The Common UNIX Printing System server's behavior is configured through the directives contained in the /etc/cups/cupsd.conf file. The CUPS configuration file follows the same syntax as the primary configuration file for the Apache web server. Users familiar with editing Apache's configuration file should feel at ease when editing the CUPS configuration file.
Note
Warning: Prior to editing the configuration file, you should make a copy of the original file and protect it from writing, so you will have the original settings as a reference, and can re-use it as necessary. Copy the /etc/cups/cupsd.conf file and protect it from writing with the following commands:
$sudo cp /etc/cups/cupsd.conf /etc/cups/cupsd.conf.original
$sudo chmod a-w /etc/cups/cupsd.conf.original
You can then edit the file with your favorite editor.