Do you also experience this problem if you're using a dedicated FTP client program not written in PHP?
The connection failed, FileZilla Server told the client exactly that. No idea why the connection failed. However, the client not sending another command for over a minute, that's most definitely a clientside problem.
Quote:
(000099) 29-04-2013 12:57:32 - ftpsync (10.77.2.254)> LIST /Imagens/Ambientes/Ambientes/Kerlite/Geoquartz
(000099) 29-04-2013 12:57:32 - ftpsync (10.77.2.254)> 150 Opening data channel for directory list.
(000099) 29-04-2013 12:57:42 - ftpsync (10.77.2.254)> 425 Can't open data connection.
(000099) 29-04-2013 12:59:02 - ftpsync (10.77.2.254)> PORT 10,77,2,254,58,46
(000099) 29-04-2013 12:57:32 - ftpsync (10.77.2.254)> 150 Opening data channel for directory list.
(000099) 29-04-2013 12:57:42 - ftpsync (10.77.2.254)> 425 Can't open data connection.
(000099) 29-04-2013 12:59:02 - ftpsync (10.77.2.254)> PORT 10,77,2,254,58,46
The connection failed, FileZilla Server told the client exactly that. No idea why the connection failed. However, the client not sending another command for over a minute, that's most definitely a clientside problem.