Troubleshooting with Wireshark: Fundamental Protocol Analysis

By Ross Bagurdes
Improve your network behavior troubleshooting skills and knowledge of protocols with this course. You'll use Wireshark to observe protocol logic, examine ICMP messages, capture DHCP traffic, and learn about basic DNS operation and how TCP operates.
Course info
Rating
(51)
Level
Intermediate
Updated
Mar 28, 2016
Duration
3h 42m
Table of contents
Introduction to Troubleshooting and Protocol Analysis
Introduction 4m A Logical Approach to Troubleshooting 10m Quality Wireshark Troubleshooting 5m
Troubleshooting with Ping and Traceroute
Introduction 1m Introduction to Internet Control Message Protocol (ICMP) 5m ICMP Error Messages 11m Traceroute Utilities 7m Demo: Examining Proper ICMP Behavior 4m Demo: Using Traceroute to Discover Networks in Windows 8m Demo: Using Traceroute to Discover Networks in Linux 15m Summary 1m
Troubleshooting with ICMP Error Messages
Introduction 1m Demo: Pinging a Device on Our LAN That Doesn't Exist 3m Demo: Pinging a Device on a Network That Isn't Reachable 2m Demo: What a Router Does If It Can't Reach a Specific Host on a Network 3m Demo: Using an Application to Try to Connect to a System That Won't Respond 3m Demo: Protocol Unreachable Error Messages 6m ICMP Redirect Messages 5m Summary 1m
Troubleshooting Dynamic Host Configuration Protocol (DHCP)
Introduction 1m Basic DHCP Operation 2m Demo: Examine DHCP Operation in Wireshark 9m DHCP Relay Agent 3m Demo: Examine DHCP Relay Agents Operation 8m Demo: Option 50 - Client Asks for Previous Address 3m Demo: Option 50 - Server Declines Client Requested IP 5m Demo: Option 50 - Forcing Windows to Request New IP 7m Demo: Common DHCP Issues - No Server Response 8m Demo: Common DHCP Issues - Server Configuration Incorrect 4m Demo: Common DHCP Issues - Rogue DHCP Server 7m Summary 1m
Troubleshooting Domain Name System (DNS) and Slow Networks
Introduction 3m Does DNS Use TCP or UDP? 3m Demo: Capture a DNS Query and Reply 4m Demo: Examine Slow Web Pages with Wireshark 11m Summary 1m
TCP Sequence and Acknowledgment Numbers
Introduction 1m Transmission Control Protocol (TCP) 5m Demo: Examine TCP 3 Way Handshake and 4 Way Disconnect in Wireshark 4m Sequence Numbers 8m Demo: Use Wireshark to Examine TCP Sequence Numbers 13m Demo: Use Wireshark to Observe Packet Loss via TCP 12m Summary 2m
Description
Course info
Rating
(51)
Level
Intermediate
Updated
Mar 28, 2016
Duration
3h 42m
Description

Wireshark is a very powerful tool for troubleshooting, but getting started with it can be overwhelming when it comes to the protocols for solving network behavior issues. This course, Troubleshooting with Wireshark: Fundamental Protocol Analysis, will help you to understand how fundamental protocols operate using Wireshark as the mechanism for observing protocol logic in action. You'll start by learning about Ping and Traceroute and how they make use of ICMP, an important troubleshooting protocol, and ICMP messages. Next, you'll cover DHCP traffic, options, and improper behavior, followed by learning about basic DNS operation and DNS issues. Finally, you'll learn about TCP operations, sequence and acknowledgment numbers, and behavior. By the end of this course, you'll be able to expertly use Wireshark to analyze and solve complex network protocol issues you may have in the future.

About the author
Ross Bagurdes
About the author

For nearly 20 years, Ross has taught and managed data networks.

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