Network firewall for mitigating against persistent low volume attacks
US11405359B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Dec 21, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1483
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network firewall detects and protects against persistent low volume attacks based on a sequence of network data having a pattern that matches by some threshold or percentage a sequence of network data from an earlier iteration of the same persistent low volume attack. The attack patterns are derived from tokenizing one or more elements from a captured sequence of network data that is representative of an attack iteration. Counts for different resulting tokens may be stored in a feature vector that represents the attack pattern. If subsequent sequences of network data have a sufficient number of similar token, a pattern match can be identified and the firewall can take protective action including blacklisting the sending clients, blocking the traffic, redirecting the traffic, sending a problem to verify the sender is an actual user, or other actions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.