[sc name=“head_betriebsmeldungen_en“ message_id=“202009040830″ time=“from now on“ affected=“gitlab user“ impact=“Warning is displayed“ ]
Due to a configuration change in the SSH Server of GWDG Gitlab some SSH
Clients may show the following warning upon a connection attempt:
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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 a host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
SHA256:rdwDod03HKo1TJp1MRPJnrBhnYP7yzRHcMRJ9qU5ZRs.
Please contact your system administrator.
Add correct host key in /home/benutzername/.ssh/known_hosts to get rid
of this message.
Offending ECDSA key in /home/benutzername/.ssh/known_hosts:1234
RSA host key for gitlab.gwdg.de has changed and you have requested
strict checking.
Host key verification failed.
This is intentional and the key with the fingerprint
SHA256:rdwDod03HKo1TJp1MRPJnrBhnYP7yzRHcMRJ9qU5ZRs can be trusted.