Method and apparatus for packet traversal of a network address translation device
US7738468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2005 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Mar 23, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/2578
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A characterization method for a network address translation (NAT) device by an internal computer behind the NAT device includes creating a plurality of sockets; binding the plurality of sockets, respectively, to a plurality of ports; transmitting a plurality of STUN requests in user datagram protocol (UDP) packets to a plurality of STUN servers, wherein each STUN request is associated with one of the sockets; determining that the NAT device does not support UDP packets if responses are not received from the STUN servers; and determining a set of NAT characteristics of the NAT device if a response is received from each of the STUN servers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.