Wireshark Traffic Analysis: Customizing the Interface, ARP, ICMP, and DNS from Pluralsight

Using Wireshark to identify and analyze ARP, ICMP, and DNS traffic is a great tool to add to a network engineer's toolkit. Many of the most easily corrected problems on a network can be solved by understanding proper operation of these protocols.

Network engineers can quickly become frustrated with unusual network performance issues. While most engineers are familiar with ARP and know how to clear a cache on a device, and they use ping regularly to troubleshoot networks, understanding both ARP and ICMP operation at the packet level will bring a new way to quickly solve network issues. In this course, Wireshark Traffic Analysis: Customizing the Interface, ARP, ICMP, and DNS, you will gain the ability to use Wireshark captures to detect and understand network issues causing performance problems. First, you will see how to customize the Wireshark interface, creating profiles for unique troubleshooting situations. Next, you will discover ARP operation, what it means, and how to use it to identify specific behaviors of network traffic. Finally, you will explore how to analyze ICMP types and codes in Wireshark, so you can use it to troubleshoot networks in a new way. When you are finished with this course, you will have the skills and knowledge of Wireshark protocol analysis needed to analyze and troubleshoot ARP, ICMP, and DNS traffic on your network.

What's inside

Syllabus

Course Overview

Customizing the Wireshark Interface

Troubleshooting Layer 2 Issues with ARP

Introducing ICMP to Troubleshoot Networks

Troubleshooting Using ICMP Error Messages

Examining and Troubleshooting DNS

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Explores ARP, which is standard in computer networking

Teaches ICMP, which helps learners troubleshoot networks

Develops skills necessary for troubleshooting network issues

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Wireshark Traffic Analysis: Customizing the Interface, ARP, ICMP, and DNS with these activities:

Review Wireshark Interface Customization

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Understanding Wireshark's interface and customizing it can enhance your ability to troubleshoot network issues.

Browse courses on Wireshark

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Familiarize yourself with the Wireshark interface layout and menus.
Customize your display filters to focus on specific traffic.
Create and save custom profiles for different troubleshooting scenarios.

Read TCP/IP Illustrated, Volume 1

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Reinforce knowledge of networking protocols, which form a foundation for this course.

View TCP/IP Illustrated: The protocols on Amazon

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Read the first two chapters to refresh your understanding of TCP/IP
Read the chapters on ARP, ICMP, and DNS to gain a foundational understanding of the protocols covered in this course

Wireshark Troubleshooting Group

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Collaborate with peers to troubleshoot network issues using Wireshark, sharing knowledge and insights.

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Join a study group or online forum focused on Wireshark troubleshooting.
Participate in discussions and collaborate on solving network issues.
Present and discuss your own Wireshark troubleshooting experiences.

11 other activities

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ARP Analysis with Wireshark

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Wireshark can capture ARP packets, enabling you to identify and resolve ARP-related network problems.

Browse courses on ARP

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Follow a tutorial on ARP analysis using Wireshark.
Practice identifying ARP requests and replies.
Use Wireshark to troubleshoot ARP issues on a network.

Configure Wireshark Filter Expressions

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Wireshark's filter expressions enable you to focus on specific network traffic, deepening your understanding of ARP, ICMP, and DNS.

Browse courses on Wireshark

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Review the Wireshark filter expression syntax
Practice writing filter expressions to isolate ARP, ICMP, and DNS traffic
Apply filter expressions to capture files for further analysis

ICMP Error Message Analysis

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Wireshark captures ICMP packets, allowing you to analyze error messages and identify network issues.

Browse courses on ICMP

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Review the different ICMP error messages.
Use Wireshark to capture ICMP packets.
Identify and interpret ICMP error messages.
Troubleshoot network issues using ICMP error messages.

Analyze Network Traffic with Wireshark

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Hands-on practice with Wireshark enhances your ability to identify and resolve network issues.

Browse courses on Wireshark

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Capture network traffic using Wireshark
Inspect packet headers and payloads to identify ARP, ICMP, and DNS traffic
Analyze packet contents to troubleshoot network problems, such as connectivity issues or performance degradation

Create a Network Troubleshooting Guide

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Documenting your troubleshooting process and findings reinforces your understanding and creates a valuable resource for future reference.

Browse courses on Network Troubleshooting

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Identify common network troubleshooting scenarios
Develop step-by-step instructions for resolving each scenario, including Wireshark analysis techniques
Create a visually appealing and easy-to-follow guide

Create a Wireshark Profile

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Customizing Wireshark profiles streamlines troubleshooting by enabling quick access to frequently used settings.

Browse courses on Wireshark

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Identify the network troubleshooting scenarios you encounter most frequently
Design a Wireshark profile for each scenario, including specific filter expressions and display preferences
Test your profiles by capturing and analyzing network traffic

DNS Traffic Analysis Report

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Create a report analyzing DNS traffic captured with Wireshark, identifying potential issues and providing recommendations.

Browse courses on DNS

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Capture and analyze DNS traffic using Wireshark.
Identify any anomalies or issues in the DNS traffic.
Write a report summarizing your analysis and providing recommendations for improvement.

Assist with Network Troubleshooting at a Local Organization

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Practical experience troubleshooting network issues in a real-world setting reinforces your knowledge and develops your problem-solving skills.

Browse courses on Network Troubleshooting

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Contact a local organization that provides technical support or network services
Offer your assistance with network troubleshooting tasks
Work under the guidance of experienced network engineers to resolve network problems

Wireshark Advanced Analysis Workshop

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Attend a workshop to enhance your Wireshark analysis skills, covering advanced techniques and real-world troubleshooting scenarios.

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Research and identify a reputable Wireshark advanced analysis workshop.
Register and attend the workshop.
Actively participate in the workshop activities and discussions.

