INTRODUCTION

The CompTIA Network+ (2009 Edition) certification is an internationally recognized validation of the technical knowledge required of foundation-level IT network practitioners.

The CompTIA Network+ (2009 Edition) certification ensures that the successful candidate has the important knowledge and skills necessary to manage, maintain, troubleshoot, install, operate and configure basic network infrastructure, describe networking technologies, basic design principles,
and adhere to wiring standards and use testing tools.

The skills and knowledge measured by this examination were derived from an industry-wide job task analysis and validated through an industry-wide global survey in Q2 2008. The results of this survey were used in weighing the domains and ensuring that the weighting is representative of the relative importance of the content.

It is recommended for CompTIA Network+ (2009 Edition) candidates to have the following:
• CompTIA A+ certification or equivalent knowledge, though CompTIA A+ certification is
not required.
• Have at least 9 to 12 months of work experience in IT networking.

The table below lists the domains measured by this examination and the extent to which they are represented. CompTIA Network+ (2009 Edition) exams are based on these objectives.

Domain % of Examination
1.0 Network Technologies 20%
2.0 Network Media and Topologies 20%
3.0 Network Devices 17%
4.0 Network Management 20%
5.0 Network Tools 12%
6.0 Network Security 11%
Total 100%

Code:

http://www.4shared.com/file/108711186/48d0c153/net_2009.html

Check-In
Part I: Systems Security
Chapter 1. System Security Threats and Risks
Objective 1.01 Differentiate Among Various Systems Security Threats
Object 1.02 Explain System Hardware and Peripheral Risks
Chapter 2. System Software Security
Objective 2.01 Implement OS Hardening Practices
Objective 2.02 Establish Application Security
Objective 2.03 Implement Security Applications
Objective 2.04 Explain Virtualization Technology
Part II: Network Infrastructure
Chapter 3. Network Security
Objective 3.01 Network Ports and Protocol Threats
Objective 3.02 Network Design Elements and Components
Objective 3.03 Network Device Vulnerabilities
Objective 3.04 Transmission Media Vulnerabilities
Chapter 4. Network Security Tools and Wireless Security
Objective 4.01 Determine and Apply Appropriate Network Security Tools
Objective 4.02 Explain Wireless Networking Vulnerabilities and Implement Mitigations
Part III: Access Control
Chapter 5. Access Control
Objective 5.01 Identify and Apply Access Control Methods
Objective 5.02 Explain Common Access Control Models
Objective 5.03 Organize Appropriate Security Groups, Roles, Rights, and Privileges
Objective 5.04 Apply File and Print Security Controls
Objective 5.05 Compare and Implement Logical Access Control Methods
Chapter 6. Authentication
Objective 6.01 Explain Identification and Authentication
Objective 6.02 Identify Authentication Models
Objective 6.03 Deploy Authentication Models
Objective 6.04 Apply Physical Access Security
Part IV: Assessments and Audits
Chapter 7. Risk and Vulnerability Assessment
Objective 7.01 Conduct Risk Assessments
Objective 7.02 Perform Vulnerability Assessments
Objective 7.03 Penetration Testing and Vulnerability
Chapter 8. Monitoring and Auditing
Objective 8.01 Monitor and Detect Security-Related Anomalies
Objective 8.02 Compare Monitoring Methodologies
Objective 8.03 Execute Proper Logging Procedures
Objective 8.04 Conduct System Audits
Part V: Cryptography
Chapter 9. Cryptography and Encryption Overview
Objective 9.01 Explain General Cryptography Concepts
Objective 9.02 Explain Basic Hashing Concepts
Objective 9.03 Explain Basic Encryption Concepts
Objective 9.04 Explain and Implement Protocols
Chapter 10. Public Key Cryptography
Objective 10.01 Public Key Cryptography
Objective 10.02 Certificate Management
Part VI: Organizational Security
Chapter 11. Redundancy and Environmental Planning
Objective 11.01 Explain Redundancy Planning
Objective 11.02 Explain Environmental Controls
Chapter 12. Disaster Recovery and Incident Response
Objective 12.01 Implement Disaster Recovery Procedures
Objective 12.02 Execute Incident Response Procedures
Chapter 13. Organizational Policies and Procedures
Objective 13.01 Explain Legislation and Organizational Policies
Objective 13.02 Reduce the Risks of Social Engineering
Appendix A: About the CD-ROM
Appendix B: Career Flight Path
Index
Biographical note

T.J. Samuelle, CompTIA Network+, CompTIA Server+, CompTIA Security+, is an IT consultant and author of several computer books on CompTIA certifications. He served as a subject matter expert for CompTIA on the Network+ and Security+ exams.

