOFTWARE WILL BE ERROR-FREE OR FREE
FROM INTERRUPTIONS OR OTHER FAILURES OR THAT THE SOFTWARE WILL
MEET YOUR REQUIREMENTS. SOME STATES AND JURISDICTIONS DO NOT
ALLOW LIMITATIONS ON IMPLIED WARRANTIES, SO THE ABOVE LIMITATION
MAY NOT APPLY TO YOU. The foregoing provisions shall be enforceable to the
maximum extent permitted by applicable law.
iv McAfee Guard Dog

7. Limitation of Liability. UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL
THEORY, WHETHER IN TORT, CONTRACT, OR OTHERWISE, SHALL MCAFEE OR
ITS SUPPLIERS BE LIABLE TO YOU OR TO ANY OTHER PERSON FOR ANY
INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY
CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF
GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR FOR
ANY AND ALL OTHER DAMAGES OR LOSSES. IN NO EVENT WILL MCAFEE BE
LIABLE FOR ANY DAMAGES IN EXCESS OF THE LIST PRICE MCAFEE CHARGES
FOR A LICENSE TO THE SOFTWARE, EVEN IF MCAFEE SHALL HAVE BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THIS LIMITATION OF
LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL INJURY
TO THE EXTENT THAT APPLICABLE LAW PROHIBITS SUCH LIMITATION.
FURTHERMORE, SOME STATES AND JURISDICTIONS DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES,
SO THIS LIMITATION AND EXCLUSION MAY NOT APPLY TO YOU. The foregoing
provisions shall be enforceable to the maximum extent permitted by applicable law.
8. United States Government. The Software and accompanying Documentation aredeemed
to be "commercial computer software" and "commercial computer software
documentation," respectively, pursuant to DFAR Section 227.7202 and FAR Section
12.212, as applicable. Any use, modification, reproduction, release, performance, display
or disclosure of the Software and accompanying Documentation by the United States
Government shall be governed solely by the terms of this Agreement and shall be
prohibited except to the extent expressly permitted by the terms of this Agreement.
9. Export Controls. Neither the Software nor the Documentation and underlying
information or technology may be downloaded or otherwise exported or re-exported (i)
into (or to a national or resident of ) Cuba, Iran, Iraq, Libya, North Korea, Sudan, Syria or
any other country to which the United States has embargoed goods; or (ii) to anyone on
the United States Treasury Department’s list of Specially Designated Nations or the
United States Commerce Department’s Table of Denial Orders. By downloading or using
the Software you are agreeing to the foregoing and you are certifying that you are not
located in, under the control of, or a national or resident of any such country or on any
such list.
IN ADDITION, YOU SHOULD BE AWARE OF THE FOLLOWING: EXPORT OF THE
SOFTWARE MAY BE SUBJECT TO COMPLIANCE WITH THE RULES AND
REGULATIONS PROMULGATED FROM TIME TO TIME BY THE BUREAU OF
EXPORT ADMINISTRATION, UNITED STATES DEPARTMENT OF COMMERCE,
WHICH RESTRICT THE EXPORT AND RE-EXPORT OF CERTAIN PRODUCTS AND
TECHNICAL DATA. IF THE EXPORT OF THE SOFTWARE IS CONTROLLED UNDER
SUCH RULES AND REGULATIONS, THEN THE SOFTWARE SHALL NOT BE
EXPORTED OR RE-EXPORTED, DIRECTLY OR INDIRECTLY, (A) WITHOUT ALL
EXPORT OR RE-EXPORT LICENSES AND UNITED STATES OR OTHER
GOVERNMENTAL APPROVALS REQUIRED BY ANY APPLICABLE LAWS, OR (B) IN
VIOLATION OF ANY APPLICABLE PROHIBITION AGAINST THE EXPORT OR
RE-EXPORT OF ANY PART OF THE SOFTWARE.
User’s Guide v

