Response: 425 rejected data connection for transfer of '/', IP addresses of control and data connection do

Reference: Http://geekswithblogs.net/Lance/archive/2008/01/24/ftp-error-425-quotcant-open-data-connection.quot.aspx

Using Filezilla_3.30.0_win64-setup_bundled.exe to connect to the server, the following error is indicated:

Response: 425 rejected data connection for transfer of "/", IP addresses of control and data connection does not match

The Foreigner's saying:

FTP error 425, "Can ' t Open data connection."  Comments (57) | Share

One of the most common questions I get about FTP have to do with error 425, "Can ' t Open data connection."  This was indeed a protocol level error, which is defined in the RFC. Its meaning are obvious:the data connection (for a directory listing, upload, or download) were unable to be established.

First-the most common Solution:change the active/passive mode settings. But this might not work, and if it does it is only a Band-Aid covering up the real problem.

As I ' ve mentioned in the past, one of the most common reasons so this error occurs is a misconfiguration of the FTP serv Er software itself, related to SSL connections and firewalls, in which the connection tries to establish itself on a bogus  IP address. Read more on FTP SSL through a NAT firewall here, some potential solutions is included.

There is and less likely causes, such as:the server was configured to always use the same port for passive mode connect Ions, or the client is configured to always use the same port for active mode connections, although in this case usually t He software in question should raise a different error first, but I ' ve seen this happen.  In passive mode, the firewall in front of the FTP server doesn ' t has the correct ports open. So the server tells the client to connect to IPAddress 1.2.3.4 on Port x, and the firewall doesn ' t allow incoming connecti  ONS on Port X.  Most firewalls is smart enough to open and the port when it sees the PASV response. Vice Versa for Active mode and the firewall in front of the FTP client. ----------------------------------------Workaround: When connecting to a server, encrypt type select FTP ...