Transferring encrypted packets over a public network
US5898784A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1997 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Nov 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2212/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention features receiving encrypted network packets sent over a network at a network interface computer, and passing the encrypted network packets to a computer on an internal network. The invention also features receiving encrypted network packets at a first computer over a network from a second computer, examining a field in each network packet to determine which of a plurality of encryption algorithms was used to encrypt the network packet, and decrypting the network packet in accordance with the determined encryption algorithm. The invention further features receiving network packets sent over a network, determining which virtual tunnel each network packet was sent over, and routing each network packet to a destination computer in accordance with the determined virtual tunnel. The invention features encrypting network packets at a computer connected to an internal network, passing the encrypted network packet over the internal network to a public network interface computer, and passing the encrypted network packet over a public network connected to the network interface computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.