I have a DLink WIFI router with "admin" rights. I want to restrict torrent and other download over network. Please help. I am new to networking.
Two options jump to mind.
If your reason is legality, I would go with option 2 because not all bittorrent is illegal (it's a very effective way to transmit large amounts of data - example: Linux Distros).
If your reason is just bandwidth - then the port method would be more effective. Or a combination of the two. Of course, there are always ways around it if someone is determined enough.