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 Duration 21 hours

Course Outline

Introduction

  • Wireshark -- a comprehensive tool, not just a last resort

Fundamentals of Network Troubleshooting

  • Root cause analysis

Wireshark Installation

Exploring Wireshark Capabilities

  • Navigating the user interface

Capturing Traffic in a Test Environment

  • Choosing the appropriate network interface
  • Capturing packets on wired and wireless networks

Log Analysis

  • Examining HTTP packets
  • Reviewing bidirectional TCP streams
  • Exporting logs for offline review

Investigating Connection Speed Issues for Specific Websites

  • Applying filters
  • Interpreting statistical data

Analysis by Traffic Type

  • Covering DNS, ARP, IPv4, IPv6, ICMP, UDP, TCP, and HTTP/HTTPS
  • Addressing persistent connection slowness

Evaluating Response Times

  • Configuring delta time columns

Identifying Virus-Infected Machines

  • Reviewing ARP traffic

Tracing the Origin of Network Traffic

  • Intel ANS probe
  • Malfunctioning or misconfigured software (network flooding)

Identifying Performance Bottlenecks

  • Generating statistical charts and graphs
  • Applying color coding in Wireshark
  • Filtering traffic streams
  • Utilizing the Wireshark Expert System and TCP/IP Resolution Flowchart

Troubleshooting in Secure Network Environments

  • Managing proxies, firewalls, and client configurations

Optimizing Wireshark Configuration for Performance

  •  Non-intrusive analysis techniques

Troubleshooting Procedures

Conclusion and Summary

Requirements

  • Familiarity with TCP/IP networking fundamentals

Testimonials (3)

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