Develop a Training Module on Wireshark for Network Troubleshooting

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Creating a training module enhances your understanding of Wireshark and network troubleshooting while also benefiting others.

Browse courses on Network Troubleshooting

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Identify the key concepts and skills required for effective network troubleshooting with Wireshark
Develop interactive content, such as demonstrations, simulations, and quizzes
Test the training module with a group of learners to gather feedback and refine its effectiveness

Troubleshoot a Network Issue Using Wireshark

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Applying your Wireshark skills to a real-world problem solidifies your understanding and enhances your troubleshooting abilities.

Browse courses on Network Troubleshooting

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Identify a network issue, such as slow performance or intermittent connectivity
Capture network traffic using Wireshark
Analyze packet captures to identify the root cause of the problem
Develop and implement a solution to resolve the issue

Career center

Learners who complete Wireshark Traffic Analysis: Customizing the Interface, ARP, ICMP, and DNS will develop knowledge and skills that may be useful to these careers:

Network Architect

A Network Architect designs and implements computer networks. This course can help Network Architects improve their ability to design and implement networks that are reliable and efficient. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Network Architects can gain a deeper understanding of how networks operate and how to identify and solve problems.

See salaries and explore the career path for Network Architect

Network Engineer

A Network Engineer designs, implements, and maintains computer networks. These professionals must be able to identify and solve network problems quickly and efficiently. This course can help Network Engineers build their foundation in network troubleshooting. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Network Engineers can improve their ability to identify and solve network performance problems.

See salaries and explore the career path for Network Engineer

Cloud Architect

A Cloud Architect designs and implements cloud computing solutions. This course can help Cloud Architects improve their ability to design and implement cloud solutions that are reliable and efficient. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Cloud Architects can gain a deeper understanding of how networks operate and how to identify and solve problems.

See salaries and explore the career path for Cloud Architect

Network Analyst

A Network Analyst designs, implements, and maintains computer networks, including wired and wireless LANs, WANs, and the Internet. These professionals must be able to identify and solve network problems quickly and efficiently. This course can help Network Analysts build their foundation in network analysis and troubleshooting. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Network Analysts can improve their ability to identify and solve network performance problems.

See salaries and explore the career path for Network Analyst

Cybersecurity Analyst

A Cybersecurity Analyst is responsible for protecting an organization's computer systems and networks from cyber threats. This course can help Cybersecurity Analysts improve their ability to investigate and respond to cyber attacks. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Cybersecurity Analysts can gain a deeper understanding of how networks operate and how to identify and solve security problems.

See salaries and explore the career path for Cybersecurity Analyst

Security Analyst

A Security Analyst is responsible for protecting an organization's information and systems from security threats. This course can help Security Analysts improve their ability to investigate and respond to security incidents. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Security Analysts can gain a deeper understanding of how networks operate and how to identify and solve security problems.

See salaries and explore the career path for Security Analyst

Network Security Engineer

A Network Security Engineer is responsible for the security of a computer network, including protecting against unauthorized access, viruses, and other threats. This course can help Network Security Engineers improve their ability to investigate and respond to security incidents. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Network Security Engineers can gain a deeper understanding of how networks operate and how to identify and solve security problems.

See salaries and explore the career path for Network Security Engineer

Information Security Manager

An Information Security Manager is responsible for the security of an organization's information and systems. This course can help Information Security Managers improve their ability to investigate and respond to security incidents. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Information Security Managers can gain a deeper understanding of how networks operate and how to identify and solve security problems.

See salaries and explore the career path for Information Security Manager

Information Technology Director

An Information Technology Director is responsible for the overall operation of an organization's information technology systems. This course can help Information Technology Directors improve their ability to manage and troubleshoot network issues. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Information Technology Directors can gain a deeper understanding of how networks operate and how to identify and solve problems.

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IT Consultant

An IT Consultant provides advice and support to organizations on their information technology systems. This course can help IT Consultants improve their ability to troubleshoot network issues for their clients. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, IT Consultants can gain a deeper understanding of how networks operate and how to identify and solve problems.

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Network Administrator

A Network Administrator is responsible for the day-to-day operation of a computer network, including monitoring network performance, troubleshooting problems, and maintaining security. This course can help Network Administrators improve their ability to troubleshoot network issues. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Network Administrators can gain a deeper understanding of how networks operate and how to identify and solve problems.

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IT Manager

An IT Manager is responsible for the overall operation of an organization's information technology systems, including networks, servers, and applications. This course can help IT Managers improve their ability to manage and troubleshoot network issues. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, IT Managers can gain a deeper understanding of how networks operate and how to identify and solve problems.

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Computer and Information Systems Manager

A Computer and Information Systems Manager is responsible for the planning, implementation, and management of an organization's information technology systems. This course can help Computer and Information Systems Managers improve their ability to manage and troubleshoot network issues. By learning how to use Wireshark to analyze ARP, ICMP, and DNS traffic, Computer and Information Systems Managers can gain a deeper understanding of how networks operate and how to identify and solve problems.

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IT Auditor

An IT Auditor is responsible for auditing an organization's information technology systems. This course may be useful for IT Auditors who are interested in learning how to use Wireshark to analyze network traffic. By learning how to analyze ARP, ICMP, and DNS traffic, IT Auditors can gain a deeper understanding of how networks operate and how to identify and solve problems.

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Data Analyst

A Data Analyst collects, analyzes, and interprets data to help organizations make informed decisions. This course may be useful for Data Analysts who are interested in learning how to use Wireshark to analyze network traffic. By learning how to analyze ARP, ICMP, and DNS traffic, Data Analysts can gain a deeper understanding of how networks operate and how to identify and solve problems.

See salaries and explore the career path for Data Analyst