The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2016
Filed:
Jul. 02, 2013
Electronics and Telecommunications Research Institute, Daejeon, KR;
Byoung-Koo Kim, Daejeon, KR;
Dong Ho Kang, Daejeon, KR;
Seon-Gyoung Sohn, Daejeon, KR;
Youngjun Heo, Daejeon, KR;
Jung-Chan Na, Daejeon, KR;
Ik Kyun Kim, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
A method for detecting an abnormal traffic on a control system protocol, includes: checking whether session information exists in a management table; adding a new entry to the management table; checking whether a transaction ID in a table entry is the same as that of the received MODBUS request message; and checking whether data and length thereof of the received MODBUS request message are the same as those in the table entry. Further, the method includes detecting an abnormal traffic; and updating the table entry with packet information of the MODBUS request message.