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ssh-keyscan

Get the public ssh keys of remote hosts.

  • Retrieve all public ssh keys of a remote host:

ssh-keyscan {{host}}

  • Retrieve all public ssh keys of a remote host listening on a specific port:

ssh-keyscan -p {{port}} {{host}}

  • Retrieve certain types of public ssh keys of a remote host:

ssh-keyscan -t {{rsa,dsa,ecdsa,ed25519}} {{host}}

  • Manually update the ssh known_hosts file with the fingerprint of a given host:

ssh-keyscan -H {{host}} >> ~/.ssh/known_hosts