Identification of a private device in a public network

摘要

Methods, network address translation (NAT) devices, network nodes and system for allowing identification of a private device in a public network or treating traffic of a private device in a public network. The NAT may allocate a private IPv4 address to the private device, reserve a block of ports on the public IPv4 address for the private device and send an identification of the block of ports to a network node in the public network. The network node of the public network may receive an identification of a block of ports on the public IPv4 address indicating that the block of ports is reserved for the private device and activate a rule for treating traffic of the private device.

主权项

1. A method for treating traffic of a private device in a public network, wherein the private device is located behind a network address translation device having a public IPv4 address, the method comprising the steps of:
in a network node of the public network, receiving an identification of a block of ports on the public IPv4 address indicating that the block of ports is reserved for the private device, wherein the block contains two or more ports; in the network node of the public network, receiving traffic addressed from the public IPv4 address on at least one port from the block of ports reserved for the private device; in the network node of the public network, identifying the received traffic as traffic of the private device; upon identifying that the received traffic is from the private device, in the network node of the public network, activating a rule related to the private device for applying a traffic treatment service to the traffic coming from the private device.