Patent ID: 7249370
Filing Date: 2007-07-24
Classification: H04L,H04N,H04W

Abstract:
1. A communication system comprising: an information providing unit configured to provide information data; an information providing-side network configured to provide connectivity to the information providing unit, to restrict access to the information providing-side network, and to operate under a first security policy restricting access to the information providing-side network based on an authentication determination made from within the information providing-side network; an information transmitter configured to obtain the information data by transmitting request data for requesting the information data to the information providing unit, and transmit obtained information data to a terminal; an information transmitting-side network configured to provide connectivity to the information transmitter, to restrict access to the information transmitting-side network, and to operate under a second security policy restricting access to the information transmitting-side network based on an authentication determination made from within the information transmitting-side network; and a transfer unit comprising an interface for each of the information transmitting-side network and the information providing-side network, the transfer unit configured to connect to each of the networks, determine whether or not transmitting-side data received via the information transmitting-side network is data transmitted from the information transmitter, and whether or not providing-side data received via the information providing-side network is data transmitted from the information providing unit, and transfer the transmitting-side data and the providing-side data based on determination results.