Patent ID: 8817786

Claim:
A method of filtering packets sent to a communication network from a home network, the method comprising, after successful registration of a terminal with a service platform: a step of associating a registration context with the terminal, the context comprising registration information transmitted between the terminal and the service platform during registration; a step of creating at least one filtering rule on the basis of the registration context, said rule aiming to block packets sent from the home network to the communications network that do not conform to at least a portion of the registration information; and a step of filtering the packets as a function of the rule created, wherein the service platform manages the mobility of at least one terminal belonging to the home network to visited networks and the registration context includes an address of the terminal in the home network, said step of creating a filtering rule being adapted to create at least one rule to block all outgoing packets not sent from one of the address of the terminal in the home network and the address of a home agent, while passing all outgoing packets sent from the address of the terminal in the home network and all outgoing packets sent from the address of the home agent.