Click the blue “Best Programmer” to follow me! Add a “Star“, every day at 18:03 to learn technology together! Complete Guide to Configuring iptables and firewalld Firewalls 1. Basic Concepts of Firewalls 1.1 What is a Firewall A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on … Read more
Jacob Beningo is the founder of Beningo Embedded. Beningo’s website: www.beningo.com Whether you love or hate open-source software, there are many lessons to be learned from writing modern firmware. For example, we can learn how to write portable and configurable code or create better documentation. In today’s article, we will explore some lessons learned from … Read more
This article continues from the previous piece titled “Key Developments in the Internet of Things (Part I): Seamless Connectivity andAI Integration as the Winning Focus!“, featuring an interview with Zhou Wei, General Manager of Silicon Labs (芯科科技) in China, and Chen Youyan, Senior Regional Sales Manager for South China. They continue to discuss the trends … Read more
Over the years in the IoT SIM card industry, I have often been asked, what is so special about IoT SIM cards? Why are more and more devices starting to use them for connectivity? The answer does not lie in any profound technical jargon; it is hidden in the details of everyday life. Let us … Read more
Intelligent evolution and the complexity of electronic and electrical architecture As new energy vehicles enter the competitive second half, the empowerment of intelligence and the development towards the era of autonomous driving have become the main direction for the development of electric intelligent vehicles. Driven by the gradual deepening of intelligence, a large number of … Read more
In recent years, virtualization technology has become a routine part of data centers. Whether it is server virtualization or cloud management platforms, operations and maintenance personnel are increasingly accustomed to completing most tasks in a browser: powering on and off, allocating resources, remote desktop access, and log queries. It seems that traditional KVM (Keyboard, Video, … Read more
Source: freebuf Part01 Vulnerability Overview A critical vulnerability has been discovered in the ipset subsystem of the Linux kernel netfilter, allowing local attackers to escalate their privileges to root level. This vulnerability exists in the bitmap:ip implementation of the ipset framework, stemming from insufficient range validation when processing CIDR format IP address ranges. Due to … Read more
▲ Click the blue text “China Electronics Technology Group Corporation” to follow the CETC brand micro-publication Recently, the self-developed Da Microkernel and Type-1 virtualization software platform by CETC Taiji Puhua has won a bid for an aviation software project, marking a significant leap in basic software from the “automotive-grade platform” to the “aviation-grade scenario” due … Read more
tcpdump Use tcpdump to capture traffic from all network interfaces in real-time, filtering and saving when sensitive information is detected in the traffic. tcpdump -i any -s 0 -A -n -l |egrep -i "Host:|Authorization:|password:|password=" • -i any: Listen to traffic on all network interfaces; • -s 0: Capture full packets (no truncation); • -A: Display … Read more
