At the office, we have a small network with a NAS with build-in FTP. We have recently moved, and I have been tasked to check if it is possible to get the FTP up and running.
I have managed to get the FTP up and running, and I can access it within our own network. When I try to access from home, I keep getting the message (using filezilla):
Connection established, waiting for welcome message... Connection timed out after 20 seconds of inactivity Could not connect to server
The setup: Router: Linksys WRT1900AC with port forwarding activated (Port 21, both TCP and UDP, see image)
NAS: Qnap TS-1079 Pro with FTP server activated
Switch: Linksys LGS318 (with no special setup as far as I know)
Things I have tried: Disable the Router firewall and filters Made a port range forward for 50000-51000 (and adjusted FTP servers passive FTP port range) Tried from more than one machine, over a period on 2-3 days, rebooted all the equipment
Is there anything obvious I'm missing? Also if something need clarification/screenshots/logs etc.