Method and arrangement for providing security through network address translations using tunneling and compensations
US6957346B1 · kind B1 · utility
64Cited by
4References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1999 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Jun 15, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/663
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention provides a method for providing network security services, such as those provided by the IPSEC protocol, through network address translation (NAT). The method is based on determining the transformations that occur on a packet and compensating for the transformations. Because only TCP and UDP protocols work through NATs, the IPSEC AH/ESP packets are encapsulated into UDP packets for transport. Special operations are performed to allow reliable communications in such environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.