System and method for identifying subscriber entity position

This invention relates to a customer entity position identification system and method used in LAN. According to packet data a customer MAC address code istransfered to a remote server for identification which looks for the HUB and its port number connecting with the user based on MAC address code then to use the numbers of the said network connector and port supporting SNMP protocol to contrast with the network connector entity position cross-reference list supporting SNMP protocol in the server to find out the said user entity position suitable for indentification and positioning in LAN.