Automatically detecting malicious computer network reconnaissance by updating state codes in a histogram
US7356587B2 · kind B2 · utility
9Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2003 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Jan 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/166
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A detection and response system that generates an Alert if unauthorized scanning is detected on a computer network that includes a look-up table to record state value corresponding to the sequence in which SYN, SYN/ACK and RST packets are observed. A set of algorithms executed on a processing engine adjusts the state value in response to observing the packets. When the state value reaches a predetermined value indicating that all three packets have been seen, the algorithm generates an Alert.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.