![]() In my case, I will remove the the key (highlighted in red) for the destination server 192.168.219.149 from the file /home/user01/.ssh/known_hosts. â If testuser wants to ssh to the server, then remove the entry in the file /home/testuser/.ssh/known_hosts.Ä£. â If root wants to ssh to the server, just removing entry in the /root/.ssh/known_hosts file is all right. Each user in the client/source server has its own known_hosts in its home directory, just remove the entry in the file of a specific user for the destination server. Only if this event is legitimate, and only if it is precisely known why the SSH server presents a different key, then edit the file known_hosts and remove the no longer valid key entry. On the source server, the old keys are stored in the file ~/.ssh/known_hosts.Ä¢. How to correct the âhost key verification failedâ error Method 1 â removing old key manuallyÄ¡. By using the SSH tunnel, the VNC connection to your Ubuntu 20.04 server only allow machines which can ssh to the server. Then, click on 'Add' button as the below: ssh tunnel on putty. ![]() ![]() If you ever get a warning like this, stop and determine whether there is a reason for the remote serverâs host key to change (such as if SSH was upgraded or the server itself was upgraded). RSA host key for 192.168.219.149 has changed and you have requested strict checking. Offending key in /home/lcz/.ssh/known_hosts:7 Please contact your system administrator.Īdd correct host key in /home/user01/.ssh/known_hosts to get rid of this message. It is also possible that the RSA 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!
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