SOME COUNTRIES HAVE RESTRICTIONS ON THE USE OF ENCRYPTION WITHIN
THEIR BORDERS, OR THE IMPORT OR EXPORT OF ENCRYPTION EVEN IF FOR
ONLY TEMPORARY PERSONAL OR BUSINESS USE. YOU ACKNOWLEDGE THAT
THE IMPLEMENTATION AND ENFORCEMENT OF THESE LAWS IS NOT ALWAYS
CONSISTENT AS TO SPECIFIC COUNTRIES. ALTHOUGH THE FOLLOWING
COUNTRIES ARE NOT AN EXHAUSTIVE LIST THERE MAY EXIST RESTRICTIONS
ON THE EXPORTATION TO, OR IMPORTATION OF, ENCRYPTION BY: BELGIUM,
CHINA (INCLUDING HONG KONG), FRANCE, INDIA, INDONESIA, ISRAEL,
RUSSIA, SAUDI ARABIA, SINGAPORE, AND SOUTH KOREA. YOU
ACKNOWLEDGE IT IS YOUR ULTIMATE RESPONSIBILITY TO COMPLY WITH ANY
AND ALL GOVERNMENT EXPORT AND OTHER APPLICABLE LAWS AND THAT
MCAFEE HAS NO FURTHER RESPONSIBILITY AFTER THE INITIAL SALE TO YOU
WITHIN THE ORIGINAL COUNTRY OF SALE.
10. High Risk Activities. The Software is not fault-tolerant and is not designed or intended
for use in hazardous environments requiring fail-safe performance, including without
limitation, in the operation of nuclear facilities, aircraft navigation or communication
systems, air traffic control, weapons systems, direct life-support machines, or any other
application in which the failure of the Software could lead directly to death, personal
injury, or severe physical or property damage (collectively, "High Risk Activities").
McAfee expressly disclaims any express or implied warranty of fitness for High Risk
Activities.
11. Miscellaneous. This Agreement is governed by the laws of the United States and the State
of California, without reference to conflict of laws principles. The application of the
United Nations Convention of Contracts for the International Sale of Goods is expressly
excluded. This Agreement sets forth all rights for the user of the Software and is the entire
agreement between the parties. This Agreement supersedes any other communications
with respect to the Software and Documentation. This Agreement may not be modified
except by a written addendum issued by a duly authorized representative of McAfee. No
provision hereof shall be deemed waived unless such waiver shall be in writing and
signed by McAfee or a duly authorized representative of McAfee. If any provision of this
Agreement is held invalid, the remainder of this Agreement shall continue in full force
and effect. The parties confirm that it is their wish that this Agreement has been written
in the English language only.
12. McAfee Customer Contact. If you have any questions concerning these terms and
conditions, or if you would like to contact McAfee for any other reason, please call (408)
988-3832, fax [phone], orwrite: McAfee Software, 3965 Freedom Circle, Santa Clara,
California 95054. http://www.mcafee.com.
Statements made to you in the course of this sale are subject to the Year 2000 Information
and Readiness Disclosure Act (Public Law 105-271). In the case of a dispute, this Act may
reduce your legal rights regarding the use of any statements regarding Year 2000
readiness, unless otherwise specified in your contract or tariff.
vi McAfee Guard Dog

User’s Guide vii
Table of Contents
Chapter 1. Welcome to Guard Dog™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Guard Dog and the Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
How Guard Dog works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Guard Dog and your Internet Connection . . . . . . . . . . . . . . . . . . . . . . . . .1
What Internet problems Guard Dog solves . . . . . . . . . . . . . . . . . . . . . . . .2
What’s new in Guard Dog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
About Guard Dog documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
How this book is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Using Guard Dog help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Chapter 2. Installing Guard Dog™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Installing Guard Dog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Troubleshooting installation problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Step 1: Clean up your hard drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Step 2: Remove temporary files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Step 3: Close other software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Installing other software from the Guard Dog CD . . . . . . . . . . . . . . . . . . . . . .11
Chapter 3. Quick Tour of Guard Dog™. . . . . . . . . . . . . . . . . . . . . . . . . . .13
Viewing the Guard Dog video . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Using the Guard Dog interview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
What information does Guard Dog ask me to enter? . . . . . . . . . . . . . . .14
Why should I create an Emergency Disk? . . . . . . . . . . . . . . . . . . . . . . .15
How password protection effects using Guard Dog . . . . . . . . . . . . . . .16
Using the Guard Dog Home screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Opening and closing the Guard Dog Home screen . . . . . . . . . . . . . . . .18
Performing a CheckUp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Updating Guard Dog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Viewing the Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
What Guard Dog does while your PC is running . . . . . . . . . . . . . . . . . . . . . . .21
Using the Guard Dog shortcut menu . . . . . . . . . . . . . . . . . . . . . . . . . . .21

