Wireshark Traffic Analysis: Customizing the Interface, ARP, ICMP, and DNS
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.
What you'll learn
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.
Table of contents
- Introduction 2m
- ICMP Type 3 Codes 2m
- Demo: Examining ICMP Destination Host Unreachable 5m
- Demo: Examining ICMP Destination Network Unreachable 5m
- Demo: Examining ICMP Destination Port Unreachable 5m
- Demo: Examining ICMP Destination Protocol Unreachable 4m
- Demo: Examining ICMP Destination Administratively Prohibited 3m
- Demo: Examining ICMP Redirects 7m
- Summary 2m
About the author
Ross has had a diverse career. He has a Structural Engineering degree from Milwaukee School of Engineering, but gave up the career shortly after graduating from college. Beginning in 1997, Ross began officially working in IT, implementing and supporting a paperless work order system for a Natural Gas Utility in Illinois. Since then, Ross has spent his years teaching and managing data networks. Ross spent 7 years at University of Wisconsin Hospitals and Clinics, supporting and managing the large ... more