Dissertations / Theses on the topic 'System and network security'
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Yucel, Okan. "Information System Security." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1260303/index.pdf.
Full textMantere, M. (Matti). "Network security monitoring and anomaly detection in industrial control system networks." Doctoral thesis, Oulun yliopisto, 2015. http://urn.fi/urn:isbn:9789526208152.
Full textTiivistelmä Kehittyneet yhteiskunnat käyttävät teollisuuslaitoksissaan ja infrastruktuuriensa operoinnissa monimuotoisia automaatiojärjestelmiä. Näiden automaatiojärjestelmien tieto- ja kyberturvallisuuden tila on hyvin vaihtelevaa. Laitokset ja niiden hyödyntämät järjestelmät voivat edustaa usean eri aikakauden tekniikkaa ja sisältää useiden eri aikakauden heikkouksia ja haavoittuvaisuuksia. Järjestelmät olivat aiemmin suhteellisen eristyksissä muista tietoverkoista kuin omista kommunikaatioväylistään. Tämä automaatiojärjestelmien eristyneisyyden heikkeneminen on luonut uuden joukon uhkia paljastamalla niiden kommunikaatiorajapintoja ympäröivälle maailmalle. Nämä verkkoympäristöt ovat kuitenkin edelleen verrattaen eristyneitä ja tätä ominaisuutta voidaan hyödyntää niiden valvonnassa. Tässä työssä esitetään tutkimustuloksia näiden verkkojen turvallisuuden valvomisesta erityisesti poikkeamien havainnoinnilla käyttäen hyväksi koneoppimismenetelmiä. Alkuvaiheen haasteiden ja erityispiirteiden tutkimuksen jälkeen työssä käytetään itsejärjestyvien karttojen (Self-Organizing Map, SOM) algoritmia esimerkkiratkaisun toteutuksessa uuden konseptin havainnollistamiseksi. Tämä uusi konsepti on tapahtumapohjainen koneoppiva poikkeamien havainnointi (Event-Driven Machine Learning Anomaly Detection, EMLAD). Työn kontribuutiot ovat seuraavat, kaikki teollisuusautomaatioverkkojen kontekstissa: ehdotus yhdeksi anomalioiden havainnoinnissa käytettävien ominaisuuksien ryhmäksi, koneoppivan poikkeamien havainnoinnin käyttökelpoisuuden toteaminen, laajennettava ja joustava esimerkkitoteutus uudesta EMLAD-konseptista toteutettuna Bro NSM työkalun ohjelmointikielellä
Coffey, Thomas. "A distributed global-wide security system." Thesis, University of Ulster, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260989.
Full textScully, Michael N. B. "Network and system security in an information age." Honors in the Major Thesis, University of Central Florida, 2000. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/204.
Full textBachelors
Business Administration
Management Information Systems
Benbrook, Jimmie Glen 1943. "A SYSTEM ANALYSIS OF A MULTILEVEL SECURE LOCAL AREA NETWORK (COMPUTER)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275531.
Full textLessner, Dirk. "Network security for embedded systems /." [St. Lucia, Qld.], 2005. http://adt.library.uq.edu.au/public/adt-QU20060215.160952/index.html.
Full textBurchett, Ian. "Quantifying Computer Network Security." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1118.
Full textSong, Zixuan. "A Network based Home surveillance/ monitoring system : Router based Deployment and Network Security." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-47314.
Full textWang, Haiyuan. "Security Architecture for the TEAMDEC System." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/9778.
Full textMaster of Science
Onder, Hulusi. "A Security Management System Design." Thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608515/index.pdf.
Full textNiebur, Dagmar. "Kohonen self-organizing neural network for power system security assessment /." [S.l.] : [s.n.], 1994. http://library.epfl.ch/theses/?nr=1244.
Full textMukantabana, Beatrice. "Ethernet sniffing : a big threat to network security." Virtual Press, 1994. http://liblink.bsu.edu/uhtbin/catkey/897495.
Full textDepartment of Computer Science
Atkins, William Dee. "Design and implementation of a hardened distributed network endpoint security system for improving the security of internet protocol-based networks." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/Final_Thesis_09007dcc8031d3b0.pdf.
Full textVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed April 11, 2007) Includes bibliographical references (p. 54-55).
Maharjan, Nadim, and Paria Moazzemi. "Telemetry Network Intrusion Detection System." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581632.