Get complete coverage of all the material included on the CompTIA Security+ exam inside this fully up-to-date, comprehensive resource. Written by network security experts, this authoritative exam guide features learning objectives at the beginning of each chapter, exam tips, practice questions, and in-depth explanations. Designed to help you pass the CompTIA Security+ exam with ease, this definitive volume also serves as an essential on-the-job reference. Get full details on all exam topics, including how to:

Combat viruses, Trojan horses, spyware, logic bombs, and worms
Defend against DDoS, spoofing, replay, TCP/IP hijacking, and other attacks
Apply best practices for access control methods
Implement authentication using Kerberos, CHAP, biometrics, and other methods
Use cryptography and PKI
Secure remote access, wireless, and virtual private networks (VPNs)
Harden networks, operating systems, and applications
Manage incident response and follow forensic procedures
The CD-ROM features

One full practice exam
Complete electronic book

About the Author
Greg White is an Associate Professor in the Department of Computer Science at the University of Texas at San Antonio. He is the author of the first edition of this book.

Wm. Arthur Conklin, CompTIA Security+, is an Assistant Professor in the Information and Logistics Technology department at the University of Houston.

.
Product Details
Hardcover: 672 pages
Publisher: McGraw-Hill Osborne Media; 2 edition (December 19, 2008)
A CompTIA Security+ Exam Guide and An On-the-Job Reference–All-in-One
Get complete coverage of all the material included on the CompTIA Security+ exam inside this fully up-to-date, comprehensive resource. Written by network security experts, this authoritative exam guide features learning objectives at the beginning of each chapter, exam tips, practice questions, and in-depth explanations. Designed to help you pass the CompTIA Security+ exam with ease, this definitive volume also serves as an essential on-the-job reference. Get full details on all exam topics, including how to:
Combat viruses, Trojan horses, spyware, logic bombs, and worms
Defend against DDoS, spoofing, replay, TCP/IP hijacking, and other attacks
Apply best practices for access control methods
Implement authentication using Kerberos, CHAP, biometrics, and other methods
Use cryptography and PKI
Secure remote access, wireless, and virtual private networks (VPNs)
Harden networks, operating systems, and applications
Manage incident response and follow forensic procedures
The CD-ROM features
One full practice exam
Complete electronic book
Table of contents

We, the authors of CompTIA Security+ Certification All-in-One Exam Guide, have many 

individuals who we need to acknowledge—individuals without whom this effort would 

not have been successful.

The list needs to start with those folks at McGraw-Hill who worked tirelessly with 

the project’s multiple authors and contributors and led us successfully through the 

minefield that is a book schedule and who took our rough chapters and drawings and 

turned them into a final, professional product we can be proud of. We thank all the 

good people from the Acquisitions team, Tim Green, Jennifer Housh, and Carly Staple-

ton; from the Editorial Services team, Jody McKenzie; and from the Illustration and 

Production team, George Anderson, Peter Hancik, and Lyssa Wald. We also thank the 

technical editor Glen Clarke; the project editor, LeeAnn Pickrell; the copyeditor, Lisa 

Theobald; the proofreader, Susie Elkind; and the indexer, Karin Arrigoni for all their 

attention to detail that made this a finer work after they finished with it.

We also need to acknowledge our current employers who, to our great delight, have 

seen fit to pay us to work in a career field that we all find exciting and rewarding. There 

is never a dull moment in security because it is constantly changing.

We would like to thank Art Conklin for herding the cats on this one.

Finally, we would each like to individually thank those people who—on a personal 

basis—have provided the core support for us individually. Without these special people 

in our lives, none of us could have put this work together.

