I have a network of 18 users , I have a E 1 line dropped which feeds Internet bandwidth if 512 Dedicated bandwidth. I just terminate my Router to my Switch and rest of all users use internet . No domain , no workgroup . after one month of running like this , last two days my whole internet got very slow , and I called ISP , they told your bandwidth is chocked . on the other way around i just could not see which computer is uploading or downloading that much .
My queston is how i can see , which computer is downloading , which bandwidth monitor is there , again it is hard to figure out which user is this , but i think i will use some social Eng to find out the user , moreover it could be a worm or some Virus which is utilizing the Link at its full .