Full textTelemetry systems are migrating from links to networks. Security solutions that simply encrypt radio links no longer protect the network of Test Articles or the networks that support them. The use of network telemetry is dramatically expanding and new risks and vulnerabilities are challenging issues for telemetry networks. Most of these vulnerabilities are silent in nature and cannot be detected with simple tools such as traffic monitoring. The Intrusion Detection System (IDS) is a security mechanism suited to telemetry networks that can help detect abnormal behavior in the network. Our previous research in Network Intrusion Detection Systems focused on "Password" attacks and "Syn" attacks. This paper presents a generalized method that can detect both "Password" attack and "Syn" attack. In this paper, a K-means Clustering algorithm is used for vector quantization of network traffic. This reduces the scope of the problem by reducing the entropy of the network data. In addition, a Hidden-Markov Model (HMM) is then employed to help to further characterize and analyze the behavior of the network into states that can be labeled as normal, attack, or anomaly. Our experiments show that IDS can discover and expose telemetry network vulnerabilities using Vector Quantization and the Hidden Markov Model providing a more secure telemetry environment. Our paper shows how these can be generalized into a Network Intrusion system that can be deployed on telemetry networks.
Fuloria, Shailendra. "Robust security for the electricity network." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610100.
Full textNesteruk, Erik A. "Security considerations for network-centric weapon systems." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep%5FNesteruk.pdf.
Full textThesis Advisor(s): Goshorn, Rachel ; Huffmire, Ted. "September 2009." Description based on title screen as viewed on November 5, 2009. Author(s) subject terms: Network-Centric, Weapons Systems, Systems Engineering, Security, Cryptography, Authentication, Espionage, Sabotage, Confidentiality, Integrity, Availability Includes bibliographical references (p. 75-78). Also available in print.
Oh, Khoon Wee. "Wireless network security : design considerations for an enterprise network /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FOh.pdf.
Full textAlfayez, Fayez. "A wireless sensor network system for border security and crossing detection." Thesis, Manchester Metropolitan University, 2015. http://e-space.mmu.ac.uk/615894/.
Full textFerreira, Luis Antonio Fialho. "A network-based approach to power system security assessment and control." Diss., Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/15721.
Full textMorrissey, Joseph Patrick. "The extension and hardware implementation of the comprehensive integrated security system concept." Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/336.
Full textHodack, David. "Information Assurance (IA) Considerations for a Telemetry Network System (TmNS)." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/604248.
Full textThe integrated Network Enhanced Telemetry (iNET) project was launched by the Central Test and Evaluation Investment Program (CTEIP) to foster network enhanced instrumentation and telemetry. The iNET program is preparing for the TmNS system demonstration. The goal of the demonstration is to prove that the proposed TmNS will meet the Test Capability Requirements Document (TCRD) and validate the iNET standards. One aspect of the preparation is looking at the IA issues and making decisions to ensure that the system will be certified and accredited, meet user needs, and be secure. This paper will explore a few of these considerations.
Shu, Guoqiang. "Formal Methods and Tools for Testing Communication Protocol System Security." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1211333211.
Full textDementis, Georgios Sousa Goncalo. "A legal reasoning component of a network security command and control system." Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Mar/10Mar%5FDementis.pdf.
Full textThesis Advisor(s): Michael, James B. Second Reader: Wingfield, Thomas C. ; Sarkesain, John F. "March 2010." Description based on title screen as viewed on April 26, 2010. Author(s) subject terms: Cyberspace, Cyberspace Defense, Network Defense, Distributed Systems, Command and Control, Battle Management, Information Assurance, Situational Awareness. Includes bibliographical references (p. 73-77). Also available in print.
Sousa, Goncalo. "A legal reasoning component of a network security command and control system." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5457.
Full textThere are numerous computer-aided tools to enable Computer Network Defense. However, their effectiveness in countering attacks is less than optimal when they are used independently of one another. Research has identified the requirements for an integrated command and control (C2) system that is able to conduct full-spectrum operations in the cyberspace environment. The most notable of that research revolves around the development and experimentation with the prototype system known as Cyber Command, Control and Information Operations System (C3IOS). C3IOS provides for a loose confederation of the cooperating systems with interaction between systems going through C2 interfaces. In this thesis, the authors introduce into C3IOS a means to support the commander's ability to take measured responses to coercive actions in a timely manner, specifically to facilitate the interaction between experts in the law of information conflict and information warriors responding to a cyber attack. The authors' research results in a set of use cases and requirements for the C2 understanding, planning, and deciding activities involved in such a capability, using Schmitt's analysis as an example.
Bell, Patrick M. "Development of Local Homeland Security Networks in the State of Florida: A Social Network Analysis Approach." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/574.
Full textUmeh, Njideka Adaku. "Security architecture methodology for large net-centric systems." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/Umeh_09007dcc8049b3f0.pdf.
Full textVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed December 6, 2007) Includes bibliographical references (p. 60-63).
Cheng, Kah Wai. "Distributed deployment of Therminators in the network." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Dec%5FCheng%5Kah.pdf.
