Alte SSH host keys aus der Datei known_hosts entfernen
Bei mir zuhause arbeite ich häufiger mal über SSH auf einem Linux-Server. Wenn man den Server dann neu aufsetzt und bei der Installation des SSH-Deamons neue Keys generiert werden, hat man beim Einloggen u.U. Probleme. Folgende Meldung könnte dann beim Herstellen der SSH-Verbindung auftreten:
jan@klappkommode:~$ ssh jan@192.168.1.3
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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
**:**:**:**:**:**:**:**:**:**:**:**:**:**:**:**.
Please contact your system administrator.
Add correct host key in /home/jan/.ssh/known_hosts to get rid of this message.
Offending key in /home/jan/.ssh/known_hosts:2
RSA host key for 192.168.1.3 has changed and you have requested strict checking.
Host key verification failed.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ 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.
The fingerprint for the RSA key sent by the remote host is
**:**:**:**:**:**:**:**:**:**:**:**:**:**:**:**.
Please contact your system administrator.
Add correct host key in /home/jan/.ssh/known_hosts to get rid of this message.
Offending key in /home/jan/.ssh/known_hosts:2
RSA host key for 192.168.1.3 has changed and you have requested strict checking.
Host key verification failed.