Wireshark for Wireless LANs

Wireshark for Wireless LANs

by Jerome Henry / James Garringer
Released May 2017
Publisher(s): Addison-Wesley Professional
ISBN: 0134767527

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Video description

More Than 8 Hours of Expert Video Instruction

The Wireshark for Wireless LANs LiveLessons video training course offers more than eight hours of expert instruction on troubleshooting Wi-Fi networks using Wireshark.

Presented by Jerome Henry and James Garringer, Wireshark for Wireless LANs LiveLessons illuminates all the techniques you need to quickly identify and resolve real wireless network problems with Wireshark. Its nine well-organized lessons and 53 concise sublessons teach through real examples, easy-to-follow animations, and detailed audio explanations.

Experienced network engineers James Garringer and Jerome Henry thoroughly explain the crucial 802.11 concepts you need to master in order to troubleshoot Wi-Fi networks with Wireshark. They guide you through capturing and analyzing data at both physical and higher layers, and offer expert help with specific problems, such as dropped connections and slow performance.

If you’re responsible for a wireless network, Wireshark for Wireless LANs LiveLessons will help you improve its reliability and performance‚Äîand your own efficiency and effectiveness.

Coverage includes

  • Setting up your software and hardware for efficient wireless capture
  • Understanding channels, contention detection, thresholds, and 802.11 b/g/n/ac physical layers
  • Recognizing key clues in Layer 2 headers and frame check sequences
  • Decrypting and displaying wireless captures, so it makes sense
  • Customizing filters specifically for Wi-Fi exchanges
  • Using advanced tools to view traffic from a higher vantage point
  • Pinpointing problems by exploring management, control, data frames, and retransmissions
  • Troubleshooting slow, failed, and intermittent connections
  • Gaining deeper insights with statistical analysis and pattern recognition

Aout the Instructors

James Garringer (Atlanta, GA), CWNE, is an experienced consulting engineer who specializes in Wi-Fi and networking for education, healthcare, and enterprise customers throughout the United States Mr. Garringer has a special interest in Wireshark and protocol analysis, and has spent considerable time performing frame and packet analysis in customer and lab environments. A Certified Wireless Network Expert (CWNE No. 179), he also serves on the CWNP Board of Advisors, and on the WLAN Advisory Board. He has more than ten years of experience as a speaker and teacher. James is also the author of Wireshark Fundamentals Livelessons.

Jerome Henry (Pittsboro, NC), CWNE and CCIE Wireless, is Principal Engineer at Cisco focusing on Wi-Fi products. He has 15+ years of experience teaching technical Cisco courses and products in 15 countries and four languages. Through 15,000+ hours in the classroom, he has taught audiences ranging from college students to Cisco engineers. He holds Certified Wireless Networking Expert (CWNE No. 45), CCIE Wireless (No. 24750), has authored several books on Cisco wireless technologies, and has developed multiple Cisco courses on wireless topics, including Wireshark Fundamentals LiveLessons; CCNA Wireless 200-355 Complete Video Course, IoT Fundamentals, and more.

Skill Level

  • Intermediate

Learn How To

  • Capture the channels you need, even from remote sources
  • Understand the crucial role of Layer 1 data in wireless troubleshooting
  • Uncover key Layer 2 details and recognize what they mean
  • Efficiently capture wireless traffic and decrypt encrypted traffic
  • Discover the best ways to filter wireless captures
  • Manage large wireless captures from the command line
  • Identify issues by assessing key management, control, and data frames
  • Quickly troubleshoot slow or dropped connections
  • Export wireless capture data for industrial-strength pattern analysis

Who Should Take This Course

For all network engineers and other network professionals at all levels who need to troubleshoot wireless networks.

Course Requirements

Requires a basic understanding of networking and Wi-Fi.

