I have an interent connection with the speed of 4000k bits up and down. I want to do port based traffic shaping on a ubuntu machine, which acts as router. eth0 is the WAN interface. This is how I would like to allocate bandwidth:

• For ports 80 and 445 the bandwidth usage can go upto 90%
• For ports above 1024 upto 65535 the bandwidth usage can go upto 10%
• For remaining ports the bandwidth usage can go upto 40%

The easiest way for achieving the above is using a router with tomato firmware. I have used it and it is very efficient. I want to try if it can be done on a Ubuntu or any GNU/Linux machine. I have googled extensively about the topic and I feel there isn't much information.