Book Image

Learn Wireshark, - Second Edition

By : Lisa Bock
5 (1)
Book Image

Learn Wireshark, - Second Edition

5 (1)
By: Lisa Bock

Overview of this book

Wireshark is a popular and powerful packet analysis tool that helps network administrators investigate latency issues and potential attacks. Over the years, there have been many enhancements to Wireshark’s functionality. This book will guide you through essential features so you can capture, display, and filter data with ease. In addition to this, you’ll gain valuable tips on lesser-known configuration options, which will allow you to complete your analysis in an environment customized to suit your needs. This updated second edition of Learn Wireshark starts by outlining the benefits of traffic analysis. You’ll discover the process of installing Wireshark and become more familiar with the interface. Next, you’ll focus on the Internet Suite and then explore deep packet analysis of common protocols such as DNS, DHCP, HTTP, and ARP. The book also guides you through working with the expert system to detect network latency issues, create I/O and stream graphs, subset traffic, and save and export captures. Finally, you’ll understand how to share captures using CloudShark, a browser-based solution for analyzing packet captures. By the end of this Wireshark book, you’ll have the skills and hands-on experience you need to conduct deep packet analysis of common protocols and network troubleshooting as well as identify security issues.
Table of Contents (28 chapters)
1
Part 1 Traffic Capture Overview
6
Part 2 Getting Started with Wireshark
11
Part 3 The Internet Suite TCP/IP
16
Part 4 Deep Packet Analysis of Common Protocols
21
Part 5 Working with Packet Captures

Questions

Now it's time to check your knowledge. Select the best response and then check your answers, which can be found in the Assessments appendix:

  1. Packet analysis has been around in some form since the _____ as a diagnostic tool to observe data and other information traveling across the network.
    1. 1950s
    2. 1960s
    3. 1970s
    4. 1990s
  2. Packet analysis is used in the real world in many forms. One is the DHS _____system, which monitors for threats.
    1. CARVER
    2. Packet
    3. EINSTEIN
    4. DESTINY3
  3. In the expert system, _____ provides information about typical workflows such as TCP window updates or connection finishes.
    1. Note
    2. Chat
    3. Error
    4. Warn
  4. A ____ provides a snapshot of network traffic during a window of time using Wireshark or tshark. Characteristics can include utilization, network protocols, and effective throughput forwarding rates.
    1. Round Robin
    2. DORA process
    3. Baseline
    4. WinCheck
  5. Monitoring for threats occurs in one of three ways. _____ is when a system has fallen victim to an attack and the incident response team manages the attack, followed by a forensic exercise.
    1. Proactive
    2. Reactive
    3. Active
    4. Redactive
  6. When testing _____ using Wireshark, you will be able to determine how they communicate once active and see whether they phone home without being prompted.
    1. ACLs
    2. Expert systems
    3. IoT devices
    4. IDSes
  7. When obtaining an IP address, DHCP will go through a four-part transaction called the _____.
    1. Round Robin
    2. DORA process
    3. Baseline
    4. WinCheck