FTP Remote access not working.

[profwalken]

Hi,
need some help with setting up a new FTP server(proftpd) for remote access.
I do a backup from remote machines on which I can't change anything.

My new FTP service is running properly only from LAN, but not working when from remote.
FTP server is behind a NAT box with public static IP and FQDN pointing there.
Have set a specific port and created a NAT RULE to forward to Lan IP server address
From Lan no problem, I see folder and files

When I Filezilla from outside Lan using:
ftp://FQDN:port/
ftp://IP PUBLIC:port/
Same result, access to FTP server is done (so client and server speak) but no way to access folder
each time got this:
Server sent passive reply with unroutable address. Using server address instead.

don't know what to change in settings to get a working remote access
Any help greatly appreciated

 

[wkn]

Why not using SFTP over SSHd? Secured connection and better setup over routers between NAS and client (only one port 22 and not two or more ports with FTP active or passive).

 

[profwalken]

OK , need to improve my knowledge about how to setup SFTP