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 for you to check your knowledge. Select the best response, and then check your answers, which can be found in the Assessment appendix:

  1. The DHCP process begins with a(n) _____ packet sending a broadcast out on the network asking for an IP address.
    1. Offer
    2. Request
    3. Discover
    4. Appeal
  2. The DHCP _____ packet is sent by the client and formally requests an IP address from the server.
    1. Offer
    2. Request
    3. Petition
    4. Appeal
  3. One way to obtain an IPv6 address is to use _____to automatically assign an IP address.
    1. Auto Request
    2. Ready Option
    3. Pine Option
    4. SLAAC
  4. DHCPv6 clients use UDP port 546. Servers and relay agents use port _____.
    1. 546
    2. 547
    3. 68
    4. 67
  5. In a DHCP header, the _____defines the length of the hardware address in bytes.
    1. htype
    2. XID
    3. ciaddr
    4. hlen
  6. DHCP can have several options. Option 50 represents _____.
    1. The DNS server address(es)
    2. The requested IP address
    3. The lease time for this IP address
    4. The type of message
  7. When you're sending the DHCP Release message, the way...