presently we get connected to internet using ADSL Router(DLINK, DSL-500T) provided by our ISP, we get connected that router to our PC using "Bridge Mode" and i have installed two lancards on that pc first is using router setting and second is using our LAN i am giving Internet Access to other PCs using my LAN gateway now the problem is from last week or so our ISP has alarmed us of our usage. Generally our downloading and uploading on any work day is approximately 200 MBs and 30 MBs respectively. But we have now the same downloading whereas the uploading creaped upto 800 MBs. Our ISP is saying the problem is in our network not from their end. Two days back we formatted whole of our network to get ourselves satisfied from any virus attack, but of no use and the problem is still persistant.
we have already used sniff-em but it gave out us no result.. if you like to see the Result of scanning sniff-em you can visit here
Could you please provide us the solution for that and oblige.