Patent US 10,135,930

A system and method for discovering Internet Protocol (IP) network address and port translation bindings is disclosed. According to one embodiment, a system for creating IP data records, includes a carrier grade network address and port translation (CGNAPT) node in communication with a private network on an internal side and a public network on an external side. The system further includes a private Ethernet span port disposed on the internal side of the CGNAPT node that receives packet streams traversing the CGNAPT node. A public Ethernet span port is disposed on the external side of the CGNAPT node that receives packet streams traversing the CGNAPT node. The private Ethernet span port and the public Ethernet span port copy packet streams traversing the CGNAPT node and deliver the copied packet streams to a deep packet inspection host.