Method and device for defending DHCP attack
US10148676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2017 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Aug 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1441
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for defending a DHCP attack is provided. The method includes monitoring packets transmitted by a client terminal coupled to a target port, and determining, in IP addresses allocated for the client terminal coupled to the target port, the number of the IP addresses generating no packet traffic in a preset first time. And the method further includes if the number of the IP addresses generating no packet traffic reaches a preset first threshold, determining that the client terminal coupled to the target port has risk of attacking, and restricting DHCP service of the target port. A device for defending a DHCP attack is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.