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Former Member

FTPEx: 425 Possible PASV port theft, cannot open data connection..

Hi All,

I am getting the below the error while comminicating to FTP server.

Delivery of the message to the application using connection File_http://sap.com/xi/XI/System failed, due to: com.sap.aii.af.ra.ms.api.RecoverableException: Possible PASV port theft, cannot open data connection.: com.sap.aii.adapter.file.ftp.FTPEx: 425 Possible PASV port theft, cannot open data connection..

This error is random. Some times service is working is fine and some times its failed to process.

Can any one suggest me the peramnent solution for this.

Thanks & regards,

Kartikeya

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2 Answers

  • Best Answer
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    Former Member
    Feb 22, 2009 at 10:37 AM

    Hi

    The reason for the error is

    The ip address (+port) is not same for both these operations

    - Control connection

    - Data Connection

    Changing active/passive mode settings might help (as a common solution).

    Problem can occur due to below settings,

    - FTP server/ Firewall on its side (affects Passive Mode)

    - FTP client/ Firewall on its side (affects Active Mode)

    After Initial Control connection is made, the below happens for Data connection

    When Active, the CLIENT opens a dynamic port for DC on which it would be listening, for the server to bind its source port

    When Passive, the SERVER opens a dynamic port for DC on which it would be listening for the client to bind its source port

    when the firewall on Server side does not have these ports open, you get the above error.

    The error could be because of other reasons also, but I suspect that the dynamic port is out range of the ports opened at your FTP server firewall.

    So now I think you are one step forward to fix the issue 😊

    Regards

    Vishnu

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    Former Member
    Feb 22, 2009 at 09:02 AM

    if it is in SSL zone then you need to ask the FTP servermaintenance team what is the mode type to beused may be try it active mode

    Rajesh

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