Course Outline

Introduction

  • Wireshark -- not just a last-resort tool

Overview of Network Troubleshooting Concepts

  • Root cause analysis

Installing Wireshark

Overview of Wireshark Features

  • Navigating the UI interface

Capturing Traffic in the Test Environment

  • Selecting the network interface
  • Capture packets on wired and wireless networks

Analyzing the Logs

  • Inspecting the HTTP packets
  • Viewing back-and-forth TCP streams
  • Saving the log for offline inspection

Analyzing Connection Speed Issues When Connecting to a Particular Website

  • Using filters
  • Seeing the statistics

Analyzing by Traffic Type

  • DNS, ARP, IPv4, IPv6, ICMP, UDP, TCP, and HTTP/HTTPS
  • Consistently slow connections over prolonged periods of time

Checking Response Times

  • Setting delta time columns

Checking for Machines Infected with a Virus

  • Inspecting ARP traffic

Inspecting Sources of Network Traffic

  • Intel ANS probe
  • Broken/misconfigured software (network flooding)

Pinpointing Performance Issues

  • Creating statistical charts and graphs
  • Setting colors in Wireshark
  • Filtering traffic
  • Using Wireshark Expert System and TCP/IP Resolution Flowchart

Troubleshooting Connections within a Secured Network Environment

  • Proxies, firewalls and clients

Configuring Wireshark for Optimal Performance

  •  Non-intrusive analysis

Troubleshooting

Summary and Conclusion

Requirements

  • An understanding of TCP/IP networking principles
 21 Hours

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Testimonials (5)

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