Protocol 2 # LogLevel VERBOSE HostKey /etc/ssh/host_keys/rsa # https://cipherli.st/ 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-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com PermitRootLogin no PasswordAuthentication no StrictModes no # separated by spaces AllowUsers _ ForceCommand /usr/bin/rrsync /data AllowAgentForwarding no AllowTcpForwarding no GatewayPorts no X11Forwarding no PermitUserEnvironment no PermitTTY no PrintMotd no