dotfiles-nixos/nixos/modules/ssh.nix

{ config, lib, pkgs, ... }:

{
  services.openssh = {
    enable = true;
    settings = {
      # Forbid root login through SSH.
      PermitRootLogin = "no";
      # Use keys only. Remove if you want to SSH using password (not recommended)
      PasswordAuthentication = false;
    };
  };
}