diff --git a/common/rfb/SSecurityStack.cxx b/common/rfb/SSecurityStack.cxx
index 9ddc9f2..478ce4f 100644
--- a/common/rfb/SSecurityStack.cxx
+++ b/common/rfb/SSecurityStack.cxx
@@ -65,3 +65,20 @@
 
   return c;
 }
+
+SConnection::AccessRights SSecurityStack::getAccessRights() const
+{
+  SConnection::AccessRights accessRights;
+
+  if (!state0 && !state1)
+    return SSecurity::getAccessRights();
+
+  accessRights = SConnection::AccessFull;
+
+  if (state0)
+    accessRights &= state0->getAccessRights();
+  if (state1)
+    accessRights &= state1->getAccessRights();
+
+  return accessRights;
+}