diff --git a/app/Config/Filters.php b/app/Config/Filters.php
index eb46a1d..b641d98 100644
--- a/app/Config/Filters.php
+++ b/app/Config/Filters.php
@@ -12,7 +12,7 @@ use CodeIgniter\Filters\InvalidChars;
 use CodeIgniter\Filters\PageCache;
 use CodeIgniter\Filters\PerformanceMetrics;
 use CodeIgniter\Filters\SecureHeaders;
-
+use App\Filters\SignedUrlFilter;
 class Filters extends BaseFilters
 {
     /**
@@ -34,6 +34,7 @@ class Filters extends BaseFilters
         'forcehttps'    => ForceHTTPS::class,
         'pagecache'     => PageCache::class,
         'performance'   => PerformanceMetrics::class,
+        'signedUrl' => SignedUrlFilter::class,
     ];
 
     /**
diff --git a/app/Config/Logger.php b/app/Config/Logger.php
index ab6997e..1c7fb90 100644
--- a/app/Config/Logger.php
+++ b/app/Config/Logger.php
@@ -38,7 +38,7 @@ class Logger extends BaseConfig
      *
      * @var int|list<int>
      */
-    public $threshold = (ENVIRONMENT === 'production') ? 4 : 9;
+    public $threshold = 4;
 
     /**
      * --------------------------------------------------------------------------
diff --git a/app/Config/Routes.php b/app/Config/Routes.php
index b61b6a8..27402f5 100644
--- a/app/Config/Routes.php
+++ b/app/Config/Routes.php
@@ -98,4 +98,6 @@ use CodeIgniter\Router\RouteCollection;
  $routes->post('status_branch','BranchController::status_branch');
 
  
- 
\ No newline at end of file
+ $routes->get('sendSms','TestController::sendSms');
+ $routes->get('protected-page', 'TestController::protectedPage', ['filter' => 'signedUrl']);
+ $routes->get('sendUrl', 'TestController::sendUrl');
\ No newline at end of file
diff --git a/app/Controllers/TestController.php b/app/Controllers/TestController.php
new file mode 100644
index 0000000..b2ee8e6
--- /dev/null
+++ b/app/Controllers/TestController.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Controllers;
+
+use CodeIgniter\Controller;
+
+class TestController extends Controller
+{
+    public function sendSms()
+    {
+        $apiKey = 'HgvlULWCIrs'; // Your API key
+        $mobileNumbers = '9894638731'; // Recipient mobile numbers
+        $DLTTemplateID = '1107171922342349877';  // DLT Template ID
+        $senderId = 'LDRAJ'; // Sender ID
+        $message = 'Dear Gowtham, 986532 is OTP to approve Service group for service name purposes.';
+        $serviceName = 'TEMPLATE_BASED'; // Service name
+
+        // URL encode the message
+        $encodedMessage = urlencode($message);
+
+        // Initialize cURL
+        $ch = curl_init();
+
+        // Set cURL options
+        curl_setopt($ch, CURLOPT_URL, "https://smsapi.24x7sms.com/api_2.0/SendSMS.aspx?APIKEY=$apiKey&MobileNo=$mobileNumbers&SenderID=$senderId&Message=$encodedMessage&ServiceName=$serviceName&DLTTemplateID=$DLTTemplateID");
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
+
+        // Execute cURL request and get the response
+        $output = curl_exec($ch);
+
+        // Close cURL session
+        curl_close($ch);
+
+        // Output the response (for testing purposes)
+        return $this->response->setJSON(['response' => $output]);
+    }
+
+    public function sendUrl()
+    {
+        helper('url');
+        $signedUrl = generate_signed_url('protected-page', [], 36000); 
+        // Send the $signedUrl to your client (e.g., via email)
+        
+        return $this->response->setJSON(['url' => $signedUrl]);
+    }
+    public function protectedPage(){
+       echo "This is protectedPage";
+    }
+}
diff --git a/app/Filters/SignedUrlFilter.php b/app/Filters/SignedUrlFilter.php
new file mode 100644
index 0000000..00492c6
--- /dev/null
+++ b/app/Filters/SignedUrlFilter.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Filters;
+
+use CodeIgniter\HTTP\RequestInterface;
+use CodeIgniter\HTTP\ResponseInterface;
+use CodeIgniter\Filters\FilterInterface;
+use Config\Services;
+class SignedUrlFilter implements FilterInterface
+{
+    public function before(RequestInterface $request, $arguments = null)
+    {
+        $secretKey = 'your-secret-key'; // Change this to your secret key
+        $expires = $request->getGet('expires');
+        $signature = $request->getGet('signature');
+        
+        if (!$expires || !$signature) {
+            return Services::response()->setStatusCode(403)->setBody('Forbidden');
+        }
+        
+        if (time() > $expires) {
+            $body = view('expired_link');
+            return Services::response()->setStatusCode(403)->setBody($body);
+        }
+        
+        $queryParams = $request->getGet();
+        unset($queryParams['signature']);
+        $route = $request->getPath();
+        $expectedSignature = hash_hmac('sha256', $route . '?' . http_build_query($queryParams), $secretKey);
+        
+        if (!hash_equals($expectedSignature, $signature)) {
+            return Services::response()->setStatusCode(403)->setBody('Invalid signature');
+        }
+        
+        return true; // Allow the request
+    }
+
+    public function after(RequestInterface $request, ResponseInterface $response, $arguments = null)
+    {
+        // Do nothing here
+    }
+}
+
+
diff --git a/app/Helpers/url_helper.php b/app/Helpers/url_helper.php
new file mode 100644
index 0000000..064e82b
--- /dev/null
+++ b/app/Helpers/url_helper.php
@@ -0,0 +1,15 @@
+<?php
+
+use Config\Services;
+
+if (!function_exists('generate_signed_url')) {
+    function generate_signed_url($route, $params = [], $expiresIn = 3600)
+    {
+        $secretKey = 'your-secret-key'; // Change this to your secret key
+        $expiresAt = time() + $expiresIn;
+        $params['expires'] = $expiresAt;
+        $signature = hash_hmac('sha256', $route . '?' . http_build_query($params), $secretKey);
+        $params['signature'] = $signature;
+        return base_url($route . '?' . http_build_query($params));
+    }
+}
diff --git a/app/Views/expired_link.php b/app/Views/expired_link.php
new file mode 100644
index 0000000..24cd062
--- /dev/null
+++ b/app/Views/expired_link.php
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Link Expired</title>
+    <style>
+        body {
+            display: flex;
+            justify-content: center;
+            align-items: center;
+            height: 100vh;
+            margin: 0;
+            font-family: Arial, sans-serif;
+        }
+        .container {
+            text-align: center;
+        }
+        img {
+            max-width: 100%;
+            height: auto;
+        }
+        .text{
+            font-size: large;
+            font-weight: bold;
+        }
+    </style>
+</head>
+<body>
+    <div class="container">
+        <img src="<?= base_url('public/assets/images/404.gif') ?>" alt="Link Expired">
+        <p class="text">Link expired</p>
+    </div>
+</body>
+</html>
diff --git a/public/assets/images/404.gif b/public/assets/images/404.gif
new file mode 100644
index 0000000..f23f59d
Binary files /dev/null and b/public/assets/images/404.gif differ