The host key’s fingerprint can be checked on the SSH server with a call to
ssh-keygen(1): $ ssh-keygen -lf /etc/ssh/ssh_host_rsa_key 2048
f4:4b:f4:8c:c5:50:f6:c8:d3:b2:e9:14:68:86:b5:7b /etc/ssh/ssh_host_rsa_key.pub (RSA) If you
want, you can check the key without making a connection attempt with a similar call on the
client side: $ ssh-keygen -lF newremote # Host 192.168.0.65 found: line 1 type RSA 2048
f4:4b:f4:8c:c5:50:f6:c8:d3:b2:e9:14:68:86:b5:7b newremote (RSA)