Method and apparatus for forwarding generic routing encapsulation packets at a network address translation gateway
US10530736B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2016 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Oct 11, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/622
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a method includes receiving on a private network at a Network Address Translation (NAT) gateway, a Generic Routing Encapsulation (GRE) packet comprising a client address and a GRE node private Internet Protocol (IP) address, mapping the client address to the GRE node private IP address at the NAT gateway, storing the mapping at the NAT gateway, replacing the GRE node private IP address in the GRE packet with a public IP address of the NAT gateway, and transmitting the GRE packet from the NAT gateway on a public network. Wherein the mapping is used in forwarding packets received on the public network at the NAT gateway to a client on the private network. An apparatus and logic are also disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.