In the field of network management on Linux systems, there is a classic toolkit that has been refined over many years — net-tools. As a core foundational component of the Linux operating system’s NET-3 network distribution, it has long been an indispensable tool for network configuration and monitoring for operations engineers, network administrators, and technical … Read more
liboping is a library written in C for generating ICMP ECHO_REQUEST (i.e., ping packets). It supports parallel probing of multiple hosts and can transparently handle both IPv4 and IPv6 addresses. This library is designed with a object-oriented interface, making it very useful in network monitoring applications or other scenarios that require frequent ping operations. Here … Read more
One bamboo, one orchid, one stone, with rhythm, fragrance, and integrity. 1 Software Introduction Nethogs is a command-line tool that can monitor the network data usage of Linux system processes in real-time, similar to top. 2 Effect Demonstration 3 Other Matters Advantages: A rare process-based data traffic monitoring tool under Linux. Disadvantages: None Ease of … Read more
The Role of iptables and the Difference from firewalld 1. What is iptables? What is it used for? iptables is a classic firewall tool on Linux systems, operating at the network layer, with main functions including: Packet Filtering Allowing or blocking specific network traffic based on rules (such as IP addresses, ports, protocols, etc.) Traffic … Read more
Essential for Home Servers! One-Click Deployment of Astro Service Panel Have you ever encountered the hassle of managing too many self-built services at home, forgetting port numbers, and dealing with chaotic management? Today, I bring you a super practical home network service panel, Astro, which allows for one-click deployment and easy management of all services! … Read more
Malicious code typically relies on C2 (Command and Control) channels to communicate with attackers, receiving instructions and leaking data. Analyzing the traffic characteristics of C2 channels aids in the detection and defense against malicious code. C2 Channel Traffic Characteristics 1. Communication Patterns： • Periodic Heartbeats：Malicious code may periodically send heartbeat packets to the C2 server … Read more
Qpoint recently released Qtap, an open-source network traffic monitoring tool based on eBPF technology, specifically designed for Linux systems. This tool hooks into TLS/SSL encryption functions, allowing it to capture traffic information before and after data encryption, and presents detailed network data in plaintext, including processes, containers, hosts, users, and protocols. Qtap operates in an … Read more
Image source: Internet In Linux systems, there are many performance monitoring tools. Below, I will introduce several commonly used command-line tools. 1. top/htop top: Function: Real-time monitoring of processes, displaying information about CPU, memory, load, swap space, etc. Common Shortcuts: Shortcut Description M Sort by memory usage P Sort by CPU usage k Kill a … Read more
Hello everyone, today I want to introduce a particularly powerful Python library – mitmproxy! It is an intercepting proxy tool that supports HTTP/HTTPS, allowing us to easily monitor and modify network requests. Whether for web scraping or API testing, it can save us a lot of trouble. I have been using it for several years, … Read more
This article is from the September 2016 issue of CONTROL ENGINEERING China, originally titled: Cybersecurity Mindset Required in the Era of IIoT As the application of the Industrial Internet of Things (IIoT) increases, the potential risks of cyber attacks are also on the rise. To prevent these risks from becoming a reality, manufacturing companies need … Read more