Control Your Network badwidth with Wondershaper in Linux: "If you are a Network Administrator with little knowledge in Network Protocols and IPtables, don't worry you can also controll your network traffic with a simple tool named wondershaper.
Installation:
OpenSuSe 11.2 user can use '1-click' installer to install Wondershaper - here
Ubuntu: sudo apt-get install wondershaper
$ifconfig this will help you to find the network interface (eth0, eth1 or
