httpd.conf
httpd.conf is a configuration file which is used by the Apache HTTP Server. It stores information on various functions of the server, which can be edited by removing or adding a number sign "#" at the beginning of the line, thus setting values for each directive.
The httpd.conf file can be located on any Unix-based system that complies with the Filesystem Hierarchy Standard under the following path: /etc/httpd/httpd.conf.
This file, httpd.conf was once used in Microsoft's Internet Information Services (IIS).