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viii McAfee Guard Dog
Responding to Guard Dog alert messages . . . . . . . . . . . . . . . . . . . . . . .22
Using Browser Buddy to retrieve or store your Web site passwords .23
Using file encryption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Chapter 4. Customizing Guard Dog™. . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Restarting the Interview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Changing Protection Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Preferences settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Scheduling Guard Dog actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Changing CheckUp Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Chapter 5. Privacy Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
What Cookie Blocker does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Responding to a Cookie Blocker alert message . . . . . . . . . . . . . . . . . .36
Why should I change my Cookie Blocker settings? . . . . . . . . . . . . . . .37
What Identity Protector does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Responding to an Identity Protector alert message . . . . . . . . . . . . . . .38
Why should I change my Identity Protector settings? . . . . . . . . . . . . .39
What Web Trail Cleaner does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Responding to the Web Trail Cleaner alert message . . . . . . . . . . . . . .40
Why should I change my Web Trail Cleaner settings? . . . . . . . . . . . . .41
What Search Filter does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Chapter 6. Security Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
What Gatekeeper does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Responding to a Gatekeeper alert messages . . . . . . . . . . . . . . . . . . . . .43
Why should I change my Gatekeeper settings? . . . . . . . . . . . . . . . . . . .45
What File Guardian does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Responding to a File Guardian alert messages . . . . . . . . . . . . . . . . . . .47
Why should I change my File Guardian settings? . . . . . . . . . . . . . . . . .49
What Password Manager does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Chapter 7. Using AntiVirus Features . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Looking for viruses with CheckUp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Continuing virus protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
What Virus Sentry does . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

User’s Guide ix
Table of Contents
Responding to a Virus Sentry alert message . . . . . . . . . . . . . . . . . . . . .54
Why should I change my Virus Sentry settings? . . . . . . . . . . . . . . . . . .54
Keeping virus protection up-to-date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Appendix A. Internet Security and Privacy . . . . . . . . . . . . . . . . . . . . . . .59
Networks and the Internet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
TCP/IP is the subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Why packets? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
The Internet and the Web…what is the difference? . . . . . . . . . . . . . . . .60
Privacy and security on the Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Why does Internet privacy matter to me? . . . . . . . . . . . . . . . . . . . . . . . .61
Privacy on the Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Who is snooping? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Snooping and sniffing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Web servers and firewalls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
What can I do to keep my stuff safe? . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
How can I tell if a Web site is secure? . . . . . . . . . . . . . . . . . . . . . . . . . . .63
How does encryption work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Security on the Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Nasty applets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Can I prevent programs from accessing the Internet? . . . . . . . . . . . . . .66
Computer viruses and the Web . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Are viruses really that dangerous? . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Types of viruses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
How can my PC become infected with a virus? . . . . . . . . . . . . . . . . . . .68
Frequently asked questions about Internet privacy . . . . . . . . . . . . . . . . . . . .68
Sources for Internet privacy and security information . . . . . . . . . . . . . . . . . .70
Finding out about Internet hoaxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
More information about computer viruses . . . . . . . . . . . . . . . . . . . . . . .70
More information about security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
More information about privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Appendix B. Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
How to Contact McAfee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Customer service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

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x McAfee Guard Dog
Technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
McAfee training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74

1
User’s Guide 1
1Welcome to Guard Dog™
Guard Dog and the Internet
In the last few years the Internet has changed from a communications network
used almost exclusively by governments and universities to an information
treasure house used by people of all ages and occupations. With an Internet
account you can send electronic mail (e-mail) around the world in seconds, do
research without leaving home, meet new friends in an online chat room, or
shop without getting out of your bathrobe. However, with all this potential
comes a certain element of risk. When you use the Internet, information is
transmitted from your computer to other computers in the
Internet—information you may not want people to have. And those
computers can also send files to your computer. While most of these files are
harmless, some can invade your privacy or even damage the data on your
computer’s hard drive.
How Guard Dog works
There are two main ways that Guard Dog protects you:
• You can find any potential privacy, security, and virus threats that exist on
your PC by performing a CheckUp. You are guided step-by-step through
solving each problem.
• Once installed, a portion of Guard Dog remains active in your PC’s
memory and watches over your PC. When Guard Dog detects a potential
problem, it takes action based on your preferences—it either takes care of
the problem automatically or pops up an alert message to ask you how to
proceed.
With Guard Dog, you are in control at all times. You decide what security and
privacy features to use. If your concerns or computing habits change, it is easy
to change Guard Dog to meet your needs.
Guard Dog and your Internet Connection
Guard Dog relies on your Internet Connection to provide its Internet security
features.Unless you havean Internetproviderandbrowser softwaredesigned
for Windows 95 or Windows 98, Guard Dog can provide only virus protection.

