Security Hardening of Linux Systems Linux is a free and open-source Unix-like operating system. As an open-source operating system, Linux servers are widely used due to their significant advantages in security, efficiency, and stability. However, if permissions are not properly allocated, the security of the Linux system cannot be adequately guaranteed. Below, we will primarily … Read more
Basic Concepts of Firewalls All security topics are inseparable from the involvement of firewalls, especially in <span>OpenWrt</span>. Understanding the concept of firewall zones and the three types of rules is essential for correctly configuring SSH, VPN, port forwarding, and other functions. What is a Firewall Zone? In OpenWrt, firewalls do not write rules for individual … Read more
Many friends have probably experienced OpenWrt, right? Have you felt its powerful and outrageous features due to its open-source and customizable nature while building your own “super router”? However, with the freedom that open-source brings, users also need to take on more security responsibilities. In this series, we will discuss the security hardening of OpenWrt, … Read more
Introduction: Why Security Hardening is Crucial In critical environments such as defense systems, medical devices, and industrial automation, security and reliability are non-negotiable. Just as hospitals follow strict safety protocols before surgeries, real-time operating system (RTOS) developers must adhere to stringent standards to mitigate the risks of cyberattacks and human errors. For VxWorks, Wind River … Read more
In today’s rapidly accelerating digital transformation, the Linux operating system, as the mainstream OS for servers and edge computing devices, directly impacts the protection of enterprise data assets and user privacy. This guide will present a practical security hardening solution from the core dimensions of security reinforcement, combined with code examples, focusing on two key … Read more