200 PORT command successful. Consider using PASV. 425 Failed to establish connection

Question

I have setup FTP server in Ubuntu 12.04 LTS.

Now when when I try to connect to FTP server from Windows 7 through command-line ftp.exe, I get successfull

Answer 1

You need to use passive mode.

If you're using linux client, use pftp or ftp -p.

From man ftp:

-p    Use passive mode for data transfers. Allows use of ftp in environments where a firewall prevents connections from the outside world back to the client machine. Requires that the ftp server support the PASV command. This is the default if invoked as pftp.