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Application of a Layered Hidden Mark...

Taub, Lawrence.

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Application of a Layered Hidden Markov Model in the Detection of Network Attacks.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Application of a Layered Hidden Markov Model in the Detection of Network Attacks./
作者:	Taub, Lawrence.
面頁冊數:	114 p.
附註:	Source: Dissertation Abstracts International, Volume: 74-07(E), Section: B.
Contained By:	Dissertation Abstracts International74-07B(E).
標題:	Computer Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3557131
ISBN:	9781267998910

Application of a Layered Hidden Markov Model in the Detection of Network Attacks.
Taub, Lawrence.

Application of a Layered Hidden Markov Model in the Detection of Network Attacks. - 114 p.

Source: Dissertation Abstracts International, Volume: 74-07(E), Section: B.

Thesis (Ph.D.)--Nova Southeastern University, 2013.

Network-based attacks against computer systems are a common and increasing problem. Attackers continue to increase the sophistication and complexity of their attacks with the goal of removing sensitive data or disrupting operations. Attack detection technology works very well for the detection of known attacks using a signature-based intrusion detection system. However, attackers can utilize attacks that are undetectable to those signature-based systems whether they are truly new attacks or modified versions of known attacks. Anomaly-based intrusion detection systems approach the problem of attack detection by detecting when traffic differs from a learned baseline. In the case of this research, the focus was on a relatively new area known as payload anomaly detection. In payload anomaly detection, the system focuses exclusively on the payload of packets and learns the normal contents of those payloads. When a payload's contents differ from the norm, an anomaly is detected and may be a potential attack. A risk with anomaly-based detection mechanisms is they suffer from high false positive rates which reduce their effectiveness. This research built upon previous research in payload anomaly detection by combining multiple techniques of detection in a layered approach. The layers of the system included a high-level navigation layer, a request payload analysis layer, and a request-response analysis layer. The system was tested using the test data provided by some earlier payload anomaly detection systems as well as new data sets. The results of the experiments showed that by combining these layers of detection into a single system, there were higher detection rates and lower false positive rates.

ISBN: 9781267998910Subjects--Topical Terms:

626642
Computer Science.

Application of a Layered Hidden Markov Model in the Detection of Network Attacks.
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