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Detecting and Countering System Intrusions Using Software Wrappers
This paper introduces an approach that integrates intrusion detection (ID) techniques with software wrapping technology to enhance a system's ability to defend against intrusions. In particular, we employ the NAI Labs Generic Software Wrapper Toolkit to implement all or part of an intrusion detection system as ID wrappers. An ID wrapper is a software layer dynamically inserted into the kernel that can selectively intercept and analyze system calls performed by processes as well as respond to intrusive events. We have implemented several ID wrappers that employ three different major intrusion detection techniques. Also, we have combined different ID techniques by composing ID wrappers at run-time. We tested the individual and composed ID wrappers using several existing attacks and measured their impact on observed application performance. We conclude that intrusion detection algorithms can be easily encoded as wrappers that perform efficiently inside the kernel. Also, kernel-resident ID wrappers can be easily managed, allowing cooperation among multiple combined techniques to enforce a coherent global ID policy. In addition, intrusion detection algorithms can benefit from the extra data made accessible by wrappers.
author = {Calvin Ko and Timothy Fraser and Lee Badger and Douglas Kilpatrickv},
title = {Detecting and Countering System Intrusions Using Software Wrappers},
booktitle = {9th USENIX Security Symposium (USENIX Security 00)},
year = {2000},
address = {Denver, CO},
url = {https://www.usenix.org/conference/9th-usenix-security-symposium/detecting-and-countering-system-intrusions-using-software},
publisher = {USENIX Association},
month = aug
}
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