Method for first packet authentication
US8346951B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Mar 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1458
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a preferred embodiment of the invention, a network client (42) inserts an authorization key (38) into the SEQ (30) and ACK (32) fields of a TCP connection request (56). The TCP connection request (56) is sent to a authorizing server (46). The authorizing server (46) extracts the authorization key (38) and uses the authorization key (38), with other implicit and explicit data contained within the TCP connection request (56) to authorize the TCP connection request (56). If the TCP connection request (56) is authorized, the authorizing server (46) sends a TCP-SYN/ACK (58) back to the network client (42) as described in the TCP protocol specification. If the TCP connection request (56) is denied, the TCP connection request (56) is discarded and nothing is sent back to the network client (42).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.