Internet protocol security tunnel maintenance method, apparatus, and system
US11038846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2019 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Nov 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/061
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An Internet Protocol Security tunnel maintenance method, apparatus, and system including a terminal device that negotiates with a VPN gateway based on a first IP address and according to the IKE protocol, and establishes an IPsec tunnel based on SAs obtained through negotiation; determines, the first IP address changes to a second IP address; sends a first request packet to the VPN gateway, where the first request packet carries the second IP address and a first tunnel identifier, where the first request packet is used to request to update a first SA record, and where the first SA record includes a correspondence between the SAs, the first IP address, and the first tunnel identifier; generates a second tunnel identifier based on the second IP address and a predefined algorithm; and replaces the first tunnel identifier in a second SA record with the second tunnel identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.