...Ping Sweeps and Port Scans Ping sweeps and ports scans are a common ways for hackers to probe a network and attempt to break into it. Although network probes are technically not intrusions themselves, they should not be taken lightly—they may lead to actual intrusions in the future. In the information that follows, I will provide a standard definition of a ping sweep and port scan, the possible uses of the two, and the prevention methods which are in place in our company to combat ping sweeps and port scans of our network by would be attackers. According to Whatis.com, a ping sweep is a basic networking scanning technique used to determine which range of IP addresses are mapped to active computers. During a ping sweep, Internet Control Message Protocol (ICMP) Echo requests are sent to many computers, which determines which are active and which are not ("What is ping sweep (ICMP sweep)? - Definition from Whatis.com," n.d.). If a given address is active, it will return an ICMP Echo reply and the attacker will then focus on those machines. Hackers are not the only ones who perform ping sweeps. I use ping sweeps to find out which machines are active on the network for diagnostics reasons and our ISP (Internet Service Provider) uses automated ping operations to monitor their connection. Disabling the ICMP protocol is one option to prevent ping sweeps; however, doing so may cause problems with our ISP leading them to think that the connection is not functioning because their...
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...Exam : 312-50 Title : Ethical Hacker Certified Ver : 02-23-2009 312-50 QUESTION 1: What is the essential difference between an 'Ethical Hacker' and a 'Cracker'? A. The ethical hacker does not use the same techniques or skills as a cracker. B. The ethical hacker does it strictly for financial motives unlike a cracker. C. The ethical hacker has authorization from the owner of the target. D. The ethical hacker is just a cracker who is getting paid. Answer: C Explanation: The ethical hacker uses the same techniques and skills as a cracker and the motive is to find the security breaches before a cracker does. There is nothing that says that a cracker does not get paid for the work he does, a ethical hacker has the owners authorization and will get paid even if he does not succeed to penetrate the target. QUESTION 2: What does the term "Ethical Hacking" mean? A. Someone who is hacking for ethical reasons. B. Someone who is using his/her skills for ethical reasons. C. Someone who is using his/her skills for defensive purposes. D. Someone who is using his/her skills for offensive purposes. Answer: C Explanation: Ethical hacking is only about defending your self or your employer against malicious persons by using the same techniques and skills. QUESTION 3: Who is an Ethical Hacker? A. A person whohacksfor ethical reasons B. A person whohacksfor an ethical cause C. A person whohacksfor defensive purposes D. A person whohacksfor offensive purposes Answer:...
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...Threats, and Attacks Upon completion of this chapter, you should be able to answer the following questions: ■ ■ What are the basics concepts of network security? What are some common network security vulnerabilities and threats? ■ ■ What are security attacks? What is the process of vulnerability analysis? Key Terms This chapter uses the following key terms. You can find the definitions in the glossary at the end of the book. Unstructured threats Structured threats External threats Internal threats Hacker Cracker Phreaker Spammer Phisher page 21 page 21 page 21 page 21 page 21 page 20 page 20 page 20 page 21 White hat Black hat page 21 page 21 page 28 page 28 Dictionary cracking Brute-force computation Trust exploitation Port redirection page 28 page 29 page 30 Man-in-the-middle attack Social engineering Phishing page 30 page 30 2 Network Security 1 and 2 Companion Guide The Internet continues to grow exponentially. Personal, government, and business applications continue to multiply on the Internet, with immediate benefits to end users. However, these network-based applications and services can pose security risks to individuals and to the information resources of companies and governments. Information is an asset that must be protected. Without adequate network security, many individuals, businesses, and governments risk losing that asset. Network security is the process by which digital information assets are protected. The goals of network...
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...This page was intentionally left blank This page was intentionally left blank Hands-On Ethical Hacking and Network Defense Second Edition Michael T. Simpson, Kent Backman, and James E. Corley ———————————————————————— Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States Copyright 2010 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. This is an electronic version of the print textbook. Due to electronic rights restrictions, some third party content may be suppressed. Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. The publisher reserves the right to remove content from this title at any time if subsequent rights restrictions require it. For valuable information on pricing, previous editions, changes to current editions, and alternate formats, please visit www.cengage.com/highered to search by ISBN#, author, title, or keyword for materials in your areas of interest. Copyright 2010 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated...
