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1. Modelling computer networks for further security research

Author:
Zsolt Bederna and Tamás Szádeczky
Publication Date:
12-2021
Content Type:
Journal Article
Journal:
Security and Defence Quarterly
Institution:
War Studies University
Abstract:
Computer networks are usually modelled from one aspect, e.g., the physical layer of the network, although this does not allow the researcher to understand all usage of that device. We aim to develop a model which leverages all aspects of a networked computer and, therefore, provides complete information to the scientist for all further security research, especially that related to the social sciences. Network science is about the analysis of any network, from social to protein. It is much easier to analyse computer networks with technical tools than protein networks. It is, therefore, a straightforward way to crawl the web as Albert-Laszlo Barabasi did to model its connections, nodes, and links in graph theory to analyse its internal connections. His analysis was based solely on the network layer. Our methodology uses graph theory and network science and integrates all ISO/OSI (computer networking) layers into the model. Each layer of the ISO/OSI model has its topology separately, but all of them also work as part of the complex system to operate the network. It therefore creates a multipartite graph of the network under analysis. Furthermore, the virtual private networks (VPNs) and application usage are also integrated as nodes and links. With this model, the computer network infrastructure and usage data can be used for further non-computing related research, e.g., social science research, as it includes the usage patterns of the network users.
Topic:
Security, Science and Technology, Networks, and Computer Science
Political Geography:
Global Focus

2. Assessment of the effectiveness of the security features of personal wireless networks

Author:
Janusz Gierszewski and Michał Matuśkiewicz
Publication Date:
12-2020
Content Type:
Journal Article
Journal:
Security and Defence Quarterly
Institution:
War Studies University
Abstract:
Wireless network communication standards have become very common due to the huge benefits of their application. The use of radio waves to create networks has reduced infrastructure costs and increased the mobility of devices. The advantages of wireless communication (WLAN) also pose a challenge to the security of transmitted data. However, the use of a wireless signal poses certain threats to network security. The aim of the study was to analyse problems related to the security of WLAN 802.11. and assess its resistance to various attack strategies. It was assumed that wireless networks have an insufficient level of security. The assumed assumption is verifiable due to the ability to monitor events in networks. In order to verify the hypothesis, a number of experiments have been carried out in laboratory conditions, concerning the currently used WLAN protections from the IEEE 802.11 family of standards. The electromagnetic waves used for communication are available to the public at a distance of a few / several dozen metres from the communicating devices. It is easy to monitor air traffic using a network card that operates in monitor mode. The communication itself cannot be secured in any way, so data encryption is one way of secure transmission. During the research, the applied security features were successfully broken with the help of publicly available tools. The obtained results are distinguished by a high level of objectivity and reliability in the assessment of applied wireless network security. It was shown that there are still imperfections in the security and it is possible to break the security measures. The consequences of attacks are very serious and lead to a breach of each of the attributes of secure information. Practice has shown that it is impossible to create a wireless network that is fully secure. The findings of the study should be used to develop methods to improve information security, as well as to raise users’ awareness of existing threats. Not all users of wireless networks are aware of how easy some of the commonly used security features are to break.
Topic:
Security, Cybersecurity, and Networks
Political Geography:
Global Focus

3. Wargaming the cyber resilience of structurally and technologically different networks

Author:
Heikki Lantto, Bernt Åkesson, Marko Suojanen, Topi Tuukkanen, Simo Huopio, Juha-Pekka Nikkarila, and Mari Ristolainen
Publication Date:
06-2019
Content Type:
Journal Article
Journal:
Security and Defence Quarterly
Institution:
War Studies University
Abstract:
Based on a review of different analytical frameworks, it is suggested to run a table top cyber wargame when trying to analyse the effects of closed national networks being imposed in the near future. The scope of the wargame is to extract results to show how the resilience of an open national network differs from a closed national network. It is self-evident that the formation process of resilience is different between the diverse systems. The proposed wargame is a two-sided cyber table top wargame. The wargame is based on at least two blue teams, at least one red team and a control team (namely a white team). One blue team is located in the closed national networks and its system relies on closed national network infrastructure. The other blue team operates its system within open network society. By designing, constructing and executing the proposed cyber wargame we argue it is possible to find these diff erences and similarities as well. Current research improves cyber situation awareness and proposes a direction to be followed when trying to understand the changing circumstances of the cyber space. It also suggests how the research resources could be directed when trying to improve the situation awareness of the closing process.
Topic:
Defense Policy, Science and Technology, Cybersecurity, Networks, and Resilience
Political Geography:
Russia and Eurasia