network analysis

Exploring Network Diagnostics and Fault Localization from the EtherCAT Frame Structure

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Exploring Network Diagnostics and Fault Localization from the EtherCAT Frame Structure

EtherCAT, with its high speed, real-time performance, and high precision, has become the preferred communication protocol for control systems in the field of industrial automation. However, its strict dependence on network quality and device configuration means that once anomalies occur, the difficulty and time cost of troubleshooting and repair can significantly increase. Achieving more efficient … Read more

ctsTraffic: A Powerful Network Performance Analysis Tool

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ctsTraffic: A Powerful Network Performance Analysis Tool

ctsTraffic: A Powerful Network Performance Analysis Tool In today’s complex and ever-changing network environment, analyzing network performance and reliability has become particularly important. ctsTraffic is a highly scalable client/server network tool developed by Microsoft that provides detailed performance and reliability analysis. It is suitable for a wide range of scenarios, from small devices to high-bandwidth … Read more

Efficient Linux Commands for Analyzing Log Files During the May Day Holiday

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Efficient Linux Commands for Analyzing Log Files During the May Day Holiday

Hello everyone, this is Linux Enthusiast Engineer. In this article, I will share 20 hardcore commands for efficiently analyzing log files using Shell. During this May Day holiday, I used these commands to troubleshoot 99% of log issues, which are simple yet effective. Let’s take a look! Source: https://segmentfault.com/a/1190000009745139 I run a small website on … Read more

Analysis of Packet Loss Issues in Linux Server Network Interfaces – Final Part

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Analysis of Packet Loss Issues in Linux Server Network Interfaces - Final Part

Previously, an article analyzed the reasons for packet loss in bonded network interfaces and their solutions. This article will detail the root causes of packet loss in bonded network interfaces and dynamically analyze the kernel using the bpftrace tool. We will also use dropwatch to observe packet loss in the kernel: Packet loss occurs in … Read more

Understanding 0trace: The First Tool in Kali

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Understanding 0trace: The First Tool in Kali

0x00->Overview On the official Kali website, the introduction to 0trace states: “This package is a routing tracing tool that can run on existing open TCP connections, allowing it to easily bypass certain types of stateful packet filters.” This tool is pre-installed in the Kali system. In Linux systems, it can be obtained using the command: … Read more

Essential Knowledge for Beginners in Cybersecurity: Understanding HTTP Packets

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Essential Knowledge for Beginners in Cybersecurity: Understanding HTTP Packets

1. What is an HTTP Packet What is HTTP HTTP: (HyperText Transfer Protocol) is the protocol used for transferring hypertext from World Wide Web (WWW) servers to local browsers. HTTP is a protocol based on the TCP/IP communication protocol for transmitting data (HTML files, image files, query results, etc.). HTTP is an application layer protocol, … Read more

Using ProfiShark for EtherCAT Master Performance Testing

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Using ProfiShark for EtherCAT Master Performance Testing

01 EtherCAT Master Performance Testing Generally, EtherCAT master performance testing focuses on the communication cycle of the master, whether the cycle time is stable, and how much jitter there is. Therefore, tests can be set under different cycle times, such as 2ms, 1ms, 500us, 250us, 125us, etc. to test the jitter. Third-party packet capture tools, … Read more