Welcome to Guard Dog™
2 McAfee Guard Dog
To use all Guard Dog features, you must have an Internet connection through
a local network or a modem. Some networks have an Internet connection that
you can use by connecting to the network-either directly or through dial-up
networking. If you don’t connect through a network, your computer must
have a modem installed.
You can establish an Internet connection through an Internet Service Provider
(ISP) such as Netcom or Earthlink. An ISP acts as a middleman between you
and the Internet Your computer connects (using your modem) to the ISP’s
equipment, which in turn connects to the Internet. You may also be connected
to the Internet through an online service such as America Online or
Compuserve.
In addition, you must also have a browser. A browser is software, such as
Netscape Navigator or Microsoft Internet Explorer (it must be a version
designed for Windows 95 or Windows 98), that allows you to view text and
graphics and download files from Web sites. America Online 3.0 for Windows
95 and Compuserve Interactive 3.0 both include browsers that are compatible
with Guard Dog.
What Internet problems Guard Dog solves
This section briefly describes how Guard Dog protects you from the most
common Internet threats. If you want more background information on
Internetprivacy,security,andvirusissues,see“InternetSecurity andPrivacy”
on page 59.
Privacy threats
•Identity Protector monitors your Internet connection and warns you
before private information is sent to an unsecure Internet site. It stops
programs and other people that use your computer (like your kids) from
sending your name and credit card numbersover theInternet without your
OK.
•Cookie Blocker prevents Web sites from storing cookies on your hard
drive. Third-party Web sites use cookies to track your Web browsing
habits. You can choose your level of interaction with Cookie Blocker. (For
more information, see “What are cookies and how are they used?” on
page 69.)
•Web Trail Cleanercleans up your Web browsing trails—cached files, list of
URLs (Uniform Resource Locator, also known as Web address) visited,
history file—when you close your browser. Others can track your online
movements by viewing the files and URLs left over from your Internet
browsing.

User’s Guide 3
Welcome to Guard Dog™
•Search Filter prevents search information that you request at one Web site
from being passed along to the next site you visit. Without Search Filter,
your browser can transfer your search request information from one Web
site to another without your knowledge.
Security threats
•Gatekeeper lets you control the programs that have access to your Internet
connection. Programs on your PC can be programmed to access to the
Internet without your consent.
•CheckUp can check for and if necessary, display the Web page fromwhich
you can install the latest Netscape or Internet Explorer version. Older
Netscape or Internet Explorer software installed on your PC may have
security flaws.
•File Guardian protects files that contain your sensitive data from being
opened, renamed, copied, moved, or deleted. Programs, such as ActiveX
and Java programs, can scan your PC for personal information or delete
files without your permission.
File Guardian also limits access to protected files either to programs you
specify or through file encryption. It can limit the programs that can access
your tax, on-line banking, or personal accounting data files.
•Password Manager stores your Web site login names and passwords for
protected Web sites in one secure location. When you are visiting a site that
requires this information, drag it from Browser Buddy to the form
displayed in your browser. No more storing your login names and
passwords in an unsecure location, such as on a sticky note on your
monitor or in a text file on your Windows desktop.
Virus threats
•Virus Sentry checks for boot sector, partition table, and memory viruses
during your DOS startup. It also watches for viruses while you work with
program, document, and e-mail attachment files.
•Virus Check in either CheckUp or Scheduler will catch file and macro
viruses, and Trojan Horses.
What’s new in Guard Dog
Guard Dog version 2 includes these new features.

Welcome to Guard Dog™
4 McAfee Guard Dog
•New interface
Easier to use—you don’t have to know a lot about the inner workings of
your PC and the Internet.
•Guard Dog password
Protects the information and settings in Guard Dog from being viewed or
changed. It also prevents others using your computer from sending out
information that you specify as private.
•Multimedia introduction tutorial
Walks you through Guard Dog’s features and teaches you the facts about
today’s Internet threats.
•Improved cookie management
Selectively remove cookies that you don’t want in CheckUp.
•Personal identity protection
“Mark” personal identity information and sensitive files (such as financial
records and credit card numbers) so they’ll never be sent over the Internet
without your OK.
•Additional Scheduled events
Schedule events that automatically:
• Remove viruses and other hostile programs.
• Remove cookies, browser History records, and browser Cache files.
• Encrypt or decrypt files protected by File Guardian.
• Remind you to create or update your Emergency Disk or Guard Dog
files.
•Encrypt sensitive files
Add an extra layer of protection by encoding files to prevent them from
being read—until you decode them.
•Web site password management
Store and manage your Web site passwords in one convenient, secure
location.
About Guard Dog documentation
This manual provides thebasic information you needto install, setup, and use
Guard Dog. More detailed information about Guard Dog is provided by Help.

