I need to monitor traffic coming in and out of my server. Knowing the total in/out bandwidth is good, but ideally I would like to know how much traffic was sent to what address (we are talking about static IP addresses).
Is there a tool that would allow me to track bandwidth usage by destination/source?
Alternatively, can you recommend a good library or API for implementing such a functionality?
Note: At this stage I am looking for a Windows-based tool, but I would like to know of options available for any platform.