How to limit internet speed? [duplicate]

Wondershaper POWER!!!

Here is a tutorial - http://www.ubuntugeek.com/use-bandwidth-shapers-wondershaper-or-trickle-to-limit-internet-connection-speed.html

Basically you can regulate the speed of any PC that connects.

Here is a WIP for a FrontEnd - http://ubuntuforums.org/showthread.php?t=442200

MasterShaper Web Interface - http://www.mastershaper.org/index.php/Main_Page