Method and system for allocating persistent private network addresses between private networks
US6781982B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1999 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Oct 26, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/5014
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for allocating persistent private network addresses between private networks. An Internet Protocol (“IP”) address of a multimedia device (e.g., a Voice-over-IP (“VoIP”) device) is publicly available and the device, the device's location or the device's user may be identified and become the target of a hacker. Persistent private IP addresses may be used for such multimedia devices. Persistent private IP addresses are unique and persistent for a duration of a multimedia session between two private networks. The persistent private IP addresses are not routable on a public network like the Internet. The persistent private IP addresses allow a first network device on a first private network to establish a data session with a second network device on a second private network over a public network such as the Internet. The first network device and the second network device negotiate a pair of private IP addresses that are persistent, private and unique across both the first private network and the second private network address space. The persistent private IP addresses may be allocated by Distributed Network Address Translation (“DNATR…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.