425 Can't open data connection for transfer of “/”FTP “425 Can't open data connection” only happens...

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425 Can't open data connection for transfer of “/”


FTP “425 Can't open data connection” only happens when using command promptError: The data connection could not be established: ECONNREFUSED - Connection refused by serverFTP - 425 Can't open data connection (Active Mode does not work)FTP with TLS doesn't work, nor can I change port in pure-ftpdFilezilla client cannot retrieve the list files from the serverDirectory listing from FileZilla Server fail with 425 Can't open data connection for transfer of “…”Errors in Configuring FileZilla FTP ServerCan't establish FTP connection outside networkFilezilla FTP Error 425Not able to access ftp from browser













0















I'm trying to solve this error searching the web, without any success.



The error is:




425 Can't open data connection for transfer of "/"




My software:




  • Windows server 2013 and last filezilla server


My topology:




  • Server wired to router - Router with a dynamic IP from ISP, dynamic dns updated.


My settings:




  • PASV mode with ports 51000-61000

  • Retrieve external ip with http://ip.filezilla-project.org/ip.php

  • Enabled FTP over TLS with port 990


Where I opened my ports




  • router: local and public 21, local 51000 public 51000-61000, local and public 990 (ALL tcp)

  • Windows Firewall: both directions, ports 21, 51000-61000, 990.


On my lan it works perfectly. I think there's something wrong with router port forwarding configuration. Here it is.



My port forwarding configuration on router



Is there something I'm doing wrong?



I add a log of my ftp server:



(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PBSZ 0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 PBSZ=0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PROT P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Protection level set to P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PWD
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 257 "/" is current directory.
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> TYPE I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Type set to I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PASV
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 227 Entering Passive Mode (my,ip,addr,ess,205,93)
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> MLSD
(000013)06/11/2017 21:51:07 - user (my.ip.add.ress)> 425 Can't open data connection for transfer of "/"


I add the ftp server configuration screens too just in case.



General Settings



PASV Mode settings



FTP over TLS










share|improve this question














bumped to the homepage by Community 2 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
















  • What is the error from client-side? What client are you using? Does the my,ip,addr,ess in the 227 response match the IP that the client is connecting to?

    – Martin Prikryl
    Nov 7 '17 at 12:57













  • Remote client and server have the same error. my,ip,addr,ess is the correct one.

    – Raikoug
    Nov 7 '17 at 16:56











  • Well, the router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.

    – Martin Prikryl
    Nov 8 '17 at 7:07













  • Well I guess I have few choices: 1) Change router (very hard one, since is ISP provided). --- 2) I have a DMZ option to bypass any port forwarding to my server. Very dangerous I think. --- 3) SFTP, I think all trafic just pass from port 22 or the custom 1 i chose..

    – Raikoug
    Nov 8 '17 at 10:08











  • If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.

    – Martin Prikryl
    Nov 8 '17 at 10:12


















0















I'm trying to solve this error searching the web, without any success.



The error is:




425 Can't open data connection for transfer of "/"




My software:




  • Windows server 2013 and last filezilla server


My topology:




  • Server wired to router - Router with a dynamic IP from ISP, dynamic dns updated.


My settings:




  • PASV mode with ports 51000-61000

  • Retrieve external ip with http://ip.filezilla-project.org/ip.php

  • Enabled FTP over TLS with port 990


Where I opened my ports




  • router: local and public 21, local 51000 public 51000-61000, local and public 990 (ALL tcp)

  • Windows Firewall: both directions, ports 21, 51000-61000, 990.


On my lan it works perfectly. I think there's something wrong with router port forwarding configuration. Here it is.



My port forwarding configuration on router



Is there something I'm doing wrong?



I add a log of my ftp server:



(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PBSZ 0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 PBSZ=0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PROT P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Protection level set to P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PWD
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 257 "/" is current directory.
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> TYPE I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Type set to I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PASV
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 227 Entering Passive Mode (my,ip,addr,ess,205,93)
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> MLSD
(000013)06/11/2017 21:51:07 - user (my.ip.add.ress)> 425 Can't open data connection for transfer of "/"


I add the ftp server configuration screens too just in case.



