Determining the type of upstream network address translation from a home gateway
US9191362B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2012 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Oct 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/5014
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems are provided for assisting installation of network devices including determining the type (e.g., consumer grade or Carrier Grade) of an upstream Network Address Translation (NAT) device in a double NAT environment (e.g., Large Scale NAT or NAT444) and automatically enabling or disabling NAT or bridging in the network device as may be needed or desired according to attributes that are deduced about the upstream network device. An example of a method includes: broadcasting a Dynamic Host Control Protocol (DHCP) DISCOVER packet to an upstream network; receiving a DHCP OFFER from an upstream Network Address Translation (NAT) device in response to the DHCP DISCOVER packet; deducing attributes of the upstream NAT device with assistance of information from the received DHCP OFFER; and determining whether or not to disable Network Address Translation and bridge to the upstream network according to the deduced attributes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.