The Restricted property determines if the server should be 
          initialized in a restricted mode that isolates the server and limits 
          the ability for clients to access files on the host system. If this 
          property is set to True, all file transfers are limited to the 
          user's home directory and certain site-specific commands are disabled. 
          This is recommended for general purpose applications designed to 
          accept connections from clients over the Internet. This property value 
          is only meaningful if the MultiUser property has also been set 
          to True.
          Attempting to change the value of this property after the server 
          has started will cause an exception to be raised. To change this 
          property value, you must first call the Stop
          method which will terminate all active client connections.
          The default value for this property is False.