IGMP group leave message blocking
US10574688B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jun 1, 2017 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Aug 12, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0428
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of cyber-attack protection is provided. The method includes receiving one or more internet group management protocol (IGMP) membership report messages on one or more ports of a network switch. A table is maintained associating each of the one or more ports to the one or more group addresses of which any hosts coupled to that port are members. An IGMP group leave message is received at a first port of the network switch. A group address in the group leave message is compared to all group addresses associated in the table with the first port. If the group address in the group leave message does not match any group address associated with the first port, the group leave message is dropped without being acted on in accordance with IGMP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.