METHOD AND DEVICES FOR PROTECTION OF CONTROL PLANE FUNCTIONALITY

摘要

The invention relates to a method (40) for protection of control plane functionality of a network node of a communications network providing wireless communication to a mobile terminal. The network node is configured to support control plane signaling with the mobile terminal. The method (40) comprises: maintaining (41) a communication context for the mobile terminal, the communication context being associated with a control signaling message exchange between the mobile terminal and the network node; establishing (42), for a received message, a communication context to which it belongs; determining (43), in relation to information in the established communication context, the received message to be a message conforming to a protection rule or a message violating a protection rule; and handling (44) the message in accordance with rules of a protection policy. The invention also relates to corresponding nodes, computer programs and computer program products.