A system and method of networking with configurable data mapping is disclosed. Data mapping can be utilized to match data transmission types with devices that can efficiently utilize the data transmission type. In one configuration, the data mapping teachings disclosed herein may be utilized to increase the processing efficiency of a home network and insure correct programming is allowed to pass to the correct device by applying a set of data transmission rules to data transmissions between a residential gateway and it's clients. An exemplary method may include receiving a communication at a residential gateway from a client and identifying the client or the source of the transmission. The client may be identified by recognizing one or more of a data transmission type, a client identifier embedded in the transmission, and an identification of a network device hosting the client. The identification may, in some cases, be made automatically upon reception of a data transmission. The transmission type is then compared to the contents of a look-up table and the transmission can be modified according to a predetermined configuration. In one embodiment a bandwidth allocation of a client request is utilized to either allow the data stream or block the data stream from being passed to a particular network client.