Port 21.
The connection is made fine. It’s when cronmetar and ftpdown tell the server to send the file. That’s when the Permission Denied error shows up. You can see it I the capture I posted. You see the IP address of the server with ftp appended to it since I’m using the standard ftp port.
At this point I can get the file myself. Does cronmetar do anything to the fore after it’s downloaded to the metar directory?