About Pearson Video Training

Pearson’s expert-led video tutorials teach you the technology skills you need to succeed. These professional and personal technology videos feature world-leading author instructors published by your trusted technology brands: Addison-Wesley, Cisco Press, Pearson IT Certification, Prentice Hall, Sams, and Que. Topics include: IT certification, programming, web and mobile development, networking, security, and more. Learn more about Pearson Video training at http://www.informit.com/video

Table of contents

  1. Introduction
    1. Wireshark vs. Others
  2. Lesson 1: Setting up the Capture Environment
    1. Learning objectives
    2. 1.1 Wireshark Capabilities on Various Platforms
    3. 1.2 What We Will Use in This Course
    4. 1.3 Capturing from Local and Remote Adapters
    5. 1.4 Using Single and Multiple Channels
    6. 1.5 Capturing Encrypted Traffic
    7. Summary
  3. Lesson 2: RF Basics--Layer 1
    1. Learning objectives
    2. 2.1 Channels and Separation in the ISM and UNII Bands
    3. 2.2 CCI and Medium Contention
    4. 2.3 The Deferral Process
    5. 2.4 RF Math Basics
    6. 2.5 802.11 PHY
    7. 2.6 Wireshark and The OSI Layers
    8. Summary
  4. Lesson 3: MAC Header--Layer 2
    1. Learning objectives
    2. 3.1 MAC Header Format
    3. 3.2 Management Frames to Discover the Cell
    4. 3.3 Frames to Connect and Stay Connected
    5. 3.4 Retry Bit, Power Bit
    6. 3.5 Failed FCS and Capture Vantage Point
  5. Lesson 4: Dissecting a Captured Frame
    1. Learning objectives
    2. 4.1 OSI Model Mapping
    3. 4.2 Displaying Data
    4. 4.3 Encrypted Traffic
    5. 4.4 Configuring a WLAN Profile
    6. 4.5 Building a WLAN Analysis Profile
    7. 4.6 Importing a Color Profile
  6. Lesson 5: Filtering Wireless Traffic
    1. Learning objectives
    2. 5.1 Examining Normal Exchanges
    3. 5.2 Capture Filters and Troubleshooting Techniques
    4. 5.3 Traffic Filter Howto
    5. 5.4 Display Filters
    6. 5.5 Sharing Filters
    7. Summary
  7. Lesson 6: Wireshark Advanced Tools
    1. Learning objectives
    2. 6.1 Following UDP/TCP Conversations
    3. 6.2 Graphs, Conversations, and Endpoints
    4. 6.3 Using the IO Graph
    5. 6.4 Wireshark from the CLI
    6. 6.5 Using a Ring Buffer
    7. 6.6 Displaying Statistics at the CLI
    8. 6.7 Editing Capture Files
    9. 6.8 Reassembling Flows
    10. 6.9 Advanced Examples
  8. Lesson 7: Common Symptoms Part 1
    1. Learning objectives
    2. 7.1 Management Frames
    3. 7.2 Control Frames
    4. 7.3 Data Frames
    5. 7.4 Retransmissions
    6. 7.5 Failed FCS
    7. Summary
  9. Lesson 8: Common Symptoms Part 2
    1. Learning objectives
    2. 8.1 Slow Connection
    3. 8.2 Can't Connect
    4. 8.3 Can't Stay Connected
    5. Summary
  10. Lesson 9: Statistical Analysis and Pattern Recognition
    1. Learning objectives
    2. 9.1 Selecting Data to Export
    3. 9.2 Graphing in Excel
    4. 9.3 Examples of Pattern Recognition in Excel
    5. 9.4 Probe as Happiness Index
    6. 9.5 Configuration Comparisons and Voice Performance
    7. 9.6 Rate Shifting Pattern Measurement
    8. 9.7 Pattern General Case
    9. 9.8 Using Other Graphing Tools
    10. 9.9 Sharing Your Findings
  11. Summary
    1. Wireshark for Wireless LANs: Summary

Product information

  • Title: Wireshark for Wireless LANs
  • Author(s): Jerome Henry / James Garringer
  • Release date: May 2017
  • Publisher(s): Addison-Wesley Professional
  • ISBN: 0134767527