Method and apparatus for network address translation integration with internet protocol security
US7143188B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2002 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jun 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/24
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for enhanced security for communication over a network, and more particularly to Network Address Translation (NAT) integration Internet Protocol Security (IPSec), is described. A client computer makes a second address request in order to prompt an address server to provide a public address. This address, recorded in a mapping table accessible by a gateway computer. This public address is used as a source address for packets from a client using IPSec. When the gateway computer identifies a packet's source address as one of it's public addresses, NAT is suspended for this packet, and the packet is routed without NAT. Incoming traffic is routed using the mapping table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.