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No matching host key type found (3 posts)

  • Started 3 weeks ago by Glenn Simpson
  • Latest reply 3 weeks ago from Glenn Simpson
  • Glenn Simpson Member

    I am an IT administrator managing an FTP/SFTP server. I have a user trying to connect to my FTP using Fetch, using SFTP. When she tries to connect, with Connect Using: being SFTP and Enable Encryption checked, she gets an error: Server responded: "Unable to negotiate with (IP:port 22): no matching host key type found. Their offer: ssh-dss" What do we need to change on the user's side or my side to make this work? I would rather not allow some sort of older type that we are not currently allowing if possible.

    Posted 3 weeks ago #

  • Jim Matthews Administrator

    Hi,

    Newer versions of OpenSSH (like the one that your user is running) have deprecated use of DSA keys for security reasons:

    https://security.stackexchange.com/questions/112802/why-openssh-deprecated-dsa-keys

    To fix this problem you can upgrade your server to offer an RSA host key, or the user can configure their copy of OpenSSH to continue to support DSA keys.

    Thanks,

    Jim Matthews
    Fetch Softworks

    Posted 3 weeks ago #

  • Glenn Simpson Member

    I see. I think I had to keep DSA for another client, so will figure out which way we want to go. Thanks.

    Posted 3 weeks ago #

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