RSA Key Fingerprints
Categories: Connect & Login
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Occasionally, you may receive an error message upon logging in to a system such as the following:
@@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @@ 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.
This can be a result of normal system maintenance that results in a changed RSA public key, or could be an actual security incident. If the RSA fingerprint displayed by your SSH client does not match the OLCF-authorized RSA fingerprint for the machine you are accessing, do not continue authentication; instead, contact email@example.com.