Network security gateway onboard an aircraft to connect low and high trust domains of an avionics computing infrastructure

Abstract

The gateway, which connects a low-trust domain () and a high-trust domain () of an avionics computing infrastructure, provides a plurality of security functions, each function being performed by a data processing node. The gateway comprises, connected in series along a filtering chain of a data flow received from the low-trust domain: a firewall data processing node (); a protocol break data processing node (); a master data processing node () and an inverse protocol break data processing node (), the gateway further including a security data processing node () connected to each of the data processing nodes of the filtering chain, the different data processing nodes being physically segregated.