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...Penetration testing Penetration testing A Hands-On Introduction to Hacking by Georgia Weidman San Francisco Penetration testing. Copyright © 2014 by Georgia Weidman. All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher. Printed in USA First printing 18 17 16 15 14 123456789 ISBN-10: 1-59327-564-1 ISBN-13: 978-1-59327-564-8 Publisher: William Pollock Production Editor: Alison Law Cover Illustration: Mertsaloff/Shutterstock Interior Design: Octopod Studios Developmental Editor: William Pollock Technical Reviewer: Jason Oliver Copyeditor: Pamela Hunt Compositor: Susan Glinert Stevens Proofreader: James Fraleigh Indexer: Nancy Guenther For information on distribution, translations, or bulk sales, please contact No Starch Press, Inc. directly: No Starch Press, Inc. 245 8th Street, San Francisco, CA 94103 phone: 415.863.9900; fax: 415.863.9950; info@nostarch.com; www.nostarch.com Library of Congress Cataloging-in-Publication Data Weidman, Georgia. Penetration testing : a hands-on introduction to hacking / Georgia Weidman. pages cm Includes index. ISBN 978-1-59327-564-8 (paperback) -- ISBN 1-59327-564-1 (paperback) 1. Penetration testing (Computer security) 2. Kali Linux. 3. Computer hackers. QA76.9.A25W4258 2014 005.8'092--dc23 2014001066...
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...CMIT 321 Final Exam Click Link Below To Buy: http://hwaid.com/shop/cmit-321-final-exam/ Written 2016 Attempt Score: 121 / 125 - 96.8 % Final Exam Question 1 1 / 1 point __________ is the exploitation of an organization's telephone, dial, and private branch exchange (PBX) system to infiltrate the internal network in order to abuse computing resources. a. War driving b. Line dialing c. PBX driving d. War dialing View Feedback Question 2 1 / 1 point __________ cryptography is the most common method on the Internet for authenticating a message sender or encrypting a message. a. Symmetric b. Hash-based c. Private-key d. Public-key View Feedback Question 3 1 / 1 point __________ is a lightweight Knoppix version cut to 50 MB for a business-card-sized CD. a. Gnoppix b. GeeXboX c. Morphix d. Damn Small Linux View Feedback Question 4 1 / 1 point The __________ utility tests the integrity of an ODBC data source. a. odbcping b. ASPRunner c. FlexTracer d. DbEncrypt View Feedback Question 5 1 / 1 point In the TCP/IP stack, the __________ layer is where applications and protocols, such as HTTP and Telnet, operate. a. Internet b. network c. transport d. application View Feedback Question 6 1 / 1 point Attackers can use a simple test to find out if an application is vulnerable to an OLE DB error. They can fill in the username and password...
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...History 2. What Is an Ethical Hacker? 3. Summary 4. Exam Essentials 5. Review Questions 4. Chapter 2: System Fundamentals 1. Exploring Network Topologies 2. Working with the Open Systems Interconnection Model 3. Dissecting the TCP/IP Suite 4. IP Subnetting 5. Hexadecimal vs. Binary 6. Exploring TCP/IP Ports 7. Understanding Network Devices 8. Working with MAC Addresses 9. Intrusion Prevention and Intrusion Detection Systems 10. Network Security 11. Knowing Operating Systems 12. Backups and Archiving 13. Summary 14. Exam Essentials 15. Review Questions 5. Chapter 3: Cryptography 2 1. Cryptography: Early Applications and Examples 2. Cryptography in Action 3. Understanding Hashing 4. Issues with Cryptography 5. Applications of Cryptography 6. Summary 7. Exam Essentials 8. Review Questions 6. Chapter 4: Footprinting and Reconnaissance 1. Understanding the Steps of Ethical Hacking 2. What Is Footprinting? 3. Terminology in Footprinting 4. Threats Introduced by Footprinting 5. The Footprinting Process 6. Summary 7. Exam Essentials 8. Review Questions 7. Chapter 5: Scanning Networks 1. What Is Network Scanning? 2. Checking for Live Systems 3. Checking for Open Ports 4. Types of Scans 5. OS Fingerprinting 6. Banner Grabbing 7. Countermeasures 8. Vulnerability Scanning 9. Drawing Network Diagrams 10. Using Proxies 11. Summary 12. Exam Essentials 13. Review Questions 8. Chapter 6: Enumeration of Services 3 1. A Quick Review 2. What Is Enumeration? 3. Windows Basics 4. Enumeration...
