Method and apparatus for network address translation
US9013992B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Aug 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for improved network address translation (NAT) to enable efficient translation of packets destined for communication systems within a domain utilizing network addresses that are incompatible with the source and destination addresses indicated in packets delivered from the global Internet. Since the addresses are not compatible with global Internet addresses, delivery cannot be accomplished except by some method of address translation. Traditional systems have not been constructed to enable such inbound translations, providing instead only communications outbound from the incompatibly addressed domain towards the global Internet. An embodiment of the system employs deep packet inspection (DPI) search techniques known from widely deployed systems in use today, to acquire a resource identifier, and to attempt to match the resource identifier to complete the flow of traffic on a packet-by-packet basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.