Httpd.conf is an apache configuration file that is created when the Apache web server software is installed on a Linux server. If you are running the cPanel Web-hosting management software on your Web server, you can alter the properties of the httpd.conf file through the cPanel graphical user interface.
Log in to WHM/cPanel as the root user.
Open the "Service Configuration" section.
Open the "Apache Configuration" section.
Click "Global Configuration" to access the httpd.conf's settings, as displayed through cPanel.
Make your desired changes, then click the "Save" button. This saves the changes and then reboots Apache so that the changes are applied.