Comparing WPS and WPA Attacks

Posted by in Security+ | 0 comments

Do you know the differences between WPS and WPA attacks? You should if you plan to take the Security+ exam. For example, can you answer this question?

Q. A war driver is capturing traffic from a wireless network. When an authorized client connects, the attacker is able to implement a brute force attack to discover the encryption key. What type of attack did this war driver use?

A. WPS attack

B. IV attack

C. Packet injection

D. WPA cracking

More, do you know why the correct answer is correct and the incorrect answers are incorrect? Answer and explanation at end of this post.

CompTIA Security+ Study Guide

The 501 Version of the Study Guide

The CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide is an update to the top-selling SY0-201, SY0-301, and SY0-401 study guides, which have helped thousands of readers pass the exam the first time they took it.  It includes the same elements readers raved about in the previous three versions.

Each of the eleven chapters presents topics in an easy to understand manner and includes real-world examples of security principles in action.

You’ll understand the important and relevant security topics for the Security+ exam, without being overloaded with unnecessary details. Additionally, each chapter includes a comprehensive review section to help you focus on what’s important.



Over 300 realistic practice test questions with in-depth explanations will help you test your comprehension and readiness for the exam. The book includes:

  • A 75 question pre-test
  • A 75 question post-test
  • Practice test questions at the end of every chapter.

Each practice test question includes a detailed explanation to help you understand the content and the reasoning behind the question. You’ll be ready to take and pass the exam the first time you take it.

If you plan to pursue any of the advanced security certifications, this guide will also help you lay a solid foundation of security knowledge. Learn this material, and you’ll be a step ahead for other exams. This SY0-501 study guide is for any IT or security professional interested in advancing in their field, and a must-read for anyone striving to master the basics of IT security.

Kindle edition also available.

WPA Cracking Attacks

Unfortunately, WPA (Wi-Fi Protected Access) is susceptible to password-cracking attacks, especially when the network is using a weak PSK or passphrase. A WPA cracking attack involves three steps:

1. Use a wireless sniffer or protocol analyzer to capture wireless packets. Sniffing this way is similar to how attackers sniff wired networks to eavesdrop and capture information sent across a network.
2. Wait for a wireless client to authenticate. WPA wireless clients authenticate with WAPs using a four-way handshake where they exchange information. Essentially, the client needs to prove to the WAP that it knows the passphrase. However, the client doesn’t send the passphrase in cleartext. Instead, the four-way handshake allows the client to encrypt the passphrase in such a way that the WAP can decrypt it and verify that the client has the correct passphrase.
3. Use a brute force attack. Once attackers have the encrypted passphrase from the captured four-way handshake, they can launch an offline brute force attack. Automated tools such as Aircrack-ng compare the encrypted password in the capture against passwords in one or more password files. When successful, it gives the attacker the actual passphrase used by the WLAN.

WPA Attacks

A key here is that the attacker must capture the four-way handshake. This only occurs when a user tries to authenticate. If no one is active on the network, this attack won’t work. However, if a user is active, the attacker can use a different attack, such as a jamming attack, to disconnect the user and force the user’s system to authenticate again.

Remember this

In WPA cracking attacks, attackers capture traffic with a wireless sniffer waiting for an authorized client to connect, so that they can capture the four-way authentication handshake information. They then use a brute force attack to discover the passphrase.

WPS Attacks

Wi-Fi Protected Setup (WPS) allows users to configure a wireless network without typing in the passphrase. Instead, users can configure devices by pressing buttons or by entering a short personal identification number (PIN).

For example, a user can configure a new wireless device by pressing a button on the WAP and on the wireless device. It will automatically configure the device within about 30 seconds with no other actions needed. These buttons can be physical buttons on the devices, or virtual buttons that the user clicks via an application or web page. When using the PIN method, users first identify the eight-digit PIN on the WAP and then enter the PIN on the new wireless device.

Get Certified Get Ahead

Unfortunately, WPS is susceptible to brute force attacks. A WPS brute force attack keeps trying different PINs until it succeeds. Reaver is an open source tool freely available that allows attackers to discover the PIN within 10 hours, and often much quicker. Once it discovers the PIN, it can then discover the passphrase in both WPA and WPA2 wireless networks.

Security experts recommend disabling WPS on all devices. However, not all devices include the capability to turn off WPS. Worse, many WAP interfaces include configuration settings that appear to turn off WPS—making users think it’s disabled when it’s still operational and vulnerable to attacks. Several testers reported that they were unable to disable WPS on each Linksys and Cisco Valet WAPs they tested. Some vendors have released firmware updates to address this, but updates are not available for all devices.

Security+ Practice Test Questions

SY0-501 Practice Test Questions 

Over 300 realistic Security+ practice test questions

All questions include explanations so you'll know why the correct answers are correct,

and why the incorrect answers are incorrect.

Pass the Security+ Exam

the First Time You Take It

Multiple quiz formats to let you use these questions based on the way you learn.
  • Learn mode - randomized. View each of the questions in random order. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
  • Learn mode - not randomized. View each of the questions in the same order. Use this if you want to make sure that you see all of the questions. Learn mode allows you to keep selecting answers until you select the correct answer. Once you select the correct answer, you'll see the explanation. Click here to see how learn mode works.
  • Test mode - randomized. View each of the questions in random order. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.
  • Test mode - not randomized. View each of the questions in the same order. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.
  • Test mode - 75 random questions. View 75 random questions from the full test bank similar to how the Security+ exam has a potential maximum of 75 multiple choice questions. In test mode, you can only see the correct answers and explanations after you complete the test. Click here to see how test mode works.

