The purpose of this research has been to increase the effectiveness of Intrusion Detection Systems in the enforcement of computer security. Current preventative security measures are clearly inadequate as evidenced by constant examples of compromised computer security seen in the news. Intrusion Detection Systems have been created to respond to the inadequacies of existing preventative security methods. This research presents the two main approaches to Intrusion Detection Systems and the reasons that they too fail to produce adequate security. Promising new methods are attempting to increase the effectiveness of Intrusion Detection Systems with one of the most interesting approaches being that taken by the TIAA system. The TIAA system uses a method based on employing prerequisites and consequences of security attacks to glean cohesive collections of attack data from large data sets. The reasons why the TIAA approach ultimately fails are discussed, and the possibility of using the TIAA system as a preprocessor for recognizing novel attacks is then presented along with the types of data this approach will produce. In the course of this research the VisualBayes software package was created to make use of the data generated by the TIAA system. VisualBayes is a complete graphical system for the creation, manipulation, and evaluation of Bayesian networks. The VisualBayes also uses the Bayesian networks to create a visualization of observations and the probabilities that result from them. This is a new feature that has not been seen in other Bayesian systems up to this point.
| Identifer | oai:union.ndltd.org:NCSU/oai:NCSU:etd-11292005-200153 |
| Date | 03 May 2006 |
| Creators | Williams, Lloyd |
| Contributors | Robert StAmant |
| Publisher | NCSU |
| Source Sets | North Carolina State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://www.lib.ncsu.edu/theses/available/etd-11292005-200153/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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