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Course Outline

Introduction

  • Wireshark as more than just a final diagnostic tool

Foundations of Network Troubleshooting

  • Root cause analysis methods

Installation of Wireshark

Key Features of Wireshark

  • Navigating the user interface

Capturing Traffic in a Test Setting

  • Choosing the appropriate network interface
  • Recording packets on wired and wireless connections

Log Analysis

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

Analyzing Connection Speed Issues for Specific Sites

  • Applying filters
  • Interpreting statistical data

Analysis by Traffic Category

  • Protocols including DNS, ARP, IPv4, IPv6, ICMP, UDP, TCP, and HTTP/HTTPS
  • Diagnosing persistent slow connections

Evaluating Response Times

  • Configuring delta time columns

Identifying Virus-Infected Devices

  • Analyzing ARP traffic patterns

Tracing Network Traffic Sources

  • Intel ANS probe
  • Software faults or misconfigurations causing network flooding

Isolating Performance Bottlenecks

  • Generating statistical charts and graphs
  • Customizing color coding in Wireshark
  • Filtering specific traffic
  • Leveraging the Wireshark Expert System and TCP/IP Resolution Flowchart

Resolving Connection Issues in Secured Environments

  • Handling proxies, firewalls, and clients

Optimizing Wireshark Configuration

  • Performing non-intrusive analysis

Troubleshooting Procedures

Recap and Concluding Remarks

Requirements

  • A solid grasp of TCP/IP networking fundamentals
 21 Hours

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