Architecture of an open local area network for audio service...

H - Electricity – 04 – L

Patent

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H04L 29/06 (2006.01)

Patent

CA 2682777

The invention relates to a system for data exchange between at least two communication networks using the IP Internet protocol, a first network having a security level N1 higher than the security network N2 of a second network, and several terminals being connected to the first and second networks, characterised in that it comprises at least the following members: means for marking the flows based on their security level, a gateway between the first network (1) and the network (2) for carrying out a protocol interruption, and means for filtering the data flows suitable for checking the marking and to give authorisation for the broadcasting of the flow based on the relevancy between the marker and the sensitivity level of the communication, and visual means on the terminal for indicating to the user whether or not he communicates on a secured media.

Système permettant des échanges de données, entre au moins deux réseaux de communication, utilisant le protocole Internet IP, un premier réseau ayant un niveau de sécurité N1 supérieur au niveau de sécurité N2 d'un deuxième réseau, plusieurs terminaux étant reliés au premier réseau et au deuxième réseau caractérisé en ce qu'il comporte au moins les éléments suivants : des moyens permettant de marquer les flux en fonction de leur niveau de sécurité, une passerelle entre le premier réseau 1 et le réseau 2 adaptée à réaliser une rupture de protocole, et des moyens de filtrage des flux de données adaptés à vérifier le marquage et à donner l'autorisation de diffusion du flux en fonction de la cohérence du marqueur avec le niveau de sensibilité de la communication, des moyens visuels sur le terminal permettant d'avertir l'usager s'il dialogue sur un média sécurisé ou non.

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