Method for encapsulating and transmitting a message includes private and forwarding network addresses with payload to an end of a tunneling association
US6523068B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1999 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Aug 27, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods for processing a media flow at an end of a tunneling association in a data network. One method includes receiving a data packet on a public network, such as the Internet, and recognizing that it encapsulates another data packet for a virtual connection to an application. The virtual connection is addressed by private network addresses. Another method includes constructing a data packet for a virtual connection to the application and encapsulating it for transmission on the public network. The methods provide for hiding the identity of the originating and terminating ends of the tunneling association from the other users of the public network. Hiding the identities may prevent interception of media flow between the ends of the tunneling association or eavesdropping on Voice-over-Internet-Protocol calls. The methods increase the security of communication on the data network without imposing a computational burden on the devices in the data network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.