Identifying intrusions into a network data processing system

摘要

A method, apparatus and computer instructions for handling intrusions. A tracer packet is sent back to an intruder causing the intrusion in response to receiving notification of an intrusion from a particular node in a network data processing system. Nodes in the network data processing system are notified of the tracer packet. Identification of the node is stored for use in tracing a route of the tracer packet through the data processing system in response to receiving a message from a node indicating receipt of the tracer packet.