Full textSimons, William R. "The challenges of network security remediation at a regional university." [Johnson City, Tenn. : East Tennessee State University], 2005. http://etd-submit.etsu.edu/etd/theses/available/etd-0209105-075524/unrestricted/SimonsW022105f.pdf.
Full textTitle from electronic submission form. ETSU ETD database URN: etd-0209105-075524 Includes bibliographical references. Also available via Internet at the UMI web site.
Ashe, James Patrick. "A vulnerability assessment of the East Tennessee State University administrative computer network." [Johnson City, Tenn. : East Tennessee State University], 2004. http://etd-submit.etsu.edu/etd/theses/available/etd-0301104-151512/unrestricted/AsheJ030204b.pdf.
Full textTitle from electronic submission form. ETSU ETD database URN: etd-0301104-151512. Includes bibliographical references. Also available via Internet at the UMI web site.
Rivera, Polanco Sergio A. "AUTOMATED NETWORK SECURITY WITH EXCEPTIONS USING SDN." UKnowledge, 2019. https://uknowledge.uky.edu/cs_etds/87.
Full textRanang, Martin Thorsen. "An Artificial Immune System Approach to Preserving Security in Computer Networks." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2002. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-255.
Full textIt is believed that many of the mechanisms present in the biological immune system are well suited for adoption to the field of computer intrusion detection, in the form of artificial immune systems. In this report mechanisms in the biological immune system are introduced, their parallels in artificial immune systems are presented, and how they may be applied to intrusion detection in a computer environment is discussed. An artificial immune system is designed, implemented and applied to detect intrusive behavior in real network data in a simulated network environment. The effect of costimulation and clonal proliferation combined with somatic hypermutation to perform affinity maturation of detectors in the artificial immune system is explored through experiments. An exact expression for the probability of a match between two randomly chosen strings using the r-contiguous matching rule is developed. The use of affinity maturation makes it possible to perform anomaly detection by using smaller sets of detectors with a high level of specificity while maintaining a high level of cover and diversity, which increases the number of true positives, while keeping a low level of false negatives.
Wright, Roger E. "Management System for Heterogeneous Networks security services." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA349548.
Full text"June 1998." Thesis advisor(s): Cynthia E. Irvine. Includes bibliographical references (p. 261-263). Also available online.
Alquhayz, Hani. "Security management system for 4G heterogeneous networks." Thesis, De Montfort University, 2015. http://hdl.handle.net/2086/11124.
Full textTang, Han. "Security analysis of a cyber-physical system." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.umr.edu/thesis/pdf/Tang_09007dcc803cfb5c.pdf.
Full textVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed November 30, 2007) Includes bibliographical references (p. 55-57).
Kvastad, Johan. "ICT Security of an Electronic Health Record System: an Empirical Investigation : An in depth investigation of ICT security in a modern healthcare system." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194121.
Full textEn empirisk undersökning av säkerheten inom ett modernt elektroniskt patientjournal-system har utförts. Undersökningen genomfördes med hjälp av dynamisk analys, manuell testning och intervjuer med utvecklarna. Resultatet indikerar att system för elektroniska patientjournaler har stora brister inom autentisering, vilka uppstår p.g.a. att flera olika kommersiella system måste samarbeta. Problemen är så allvarliga att med tillgång till en enda dator på intranätet kan en stor databas med patientdata äventyras, inklusive radiologisk data gällande patienterna. Vanliga websårbarheter fanns också, så som injektioner av skript och inkorrekt konfigurerade HTTP säkerhetsheaders. Dessa sårbarheter mitigerades starkt genom användandet av bibliotek för webinterface.
Ademi, Muhamet. "Web-Based Intrusion Detection System." Thesis, Malmö högskola, Fakulteten för teknik och samhälle (TS), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-20271.
Full textYang, Yi. "Intrusion detection for communication network security in power systems." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603572.
Full textFong, Ching-hang. "A mobile agent based framework for security enhanced autonomous network and system management (MASAM)." Thesis, University of Ulster, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529528.
Full textPeng, Liangjian. "Applications of artificial neural networks to power systems network reduction and static security assessment." Thesis, University of Strathclyde, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366090.
Full textZheng, Wei. "An approach to behaviour-based intrusion detection system : implementation of a role-based network access control system and a proposal for three detection strategies." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2009. https://ro.ecu.edu.au/theses/1827.
Full textAltunbasak, Hayriye Celebi. "Layer 2 security inter-layering in networks." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-11172006-130414/.
Full textWardi, Yorai, Committee Member ; Abler, Randy, Committee Member ; Copeland, John, Committee Member ; Owen, Henry, Committee Chair ; Ahamad, Mustaque, Committee Member.
Horn, John F. "IPSec-based dynamic security services for the MYSEA environment." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FHorn.pdf.
