Passive FTP data connection to the same port

  • Hi all,

    I am using 2.0-RELEASE and outgoing passive FTP with NAT works fine except for an odd ftp server.

    This ftp server sends always the same port for passive data connections.
    The problem is that I can only send/receive data every 2 minutes (maybe a tcp timeout?).

    A tcpdump shows the SYNs and ACKs for the data connection works for the first PASV command. They were sent from the ftp client and then from pfSense.
    But for the following data connections I see only SYNs from the ftp client.
    The client uses always a different source port.

    Bypassing the pfSense works.
    So I assume its a problem with the new FTP helper.

    I would appreciate for any help.


  • Hello Frank,

    I'm sorry I can't help you with your question. Maybe you can help me with passive FTP. I can't get it to work.

    FTP passive inbound works and the server returns a message but it can't go out. PFS blocks the returning message. Would you  like to help me, and what should I provide as info


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