Problem Overview An example of a network issue where a computer client, after connecting to a wireless network AP, cannot log in to the application process. Problem Phenomenon After entering the username and password, the following error is returned: Problem Localization From the error message, it can be seen that the login failed (connection failed. … Read more
📌 Reading Notes 🕒 This article has 3125 words, approximately 5 minutes reading time 💡 The content is concise, but some effort was put into organizing it 💬 If you have any questions, feel free to leave a comment for discussion 👍 If you find it useful, remember to like/recommend to support! 💗 Your likes … Read more
Total text: 888 words, 24 images,Estimated reading time: 1 minute Previously, we successfully deployed OpenWrt on an x86 ESXi server (Deploying OpenWrt on x86 servers), but we did not set a root password, which is very insecure. Let’s quickly set a password under “system” → “Administration”, with a minimum length requirement of 6 characters. System … Read more
Installing Nginx on Rocky Linux 9 Hello everyone, I am Xing Ge. Nginx has become one of the mainstream choices for web service deployment due to its high performance, low resource consumption, and excellent reverse proxy capabilities. This article will guide you through the process of installing and configuring the Nginx service from scratch on … Read more
The OpenWRT system achieves data transmission between Ethernet (wired) and WiFi (wireless) through a multi-layer network architecture design and inter-process communication (IPC) mechanisms. Its core design includes network interface bridging, inter-process communication framework (ubus), firewall and routing rules, and unified configuration management system. The following are the specific implementation principles and key components: 1. Network … Read more
^_^Hello everyone, I am from Code Sea Intelligence!^_^ In enterprise applications, Linux is the preferred operating system for servers, primarily used for databases, middleware servers, and application servers. It is also leading in the deployment of large models that have recently gained popularity! 01 — Environment Preparation Download the Linux version of the MySQL server. … Read more
Scenario 294: Firewall Service Not Running Issue: The firewall service is not running, leading to insecure network access. Troubleshooting Steps: Check the status of the firewall service: systemctl status firewalld If the firewall service is not running, start it: systemctl start firewalld Enable the firewall service to start automatically on boot: systemctl enable firewalld Scenario … Read more
1. System-Level Hardening 1. Dynamic Firewall Configuration Firewall Configuration: Use firewall tools such as iptables or firewalld to strictly limit access to the model server. For example, only open specific ports required for model services and allow access only from trusted IP addresses or network segments. Example command: Allow a specific IP (e.g., 192.168.1.100) to … Read more
Operating System:openEuler 24.03 LTS SP1, CentOS-8, AlmaLinux, Rocky Linux, etc.Preparation Steps1. Disable SELinux sestatus # Check status, 'disabled' indicates it has been disabled sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config # Disable SELinux setenforce 0 # Temporarily disable /usr/sbin/sestatus -v # Check SELinux status, 'disabled' indicates it is off 2. Firewall Configuration 2.1. Disable firewall: systemctl stop firewalld.service … Read more
1. SELinux and Firewall Optimization 1. SELinux SELinux, or Security-Enhanced Linux, is a Linux kernel module and a security subsystem for Linux, primarily developed by the National Security Agency (NSA). Its main purpose is to minimize the resources accessible to service processes in the system (principle of least privilege). Due to this principle, many operations … Read more