@@ -1556,6 +1556,15 @@ do_open_tun (struct context *c)

 		     NULL,

 		     "up",

 		     c->c2.es);

+#if defined(WIN32)

+      if (c->options.block_outside_dns)

+        {

+          dmsg (D_LOW, "Blocking outside DNS");

+          if (!win_wfp_block_dns(c->c1.tuntap->adapter_index, c->options.msg_channel))

+            msg (M_FATAL, "Blocking DNS failed!");

+        }

+#endif

+

     }

 #endif

   gc_free (&gc);

@@ -1686,6 +1695,15 @@ do_close_tun (struct context *c, bool force)

 					     c->sig->signal_text),

 			 "down",

 			 c->c2.es);

+

+#if defined(WIN32)

+          if (c->options.block_outside_dns)

+            {

+              if (!win_wfp_uninit(c->options.msg_channel))

+                  msg (M_FATAL, "Uninitialising WFP failed!");

+            }

+#endif

+

 	}

     }

   gc_free (&gc);