diff --git a/Admin/Installer.php b/Admin/Installer.php
index 74e9654..d34e9c5 100644
--- a/Admin/Installer.php
+++ b/Admin/Installer.php
@@ -52,7 +52,8 @@ class Installer extends InstallerAbstract
                             `nav_from` varchar(255) DEFAULT NULL,
                             `nav_order` smallint(3) DEFAULT NULL,
                             `nav_parent` int(11) DEFAULT NULL,
-                            `nav_permission` int(11) DEFAULT NULL,
+                            `nav_permission_type` int(11) DEFAULT NULL,
+                            `nav_permission_element` int(11) DEFAULT NULL,
                             PRIMARY KEY (`nav_id`)
                         )ENGINE=InnoDB  DEFAULT CHARSET=utf8;'
                 )->execute();
@@ -63,8 +64,8 @@ class Installer extends InstallerAbstract
     /**
      * Install data from providing modules.
      *
-     * @param DatabasePool  $dbPool Database pool
-     * @param array $data   Module info
+     * @param DatabasePool $dbPool Database pool
+     * @param array        $data   Module info
      *
      * @return void
      *
@@ -86,9 +87,8 @@ class Installer extends InstallerAbstract
     /**
      * Install navigation element.
      *
-     * @param DatabasePool  $dbPool Database instance
-     * @param array $data   Link info
-     * @param int  $parent Parent element (default is 0 for none)
+     * @param DatabasePool $dbPool Database instance
+     * @param array        $data   Link info
      *
      * @return void
      *
@@ -97,8 +97,8 @@ class Installer extends InstallerAbstract
     private static function installLink($dbPool, $data)
     {
         $sth = $dbPool->get()->con->prepare(
-            'INSERT INTO `' . $dbPool->get()->prefix . 'nav` (`nav_id`, `nav_pid`, `nav_name`, `nav_type`, `nav_subtype`, `nav_icon`, `nav_uri`, `nav_target`, `nav_from`, `nav_order`, `nav_parent`, `nav_permission`) VALUES
-                        (:id, :pid, :name, :type, :subtype, :icon, :uri, :target, :from, :order, :parent, :perm);'
+            'INSERT INTO `' . $dbPool->get()->prefix . 'nav` (`nav_id`, `nav_pid`, `nav_name`, `nav_type`, `nav_subtype`, `nav_icon`, `nav_uri`, `nav_target`, `nav_from`, `nav_order`, `nav_parent`, `nav_permission_type`, `nav_permission_element`) VALUES
+                        (:id, :pid, :name, :type, :subtype, :icon, :uri, :target, :from, :order, :parent, :perm_type, :perm_element);'
         );
 
         $sth->bindValue(':id', $data['id'] ?? 0, \PDO::PARAM_INT);
@@ -109,10 +109,11 @@ class Installer extends InstallerAbstract
         $sth->bindValue(':icon', $data['icon'] ?? null, \PDO::PARAM_STR);
         $sth->bindValue(':uri', $data['uri'] ?? null, \PDO::PARAM_STR);
         $sth->bindValue(':target', $data['target'] ?? "self", \PDO::PARAM_STR);
-        $sth->bindValue(':from', $data['from'] ?? 0, \PDO::PARAM_INT);
+        $sth->bindValue(':from', $data['from'] ?? 0, \PDO::PARAM_STR);
         $sth->bindValue(':order', $data['order'] ?? 1, \PDO::PARAM_INT);
         $sth->bindValue(':parent', $data['parent'], \PDO::PARAM_INT);
-        $sth->bindValue(':perm', $data['permission'] ?? 0, \PDO::PARAM_INT);
+        $sth->bindValue(':perm_type', $data['permission']['type'] ?? null, \PDO::PARAM_INT);
+        $sth->bindValue(':perm_element', $data['permission']['element'] ?? null, \PDO::PARAM_INT);
 
