Peter Rau (Customer) asked a question.

July 14, 2026 at 9:02 PM
If I had a copy of WS_FTP Server, would I be able to connect to a OPENSSH server using ECDSA keys only. I currently have WS_FTP Pro Client, and it fails to connect. Thank you. I'm trying to figure out if I should upgrade.
  • 1 answer
  • 41 views

  • Samik Chakraborty (Progress Software Development)

    @Peter Rau (Customer)​ Hi Peter, Please refer https://community.progress.com/s/article/Supported-SSH-Algo-s

    The WS_FTP PRofessional version 13.0 supports the below Host key algos

     

    ssh-ed25519

    ecdsa-sha2-nistp256

    ecdsa-sha2-nistp384

    ecdsa-sha2-nistp521

    rsa-sha2-512

    rsa-sha2-256

    ssh-rsa

    ssh-dss 

     

    Therefore, if you are running any version older than 13.0 then WS_FTP PRO would not be able to connect to a SFTP HOST using ECDSA or EDSDSA host key as it was not supported in older versions.

     

    Please refer to the KB above and upgrade WS_FTP PRO accordingly.

    Selected as Best

  • Samik Chakraborty (Progress Software Development)

    @Peter Rau (Customer)​ Hi Peter, Please refer https://community.progress.com/s/article/Supported-SSH-Algo-s

    The WS_FTP PRofessional version 13.0 supports the below Host key algos

     

    ssh-ed25519

    ecdsa-sha2-nistp256

    ecdsa-sha2-nistp384

    ecdsa-sha2-nistp521

    rsa-sha2-512

    rsa-sha2-256

    ssh-rsa

    ssh-dss 

     

    Therefore, if you are running any version older than 13.0 then WS_FTP PRO would not be able to connect to a SFTP HOST using ECDSA or EDSDSA host key as it was not supported in older versions.

     

    Please refer to the KB above and upgrade WS_FTP PRO accordingly.

    Selected as Best