Method and device for transmitting data between two secured Ethernet networks via a routed network

摘要

This method for transmitting data between a starting network and a receiving network through a transit network comprises, during a transmission of data comprised in at least one frame of a data link layer: encapsulation of the frame in at least one packet of a network layer compatible with the transit network, and transmission of each packet to the receiving network. Each packet is a secured packet, and the encapsulation step comprises the following steps: generating at least one security encapsulation header, forming at least one encapsulation packet comprising at least one of the security encapsulation header(s) and the frame or a fragment of the frame, forming each secured packet by applying at least one cryptographic protection to each encapsulation packet.