Patent ID: 7747849

Claim:
A security-procuring method for making a gateway secure, said gateway including, an operating system core, said operating system core including at least one IPv6 protocol stack, said protocol stacks including a set of interfaces organized to enable external modules connected to the set of interfaces to access data packets transmitted by said at least one protocol stack at determined points associated with said interfaces, wherein said method comprises: connecting an input module to an input interface of said operating system core; connecting an output module to an output interface of said operating system core; selecting and analyzing the data packets of a Network Discovery Protocol by at least one of the input module and the output module; modifying the data packets of the Network Discovery Protocol by at least one of the input module and the output module in compliance with a Secure Neighbor Discovery Protocol mechanism, in a manner that is transparent for said operating system core, said external modules analyzing and modifying a “CGA” option and a “RSA signature” option of said data packets of the Network Discovery Protocol; and situating the determined points at an input port and an output port of said protocol stacks.