Full textThesis Advisor(s): Cynthia E. Irvine, Thuy D. Nguyen. Includes bibliographical references (p. 107-109). Also available online.
Srivatsa, Mudhakar. "Security Architecture and Protocols for Overlay Network Services." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16284.
Full textRumelioglu, Sertac. "Evaluation of Embedded Firewall System." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FRumelioglu.pdf.
Full textMcGovern, Susan C. "Information security requirements for a coalition wide area network." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA397542.
Full textThesis advisor(s): Irvine, Cynthia E. "June 2001." Includes bibliographical references (p. 77-78). Also available online.
Lee, Wen-ping, and 李文平. "Active Network Security Immune System." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/66633183042476585713.
Full text中華大學
資訊工程學系碩士班
92
With the popularity of Internet, the problem of computer security is transformed single computer problem into all computers problem on the Internet. Computers are attacked by novel viruses spreading over the Internet maliciously. To overcome this problem, many researchers had brought up different kinds of mechanism such as authentication, data encryption, antivirus system, firewall, and intrusion detection system (IDS). However, none of them can resist the Denial of Service (DoS) attack and its transformations effectively. In the thesis, we propose a new high detection rate technique, new response mechanism, an active network based security system - Active Network Security Immune System (ANSIS), and its implementation. ANSIS is a compatible, scalable and practical network framework. It can cope with any type of DoS, including novel worm spreading. Moreover, ANSIS has the same characteristics as creature and its immune system. It not only improves the security of network system substantially, but also reduces the cost of management and maintenance by a wide margin.
Yeh, Hua-I., and 葉華裔. "Network Security Self-Defense System." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/17841998359762356555.
Full textMgabile, Tinny. "Network intrusion detection system using neural networks approach in networked biometrics system." Thesis, 2014. http://hdl.handle.net/10210/10054.
Full textNetwork security has become increasingly important as more and more applica- tions are making their way into the market. The research community has proposed various methods to build a reliable network intrusion detection system to detect unauthorised activities in networked systems. However many network intrusion detection systems that have been reported in literature su er from an excessive number of false positives, false negatives, and are unable to cope with new, elegant and structured attacks. This is mainly because most network intrusion detection systems rely on security experts to analyze the network tra c data and manually construct intrusion detection rules. This study proposes to use a machine learning technique such as neural network approach to anomaly based network intrusion detection system (NIDS). The main objective for this study is to construct an NIDS model that will produce approx- imate to zero false positive or no false positive at all and have high degree of accuracy in detecting network attacks. The neural network (NN) model is trained on a biometric networked system dataset simulated in the study, containing strictly replayed and normal network tra c that encourage the development of the pro- posed NIDS. By analyzing the NN{based NIDS results, the study reached the false positive rate of 0, and high accuracy rate of 100 percent. To support the results obtained in this study, the performance of the NN{based NIDS was compared to two other classi cation methods (k{nearest neighbor algorithm (KNN) and Naive Bayes). The results obtained from KNN and naive Bayes were 99.87 and 99.75 percent respectively. These results show that the proposed model can successfully be used as an e ective tool for solving complicated classi cation problems such as NIDS.
Chang, Po-chieh, and 章博傑. "Distributed Network Security Analysis and Detection system." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/7rtd4y.
Full text銘傳大學
資訊傳播工程學系碩士班
96
Because the using generally of network at present, no matter the government office, incorporated business, school, even personal behavior, with have greatest connection by network, and this because characteristic of network " convenient ", however, the so-called network hacker exactly utilize convenience of the network to disseminate the virus procedure or the back door procedure to wait for an opportunity to carry on some hostile behaviors everywhere now, so how to prevent these hacker of network behavior, raise security of network is more and more important. How security of raising the network system is a subject paid attention to now. There are a lot of about protecting the software of the network security system too on the market at present, or by way of joining the webpage, help users to analyse that detect and examine the security of system, with these relevant software, the security efficiency that can become certain, however, present network hacker''s attacks are diversified gradually, dispersing type, so traditional shelter of form software already gradually unable various attack produce and react more and more to now. The present network attacks the way to adopt the dispersing type gradually, in view of this, originally research and propose and design the network security system by way of analysis of the dispersing type, through information collection of content of person who disperse, from with systematic daily record of systematic daily record and different kind of kind, analyse the unusual behavior or the attack, and then related with it, cross than the way to inquiring about, reach the analysis of the dispersing type homogeneity daily record and dispersing type heterogeneous daily record, and then improve the efficiency of the network security system, offer the way in which the general user uploads the daily record with the webpage, the persons who help to upload the daily record offer the dispersing type to analyse the report form, reach the function shared.
Sherwood, Michael E. "System and network security : the potential of intrusion detection systems /." 2004. http://emp3.hbg.psu.edu/theses/available/etd-05072004-124842/.
Full text