5G NB-IoT: Efficient Network Traffic Filtering for Multitenant IoT Cellular Networks

Table 2

Encapsulation groups, purpose, and interested fields to be matched.

GROUP	PURPOSE	PROTOCOLS	FIELDS TO BE MATCHED
GROUP 1	PHYSICAL COMMUNICATION	IP	SOURCE IP ADDRESS
			DESTINATION IP ADDRESS
			PROTOCOL
		UDP	SOURCE PORT; DESTINATION PORT
GROUP 2	TENANT ISOLATION	VXLAN; MAC; IP	VNID; MAC SOURCE ADDRESS
			MAC DESTINATION ADDRESS
			TYPE; SOURCE IP ADDRESS
			DESTINATION IP ADDRESS; PROTOCOL
		UDP	SOURCE PORT
			DESTINATION PORT
GROUP 3	DEVICE MOBILITY	GTP	TUNNEL IDENTIFIER
		IP	SOURCE IP ADDRESS; DESTINATION IP ADDRESS
			PROTOCOL
		UDP	SOURCE PORT
			DESTINATION PORT
GROUP 4	NB-IoT APPLICATION	COAP	CODE
			VERSION
			MESSAGE ID