Thanks, hope they fix it since 0 should be 0KB/s and -1 for unlimited

This feature works fine in qBittorrent and uTorrent, both can close the ports after quitting to prevent from hacking.
Hope they fix it.

I have found a small bug in the Scheduler plugin.
If I set the Download limit value to 0, it allows the torrents to download at unlimited speed like -1 value while it should disable it

Why isn't UPnP safe? Good thing with UPnP is that it can close the port when you exit the program.

I have noticed that Deluge doesn't close UPnP ports after quitting