SECURITY SYSTEM AND COMMUNICATION CONTROL METHOD

摘要

A security system comprising: a first gateway device; a second gateway device; and a duplex communication line, wherein a first proxy part of the first gateway device is configured, if an inbound data is of a specific protocol, to receive a communication information of the specific protocol transmitted by the inbound data and to send the communication information of the specific protocol to the second gateway device, and, if the inbound data is not of the specific protocol, not to send the inbound data to the second gateway device, and wherein the second proxy part is configured, when the second gateway device receives the communication information of the specific protocol from the first proxy part, to acquire a destination address for communication in an internal network from the communication information of the specific protocol and to send the communication information of the specific protocol to the destination address.

主权项

1. A security system comprising:
a first gateway device configured to be connected to an external network; a second gateway device configured to be connected to an internal network and to the first gateway device; and a duplex communication line for connecting the first gateway device and the second gateway device so as to enable two-way communication between the first gateway device and the second gateway device, wherein the first gateway device has a first proxy part configured to process a specific protocol of an application layer, wherein the second gateway device has a second proxy part configured to process the specific protocol, wherein the first proxy part is configured, when the first gateway device receives an inbound data from the external network to the internal network, to receive a communication information of the specific protocol conveyed by the inbound data and to send the communication information of the specific protocol to the second gateway device through the duplex communication line if the inbound data is of the specific protocol, and not to send the inbound data to the second gateway device if the inbound data is not of the specific protocol, and wherein the second proxy part is configured, when the second gateway device receives the communication information of the specific protocol from the first proxy part through the duplex communication line, to acquire a destination address for communication in the internal network from the communication information of the specific protocol and to send the communication information of the specific protocol to the destination address.