# /etc/ssh/ssh_config.d/modern-ssh.conf

CASignatureAlgorithms ssh-ed25519
Ciphers chacha20-poly1305@openssh.com
HostbasedKeyTypes sk-ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519
HostKeyAlgorithms sk-ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519
KexAlgorithms sntrup761x25519-sha512@openssh.com,curve25519-sha256@libssh.org,curve25519-sha256
MACs umac-128-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com
PubkeyAcceptedKeyTypes sk-ssh-ed25519-cert-v01@openssh.com,sk-ssh-ed25519@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-ed25519