DHCP-communications monitoring by a network controller in software defined network environments
US11509686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2019 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Nov 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45595
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an embodiment, a computer-implemented method for DHCP-communications monitoring by a network controller in software defined networks is disclosed. A method comprises detecting that a virtualized compute instance is instantiated on a host computer; generating, and transmitting to a port manager executing on the host computer, instructions to set a BLOCK-EXCEPT-DHCP status on a port assigned to the virtualized compute instance; determining whether an IP address has been assigned to the port by a DHCP service; and if it has: generating, and transmitting to the port manager, instructions to set a NORMAL status on the port; generating, and transmitting to the port manager, a SpoofGuard configured with the IP address assigned to the port; based on notifications received from the SpoofGuard, determining whether the IP address assigned to the port of the virtualized compute instance has been misused, expired or spoofed; and if it has, transmitting instructions to set the BLOCK-EXCEPT-DHCP status on the port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.