Thanks for replying, Ray. Actually, I want to do it like SoftPerfect's Bandwidth Manager or NetLimiter, i.e. without using a proxy. I do have some fair knowledge of threading, streams and basic knowledge of sockets but I am willing to spend much time to improve on these areas. There's no haste and I have lots of time on hands to learn all the required stuff. The bottomline is, I just want to do it whether I convert it to a full-blown software or not. Basically, I am looking for guides on how network bandwidth limiting can be done on windows using C# .NET or maybe just generally. For a start, I will probably be testing it on my home network by limiting speed on all ports on my desktop PC. :-D Thanks for help.

Hello, After a long hours of search in google, I wasn't able to find what I was looking for. I need pointers on how to write an application that will let me manage network bandwidth throttling. I want to run a local cable network and instead of relying on a 3rd party software, I want to write on for the sake of learning something new. It surely sounds challenging but I didn't thought it would be that challenging, at beginning. Anyways, I want to limit bytes / sec on a certain IP with ports range etc. Maybe few guides in the right direction please? Any help will be appreciated. Thanks