An exploratory study of techniques in passive network telescope data analysis
- Authors: Cowie, Bradley
- Date: 2013
- Subjects: Web search engines Internet searching World Wide Web Malware (Computer software) Computer viruses Computer networks -- Monitoring Computer networks -- Security measures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4573 , http://hdl.handle.net/10962/d1002038
- Description: Careful examination of the composition and concentration of malicious traffic in transit on the channels of the Internet provides network administrators with a means of understanding and predicting damaging attacks directed towards their networks. This allows for action to be taken to mitigate the effect that these attacks have on the performance of their networks and the Internet as a whole by readying network defences and providing early warning to Internet users. One approach to malicious traffic monitoring that has garnered some success in recent times, as exhibited by the study of fast spreading Internet worms, involves analysing data obtained from network telescopes. While some research has considered using measures derived from network telescope datasets to study large scale network incidents such as Code-Red, SQLSlammer and Conficker, there is very little documented discussion on the merits and weaknesses of approaches to analyzing network telescope data. This thesis is an introductory study in network telescope analysis and aims to consider the variables associated with the data received by network telescopes and how these variables may be analysed. The core research of this thesis considers both novel and previously explored analysis techniques from the fields of security metrics, baseline analysis, statistical analysis and technical analysis as applied to analysing network telescope datasets. These techniques were evaluated as approaches to recognize unusual behaviour by observing the ability of these techniques to identify notable incidents in network telescope datasets
- Full Text:
- Date Issued: 2013
- Authors: Cowie, Bradley
- Date: 2013
- Subjects: Web search engines Internet searching World Wide Web Malware (Computer software) Computer viruses Computer networks -- Monitoring Computer networks -- Security measures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4573 , http://hdl.handle.net/10962/d1002038
- Description: Careful examination of the composition and concentration of malicious traffic in transit on the channels of the Internet provides network administrators with a means of understanding and predicting damaging attacks directed towards their networks. This allows for action to be taken to mitigate the effect that these attacks have on the performance of their networks and the Internet as a whole by readying network defences and providing early warning to Internet users. One approach to malicious traffic monitoring that has garnered some success in recent times, as exhibited by the study of fast spreading Internet worms, involves analysing data obtained from network telescopes. While some research has considered using measures derived from network telescope datasets to study large scale network incidents such as Code-Red, SQLSlammer and Conficker, there is very little documented discussion on the merits and weaknesses of approaches to analyzing network telescope data. This thesis is an introductory study in network telescope analysis and aims to consider the variables associated with the data received by network telescopes and how these variables may be analysed. The core research of this thesis considers both novel and previously explored analysis techniques from the fields of security metrics, baseline analysis, statistical analysis and technical analysis as applied to analysing network telescope datasets. These techniques were evaluated as approaches to recognize unusual behaviour by observing the ability of these techniques to identify notable incidents in network telescope datasets
- Full Text:
- Date Issued: 2013
Learners' participation in leadership: a case study in a secondary school in Namibia
- Authors: Uushona, Andreas Bishi
- Date: 2013
- Subjects: Educational leadership -- Namibia -- Case studies Student participation in administration -- Namibia -- Case studies School management and organization -- Namibia -- Case studies Student government -- Namibia Education, Secondary -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1395 , http://hdl.handle.net/10962/d1001749
- Description: Learner leadership is a worldwide issue in educational leadership and management. In preindependent Namibia secondary schools had the prefect system and the SRCs as learner leadership bodies which had little influence on schools’ decisions because they lacked credibility. In 2001 the Learners’ Representative Council (LRC) was legitimized as a learner leadership body in secondary schools through the Education Act 16 of 2001. However, recent research suggests that even these bodies are not functioning effectively for a variety of reasons. This prompted me to undertake research to develop an understanding of learners’ participation in leadership in a senior secondary school in Namibia. I used a qualitative case study, in an interpretive paradigm, in an attempt to achieve my research goal. The following questions guided the study: How is leadership understood by members of the organization? How learner leadership is understood? How are learners involved in leadership in the school? What potential exists for increased learners’ participation? What factors inhibit learners’ participation in leadership in the school? A population comprising of the school board chairperson, the principal, three heads of department, the superintendent, three teachers and five learners was composed from a senior secondary school in Namibia. Data were collected through focus groups, interviews, document analysis and observation and analyzed thematically for reflective discussion. The findings revealed that the LRC is functioning but providing little opportunity for learner leadership development. The most significant challenge relates to traditional and outdated views of leadership on the parts of teachers and education managers. Hence, in addition to a number of practical recommendations, the study recommends a change of mindset towards children so that opportunities are provided to contribute to their growth and development.
- Full Text:
- Date Issued: 2013
- Authors: Uushona, Andreas Bishi
- Date: 2013
- Subjects: Educational leadership -- Namibia -- Case studies Student participation in administration -- Namibia -- Case studies School management and organization -- Namibia -- Case studies Student government -- Namibia Education, Secondary -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1395 , http://hdl.handle.net/10962/d1001749
- Description: Learner leadership is a worldwide issue in educational leadership and management. In preindependent Namibia secondary schools had the prefect system and the SRCs as learner leadership bodies which had little influence on schools’ decisions because they lacked credibility. In 2001 the Learners’ Representative Council (LRC) was legitimized as a learner leadership body in secondary schools through the Education Act 16 of 2001. However, recent research suggests that even these bodies are not functioning effectively for a variety of reasons. This prompted me to undertake research to develop an understanding of learners’ participation in leadership in a senior secondary school in Namibia. I used a qualitative case study, in an interpretive paradigm, in an attempt to achieve my research goal. The following questions guided the study: How is leadership understood by members of the organization? How learner leadership is understood? How are learners involved in leadership in the school? What potential exists for increased learners’ participation? What factors inhibit learners’ participation in leadership in the school? A population comprising of the school board chairperson, the principal, three heads of department, the superintendent, three teachers and five learners was composed from a senior secondary school in Namibia. Data were collected through focus groups, interviews, document analysis and observation and analyzed thematically for reflective discussion. The findings revealed that the LRC is functioning but providing little opportunity for learner leadership development. The most significant challenge relates to traditional and outdated views of leadership on the parts of teachers and education managers. Hence, in addition to a number of practical recommendations, the study recommends a change of mindset towards children so that opportunities are provided to contribute to their growth and development.
- Full Text:
- Date Issued: 2013
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