The authenticity of host ' (192.168.1.1)' can 't be established.ĮCDSA key fingerprint is SHA256:hotsxb/qVi1/ycUU2wXF6mfGH++Yk7WYZv0r+tIhg4I.Īre you sure you want to continue connecting (yes/no)? This is done after first connecting to the server, and will prompt you with a message like this: $ ssh When you connect to a server via SSH, it gets a fingerprint for the ECDSA key, which it then saves to your home directory under ~/.ssh/known_hosts. Offending ECDSA key in /Users/scott/.ssh/known_hosts:47ĮCDSA host key for has changed and you have requested strict checking. Please contact your system administrator.Īdd correct host key in /Users/scott/.ssh/known_hosts to get rid of this message. SHA256:hotsxb/qVi1/ycUU2wXF6mfGH++Yk7WYZv0r+tIhg4I. The fingerprint for the ECDSA key sent by the remote host is
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It is also possible that a host key has just been changed. Someone could be eavesdropping on you right now (man-in-the-middle attack)! Because of this, there are quite a few checks built-in to the popular SSH clients, like OpenSSH, that ensure your connection can't be compromised.Īn example of one of these checks is the following, which identifies when the fingerprint of a server has changed: $ ssh WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
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Remove ssh key mac free#
It aims at ensuring that your connection, and therefore all data passed, is free from eavesdropping. SSH, or Secure Shell, is a very common way to securely access remote machines, typically via the command line.