Linux Server Ops and Security
4 posts in this series
A Linux server path for VPS choices, Ubuntu setup, SSH, firewall, Fail2ban, SSL, and day-to-day operations security.
VPS Selection for Website Building: Configuration, Routes, and Control Panels
How to choose a VPS for your website? This guide covers configuration, network routes, and control panels with real-world testing from Tencent Cloud, BandwagonHost, and DMIT in 2026. Includes a quick reference table for daily traffic from 100 to 10,000 visitors. Learn when CN2 GIA routes are worth the extra cost, compare BaoTa vs 1Panel, and find the perfect server solution while avoiding common pitfalls.
Ubuntu Server Initialization: User Management, SSH Hardening, and fail2ban Security Setup
Configure an Ubuntu server from scratch: user permission management, SSH security hardening, and fail2ban auto-banning. A complete guide covering both Ubuntu 22.04 and 24.04 initialization with full commands and configuration examples.
Firewall Configuration: UFW, iptables, and Security Policy Design
Deep dive into UFW and iptables Linux firewall tools, comparing configuration syntax, use cases, and security policy design principles to help sysadmins build secure network defenses
SSL Certificate Setup: Let's Encrypt Auto-Renewal and Multi-Domain Management
Let's Encrypt SSL with Certbot auto-renewal, multi-domain SAN and wildcard DNS-01, security hardening, and monitoring—hands-off HTTPS best practices.
