# 6.6: Ubuntu 14 # 7.2: Ubuntu 16 ssh_hardening_hostkeys: - ed25519 ssh_hardening_opts: KexAlgorithms: - curve25519-sha256@libssh.org - diffie-hellman-group-exchange-sha256 Ciphers: - chacha20-poly1305@openssh.com - aes256-gcm@openssh.com - aes128-gcm@openssh.com - aes256-ctr - aes192-ctr - aes128-ctr MACs: - hmac-sha2-256-etm@openssh.com - hmac-sha2-512-etm@openssh.com - umac-128-etm@openssh.com