What Is a Wildcard SSL Certificate and How Do You Install It?
What a wildcard SSL certificate covers, why it needs DNS-01 validation, how to install it with Let's Encrypt or cPanel, where multi-level subdomains break it, and the risks.
Web
Guides on web design, getting a website built, speed, user experience and technical foundations.
300 posts
What Is ModSecurity? WAF Basics and How to Fix 403 Errors
What is ModSecurity, what does it do as a WAF, and what should you do when it returns a 403? Rule sets, DetectionOnly mode and false positive handling explained.
What Is CageFS? Account Isolation on Shared Hosting
CageFS locks each CloudLinux hosting account inside its own virtual file system. We explain neighbor protection, how it differs from LVE and what site owners notice.
Fail2ban Setup Guide: Protect Your Server From Brute Force
How do you block SSH and web login attacks with fail2ban? Jail, filter and action logic, jail.local settings, ban list checks, whitelist and the risk of locking yourself out.
OpenLiteSpeed vs Nginx: What's the Difference and Which Is Better?
We compare OpenLiteSpeed and Nginx on architecture, .htaccess support, caching, PHP handling and management, using official documentation and no invented benchmarks.
Why Is My Website Slow? 10 Server Side Causes and Fixes
Is your slow website a server problem? Learn the diagnosis order and commands for TTFB, hosting limits, PHP, database, caching, DNS, TLS and bot traffic.
What Is Varnish Cache and How Do You Install It?
What is Varnish Cache and how do you install it in front of Nginx or Apache? A practical guide to VCL, HTTPS, cookie rules for WordPress and stores, and cache purging.
What Is Ping? Latency, RTT and Why Hosting Location Matters
Learn what ping is, how latency, RTT and TTFB differ, how distance slows a site with a worked example, and how to choose a hosting location or CDN.
What Is OPcache? How PHP Opcode Caching Speeds Up Your Site
OPcache keeps compiled PHP code in memory. We explain its settings, how to verify them, how to reset it after a deployment and what it changes on WordPress, based on the official docs.
Hosting Bandwidth Explained: What It Is and How Much You Need
Bandwidth, data transfer and latency are different things. We explain what unlimited means, estimate monthly transfer with example calculations and show how images and a CDN cut it.