Scanner probe detection
US11711389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2021 |
| Grant date | Jul 25, 2023 |
| Priority date | — |
| Expiry date | Oct 21, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/166
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, including identifying, in network data traffic, multiple scans, each of the scans including an access, in the traffic, of multiple ports on a given destination node by a given source node during a time period. A group of high-traffic ports are identified in the traffic that include one or more ports that receive respective volumes of the traffic that exceed a threshold, and respective signatures are generated for the identified port scans that indicate the ports other than the high-traffic ports that were accessed in each of the port scans. A respective frequency of occurrence of each of the signatures over the set of the port scans is computed, and a whitelist of the signatures for which the respective frequency of occurrence is greater than a threshold is assembled. Upon detecting a port scan for which the respective signature is not whitelisted, a preventive action is initiated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.