cPanel is a Linux-based web hosting control panel that provides a simple graphical interface for easily managing files, domains, emails, databases, security, and server backups without needing command-line access.
This article explains what a Reverse Trust relationship is in a cPanel & WHM DNS cluster, why it is required, and how servers use API tokens to authenticate and exchange DNS records securely. It also outlines the importance of mutual trust between all servers in the cluster.
This guide explains how DNS clusters work in cPanel & WHM, including requirements, recommended structures, trusted IP configuration, direct and intermediary linking, performance considerations, and the importance of Reverse Trust relationships. It also covers how to manage API tokens and how DNSOnly servers fit into a cluster.
This guide explains how the rpm.versions system in cPanel & WHM manages RPM and DEB packages, how to safely override default package states, how the directory hierarchy works, and how to use update_local_rpm_versions to avoid YAML formatting issues. It includes practical examples and best‑practice warnings.
This guide covers essential troubleshooting and quick-repair tools available in cPanel & WHM, including Autofixer, cloud-hosted hostname fixes, restoring database grants, using the scl utility for PHP management, and diagnosing Perl/CGI script issues.
This article explains how ModSecurity 3 works in cPanel & WHM, how to install and configure it for Apache or NGINX, key differences from ModSecurity 2, and how to use the experimental NGINX Standalone web server. It includes configuration paths, warnings, and compatibility notes for production environments.
This article covers three important areas of new cPanel & WHM features: 1) ModSecurity 3 and its differences from version 2 2) NGINX Standalone web server and its limitations 3) How to add and manage Sitejet custom templates to serve cPanel users This guide is written for server administrators, hosting providers, and cPanel partne
This article explains how to configure your SFTP client to securely connect to your cPanel account, what connection details are required, how SFTP differs from FTP, and how to manage or deny FTP access. It also covers how to edit FTP server configurations from the command line for both ProFTP and Pure-FTP environments.
This article explains how to manually edit FTP server configuration from the command line, determine which FTP service is running, and apply configuration changes for both ProFTP and Pure-FTP. It also covers managed_settings options and how to apply updates using force rebuild commands.
This article explains how to enable FTP Passive Mode, the differences between active and passive sessions, how to configure Pure-FTPd and ProFTPD servers, how to adjust NAT-related settings, and how to open passive port ranges in firewalls such as CSF, nftables, firewalld, and iptables. It also covers troubleshooting steps and how to restore missing FTP interfaces in cPanel.
This article explains how to upload and download files using FTP through both third‑party clients and the command‑line interface. It also covers how to connect to an FTP server, required credentials, file transfer commands, and advanced ProFTPD host access control configuration for restricting FTP access by IP address.
This article explains how to manually delete a MySQL database, enable the Slow Query Log in MySQL or MariaDB, resolve PostgreSQL password authentication errors, restore a user’s database access using restoregrants, and install or update PostgreSQL on a cPanel & WHM server.
This article explains why upgrading to the latest stable version of MySQL or MariaDB is essential for security, compatibility, and performance. It also provides a complete step‑by‑step guide for planning, backing up, upgrading, testing, and troubleshooting database upgrades in cPanel & WHM environments.