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...The Critical Security Controls for Effective Cyber Defense Version 5.0 1 Introduction ..................................................................................................................................................................... 3 CSC 1: Inventory of Authorized and Unauthorized Devices ............................................................................ 8 CSC 2: Inventory of Authorized and Unauthorized Software ....................................................................... 14 CSC 3: Secure Configurations for Hardware and Software on Mobile Devices, Laptops, Workstations, and Servers ....................................................................................................................................... 19 CSC 4: Continuous Vulnerability Assessment and Remediation ................................................................. 27 CSC 5: Malware Defenses .......................................................................................................................................... 33 CSC 6: Application Software...
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...CompTIA Security+: Get Certified Get Ahead SY0-401 Study Guide Darril Gibson Dedication To my wife, who even after 22 years of marriage continues to remind me how wonderful life can be if you’re in a loving relationship. Thanks for sharing your life with me. Acknowledgments Books of this size and depth can’t be done by a single person, and I’m grateful for the many people who helped me put this book together. First, thanks to my wife. She has provided me immeasurable support throughout this project. The technical editor, Steve Johnson, provided some good feedback throughout the project. If you have the paperback copy of the book in your hand, you’re enjoying some excellent composite editing work done by Susan Veach. I’m extremely grateful for all the effort Karen Annett put into this project. She’s an awesome copy editor and proofer and the book is tremendously better due to all the work she’s put into it. While I certainly appreciate all the feedback everyone gave me, I want to stress that any technical errors that may have snuck into this book are entirely my fault and no reflection on anyone who helped. I always strive to identify and remove every error, but they still seem to sneak in. About the Author Darril Gibson is the CEO of YCDA, LLC (short for You Can Do Anything). He has contributed to more than 35 books as the sole author, a coauthor, or a technical editor. Darril regularly writes, consults, and teaches on a wide variety of technical...
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...* CCNA Routing & Switching 200-120 * Chapter 1 – Understanding Networks and their Building Blocks * 1-1 Introduction to Networks * 1-2 Networking Types * 1-3 OSI Reference Model * 1-4 TCP/IP Model * 1-5 Ethernet Technologies and Cabling * 1-6 Cisco 3 Layer Model * 1-7 Summary * Chapter 2 – IP Addressing and Subnets * 2-1 IP Addresses – Composition, Types and Classes * 2-2 Private and Public IP addresses * 2-3 Subnetting * 2-4 Variable Length Subnet Masks (VLSM) * 2-5 Route Summarization * 2-6 Troubleshooting IP Addressing * Chapter 3 Introduction to Cisco Routers, Switches and IOS * 3-1 Introduction to Cisco Routers, Switches, IOS & the Boot Process * 3-2 Using the Command-Line Interface (CLI) * 3-3 Basic Configuration of Router and Switches * 3-4 Configuring Router Interfaces * 3-5 Gathering Information and Verifying Configuration * 3-6 Configuring DNS & DHCP * 3-7 Saving, Erasing, Restoring and Backing up Configuration & IOS File * 3-8 Password Recovery on a Cisco Router * 3-9 Cisco Discovery Protocol (CDP) * 3-10 Using Telnet on IOS * 3-11 CCNA Lab #1 * Chapter 4 Introduction to IP Routing * 4-1 Understanding IP Routing * 4-2 Static, Default and Dynamic Routing * 4-3 Administrative Distance and Routing...
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...academic text books and courses of study in information security, computer forensics, disaster recovery, and end-user security. By repurposing the essential content of EC-Council’s world class professional certification programs to fit academic programs, the EC-Council | Press was formed. With 8 Full Series, comprised of 27 different books, the EC-Council | Press is set to revolutionize global information security programs and ultimately create a new breed of practitioners capable of combating this growing epidemic of cybercrime and the rising threat of cyber war. This Certification: C|EH – Certified Ethical Hacker Certified Ethical Hacker is a certification designed to immerse the learner in an interactive environment where they will learn how to scan, test, hack and secure information systems. Ideal candidates for the C|EH program are security professionals, site administrators, security officers, auditors or anyone who is concerned with the integrity of a network infrastructure. The goal of the Ethical Hacker is to help the organization take...
