How to open a port with UFW on Ubuntu
Services running on Ubuntu or Debian need specific ports opened in the firewall before they can receive traffic. SSH connections, web servers and custom applications all require their ports to be accessible. You will install UFW (Uncomplicated Firewall),…
How to install RPM Fusion on AlmaLinux
RPM Fusion provides thousands of software packages that are not available in the official AlmaLinux repositories. You need these repositories to install multimedia codecs, graphics drivers and other tools that cannot be distributed through standard channels…
How to increase the PHP memory limit in WordPress
WordPress plugins and themes may require more memory than your server provides by default. When the PHP memory limit is too low, you will see error messages, slow page loads or features that stop working. Backup plugins, page builders and caching tools are…
How to switch users in Linux
Switching users in Linux allows you to access different accounts without logging out of your current session. This is necessary when you need to perform administrative tasks, test user permissions or access files owned by different accounts. You will learn…
How to change PHP version in cPanel
Your website or application may require a specific PHP version to function correctly. Outdated PHP versions can cause compatibility issues, while newer versions improve performance and security. You will use cPanel’s MultiPHP Manager to change the PHP…
How to use the ping command
Network connectivity problems prevent visitors from reaching your site and make it difficult to access your server. The ping command tests whether a connection exists between your computer and a destination server by measuring how long packets take to travel…
How to reset a cPanel password from WHM
Your customers occasionally lose access to their cPanel accounts and need password resets. WHM provides a quick way to update their credentials without requiring them to access the control panel themselves. You will locate the account in WHM’s List…
How to add an SPF record in cPanel
Email spoofing allows spammers to forge sender addresses and impersonate legitimate domains. An SPF record prevents this by publishing a list of authorised mail servers for your domain. When receiving mail servers check your SPF record, they can verify…
How to force HTTPS on your WordPress site
Mixed content warnings appear when your WordPress site loads resources over a mixture of HTTP and HTTPS at the same time. Active mixed content is the most common type on WordPress sites and triggers browser security warnings that can drive visitors away. You…
How to troubleshoot website access issues
Website access failures prevent visitors from reaching your site, sometimes displaying error messages and sometimes showing nothing at all. These issues stem from firewall blocks, DNS misconfigurations, malware infections or domain problems. You will diagnose…