General Settings



PASV Mode settings



FTP over TLS










share|improve this question














bumped to the homepage by Community 2 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
















  • What is the error from client-side? What client are you using? Does the my,ip,addr,ess in the 227 response match the IP that the client is connecting to?

    – Martin Prikryl
    Nov 7 '17 at 12:57













  • Remote client and server have the same error. my,ip,addr,ess is the correct one.

    – Raikoug
    Nov 7 '17 at 16:56











  • Well, the router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.

    – Martin Prikryl
    Nov 8 '17 at 7:07













  • Well I guess I have few choices: 1) Change router (very hard one, since is ISP provided). --- 2) I have a DMZ option to bypass any port forwarding to my server. Very dangerous I think. --- 3) SFTP, I think all trafic just pass from port 22 or the custom 1 i chose..

    – Raikoug
    Nov 8 '17 at 10:08











  • If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.

    – Martin Prikryl
    Nov 8 '17 at 10:12
















0












0








0


1






I'm trying to solve this error searching the web, without any success.



The error is:




425 Can't open data connection for transfer of "/"




My software:




  • Windows server 2013 and last filezilla server


My topology:




  • Server wired to router - Router with a dynamic IP from ISP, dynamic dns updated.


My settings:




  • PASV mode with ports 51000-61000

  • Retrieve external ip with http://ip.filezilla-project.org/ip.php

  • Enabled FTP over TLS with port 990


Where I opened my ports




  • router: local and public 21, local 51000 public 51000-61000, local and public 990 (ALL tcp)

  • Windows Firewall: both directions, ports 21, 51000-61000, 990.


On my lan it works perfectly. I think there's something wrong with router port forwarding configuration. Here it is.



My port forwarding configuration on router



Is there something I'm doing wrong?



I add a log of my ftp server:



(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PBSZ 0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 PBSZ=0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PROT P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Protection level set to P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PWD
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 257 "/" is current directory.
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> TYPE I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Type set to I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PASV
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 227 Entering Passive Mode (my,ip,addr,ess,205,93)
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> MLSD
(000013)06/11/2017 21:51:07 - user (my.ip.add.ress)> 425 Can't open data connection for transfer of "/"


I add the ftp server configuration screens too just in case.



General Settings



PASV Mode settings



FTP over TLS










share|improve this question














I'm trying to solve this error searching the web, without any success.



The error is:




425 Can't open data connection for transfer of "/"




My software:




  • Windows server 2013 and last filezilla server


My topology:




  • Server wired to router - Router with a dynamic IP from ISP, dynamic dns updated.


My settings:




  • PASV mode with ports 51000-61000

  • Retrieve external ip with http://ip.filezilla-project.org/ip.php

  • Enabled FTP over TLS with port 990


Where I opened my ports




  • router: local and public 21, local 51000 public 51000-61000, local and public 990 (ALL tcp)

  • Windows Firewall: both directions, ports 21, 51000-61000, 990.


On my lan it works perfectly. I think there's something wrong with router port forwarding configuration. Here it is.



My port forwarding configuration on router



Is there something I'm doing wrong?



I add a log of my ftp server:



(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PBSZ 0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 PBSZ=0
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PROT P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Protection level set to P
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PWD
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 257 "/" is current directory.
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> TYPE I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 200 Type set to I
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> PASV
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> 227 Entering Passive Mode (my,ip,addr,ess,205,93)
(000013)06/11/2017 21:50:57 - user (my.ip.add.ress)> MLSD
(000013)06/11/2017 21:51:07 - user (my.ip.add.ress)> 425 Can't open data connection for transfer of "/"


I add the ftp server configuration screens too just in case.



General Settings



PASV Mode settings



FTP over TLS







networking ftp windows-server-2012-r2 filezilla






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 7 '17 at 12:40









RaikougRaikoug

11




11





bumped to the homepage by Community 2 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.







bumped to the homepage by Community 2 mins ago


This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.















  • What is the error from client-side? What client are you using? Does the my,ip,addr,ess in the 227 response match the IP that the client is connecting to?

