Protocol 2

ChallengeResponseAuthentication yes
ClientAliveInterval 120
ClientAliveCountMax 2
AuthenticationMethods publickey,password publickey,keyboard-interactive

AllowUsers newuser  root
PermitEmptyPasswords no


#----------- SFTP ENABLEMENT ----------

Subsystem sftp internal-sftp

Match user newuser
  ChrootDirectory /home/newuser
  PasswordAuthentication yes
  X11Forwarding no
  AllowTcpForwarding no
  ForceCommand internal-sftp

systemctl status sshd.service
● sshd.service - OpenSSH server daemon
   Loaded: loaded (/usr/lib/systemd/system/sshd.service; enabled; vendor preset: enabled)
   Active: activating (auto-restart) (Result: exit-code) since Thu 2018-01-18 22:44:22 EST; 36s ago
     Docs: man:sshd(8)
           man:sshd_config(5)
  Process: 13015 ExecStart=/usr/sbin/sshd -D $OPTIONS (code=exited, status=255)
 Main PID: 13015 (code=exited, status=255)

Jan 18 22:44:22 myserver.com systemd[1]: Failed to start OpenSSH server daemon.
Jan 18 22:44:22 myserver.com systemd[1]: Unit sshd.service entered failed state.
Jan 18 22:44:22 myserver.com systemd[1]: sshd.service failed.

OpenSSH_7.4p1, OpenSSL 1.0.2k-fips  26 Jan 2017