Network address translation with in-band return path resolution
US11695690B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2021 |
| Grant date | Jul 4, 2023 |
| Priority date | — |
| Expiry date | Nov 8, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments of a method of communicating a packet by a network address translation (NAT) enabled router, are described. In an embodiment, the method includes receiving a return packet to be communicated to a destination. The destination is associated with a first source address in the context of a forward packet. The method further includes determining a return path to transmit the return packet to the destination based on security association data. The security association data is pre-recorded in a routing table of the NAT enabled router when the forward packet is received, prior to receiving the return packet, over a forward path established between the NAT enabled router and an enterprise node. The security association data uniquely identifies the forward path as the return path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.