To acces The Common UNIX Printing System (CUPS) Administration on Mac OS X, type this address in your Web Browser:
http://127.0.0.1:631/

About CUPS

CUPS provides a portable printing layer for UNIX®-based operating systems. It is developed and maintained by Apple Inc. to promote a standard printing solution. CUPS is the standard printing system used on MacOS® X and most Linux® distributions.

CUPS uses the Internet Printing Protocol ("IPP") as the basis for managing print jobs and queues and adds network printer browsing and PostScript Printer Description ("PPD") based printing options to support real-world printing.