I would like to thank my wife, Charlan, for the tremendous support she has always 

given me. It doesn’t matter how many times I have sworn that I’ll never get involved 

with another book project only to return within months to yet another one; through it 

all, she has remained supportive.

I would also like to publicly thank the United States Air Force, which provided me 

numerous opportunities since 1986 to learn more about security than I ever knew existed.

To whoever it was who decided to send me as a young captain—fresh from complet-

ing my master’s degree in artificial intelligence—to my first assignment in computer secu-

rity: thank you, it has been a great adventure!

—Gregory B. White, Ph.D.

To Susan, my muse and love, for all the time you suffered as I work on books.

—Art Conklin

Special thanks to Josie for all her support.

—Chuck Cothren

Computer security is becoming increasingly important today as the number of security 

incidents steadily climbs. Many corporations now spend significant portions of their 

budget on security hardware, software, services, and personnel. They are spending this 

money not because it increases sales or enhances the product they provide, but because 

of the possible consequences should they not take protective actions.

Why Focus on Security?

Security is not something that we want to have to pay for; it would be nice if we didn’t 

have to worry about protecting our data from disclosure, modification, or destruction 

from unauthorized individuals, but that is not the environment we find ourselves in 

today. Instead, we have seen the cost of recovering from security incidents steadily rise 

along with the number of incidents themselves. Since September 11, 2001, this has 

taken on an even greater sense of urgency as we now face securing our systems not 

just from attack by disgruntled employees, juvenile hackers, organized crime, or com-

petitors; we now also have to consider the possibility of attacks on our systems from 

terrorist organizations. If nothing else, the events of September 11, 2001, showed that 

anybody is a potential target. You do not have to be part of the government or a govern-

ment contractor; being an American is sufficient reason to make you a target to some, 

and with the global nature of the Internet, collateral damage from cyber attacks on one 

organization could have a worldwide impact.

A Growing Need for Security Specialists

In order to protect our computer systems and networks, we will need a significant num-

ber of new security professionals trained in the many aspects of computer and network 

security. This is not an easy task as the systems connected to the Internet become in-

creasingly complex with software whose lines of codes number in the millions. Under-

standing why this is such a difficult problem to solve is not hard if you consider just 

how many errors might be present in a piece of software that is several million lines 

long. When you add the additional factor of how fast software is being developed—

from necessity as the market is constantly changing—understanding how errors occur is easy.

Not every “bug” in the software will result in a security hole, but it doesn’t take 

many to have a drastic affect on the Internet community. We can’t just blame the ven-

dors for this situation because they are reacting to the demands of government and 

industry. Most vendors are fairly adept at developing patches for flaws found in their 

software, and patches are constantly being issued to protect systems from bugs that may 

introduce security problems. This introduces a whole new problem for managers and 

administrators—patch management. How important this has become is easily illus-

trated by how many of the most recent security events have occurred as a result of a 

security bug that was discovered months prior to the security incident, and for which a 

patch has been available, but for which the community has not correctly installed the 

patch, thus making the incident possible. One of the reasons this happens is that many 

of the individuals responsible for installing the patches are not trained to understand 

the security implications surrounding the hole or the ramifications of not installing the 

patch. Many of these individuals simply lack the necessary training.

Because of the need for an increasing number of security professionals who are 

trained to some minimum level of understanding, certifications such as the Security+ 

have been developed. Prospective employers want to know that the individual they are 

considering hiring knows what to do in terms of security. The prospective employee, in 

turn, wants to have a way to demonstrate his or her level of understanding, which can 

enhance the candidate’s chances of being hired. The community as a whole simply 

wants more trained security professionals.

Preparing Yourself for the Security+ Exam

CompTIA Security+ Certification All-in-One Exam Guide is designed to help prepare you 

to take the CompTIA Security+ certification exam. When you pass it, you will demon-

strate you have that basic understanding of security that employers are looking for. 

Passing this certification exam will not be an easy task, for you will need to learn many 

things to acquire that basic understanding of computer and network security.