    – Martin Prikryl
    Nov 7 '17 at 12:57













  • Remote client and server have the same error. my,ip,addr,ess is the correct one.

    – Raikoug
    Nov 7 '17 at 16:56











  • Well, the router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.

    – Martin Prikryl
    Nov 8 '17 at 7:07













  • Well I guess I have few choices: 1) Change router (very hard one, since is ISP provided). --- 2) I have a DMZ option to bypass any port forwarding to my server. Very dangerous I think. --- 3) SFTP, I think all trafic just pass from port 22 or the custom 1 i chose..

    – Raikoug
    Nov 8 '17 at 10:08











  • If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.

    – Martin Prikryl
    Nov 8 '17 at 10:12





















  • What is the error from client-side? What client are you using? Does the my,ip,addr,ess in the 227 response match the IP that the client is connecting to?

    – Martin Prikryl
    Nov 7 '17 at 12:57













  • Remote client and server have the same error. my,ip,addr,ess is the correct one.

    – Raikoug
    Nov 7 '17 at 16:56











  • Well, the router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.

    – Martin Prikryl
    Nov 8 '17 at 7:07













  • Well I guess I have few choices: 1) Change router (very hard one, since is ISP provided). --- 2) I have a DMZ option to bypass any port forwarding to my server. Very dangerous I think. --- 3) SFTP, I think all trafic just pass from port 22 or the custom 1 i chose..

    – Raikoug
    Nov 8 '17 at 10:08











  • If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.

    – Martin Prikryl
    Nov 8 '17 at 10:12



















What is the error from client-side? What client are you using? Does the my,ip,addr,ess in the 227 response match the IP that the client is connecting to?

– Martin Prikryl
Nov 7 '17 at 12:57







What is the error from client-side? What client are you using? Does the my,ip,addr,ess in the 227 response match the IP that the client is connecting to?

– Martin Prikryl
Nov 7 '17 at 12:57















Remote client and server have the same error. my,ip,addr,ess is the correct one.

– Raikoug
Nov 7 '17 at 16:56





Remote client and server have the same error. my,ip,addr,ess is the correct one.

– Raikoug
Nov 7 '17 at 16:56













Well, the router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.

– Martin Prikryl
Nov 8 '17 at 7:07







Well, the router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.

– Martin Prikryl
Nov 8 '17 at 7:07















Well I guess I have few choices: 1) Change router (very hard one, since is ISP provided). --- 2) I have a DMZ option to bypass any port forwarding to my server. Very dangerous I think. --- 3) SFTP, I think all trafic just pass from port 22 or the custom 1 i chose..

– Raikoug
Nov 8 '17 at 10:08





Well I guess I have few choices: 1) Change router (very hard one, since is ISP provided). --- 2) I have a DMZ option to bypass any port forwarding to my server. Very dangerous I think. --- 3) SFTP, I think all trafic just pass from port 22 or the custom 1 i chose..

– Raikoug
Nov 8 '17 at 10:08













If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.

– Martin Prikryl
Nov 8 '17 at 10:12







If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.

– Martin Prikryl
Nov 8 '17 at 10:12












1 Answer
1






active

oldest

votes


















0














The router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.



If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.



See also How many data channel ports do I need for an FTPS server running behind NAT?






share|improve this answer























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    The router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.



    If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.



    See also How many data channel ports do I need for an FTPS server running behind NAT?






    share|improve this answer




























      0














      The router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.



      If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.



      See also How many data channel ports do I need for an FTPS server running behind NAT?






      share|improve this answer


























        0












        0








        0







        The router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.



        If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.



        See also How many data channel ports do I need for an FTPS server running behind NAT?






        share|improve this answer













        The router mapping seems suspicious, as you have correctly guessed. It looks like you have all public ports in range 51000-61000 mapped to a single internal port 51000. What would explain, why the client is not able to connect to port 52573.



        If your router is not able to map a range of internal ports, you can configure your FTP server to use only a narrow range (like 51000-51010) and configure those ports one-by-one.



        See also How many data channel ports do I need for an FTPS server running behind NAT?







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 8 '17 at 10:16









        Martin PrikrylMartin Prikryl

        11.1k43277




        11.1k43277






























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