Hi John, Thanks I will check at the firewall team to see if any restrictions are in place.
Also I understand that this can also be configured in the Apache FTP server configuration file using the "data connection", "active" element. But in our configuration file, i see this active element is completely missing. Can we assume that the active connections are supported by default by the Apache Mina FTP server since this entry is missing in the config file? and this must be an issue only due to firewall or router restrictions? Thanks Bala. --------------------------------------------------------------------------------------------- Subject: Re: 425 Can't open data connection from Windows Command Prompt Only From: John Hartnup <john.hart...@gmail.com> To: ftpserver-users@mina.apache.org Content-Type: multipart/alternative; boundary=047d7b6224349672b204d4963b46 X-Virus-Checked: Checked by ClamAV on apache.org --047d7b6224349672b204d4963b46 Content-Type: text/plain; charset=ISO-8859-1 Filezilla is probably using passive mode for data connections, whereas the Windows CLI client is using active data connections. Your firewall or NAS router is failing to handle the active connections from the server to your client. Last I checked, there was no support for passive mode in the standard Windows CLI client. http://passive-ftp.com/ is a clone of ftp.exe that does passive mode. ________________________________ From: Murthy, Balamurugan /External Sent: Thursday, January 31, 2013 2:49 PM To: ftpserver-users@mina.apache.org Subject: 425 Can't open data connection from Windows Command Prompt Only Hi Recently we had migrated from PureFTPD to Apache Mina FTP server and we are observing issues with customers using command line can login successfully but unable to do listing / put / get files. This error is observed only in Windows command prompt and file transfers work fine if a FTP client like Filezilla is used. The logs show "SENT: 425 Can't open data connection" error. Sample error logs for a user is pasted below. Can someone help in resolving this or point to a resource which i can refer to resolve this? RECEIVED: USER abcd-1 SENT: 331 User name okay, need password for abcd-1. RECEIVED: PASS ***** Performing AuthD authentication ... [Auth Status: 1, Homepage: /data/test1/homepages/8/2d/3b273db2f3b7b6628203a94d2a9f6, Alloted Quota: 25600000 bytes] AuthD authentication Successful!! Login success - abcd-1 abcd-1 is user#10 of the maximum 400 allowed. SENT: 230 User logged in, proceed. RECEIVED: SYST SENT: 215 UNIX Type: Apache FtpServer RECEIVED: FEAT SENT: 211-Extensions supported RECEIVED: OPTS UTF8 ON SENT: 200 Command OPTS okay. RECEIVED: PWD SENT: 257 "/" is current directory. RECEIVED: TYPE I SENT: 200 Command TYPE okay. RECEIVED: PASV SENT: 227 Entering Passive Mode (131,177,70,50,176,22) RECEIVED: LIST Releasing unreserved passive port: 45078 SENT: 150 File status okay; about to open data connection. SENT: 226 Closing data connection. CLOSED Thanks Bala.