How This Book Is Organized

The book is divided into sections and chapters to correspond with the objectives of the 

exam itself. Some of the chapters are more technical than others—reflecting the nature 

of the security environment where you will be forced to deal with not only technical 

details but also other issues such as security policies and procedures as well as training 

and education. Although many individuals involved in computer and network security 

have advanced degrees in math, computer science, information systems, or computer or 

electrical engineering, you do not need this technical background to address security 

effectively in your organization. You do not need to develop your own cryptographic 

algorithm; for example, you simply need to be able to understand how cryptography is 

used along with its strengths and weaknesses. As you progress in your studies, you will 

learn that many security problems are caused by the human element. The best technol-

ogy in the world still ends up being placed in an environment where humans have the 

opportunity to foul things up—and all too often do.

xxxi

Part I: Security Concepts  The book begins with an introduction of some of the 

basic elements of security.

Part II: Cryptography and Applications  Cryptography is an important part 

of security, and this part covers this topic in detail. The purpose is not to make cryptog-

raphers out of readers but to instead provide a basic understanding of how cryptogra-

phy works and what goes into a basic cryptographic scheme. An important subject in 

cryptography, and one that is essential for the reader to understand, is the creation of 

public key infrastructures, and this topic is covered as well.

Part III: Security in the Infrastructure  The next part concerns infrastructure 

issues. In this case, we are not referring to the critical infrastructures identified by the 

White House several years ago (identifying sectors such as telecommunications, bank-

ing and finance, oil and gas, and so forth) but instead the various components that 

form the backbone of an organization’s security structure.

Part IV: Security in Transmissions  This part discusses communications secu-

rity. This is an important aspect of security because, for years now, we have connected 

our computers together into a vast array of networks. Various protocols in use today 

and that the security practitioner needs to be aware of are discussed in this part.

Part V: Operational Security  This part addresses operational and organiza-

tional issues. This is where we depart from a discussion of technology again and will 

instead discuss how security is accomplished in an organization. Because we know that 

we will not be absolutely successful in our security efforts—attackers are always finding

new holes and ways around our security defenses—one of the most important topics 

we will address is the subject of security incident response and recovery. Also included 

is a discussion of change management (addressing the subject we alluded to earlier 

when addressing the problems with patch management), security awareness and train-

ing, incident response, and forensics.

Part VI: Appendixes  There are two appendixes in CompTIA Security+ Certification 

All-in-One Exam Guide. Appendix A explains how best to use the CD-ROM included 

with this book, and Appendix B provides an additional in-depth explanation of the OSI 

model and Internet protocols, should this information be new to you.

Glossary  Located just before the Index, you will find a useful glossary of security 

terminology, including many related acronyms and their meaning. We hope that you 

use the Glossary frequently and find it to be a useful study aid as you work your way 

through the various topics in this exam guide.

xxxii

Special Features of the 

All-in-One Certification Series

To make our exam guides more useful and a pleasure to read, we have designed the All-

in-One Certification series to include several conventions.

Icons

To alert you to an important bit of advice, a shortcut, or a pitfall, you’ll occasionally see 

Notes, Tips, Cautions, and Exam Tips peppered throughout the text.

NOTE NOTE  Notes offer nuggets of especially helpful stuff, background 

explanations, and information, and terms are defined occasionally.

TIP TIP Tips provide suggestions and nuances to help you learn to finesse your 

job. Take a tip from us and read the Tips carefully.

CAUTION CAUTION  When you see a Caution, pay special attention. Cautions appear 

when you have to make a crucial choice or when you are about to undertake 

something that may have ramifications you might not immediately anticipate. 

Read them now so you don’t have regrets later.

EXAM TIP EXAM TIP  Exam Tips give you special advice or may provide information 

specifically related to preparing for the exam itself.

End-of-Chapter Reviews and Chapter Tests

An important part of this book comes at the end of each chapter where you will find a 

brief review of the high points along with a series of questions followed by the answers 

to those questions. Each question is in multiple-choice format. The answers provided 

also include a small discussion explaining why the correct answer actually is the correct 

answer.

The questions are provided as a study aid to you, the reader and prospective Secu-

rity+ exam taker. We obviously can’t guarantee that if you answer all of our questions 

correctly you will absolutely pass the certification exam. Instead, what we can guarantee 

is that the questions will provide you with an idea about how ready you are for the exam.

xxxiii

The CD-ROM

CompTIA Security+ Certification All-in-One Exam Guide  also provides you with a CD-

ROM of even more test questions and their answers to help you prepare for the certifi-

cation exam. Read more about the companion CD-ROM in Appendix A.

