nixos-config/config/services/samba.nix

_: {
  services.samba-wsdd.enable = true; # make shares visible for windows 10 clients
  networking.firewall.allowedTCPPorts = [
    5357 # wsdd
  ];
  networking.firewall.allowedUDPPorts = [
    3702 # wsdd
  ];
  services.samba = {
    enable = true;
    securityType = "user";
    extraConfig = ''
      workgroup = WORKGROUP
      server string = nas
      netbios name = nas
      security = user
      #use sendfile = yes
      #max protocol = smb2
      # note: localhost is the ipv6 localhost ::1
      hosts allow = 192.168.2. 127.0.0.1 localhost
      hosts deny = 0.0.0.0/0
      guest account = nobody
      map to guest = bad user
    '';
    shares = {
      winstall = {
        path = "/mnt/win";
        browseable = "yes";
        "read only" = "yes";
        "guest ok" = "yes";
        "create mask" = "0644";
        "directory mask" = "0755";
        "force user" = "nobody";
        "force group" = "users";
      };
    };
    openFirewall = true;
  };
}