Dynamic address assignment for access control on DHCP networks
US7590733B2 · kind B2 · utility
19Cited by
28References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2005 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Jan 9, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/101
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods of managing security on a computer network are disclosed. The computer network includes a restricted subnet and a less-restricted subnet. Access to the restricted subnet is controlled by a network filter, optionally inserted as a software shim on a DHCP server. In some embodiments, the network filter is configured to manipulate relay IP addresses to control whether the DHCP server provides, in a DHCPOFFER packet, an IP address that can be used to access the restricted subset. In some embodiments, configuration information is communicated between the DHCP server and the network filter via DHCPOFFER packets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.