Onward and Upward

At this point, we hope that you are now excited about the topic of security, even if you 

weren’t in the first place. We wish you luck in your endeavors and welcome you to the 

exciting field of computer and network security.

Part I: Security Concepts
Chapter 1. General Security Concepts
Chapter 2. Operational Organizational Security
Chapter 3. Legal Issues, Privacy, and Ethics
Part II: Cryptography and Applications
Chapter 4. Cryptography
Chapter 5. Public Key Infrastructure
Chapter 6. Standards and Protocols
Part III: Security in the Infrastructure
Chapter 7. Physical Security
Chapter 8. Infrastructure Security
Chapter 9. Authentication and Remote Access
Chapter 10. Wireless Security
Part IV: Security in Transmissions
Chapter 11. Intrusion Detection Systems
Chapter 12. Security Baselines
Chapter 13. Types of Attacks and Malicious Software
Chapter 14. E-Mail and Instant Messaging
Chapter 15. Web Components
Part V: Operational Security
Chapter 16. Disaster Recovery and Business Continuity
Chapter 17. Risk Management
Chapter 18. Change Management
Chapter 19. Privilege Management
Chapter 20. Computer Forensics
Part VI: Appendixes
Appendix A. About the CD
Appendix B. OSI Model and Internet Protocols
Glossary
Index
Biographical note

Greg White is an Associate Professor in the Department of Computer Science at the University of Texas at San Antonio. He is the author of the first edition of this book.Wm. Arthur Conklin, CompTIA Security+, is an Assistant Professor in the Information and Logistics Technology department at the University of Houston.

CompTIA Security+ All-in-One Exam Guide, Second Edition
672 pages | McGraw-Hill Osborne Media; 2 edition (December 19, 2008) | 0071601279 | PDF | 7 Mb

A CompTIA Security+ Exam Guide and An On-the-Job Reference–All-in-One

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From the Back Cover
Deluxe Edition of our top-selling CompTIA Security+ Study Guide
Security is unlike any other topic in computing. To begin with,
the word is so encompassing that it is impossible to know what
you mean just by using it. When you talk about security, do

