A METHOD OF LIMITING THE AMOUNT OF NETWORK TRAFFIC REACHING A LOCAL NODE OPERATING ACCORDING TO AN INDUSTRIAL ETHERNET PROTOCOL

摘要

A method of limiting the amount of network traffic reaching a local node in an electronic device operating an Ethernet networking protocol and using a network stack comprising at least one physical layer (31) (PHY) and at least one link layer (32), preferably a media access controller (2) (MAC). The electronic device is connected to a communication network, the network traffic is filtered, and an unwanted data reception is filtered out. Filtering the network traffic takes place during reception. Network traffic is inspected, and if an unwanted reception is detected, the unwanted data is discarded when it reaches media access controller (MAC) (2) of the network stack of said electronic device. An electronic device, functioning as a node, embodying aspects of the invention is described, and a computer program for carrying out the invention is also described.