Method and apparatus for discovering internet addresses
US7483393B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2004 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Dec 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/2578
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Local address return services reduce the burden on central address return servers. A local client determines whether an intermediary Network Address Translator (NAT) resides between a local NAT and a public Internet network. The local address return service is enabled when no intermediary NAT resides between the local NAT and the public Internet network. The local address return service is disabled and the central address return service is used when an intermediary NAT resides between the local NAT and the public Internet network. In one embodiment, the local client is a Simple Traversal of User Datagram Protocol (UDP) Through Network Address Translators (NATS) (STUN) client and the local and central address return services are STUN servers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.