diff --git a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiMutableModelControllerBase.php b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiMutableModelControllerBase.php
index c3ee62cad..a6158dad6 100644
--- a/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiMutableModelControllerBase.php
+++ b/src/opnsense/mvc/app/controllers/OPNsense/Base/ApiMutableModelControllerBase.php
@@ -234,10 +234,11 @@ abstract class ApiMutableModelControllerBase extends ApiControllerBase
      * @param string $path path to search, relative to this model
      * @param array $fields fieldnames to fetch in result
      * @param string|null $defaultSort default sort field name
+     * @param null|function $filter_funct additional filter callable
      * @return array
      * @throws \ReflectionException when binding to the model class fails
      */
-    public function searchBase($path, $fields, $defaultSort = null)
+    public function searchBase($path, $fields, $defaultSort = null, $filter_funct = null)
     {
         $this->sessionClose();
         $element = $this->getModel();
@@ -248,7 +249,8 @@ abstract class ApiMutableModelControllerBase extends ApiControllerBase
         return $grid->fetchBindRequest(
             $this->request,
             $fields,
-            $defaultSort
+            $defaultSort,
+            $filter_funct
         );
     }
 
diff --git a/src/opnsense/mvc/app/library/OPNsense/Base/UIModelGrid.php b/src/opnsense/mvc/app/library/OPNsense/Base/UIModelGrid.php
index a5bb96ad9..c25937181 100644
--- a/src/opnsense/mvc/app/library/OPNsense/Base/UIModelGrid.php
+++ b/src/opnsense/mvc/app/library/OPNsense/Base/UIModelGrid.php
@@ -53,9 +53,10 @@ class UIModelGrid
      * @param $request request variable
      * @param array $fields to collect
      * @param null|string $defaultSort default sort order
+     * @param null|function $filter_funct additional filter callable
      * @return array
      */
-    public function fetchBindRequest($request, $fields, $defaultSort = null)
+    public function fetchBindRequest($request, $fields, $defaultSort = null, $filter_funct = null)
     {
         $itemsPerPage = $request->get('rowCount', 'int', -1);
         $currentPage = $request->get('current', 'int', 1);
@@ -70,7 +71,9 @@ class UIModelGrid
         }
 
         $searchPhrase = $request->get('searchPhrase', 'string', '');
-        return $this->fetch($fields, $itemsPerPage, $currentPage, $sortBy, $sortDescending, $searchPhrase);
+        return $this->fetch(
+            $fields, $itemsPerPage, $currentPage, $sortBy, $sortDescending, $searchPhrase, $filter_funct
+        );
     }
 
     /**
@@ -81,6 +84,7 @@ class UIModelGrid
      * @param array $sortBy sort by fieldnames
      * @param bool $sortDescending sort in descending order
      * @param string $searchPhrase search phrase to use
+     * @param null|function $filter_funct additional filter callable
      * @return array
      */
     public function fetch(
@@ -89,13 +93,19 @@ class UIModelGrid
         $currentPage,
         $sortBy = array(),
         $sortDescending = false,
-        $searchPhrase = ''
+        $searchPhrase = '',
+        $filter_funct = null
     ) {
         $result = array('rows'=>array());
 
         $recordIndex = 0;
         foreach ($this->DataField->sortedBy($sortBy, $sortDescending) as $record) {
             if (array_key_exists("uuid", $record->getAttributes())) {
+                if (is_callable($filter_funct) && !$filter_funct($record)) {
+                    // not applicable according to $filter_funct()
+                    continue;
+                }
+
                 // parse rows, because we may need to convert some (list) items we need to know the actual content
                 // before searching.
                 $row =  array();