Customize Your Installation
This document describes how to customize your cPanel & WHM installation.
whmadvanced
WHM
It's important to perform some basic tasks after you install cPanel & WHM.
Troubleshoot Your Installation
This document describes how to troubleshoot problems with your cPanel & WHM installation.
1:1 NAT
When you install cPanel & WHM, the installer will detect whether your server resides on a NAT-configured network.
About Apache
EasyApache 4 installs and manages the Apache web server and all of its components.
About EasyApache 4
EasyApache 4 installs, configures, updates, and validates your web server and its components, including PHP.
About PHP
EasyApache allows you to easily install and modify PHP for your server.
Account Suspension Versus Bandwidth Limiting and Account Termination
This document explains the differences between account suspension, bandwidth limiting, and account termination.
Advanced Apache Configuration
EasyApache 4 provides several ways for you to customize your Apache configuration.
Advanced Apache Configuration - The paths.conf File
To improve future compatibility within the cPanel & WHM codebase, we eliminated the use of hardcoded paths to refer to Apache files and directories.
Apache Module — cPanel
The mod_cpanel Apache module replaces the _Optimize .htaccess (AllowOverride)_ feature.
Apache Module — Evasive
The mod_evasive Apache module provides DoS, DDoS, and brute force attack protection.
Apache Module — FCGId
The mod_fcgid Apache module provides an alternative module to the mod_cgi Apache module.
Apache Module — HTTP2
The mod_http2 Apache module provides HTTP/2 support for the Apache HTTP server.
Apache Module — Lua
The mod_http2 Apache module provides Lua hooks for httpd request processing.
Apache Module — MPM ITK
The mod_mpm_itk Apache module causes the Apache process to switch to the domain owner's user identifier (UID) and group identifier (GID) before it responds to the request.
Apache Module — Ruid2
The mod_ruid2 Apache module is a per-request module that allows a domain's HTTP requests to run as the owner of that domain.
Apache vs. PHP-FPM Bottleneck with Child Processes
Apache servers that use the `prefork` MPM with fewer server instances than the maximum number of PHP-FPM child processes may experience performance issues. This document explains how to resolve this dependency issue.
AutoConfig and Autodiscover
The AutoConfigure (AutoConfig) and Autodiscover services quickly and easily configure a user's mail client to receive their cPanel email.
Calendar and Contacts Server Release Notes
This document provides the list of updated features for the Calendar and Contacts Server (CCS) plugin.