Network address translation with filters using hierarchical rules
US11646998B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Aug 27, 2020 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Sep 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/101
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system administrator can specify NAT mappings to perform NAT translations in a switch. The administrator can specify an ACL to filter packets to be translated. Filter rules generated from the ACL are stored in a first memory store in a switch and NAT rules generated from the NAT mappings are stored in a second memory store separate from the first memory store. When a packet matches one of the filter rules a tag that identifies the ACL is associated with the packet. When the tagged packet matches one of the NAT rules, the packet is translated according to the matched NAT rule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.