FTP Port Forward Question

[Mark070]

Hey Guys,

Was setting up a quick FTP Server on my Synology NAS. I was having difficulty with trying to connect to the FTP server (NAS) over the internet, as in, it could not.

I could connect just find on the local network, just not through the WAN interface.
I ultimately was able to get it to go using SFTP (port 22), but why would FTP over TLS (port 21) not work?

I have attached my Synology setup as well as my Edge Router Port forwarding page. I have both ports forwarded correctly, but cannot connect through port 21

 

[ColinTaylor]

You also need to forward the PASV ports 55536:56047 if the NAS doesn't do that automatically via UPnP.

 

[Mark070]

Yup, tried that as well. Filezilla stayed at Attempting to Connect... would not connect (over the WAN)

 

[ColinTaylor]

Filezilla can be rather unforgiving with non-compliant servers. Just saying....

Change Filezilla's debug setting from 0-None to 2-Info. That should show you what's happening.

 

[ColinTaylor]

Also... Tick the "Report external IP in PASV mode".