Hi,
We've had Filezilla FTP server running on our server for years now without any problems.
We recently moved from a self hosted environment to a virtual one and P2V'd our FTP server.
Ever since then one customer can't FTP files to us.
They have a program that collates xml files, zips them and sends them to us.
I've noticed in the log file that they are issuing an EPSV command (twice) then an EPRT (which I thought we should be ignoring?)
They then get as far as trying to open the data channel and it fails with a 425 error.
I've asked the company hosting the servers to investigate their firewall and they can't see anything that could be causing this.
They have also opened all ports from the customers IP to this server and the transfer still fails.
Can anyone offer any thoughts? All other FTP connections work fine.
(003548) 19/06/2013 09:53:54 - (not logged in) (195.69.xxx.xx)> Connected, sending welcome message...
(003548) 19/06/2013 09:53:54 - (not logged in) (195.69.xxx.xx)> 220-FileZilla Server version 0.9.23 beta
(003548) 19/06/2013 09:53:54 - (not logged in) (195.69.xxx.xx)> 220 Welcome to our FTP Server
(003548) 19/06/2013 09:53:54 - (not logged in) (195.69.xxx.xx)> USER xxxx
(003548) 19/06/2013 09:53:54 - (not logged in) (195.69.xxx.xx)> 331 Password required for xxxx
(003548) 19/06/2013 09:53:54 - (not logged in) (195.69.xxx.xx)> PASS xxxx
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> 230 Logged on
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> CWD ToCompanyName
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> 250 CWD successful. "/ToCompanyName" is current directory.
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> TYPE I
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> 200 Type set to I
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> EPSV ALL
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> 229 Entering Extended Passive Mode (|||1816|)
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> EPSV
(003548) 19/06/2013 09:53:54 - ftpusername (195.69.xxx.xx)> 229 Entering Extended Passive Mode (|||1817|)
(003548) 19/06/2013 09:54:16 - ftpusername (195.69.xxx.xx)> EPRT |1|195.69.xxx.xx|2765|
(003548) 19/06/2013 09:54:16 - ftpusername (195.69.xxx.xx)> 200 Port command successful
(003548) 19/06/2013 09:54:16 - ftpusername (195.69.xxx.xx)> STOR LAAD3_alice.willoughby_20130619_095354.zip
(003548) 19/06/2013 09:54:16 - ftpusername (195.69.xxx.xx)> 150 Opening data channel for file transfer.
(003548) 19/06/2013 09:54:26 - ftpusername (195.69.xxx.xx)> 425 Can't open data connection.
(003548) 19/06/2013 10:04:26 - ftpusername (195.69.xxx.xx)> 421 Connection timed out.
(003548) 19/06/2013 10:04:26 - ftpusername (195.69.xxx.xx)> disconnected.
Another thing you could do is look in the logs and see if anyone else is using EPSV or if your other clients are all using PASV (tradition passive mode) and PORT (active mode) for their data channels.