You're reading from Learn Wireshark A definitive guide to expertly analyzing protocols and troubleshooting networks using Wireshark

Product type Paperback

Published in Aug 2022

Publisher Packt

ISBN-13 9781803231679

Length 606 pages

Edition 2nd Edition

Languages

TCP

Tools

Wireshark

Concepts

Networking

Author (1):

Lisa Bock

View More author details

Table of Contents (28) Chapters

Preface

1. Part 1 Traffic Capture Overview

2. Chapter 1: Appreciating Traffic Analysis FREE CHAPTER

3. Chapter 2: Using Wireshark

4. Chapter 3: Installing Wireshark

5. Chapter 4: Exploring the Wireshark Interface

6. Part 2 Getting Started with Wireshark

7. Chapter 5: Tapping into the Data Stream

8. Chapter 6: Personalizing the Interface

9. Chapter 7: Using Display and Capture Filters

10. Chapter 8: Outlining the OSI Model

11. Part 3 The Internet Suite TCP/IP

12. Chapter 9: Decoding TCP and UDP

13. Chapter 10: Managing TCP Connections

14. Chapter 11: Analyzing IPv4 and IPv6

15. Chapter 12: Discovering ICMP

16. Part 4 Deep Packet Analysis of Common Protocols

17. Chapter 13: Diving into DNS

18. Chapter 14: Examining DHCP

19. Chapter 15: Decoding HTTP

20. Chapter 16: Understanding ARP

21. Part 5 Working with Packet Captures

22. Chapter 17: Determining Network Latency Issues

23. Chapter 18: Subsetting, Saving, and Exporting Captures

24. Chapter 19: Discovering I/O and Stream Graphs

25. Chapter 20: Using CloudShark for Packet Analysis

26. Assessments

27. Other Books You May Enjoy

Reviewing the transport layer

The transport layer of the OSI model is responsible for providing end-to-end data transport, by either using a connectionless or connection-oriented protocol across an IP network. The transport protocol used will depend on the application.

In addition to TCP and UDP, there are several protocols in this layer, including the following:

Reliable data protocol (RDP): Used to transfer data in a connection-oriented manner
Stream control transmission protocol (SCTP): Provides the reliable transmission of data streams that have more than one IP address

While there are other transport layer protocols, the two predominant protocols are TCP and UDP, as shown in the following figure:

Figure 9.1 – The OSI model—Transport layer

UDP is connectionless and is used when data transport needs to be fast. UDP has a lightweight four-field header that is always 8 bytes in length.

Note

Unlike TCP, UDP currently...