In this guide, I will give you some idea about how to implement Shieldon Firewall on your Yii application.

Firewall in Yii Framework


Use PHP Composer:

composer require shieldon/shieldon


Yii 2

1. Before initializing Kernal

In your public/index.php, before this line:

require __DIR__ . '/../vendor/yiisoft/yii2/Yii.php';

Add the following code:

| Run The Shieldon Firewall
| Shieldon Firewall will watch all HTTP requests coming to your website.
| Running Shieldon Firewall before initializing Yii will avoid possible
| conflicts with Yii's built-in functions.

if (isset($_SERVER['REQUEST_URI'])) {

    // Notice that this directory must be writable.
    $firewallstorage = __DIR__ . '/../runtime/shieldon';

    $firewall = new \Shieldon\Firewall($firewallstorage);

2. Define a Route for Firewall Panel.

Create a controller named FirewallPanelController.

The content would be the code below:


namespace app\controllers;

use yii\web\Controller;

class FirewallPanelController extends Controller
    public function beforeAction($action)
        $this->enableCsrfValidation = false;

        return parent::beforeAction($action);

     * The entry point of the Firewall Panel.
     * @return string
    public function actionIndex()
        // Get Firewall instance from Shieldon Container.
        $firewall = \Shieldon\Container::get('firewall');

        // Get into the Firewall Panel.
        $controlPanel = new \Shieldon\FirewallPanel($firewall);


Make sure that enablePrettyUrl is true in your config/web.php

'urlManager' => [
    'enablePrettyUrl' => true,
    'showScriptName' => false,
    'rules' => [

That's it.

You can access the Firewall Panel by /firewall-panel, to see the page, go to this URL in your browser.


The default login is shieldon_user and password is shieldon_pass. After logging in the Firewall Panel, the first thing you need to do is to change the login and password.

Shieldon Firewall will start watching your website if it get enabled in Deamon setting section, make sure you have set up the settings correctly.