[Web] Set Fail2ban subnet sizes

data/web/inc/header.inc.php

@@ -4,6 +4,7 @@
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=device-width, initial-scale=1">
+<meta http-equiv="Referrer-Policy" content="same-origin">
 <title><?=$UI_TEXTS['title_name'];?></title>
 <!--[if lt IE 9]>
   <script src="/js/html5shiv.min.js"></script>