Get the full bank of SY0-501 Practice Test Questions Here

 SY0-501 Practice Test Questions


INCLUDES QUESTIONS TO HELP YOU PREPARE

FOR THE NEW PERFORMANCE BASED QUESTIONS 

Bonus - Performance Based Questions

Three sets of performance-based questions including over 30 questions. These questions show you what you can expect in the live exam. They include drag and drop, matching, sorting, and fill in the blank questions. See a demo here.

Bonus - Extra Practice Test Questions

New multiple-choice questions in the extra test bank. Questions are added occasionally. You can see what has been added recently here.

Get the full bank of Security+ (SYO-501) Practice Test Questions Here

Get the full bank of Security+ Practice Test Questions

Click here if you're looking for SY0-501 Full Study Package


 

Q. A war driver is capturing traffic from a wireless network. When an authorized client connects, the attacker is able to implement a brute force attack to discover the encryption key. What type of attack did this war driver use?

A. WPS attack

B. IV attack

C. Packet injection

D. WPA cracking

Answer is D. A Wi-Fi Protected Access (WPA) cracking attack captures traffic and then performs an offline brute force attack to discover the encryption key.

Wi-Fi Protected Setup (WPS) attacks also use a brute force attack, but do not need to wait for an authorized client to connect.

Initialization vector (IV) attacks often use packet injection techniques to generate more traffic in Wired Equivalent Privacy (WEP) attacks.

Full Security+ Course

SY0-501 Full Security+ Course

Helping you Pass the First Time

Online access includes all of the content from the

CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide

  • Introduction
  • About the exam (including information on the number of questions, test duration, passing score, types of questions and more. Also includes a listing of the exam objectives)
  • 75 question pre-assessment exam
  • Mastering Security Basics (full content from Chapter 1 of the study guide including the exam topic review and 15 practice test questions)
  • Understanding Identity and Access Management (full content from Chapter 2 of the study guide including the exam topic review and 15 practice test questions)
  • Exploring Network Technologies and Tools (full content from Chapter 3 of the study guide including the exam topic review and 15 practice test questions)
  • Securing Your Network (full content from Chapter 4 of the study guide including the exam topic review and 15 practice test questions)
  • Securing Hosts and Data (full content from Chapter 5 of the study guide including the exam topic review and 15 practice test questions)
  • Comparing Threats, Vulnerabilities, and Common Attacks (full content from Chapter 6 of the study guide including the exam topic review and 15 practice test questions)
  • Protecting Against Advanced Attacks (full content from Chapter 7 of the study guide including the exam topic review and 15 practice test questions)
  • Using Risk Management Tools (full content from Chapter 8 of the study guide including the exam topic review and 15 practice test questions)
  • Implementing Controls to Protect Assets (full content from Chapter 9 of the study guide including the exam topic review and 15 practice test questions)
  • Understanding Cryptography and PKI (full content from Chapter 10 of the study guide including the exam topic review and 15 practice test questions)
  • Implementing Policies to Mitigate Risks (full content from Chapter 11 of the study guide including the exam topic review and 15 practice test questions)
  • 75 question post-assessment exam
  • Glossary

Get the SY0-501 Full Security+ Course Here


Test your readiness with these quality materials

Random 75-question tests

Random practice tests from the all of the practice test questions in the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. All questions include explanations so you'll know why the correct answers are correct, and why the incorrect answers are incorrect.

3 sets Performance-based Questions

Three new sets of performance-based questions with a total of 30 questions. These new questions use a new testing engine that includes realistic drag and drop, matching, sorting, and fill in the blank questions.

Flashcard Set

  • 494 Online Security+ Glossary Flashcards
  • 222 Online Security+ Acronyms Flashcards
  • 223 Online Security+ Remember This Slide from the popular CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide

Audio - SY0-501 Security+ Remember This Audio Files

Learn by Listening. Over one hour and 20 minutes of audio (MP3 downloads.)

Audio - SY0-501 Security+ Question and Answer Audio Files

Learn by Listening. Over two hours hour and 53 minutes of audio (MP3 downloads.)

Bonus #1

Audio from the end of chapter reviews from each of the chapters in the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide. Over one hour and 40 minutes of additional audio.

Bonus #2

Access to all of the online content that is available for free to anyone that purchases the CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide. This includes labs, extra practice test questions, and supplementary materials

Bonus #3 

Access the study materials for a total of 60 days because sometimes life happens.

Get the SY0-501 Full Security+ Course Here

See Chapter 4 of the CompTIA Security+: Get Certified Get Ahead: SY0-401 Study Guide for more information on securing wireless networks.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

CompTIA Security+ Get Certified Get Ahead: SY0-501 Study Guide

Subscribe To Our Newsletter

Join our mailing list and get a free excerpt of the CompTIA Security+: Get Certified Get Ahead: SY0-501 Study Guide.  This excerpt includes the introduction and Chapter 1. 

You have Successfully Subscribed!

Get Certified Get Ahead is a participant in the Amazon Services LLC Associates Program,
an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Copyright © 2015 Get Certified Get Ahead. All Rights Reserved.