9/6/2023 0 Comments Mobaxterm keygen![]() This tells which is the offending host, so now you can remove that key by running: ~]ssh-keygen -R HOSTNAME If you look at the error message you will notice this line: RSA host key for has changed. Before you remove the file you should back up the contents: cp ~/.ssh/known_hosts ~/.ssh/known_hosts.old ~]rm ~/.ssh/known_hosts Method 2 - Targeting the Key Individually The file will be recreated the next time you ssh into that computer. If you only have one host in your know_host file then removing the entire file is a solution. If you have a smaller screen the key will continue on to the next line, but is still counted as one line. You will notice the file is arranged: computer name, ip-address veryLongKey, where each line is its own computer and key. It can be opened in a text editor of your choice with: ~]vim ~/.ssh/known_hosts Linux / Mac / Windows with MobaXterm Finding the known_hosts File:Īfter you have connected to a computer using ssh, the key you used to connected is stored in a file called known_hosts which is located in a hidden file (.ssh) in your home directory. This error will occur when the public key the host has changes.To fix this we must remove the key causing the error. ![]() The purpose of the known_hosts file is for the client to authenticate the server they are connecting to. Offending key in /home/user/.ssh/known_hosts:1 RSA host key for has changed and you have requested strict checking. Add correct host key in /home/user/.ssh/known_hosts to get rid of this message. ![]() Please contact your system administrator. Sometimes when connecting to a computer with SSH, things can get jumbled up and an error can occur that looks like this: 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. ![]()
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