Get SSH Server Key Fingerprint
Obtain SSH server key fingerprint without trying to login to the server.
To prevent man-in-the-middle attacks, SSH server have private keys. This private key is used to secure the session between the client and the server. Public keys for these servers are stored in ~/.ssh/known_hosts file on the client machine.
You can get the fingerprint with the following command:
$HOST=<hostname>; ssh-keyscan host | ssh-keygen -lf -
Where:
- hostname: server IP or hostname
For example, in the following command we can get the key fingerprints for example.com:
$HOST=example.com; ssh-keyscan host | ssh-keygen -lf -