If you are connecting from a machine running an X server able to SSH has the advantages of speed and accessibility, but it lacks a graphical user The check and create a new entry for your VM. Is the line we need to remove from that text file, in this way our ssh client will not fail Then it’s safe to edit the file (in this case) /Users/username/.ssh/known_hostsĪnd as can be seen line 1 ( Offending ECDSA key in /Users/username/.ssh/known_hosts:1) Of the semester, if this happens the first time you are connecting to it This is normally due to the fact that your VM was recreated at the start Offending ECDSA key in /Users/username/.ssh/known_hosts:1 ECDSA host key for linkblue.cs.uky.edu has changed and you have requested strict checking. Add correct host key in /Users/username/.ssh/known_hosts to get rid of this message. Please contact your system administrator. WARNING: POSSIBLE DNS SPOOFING DETECTED! The ECDSA host key for linkblue.cs.uky.edu has changed, and the key for the corresponding IP address 172.31.112.111 is unknown.

Ubuntu nomachine authentication failed