ea4 | cPanel & WHM Documentation

EasyApache 4 Release Notes

These release notes list any new, updated, or deprecated features in EasyApache 4.

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.

Advanced PHP Configuration

This document provides advanced PHP configuration file information.

Apache Module: Brotli

The mod_brotli Apache module provides compression for the Apache HTTP server.

Apache Module: cPanel

The mod_cpanel Apache module replaces the _Optimize .htaccess (AllowOverride)_ feature.

Apache Module: Evasive

This 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

This module provides Lua hooks for httpd request processing.

Apache Module: ModSecurity®

The mod_security2 Apache module provides the ModSecurity web application firewall for Apache.

Apache Module: ModSecurity® SDBM Utility

cPanel & WHM provides the ModSecurity SDBM utility to purge expired entries from the /var/cpanel/secdatadir/ip.pag cache file.

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 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.