How can you tell which ports are being used by which programs?

[orientalsniper]

For example there are some Facebook games that don't use port 80 and they are lagging cuz they are being assigned to default nerfed queue. I tried using darkstat but then there are so many ports I can't tell which is which.

[senser]

I would use pftop via ssh or serial console. Launch pftop, order by connection age or something, launch game, check destination ports.