Secure network address translation (NAT) port block allocation
US9479597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2015 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Aug 14, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/668
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A node is configured to receive, from a second node, a request to establish a session; perform, in response to the request, a network address translation (NAT) operation to establish the session, the NAT operation causing a first port block to be allocated to the session, the first port block including a first set of ports via which traffic, associated with the session, is transported; determine that the set of ports are no longer available for the session; determine whether a quantity of times that the first port block has been allocated to the session is greater than a threshold; and retain the first port block, for the session, when the quantity of times that the first port block has been allocated to the session is not greater than the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.