         $sth->execute();
 
diff --git a/Controller.php b/Controller.php
index 3587d13..0f7c0f0 100644
--- a/Controller.php
+++ b/Controller.php
@@ -97,7 +97,7 @@ class Controller extends ModuleAbstract implements WebInterface
      */
     public function createNavigationMid(int $pageId, RequestAbstract $request, ResponseAbstract $response)
     {
-        $nav     = Navigation::getInstance($request, $this->app->dbPool);
+        $nav     = Navigation::getInstance($request, $this->app->accountManager->get($request->getHeader()->getAccount()), $this->app->dbPool);
         $navView = new NavigationView($this->app, $request, $response);
         $navView->setTemplate('/Modules/Navigation/Theme/Backend/mid');
         $navView->setNav($nav->getNav());
@@ -119,7 +119,7 @@ class Controller extends ModuleAbstract implements WebInterface
      */
     public function getView(RequestAbstract $request, ResponseAbstract $response) : NavigationView
     {
-        $navObj = \Modules\Navigation\Models\Navigation::getInstance($request, $this->app->dbPool);
+        $navObj = \Modules\Navigation\Models\Navigation::getInstance($request, $this->app->accountManager->get($request->getHeader()->getAccount()), $this->app->dbPool);
         $nav    = new \Modules\Navigation\Views\NavigationView($this->app, $request, $response);
         $nav->setNav($navObj->getNav());
         $nav->setLanguage($request->getHeader()->getL11n()->getLanguage());
@@ -173,8 +173,9 @@ class Controller extends ModuleAbstract implements WebInterface
      */
     public function createNavigationSplash(int $pageId, RequestAbstract $request, ResponseAbstract $response)
     {
-        $nav     = Navigation::getInstance($request, $this->app->dbPool);
+        $nav     = Navigation::getInstance($request, $this->app->accountManager->get($request->getHeader()->getAccount()), $this->app->dbPool);
         $navView = new NavigationView($this->app, $request, $response);
+        
         $navView->setTemplate('/Modules/Navigation/Theme/Backend/splash');
         $navView->setNav($nav->getNav());
         $navView->setLanguage($request->getHeader()->getL11n()->getLanguage());
diff --git a/Models/Navigation.php b/Models/Navigation.php
index 2e9125d..d934756 100644
--- a/Models/Navigation.php
+++ b/Models/Navigation.php
@@ -16,6 +16,8 @@ namespace Modules\Navigation\Models;
 
 use phpOMS\DataStorage\Database\DatabasePool;
 use phpOMS\Message\RequestAbstract;
+use phpOMS\Account\Account;
+use phpOMS\Account\PermissionType;
 
 /**
  * Navigation class.
@@ -58,33 +60,35 @@ class Navigation
      * Constructor.
      *
      * @param RequestAbstract $request Request hashes
-     * @param DatabasePool            $dbPool  Database pool
+     * @param Account         $account Account
+     * @param DatabasePool    $dbPool  Database pool
      *
      * @since  1.0.0
      */
-    private function __construct(RequestAbstract $request, DatabasePool $dbPool = null)
+    private function __construct(RequestAbstract $request, Account $account, DatabasePool $dbPool = null)
     {
         $this->dbPool = $dbPool;
-        $this->load($request->getHash());
+        $this->load($request->getHash(), $account);
     }
 
     /**
      * Load navigation based on request.
      *
-     * @param string[] $request Request hashes
+     * @param string[] $hashes  Request hashes
+     * @param Account  $account Account
      *
      * @return void
      *
      * @since  1.0.0
      */
-    private function load($request)
+    private function load(array $hashes, Account $account)
     {
         if (empty($this->nav)) {
             $this->nav = [];
             $uriPdo    = '';
 
             $i = 1;
-            foreach ($request as $hash) {
+            foreach ($hashes as $hash) {
                 $uriPdo .= ':pid' . $i . ',';
                 $i++;
             }
@@ -93,25 +97,58 @@ class Navigation
             $sth    = $this->dbPool->get('select')->con->prepare('SELECT * FROM `' . $this->dbPool->get('select')->prefix . 'nav` WHERE `nav_pid` IN(' . $uriPdo . ') ORDER BY `nav_order` ASC');
 
             $i = 1;
-            foreach ($request as $hash) {
+            foreach ($hashes as $hash) {
                 $sth->bindValue(':pid' . $i, $hash, \PDO::PARAM_STR);
                 $i++;
             }
 
             $sth->execute();
-            $tempNav = $sth->fetchAll();
+            $tempNav = $sth->fetchAll(\PDO::FETCH_GROUP);
 
