Method and system for enabling firewall traversal
US7594259B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2004 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Oct 20, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0263
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for enabling firewall traversal of media communications from a client device. The firewall infers authentication or validation of the client device based upon communications between the client device and a device controller known to the firewall. The firewall monitors packets sent from the device controller to the client device. If the device controller sends packets to the client device for a sufficiently long period of time and with sufficient frequency, or if the packets are of a certain type, then the firewall deems the client device to be validated and permits the client device to send data packets through the firewall. The device controller may include a media gateway controller, a port discovery server, or similar such device controllers. The device controller and client device communicate based upon a protocol, which need not be understood by the firewall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.