Method and apparatus for datastream analysis and blocking
US7310815B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2003 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Jul 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/145
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for datastream analysis and blocking. According to one embodiment of the invention, a network access device, analyzes (without proxying) each of a stream of packets traversing a single connection through the network access device from an external host to a protected host. In addition, the network access device forwards each allowed packet of the stream of packets as long as the connection is active. However, if one of the stream of packets is determined to be disallowed as a result of the analyzing, then the network access device discards the disallowed packet and terminates the connection, causing the protected host to discard those packets received on the terminated connection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.