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...Securing Cisco Routers (SECR) Glossary A AAA ABEND Access Access attacks Authentication, Authorization, Accounting. Allows all facets of user security to be defined on a central server. Abnormal END. Abnormal termination of software. 1.) In dealing with network security it is an all-encompassing term that refers to unauthorized data manipulation, system access, or privileged escalation. An all-encompassing term that refers to unauthorized data manipulation, system access, or privileged escalation. Unauthorized data retrieval is simply reading, writing, copying, or moving files that are not intended to be accessible to the intruder. Limiting the flow of information from the resources of a system to only the authorized persons or systems in the network. See ACE. access control Access Control Entry access control list See ACL. access device access layer Access Method Hardware component used in your signaling controller system: access server or mux. The point at which local end users are allowed into the network. 1.) Generally, the way in which network devices access the network medium. 2.) Software within an SNA processor that controls the flow of information through a network. Defines access rights and privileges for the network users. The access policy should provide guidelines for connecting external networks, connecting devices to a network, and adding new software to systems. The remote computer system which connects a personal computer to the Internet. Access Virtual...
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...Arduino Cookbook Arduino Cookbook Michael Margolis Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo Arduino Cookbook by Michael Margolis Copyright © 2011 Michael Margolis and Nicholas Weldin. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://my.safaribooksonline.com). For more information, contact our corporate/institutional sales department: (800) 998-9938 or corporate@oreilly.com. Editors: Simon St. Laurent and Brian Jepson Production Editor: Teresa Elsey Copyeditor: Audrey Doyle Proofreader: Teresa Elsey Indexer: Lucie Haskins Cover Designer: Karen Montgomery Interior Designer: David Futato Illustrator: Robert Romano Printing History: March 2011: First Edition. Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc. Arduino Cookbook, the image of a toy rabbit, and related trade dress are trademarks of O’Reilly Media, Inc. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O’Reilly Media, Inc., was aware of a trademark claim, the designations have been printed in caps or initial caps. While every precaution...
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...2.8 Intrusion and Misuse Deterrence System (IMDS) 11 2.3 Demilitarized Zone (DMZ) 11 2.4 Computing Environment 11 2.4.1 Operating System (OS) Security 12 2.4.2 Host-based IDS 12 2.4.3 Content Security Checking 13 2.5 Application Security 13 2.5.1 World Wide Web (WWW) Applications 13 2.5.2 E-mail Systems 15 2.5.3 Mobile Code 15 2.5.4 Database Applications 17 2.5.5 Domain Name Service (DNS) 17 2.6 Personal Digital Assistants (PDAs) 18 3. VULNERABILITY ASSESSMENTS 21 4. INFORMATION ASSURANCE VULNERABILITY ALERT (IAVA) PROCESS 23 5. SOFTWARE DEVELOPMENT GUIDANCE 25 5.1 Purpose 25 5.2 Recommendations 25 5.3 Protocols 25 5.4 Operating Systems (OSs) 25 5.5 Encryption 26 5.6 General Considerations 26 5.7 Software Development References 26 5.7.1 Microsoft Windows NT OS 27 5.7.2 UNIX OS 27 6. DISA ENCLAVE SECURITY IMPLEMENTATION DESCRIPTION AND EXTENSION REQUIREMENTS 29 6.1 Guidance 29...
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...CHAPTER – 1 INTRODUCTION TO INTERNET WHAT IS A NETWORK? [pic] A network is a group of computers that are able to communicate with one another and share data, files, programs, and operations. The computers in a network are connected via hardware and software. The hardware is what physically connects the computers in the network together. For example: telephone lines, fibre-optic cables, routers and gateways, and the computers themselves. The software is what enables us to use the hardware for communication and exchanging information. Just as your brain tells your body parts how to function and work together, the software governs the way computers in the network communicate with each other and perform functions. Software that enables networking follows a set of rules that are generally referred to as protocol. Networks can be interoperable. This means that different types of computers, using different operating systems, can be connected, communicate with each other, and share information - as long as they follow the network protocols. [pic] In Summary: A network is a group of two or more computers, connected together through a physical infrastructure, that are able to communicate and exchange information because they agree to use software that observes the same set of rules, or protocol. WHAT IS THE INTERNET? • A network of networks • Based on TCP/IP (Transmission Control Protocol/Internet Protocol) • Global • A variety of services and...
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