$remote = $HTTP_SERVER_VARS["REMOTE_HOST"];
  $remote = $remote . ' [' . $HTTP_SERVER_VARS["REMOTE_ADDR"] . ']';
  if($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"] != "") {
    $remote = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"] . " via " . $remote;
  }
  $agent = $HTTP_SERVER_VARS["HTTP_USER_AGENT"];