User’s Guide 5
Welcome to Guard Dog™
How this book is organized
This User’s Guide is designed to get you using Guard Dog quickly. Read
chapters 1 and 2 to get Guard Dog installed and running. You need only read
Chapters 3, 4, 5, and 6 if you want further information on customizing Guard
Dog or using specific features. If you are new to the Internet or just want to
find out more about Internet privacy and security issues, read Appendix A.
Using Guard Dog help
To view Guard Dog
1. In the Guard Dog Home screen, click Help.
2. Click Contents and Index to open the Help Topics window.
Table 1-1.
To find out Read
What this version of Guard Dog does and how
to find information about Guard Dog. Welcome to Guard Dog™
System requirements andhow toinstall Guard
Dog. Chapter 1. Installing Guard Dog™
How to use the main features of Guard Dog. Chapter 2. Quick Tour of Guard
Dog™
How to change CheckUp and Protection
settings or schedule automatic checks and
reminders.
Chapter 3. Customizing Guard
Dog™
What the Cookie Blocker, Identity Protector,
Web Trail Cleaner, and Search Filter features
are and how to work with them.
Chapter 4. Using Guard Dog
Privacy Features
What the Gatekeeper, File Guardian, and
Password Manager features are and how to
work with them.
Chapter 5. Using Guard Dog
Security Features
What the AntiVirus features are and how to
work with them. Chapter 6. Using Guard Dog AntiVirus Features
What privacy, security, and virus issues exist
on the Internet. Appendix A. About Internet Security and Privacy
How to contact McAfee Software sales,
customer service and support departments. Appendix B. Contacting McAfee Software

Welcome to Guard Dog™
6 McAfee Guard Dog
3. Click one of the following:
• Contents displays the topics in the Help file organized in book form.
• Index lets you search for specific information.
To display help for a screen
1. In the Guard Dog Home screen, click Help.
2. Click Help for this screen to display a help topic that explains what you
can do in or what you may need to know about the current Guard Dog
screen.
To get help for settings in a dialog box
• Whenever you see the button in the upper-right corner of a dialog
box, click the button, then click on the setting for which you want
information.

2
User’s Guide 7
2Installing Guard Dog™
Most installation problems are a caused by having programs running while
you try to install new software. Even if the installation appears normal, you
won’t be able to runthe new program.To avoidinstallation problems, closeall
open programs before you install Guard Dog, including programs that run in
the background, such as screen savers or virus checkers.
System requirements
To use Guard Dog you need:
• IBM PC or compatible computer running Windows 95 or Windows 98.
• 16 megabytes (MB) minimum of RAM.
• 20 MB free hard disk space to install Guard Dog and Oil Change.
Additional disk space is required to install any optional Internet software
that may be included on the compact disc (CD) version.
• 256-color video display or better. Guard Dog looks and operates best in a
resolution of 800x600 pixels (or greater) and a color palette of 32,000 color
mode (15 bit) or higher. 256-color palette is supported, but may cause some
color changes (caused by ‘palette swapping’) when switching between
applications.
• Microsoft mouse or compatible pointing device.
• Access to the Internet, either a dial-up account with an Internet Service
Provider (ISP) or a constant connection through a network.
• Sound card (not required, but you’ll need this to hear the sound for the
Guard Dog video).
• Windows 95 Web browser (also called a 32-bit browser).
Some Help features—McAfee Software on the Web, Guard Dog on the
Web, FAQs, and Report a problem—require you to connect to the McAfee
Software Web site with a Web browser (software that allows you to view
documents and download files from the World Wide Web). To use all the
online support features, the browser must be Microsoft®Internet Explorer,
Netscape Navigator™, or America Online v3.0 (or later) for Windows 95.

