Router for preventing port scans and method utilizing the same
US8261349B2 · kind B2 · utility
46Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 2010 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Jan 31, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1416
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A router and method for preventing port scans using a router includes receiving a datagram from a remote computer, transferring the datagram to a local computer, and receiving a response datagram from the local computer. The router and method further includes dropping the response datagram if the response datagram is an Internet Control Messages Protocol (ICMP) port unreachable datagram and the ICMP port unreachable datagram is abnormal, and recording a port scan event of the remote computer into the log system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.