In the example above, the message indicates that there is an entry for the server located on line 10 of the known_hosts file that needs to be removed. If you are unable to get past this error message, you will need to remove the old host key entry inside the known_hosts file. RSA host key for has changed and you have requested strict checking. Offending RSA key in /Users/me/.ssh/known_hosts:10 Please contact your system administrator.Īdd correct host key in /Users/me/.ssh/known_hosts to get rid of this message. The fingerprint for the RSA key sent by the remote host is

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)! WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

The CAT periodically updates the SSH host keys on its servers for security purposes, which can result in users seeing an error message similar to below when attempting to connect with an MCECS Linux system.

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