HI,MASTER How to limit illegal unusual request for data

Such as：

      var shareObjectResponder:Responder=new Responder(getSharedObject);

      nc.call("getSharedObject",shareObjectResponder,rd);

The RD is just a number, but it was a malicious transfer up to 10GB of data, or very large data, I would like to FMS can reject the call, ask how to achieve it, the best can be global control.