you mean physical security of servers and workstations and protecting them from those who
might try to steal them or from damage that might occur if the side of the building collapses?
Or do you mean the security of data and protecting it from viruses and worms or from hack-
ers and miscreants who have suddenly targeted you and have no other purpose in life than
to keep you up at night? Or maybe security to you is the comfort that comes in knowing that
you can restore iles if a user accidentally deletes them.
The irst problem with security is that it is next to impossible for everyone to agree on what
it means because it can include all of these items. The next problem with security is that we
don’t really mean that we want things to be completely secured. If you wanted the customer
list ile to truly be secure, you would never put it on the server and make it available. It is
on the server because you need to access it and so do 30 other people. In this sense, security
means that only 30 people can get to it and not anyone outside of the select 30.
The next problem is that while everyone wants security, no one wants to be inconve-
nienced by it. To use an analogy, few are the travelers who do not feel safer by watching
airport personnel frisk and pat down all who head to the terminal—they just don’t want
it to happen to them. This is true in computing as well; we all want to make sure data is
accessed only by those who truly should be working with it, but we don’t want to have to
enter 12-digit passwords and submit to retinal scans.
As a computer security professional, you have to understand all of these concerns.
You have to know that a great deal is expected of you but few users want to be hassled or
inconvenienced by the measures you must put in place. You have a primary responsibility
to protect and safeguard the information your organization uses. Many times that means
educating your users and making certain they understand the “why” behind what is being
implemented.
Security is a high-growth area in the computer industry, and it has been for several
years now. The need for qualiied people is increasing rapidly, as a search of job boards
will quickly illustrate. Your pursuit of the Security+ certiicate is a good irst step in this
process. Security+ is not the only security certiication on the market, and it is not even
the only entry-level certiication available to you. It is, however, the only one to truly focus
on the topics that most think of when security comes to mind. To pass it, you must have a
broad knowledge of all the different types of security mentioned in the irst paragraph.
In this chapter, I’ll discuss the various aspects of computer security as they relate to your
job. I will introduce the basics of computer security and provide several models you can use
to understand the risks your organization faces. Not stopping there, I will also present steps
you must take in order to minimize those risks.
Understanding Information Security
Information security narrows down the deinition of security. The term information security
covers a wide array of activities in an organization. It includes not only the products, but also
the processes used to prevent unauthorized access to, modiication of, and deletion of infor-
mation. This area also involves protecting resources by preventing them from being disrupted
by situations or attacks that may be largely beyond the control of the person responsible for
information security.
From the perspective of a computer professional, you’re dealing with issues that are
much bigger than protecting computer systems from viruses. You’re also protecting an
organization’s most valuable assets from people who are highly motivated to misuse those
assets. Fortunately, most of them are outsiders who are trying to break in, but some of
these people may already be inside your organization and discontented in their present
situation. Not only do you have to keep outsiders out, but you have to be prepared for the
accountant who has legitimate access to iles and wants to strike out because he did not get
as good a performance review as he thought he should.
Needless to say, this job isn’t getting any easier. Weaknesses and vulnerabilities in most
commercial systems are well known and documented, and more become known each day.
Your adversaries can use search engines to ind vulnerabilities on virtually any product or
operating system. To learn how to exploit the most likely weaknesses that exist in a system,
they can buy books on computer hacking, join newsgroups on the Internet, and access web-
sites that offer explicit details. Some are doing it for proit or pleasure, but many are doing
it just for the sheer thrill of it. There have been many glamorized characters on television
and in movies who break into computer systems and do things they should not. When was
the last time you saw a glamorized security administrator on such a show? If you make
things look fun and exciting, there is some part of the audience that will attempt it.
Compounding matters, in many situations you’ll ind yourself constantly dealing with
inherent weaknesses in the products you use and depend on. You can’t count on the security
within an application to be lawless from the moment it is released until the next version comes
out three years later. The following sections discuss in detail the aspects you must consider in
order to have a reasonable chance of securing your information, networks, and computers.
Make sure you understand that I’m always talking about reasonable.
One of the irst things you must develop as a security administrator is a bit of paranoia.
It’s important to remember that you’re dealing with both system vulnerabilities and human
vulnerabilities—although they aren’t the same, they both affect the organization signiicantly.
You must assume that you’re under attack right now, even as you read this book.
Information security includes a number of topics of primary focus, each addressing differ-
ent parts of computer security. An effective computer security plan and process must evaluate
the risks and create strategies and methods to address them. The following sections focus on
three such areas:
Physical security Û N
Operational security Û N
Management and policies Û N

Prepare for CompTIA’s new Security+ exam (SY0-201) with this Deluxe Edition of Sybex’s popular CompTIA Security+ Study Guide. In addition to comprehensive coverage of exam essentials, the Deluxe Edition includes over one hundred additional pages of hands-on exercises, four practice exams, a list of useful acronyms any security professional should be familiar with, and a valuable Security Administrator’s Troubleshooting Guide. Start your Security+ preparation today with:

Full coverage of all exam objectives in a systematic approach, so you can be confident you’re getting the instruction you need for the exam

More than one hundred extra pages of practical, hands-on exercises to reinforce critical skills

A valuable Security Administrator’s Troubleshooting Guide you can use in the field

Real-world scenarios that put what you’ve learned in the context of actual job roles

Four complete practice exams as well as challenging review questions to prepare you for exam day

Exam Essentials, a key feature in each chapter that identifies critical areas you must become proficient in before taking the exam

A handy tear card that maps every official exam objective to the corresponding chapter in the book, so you can track your exam prep objective by objective

Look inside for complete coverage of all exam objectives.

About the Author
Emmett Dulaney is an assistant professor at Anderson University. He has written several certification books on Windows, Security, IT project management, and UNIX, and is coauthor of two of Sybex’s leading certification titles: CompTIA A+ Complete Study Guide and CompTIA Security+ Study Guide, Third Edition. He is also a well-known certification columnist for Redmond magazine and CertCities.com
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