Those poor customers whose internet providers
moved them behind a NAT face an outgoing connection issue fro torrents. Open
ports whatever you want, you can’t really do much – ISP’s NAT is beyond
your control. While you still can download torrents, uploading is out of the
question, which is bad for your ratings.
However I accidentally came across a port number 63222, which changed the
yellow triangle in uTorrent to a green tick, and the app started to upload!
I don’t if it this port or just a local peer which suddenly appeared, but
torrents stated to upload when connect through all of the 3 ISPs available
for me, including a mobile one.