Monitoring device for the forced centralization of selected traffic in a node of an IP network

摘要

A device (D) is dedicated to monitoring traffic in a home node (R1) constituting in an internet Protocol (IP) communication network a home agent for at least one mobile first communication terminal (TM) having a first IP address and temporarily attached to a foreign subnetwork (S3). This device (D) comprises monitoring means (MC) adapted, in the case of reception by the home node (R1) of a first message associated with a first (source) IP address of the mobile first terminal (TM) and a second (destination) IP address of a second terminal (TC) and requesting the setting up of decentralized traffic between the first terminal (TM) and the second terminal (TC), to verify if the first IP address corresponds to an IP address from a list of chosen IP addresses and, in the case where there is a correspondence, i) to prohibit the home node (R1) from transmitting the first received message to the second (destination) IP address, ii) to generate a response message indicating that the second terminal (TC) cannot satisfy the first message and associated with a destination IP address equal to the first IP address, and iii) to order the home node (R1) to transmit the response message to the first IP address.