You're reading from Network Analysis using Wireshark Cookbook This book will be a massive ally in troubleshooting your network using Wireshark, the world's most popular analyzer. Over 100 practical recipes provide a focus on real-life situations, helping you resolve your own individual issues.

Product type Paperback

Published in Dec 2013

Publisher Packt

ISBN-13 9781849517645

Length 452 pages

Edition 1st Edition

Tools

Wireshark

Concepts

Network Security

Author (1):

Yoram Orzach

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Table of Contents (17) Chapters

Preface

1. Introducing Wireshark FREE CHAPTER

2. Using Capture Filters

3. Using Display Filters

4. Using Basic Statistics Tools

5. Using Advanced Statistics Tools

6. Using the Expert Infos Window

7. Ethernet, LAN Switching, and Wireless LAN

8. ARP and IP Analysis

9. UDP/TCP Analysis

10. HTTP and DNS

11. Analyzing Enterprise Applications' Behavior

12. SIP, Multimedia, and IP Telephony

13. Troubleshooting Bandwidth and Delay Problems

14. Understanding Network Security

A. Links, Tools, and Reading

Index

Troubleshooting scenarios for video conferencing applications

Video conferencing uses the same protocols as standard telephony, but there is a difference: while in telephony we have one stream of data in each direction, we have a stream of data and a stream of video in video conferencing. When you capture data on the end device, you will see four streams of data: two streams that you send to the other side and two streams of data that are sent back to you.

Another difference is that some video conference applications are still using the H.323 protocol suite, so instead of troubleshooting SIP problems, you will have to troubleshoot H.225 and H.245 connectivity issues. Due to the fact that most applications use SIP and the IETF protocol stack, we will focus on them only.

Getting ready

To troubleshoot a problem in your video conference system, connect the instance of Wireshark with port mirror to the device or to the link to the devices that are functioning badly.