-            foreach ($tempNav as $link) {
-                $this->nav[$link['nav_type']][$link['nav_subtype']][$link['nav_id']] = $link;
+            foreach ($tempNav as $id => $link) {
+                $isReadable = $account->hasPermission(
+                    PermissionType::READ, 
+                    null, 
+                    null, 
+                    $link[0]['from'], $link[0]['permission']['type'], 
+                    $link[0]['permission']['type']['element']
+                );
+
+                if ($isReadable) {
+                    $tempNav[$id][0]['readable'] = true;
+                    
+                    $this->setReadable($tempNav, $tempNav[$id][0]['paremt']);
+                }
             }
+
+            foreach ($tempNav as $id => $link) {
+                if (isset($link[0]['readable']) && $link[0]['readable']) {
+                    $this->nav[$link[0]['nav_type']][$link[0]['nav_subtype']][$id] = $link[0];
+                }
+            }
+        }
+    }
+
+    private function setReadable(array &$nav, $parent) 
+    {
+        if (isset($nav[$parent])) {
+            $nav[$parent][0]['readable'] = true;
+        }
+
+        if (isset($nav[$nav[$parent][0]['parent']])
+            && (!isset($nav[$nav[$parent][0]['parent']][0]['readable']) 
+                || !$nav[$nav[$parent][0]['parent']][0]['readable'])
+        ) {
+            $this->setReadable($nav, $nav[$parent][0]['parent']);
         }
     }
 
     /**
      * Get instance.
      *
-     * @param RequestAbstract $request Request hashes
-     * @param DatabasePool            $dbPool  Database pool
+     * @param RequestAbstract $hashes  Request hashes
+     * @param Account         $account Account
+     * @param DatabasePool    $dbPool  Database pool
      *
      * @return \Modules\Navigation\Models\Navigation
      *
@@ -119,14 +156,14 @@ class Navigation
      *
      * @since  1.0.0
      */
-    public static function getInstance(RequestAbstract $request = null, DatabasePool $dbPool = null)
+    public static function getInstance(RequestAbstract $hashes = null, Account $account, DatabasePool $dbPool = null)
     {
         if (!isset(self::$instance)) {
-            if (!isset($request) || !isset($dbPool)) {
+            if (!isset($hashes) || !isset($dbPool)) {
                 throw new \Exception('Invalid parameters');
             }
 
-            self::$instance = new self($request, $dbPool);
+            self::$instance = new self($hashes, $account, $dbPool);
         }
 
         return self::$instance;
@@ -141,7 +178,14 @@ class Navigation
     {
     }
 
-    public function getNav()
+    /**
+     * Get navigation based on account permissions
+     * 
+     * @return array
+     *
+     * @since  1.0.0
+     */
+    public function getNav() : array
     {
         return $this->nav;
     }
diff --git a/Theme/Backend/side.tpl.php b/Theme/Backend/side.tpl.php
index 3c7bcad..d8388e3 100644
--- a/Theme/Backend/side.tpl.php
+++ b/Theme/Backend/side.tpl.php
@@ -25,7 +25,7 @@ if (isset($this->nav[\Modules\Navigation\Models\NavigationType::SIDE])) : ?>
                     <?= $this->getHtml($parent['nav_name']) ?><label for="nav-<?= $this->printHtml($parent['nav_name']); ?>"><i class="fa fa-chevron-down min"></i>
                     <i class="fa fa-chevron-up max"></i></label>
                     <?php foreach ($this->nav[\Modules\Navigation\Models\NavigationType::SIDE][\Modules\Navigation\Models\LinkType::LINK] as $key2 => $link) :
-                    if ($link['nav_parent'] === $parent['nav_id']) : ?>
+                    if ($link['nav_parent'] === $key) : ?>
                 <li>
                     <a href="<?= \phpOMS\Uri\UriFactory::build($link['nav_uri']); ?>"><?= $this->getHtml($link['nav_name']) ?></a>
                     <?php endif;
@@ -34,14 +34,4 @@ if (isset($this->nav[\Modules\Navigation\Models\NavigationType::SIDE])) : ?>
             <?php endforeach; ?>
     </ul>
 <?php
-/**
- * Orange Management
- *
- * PHP Version 7.1
- *
- * @package    TBD
- * @copyright  Dennis Eichhorn
- * @license    OMS License 1.0
- * @version    1.0.0
- * @link       http://website.orange-management.de
- */ endif;
+endif;