Independent detection and filtering of undesirable packets
US8271678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2001 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | May 11, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1416
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A server, using a deterministic function, a secret value and persistent information of a packet, destined for a client device, generates and includes a conversation identifier for inclusion with the packet. The client device in turn includes the conversation identifier in a subsequent packet sent by the client device destined for the server. An intermediate routing device having knowledge of the deterministic function and the secret value, upon receiving the packet en-route from the client device to the server, would independently determine whether the packet is a part of a conversation between the client and the server, by independently verifying the included conversation identifier, and forward or not forward the packet accordingly. As result, undesirable packets may be independently detected and filtered for the server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.