Apparatus and method for identifying an access network of a networked terminal

A method for identifying an access network, the method comprising:

• capturing with a packet capturing unit a plurality of packets transmitted or received by a server;
• classifying with a flow classifying unit each of the captured packets into individual flows with reference to at least one of an origination address, a destination address, and a port number;
• calculating with a round trip time (RTT) calculating unit, RTT values from the packets classified into a flow of the individual flows;
• determining with an access network determining unit that an origination address included in a packet classified into the flow is an address accessing the server through a first communication network when the RTT calculated values exceed a reference value;
• and
• storing with a storage unit the address accessing the server through the first communication network.

One or more non-transitory computer-readable storage media having stored thereon a computer program that, when executed by one or more processors, causes the one or more processors to perform acts comprising:

• capturing with a packet capturing unit a plurality of packets transmitted or received by a server;
• classifying with a flow classifying unit each of the captured packets into individual flows with reference to at least one of an origination address, a destination address, and a port number;
• calculating with a round trip time (RTT) calculating unit, RTT values from the packets classified into a flow of the individual flows;
• determining with an access network determining unit that an origination address included in a packet classified into the flow is an address accessing the server through a first communication network when the RTT calculated values exceed a reference value;
• and
• storing with a storage unit the address accessing the server through the first communication network.