Installing Guard Dog™
8 McAfee Guard Dog
NOTE: America Online users need AOL’s 32-bit Winsock to use
Guard Dog. To upgrade from a 16-bit Winsock, contact America
Online.
Installing Guard Dog
After closing all open programs, you are ready to install Guard Dog on your
PC. Installation should go smoothly, however, if you do have difficulties, see
“Troubleshooting installation problems” on page 9.
To install Guard Dog
1. Close all open programs.
2. Insert the Guard Dog CD in the CD-ROM drive.
3. In the Guard Dog Setup screen, click Install Guard Dog.
NOTE: If the setup screen doesn’t start automatically when you
close your CD-ROM drive, click Start on the Windows taskbar, click
Run, then typed:\setup. If D is not the drive letter of your CD-ROM
drive, substitute the correct drive letter.
4. Read the text in the Welcome to Guard Dog screen, then click Next to
display the Software License Agreement.
5. After you read the license agreement, click Yes to continue.
6. In the Choose Destination Location window, do one of the following:
• To install the software into the default location C:\Program
Files\Guard Dog, click Next>.
• To install the files in an alternate location, click Browse, locate the
appropriate directory, and then click OK. Click Next> to copy the
Guard Dog files to your hard drive.
7. After the Guard Dog files are copied to your PC, you are asked if you
want to register Guard Dog over the Internet. To register, click Yes.
The McAfee Software Online Registration wizard steps you through the
registration process. Onlineregistration is optional. If you donot register
Guard Dog during installation, you can do so later from the Start menu
by choosing Register Guard Dog from the Guard Dog menu.

User’s Guide 9
Installing Guard Dog™
8. After registration, you are asked if you want to install a limited
subscription version of McAfee Software Oil Change™. To use Guard
Dog’s Update feature, you must have Oil Change installed. Do one of the
following:
• Click Yes to install Oil Change (with a limited subscription).
• Click No to install Oil Change later from the Guard Dog CD. For
more information, see “Installing other software from the Guard
Dog CD” on page 11.
9. The final installation screen notifies you that the installation is complete
and lets you choose to view the Guard Dog ReadMe file and start Guard
Dog. (You should read the ReadMe file, as it contains information that
isn’t included in this manual.) By default, these options are selected. To
disable either option, clear its check box. Click Finish.
10. The Readme file and a message that asks permission to restart your PC
appears. Do the following:
• Click the Readme window to read the file. Close the window when
you are finished.
• Click Yes in the message box to restart your PC. Guard Dog can’t
begin monitoring your PC until you do so.
After you restart your computer, Guard Dog opens automatically,
plays its introductory video, and then starts its interview. For more
information, see “Viewing the Guard Dog video” on page 13 and
“Using the Guard Dog interview” on page 13.
Troubleshooting installation problems
A failed installation can cause software problems that are difficult to track
down. The major causes of installation failure are:
• Hard drive errors
• Temporary files that conflict with the installation
• Attempting to install while other software is running
Follow the procedure outlined below to minimize the affect that these
common conditions may have on your installation.
Step 1: Clean up your hard drive
Run the Windows 95 hard drive utilities, ScanDisk and Disk Defragmenter to
identify and fix any errors on your hard drive:

Installing Guard Dog™
10 McAfee Guard Dog
1. Click Start on the Windows taskbar, point to Programs,then Accessories,
then System Tools, and click ScanDisk.
2. In the ScanDisk window, select Standard and Automatically fix errors
(these are the default settings).
3. Click Advanced. In the Advanced Settings dialog box, make sure the
following settings are selected:
• Only if errors found
•Replacelog
• Delete
•Free
4. Ignore the other options, and click OK. Click Start. ScanDisk begins
scanning your drive forerrors. Depending onthe size of your hard drive,
ScanDisk may take several minutes to complete its job.
5. When ScanDisk is finished, close ScanDisk.
6. Click Start on the Windows taskbar, point to Programs,then Accessories,
then System Tools, and click Disk Defragmenter.
7. Click OK to start Disk Defragmenter. Depending on the speed of your
computer and the size of your drive, this may take several minutes to
complete.
8. Close Disk Defragmenter when it has finished defragmenting your disk.
Step 2: Remove temporary files
Delete the contents of the Windows Temp folder:
1. Double-click the My Computer icon on your desktop. The My Computer
window opens. Double-click the C: drive. You are now viewing the
contents of your hard drive.
2. Double-click the Windows folder.
3. In the Windows folder, double-click the Temp folder.
4. In the menu, click Edit, then click Select All. All of the items in your Temp
folder are now selected.
5. Press the Delete key on your keyboard to delete the files. If Windows
asks about deleting files, click Yes.
6. In the Windows taskbar, click Start, then click Shut Down.