{ ... }:

{
  services = {
    openssh = {
      enable = true;
      settings = {
        PermitEmptyPasswords = "no";
        PermitRootLogin = "prohibit-password";
        PasswordAuthentication = false;
        KbdInteractiveAuthentication = false;
      };
    };
    sshguard = {
      enable = true;
      services = [ "sshd" ];
    };
  };
}