ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_dsa_key ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key /usr/sbin/sshd