How Do You Remove the ECDSA Fingerprints of Old Servers That You Will Not Connect to Again?

Problem scenario
You have a server that has run SSH to connect to other servers. You want to remove the fingerprints so the ECDSA key fingerprint will challenge a user to continue connecting. What do you do?

Run this command where x.x.x.x is the IP address or hostname of the server whose finger print should be removed: ssh-keygen -R x.x.x.x

If you used a hostname with the SSH comands, use a hostname in the command above. If you used an IP address with the SSH commands, use the IP address in the command above.

Leave a comment

Your email address will not be published. Required fields are marked *