WHATS UP Packet Challenge: Analyzing ICMP and MTU in Wireshark
Topic Information This case is the fourth question in Sharkfest 2015 Packet Challenge, WHATS UP?, and the packet trace file is whatsup.pcapng . The main description is…
Category: Unicorn tutorials
Slow Throughput Analysis: Uncovering Network Performance Issues
Background A user reported a scenario in which the throughput between two systems was very slow. Throughput is a very important metric in system…
Exploring HTTP Responses: A Sharkfest Packet Analysis
Preface A packet example from the Sharkfest Packet Challenge. Sharkfest is an annual conference organized by Wireshark, dedicated to sharing knowledge, experience, and best…
Analyzing TCP Failures: A Sharkfest Packet Challenge Example
Preface A packet example from the Sharkfest Packet Challenge. Sharkfest is an annual conference organized by Wireshark, dedicated to sharing knowledge, experience, and best…
Selective Packet Loss Troubleshooting on International Lines
Background First, let me explain what selective or targeted packet loss is. This is just my description of certain problem scenarios, not professional…
How to Use Mergecap to Merge Packet Capture Files in Wireshark
Introduction Mergecap is one of the optional tools included with the Wireshark program when it is installed . It is a command line tool…
Troubleshooting Slow HTTP File Transfer: Analyzing Network Protocols and TCP Window Scale Issues
Background Many articles have addressed the issue of slow application transmission, which is a common challenge in network performance. However, pinpointing where and…
TCP Session Analysis Using Wireshark: How to Troubleshoot Slow Application Issues
Background A case from a friend, a certain customer reported that the computer application software was very slow to open, and provided a…
Understanding TCP ACKed Unseen Segments in Wireshark
1. Introduction By default, Wireshark’s TCP parser tracks the status of each TCP session and provides additional information when it detects issues or…
Diagnosing MTU Issues in Network Communication
Problem Background A user reported potential MTU issues affecting network communication. Specifically, a remote user connected to a branch office via an ISP…
Load More