Technology Insights

WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

If you attempt to SSH to a server and receive a message similar to the below:

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@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
23:43:66:2a:ac:53:d9:62:8c:af:03:5f:6b:67:b7:86.
Please contact your system administrator.
Add correct host key in /root/.ssh/known_hosts to get rid of this message.
Offending key in /root/.ssh/known_hosts:5
RSA host key for server.example.com has changed and you have requested strict checking.
Host key verification failed.
lost connection