A home network using multicast message control apparatus and method for remote user interface server

A method for remote user interface client (the RUIC) apparatus and method for controlling a remote user interface server (RUIS), wherein said method comprises: a reproducing controlling RUIS RUI page; receiving from the user through the RUI page RUIS control command for controlling an input; generating for transmitting the control command inputted in the form of a multicast multicast control message; and the multicast control message to the RUIS.