diff --git a/lib/tfw/networking/server/zmq_websocket_proxy.py b/lib/tfw/networking/server/zmq_websocket_proxy.py
index f456d94..cb43a30 100644
--- a/lib/tfw/networking/server/zmq_websocket_proxy.py
+++ b/lib/tfw/networking/server/zmq_websocket_proxy.py
@@ -105,14 +105,9 @@ class TFWProxy:
             raise ValueError('Invalid TFW message format!')
 
     def __call__(self, message):
-        try:
-            self.proxy_filters._execute_callbacks(message)
-        except ValueError:
-            LOG.exception('Invalid TFW message received!')
+        if not self.filter_and_execute_callbacks(message):
             return
 
-        self.proxy_callbacks._execute_callbacks(message)
-
         if message['key'] not in self.keyhandlers:
             self.to_destination(message)
         else:
@@ -122,13 +117,26 @@ class TFWProxy:
             except KeyError:
                 LOG.error('Invalid "%s" message format! Ignoring.', handler.__name__)
 
+    def filter_and_execute_callbacks(self, message):
+        try:
+            self.proxy_filters._execute_callbacks(message)
+            self.proxy_callbacks._execute_callbacks(message)
+            return True
+        except ValueError:
+            LOG.exception('Invalid TFW message received!')
+            return False
+
     def mirror(self, message):
         message = message['data']
+        if not self.filter_and_execute_callbacks(message):
+            return
         LOG.debug('Mirroring message: %s', message)
         self.to_source(message)
 
     def broadcast(self, message):
         message = message['data']
+        if not self.filter_and_execute_callbacks(message):
+            return
         LOG.debug('Broadcasting message: %s', message)
         self.to_source(message)
         self.to_destination(message)