Patent ID: 8090846

Claim:
A method of making an audiovisual communications network secure, in which network a first endpoint exchanges with a control element messages transmitting parameters registered or to be registered with the control element to enable the first endpoint to communicate with a second endpoint registered with the control element, which method comprises: detecting whether a set of parameters among the parameters transmitted in a message is inconsistent with endpoint parameters stored by the addressee of said message, wherein said set of parameters comprises at least two parameters, one of said parameters being a source address type parameter, and detecting an attack when the set of parameters is inconsistent, wherein, the control element is the addressee of the message, and: the set of transmitted parameters is consistent if each parameter of the set does not correspond to any endpoint parameter of identical type and value registered with the control element; or the set of transmitted parameters is consistent if there exists a set including the same number of parameters of respectively identical types and values for a single endpoint already registered with the control element.