S. Feld, N. Pohlmann, M. Sparenberg, B. Wichmann:, „Analyzing G-20´Key Autonomous Systems and their Intermeshing using AS-Analyzer”. In Proceedings of the ISSE 2012 – Securing Electronic Business Processes – Highlights of the Information Security Solutions Europe 2012 Conference, Eds.: N. Pohlmann, H. Reimer, W. Schneider; Springer-Vieweg Verlag, Wiesbaden 2012 Several thousands of interconnected autonomous systems form the Internet, which is regarded as the most powerful communication infrastructure today. Measuring the network and monitoring its vital parameters is crucial for securing continuous availability and steady performance of the Internet. This paper introduces AS-Analyzer, a tool for gathering and analyzing data related to autonomous systems and their interconnection. Using AS-Analyzer’s modules for collecting data from different sources, calculating key figures and creating reports, we present a vivid example by analyzing the G-20’s key autonomous systems and their intermeshing. A brief discussion of key figures related to autonomous system, IPv4 addresses, connections, categories and malware will complete the presentation. Several thousands of interconnected autonomous systems form the Internet, which is regarded as the most powerful communication infrastructure today. Measuring the network and monitoring its vital parameters is crucial for securing continuous availability and steady performance of the Internet. This paper introduces AS-Analyzer, a tool for gathering and analyzing data related to autonomous systems and their interconnection. Using AS-Analyzer’s modules for collecting data from different sources, calculating key figures and creating reports, we present a vivid example by analyzing the G-20’s key autonomous systems and their intermeshing. A brief discussion of key figures related to autonomous system, IPv4 addresses, connections, categories and malware will complete the presentation. Given the fact that the Internet today is among the most critical parts of the global communication infrastructure [COMM09], the need arises to constantly monitor its vital conditions, measured by technical parameters regarding availability, performance, utilization and security. By analyzing and tracking these parameters using performance figure systems, we aim to provide data that improves the situational awareness of the net. The Institute for Internet Security, a research facility of Westfälische Hochschule, Gelsenkirchen, develops and operates the Internet Key Figure System (IKS), a comprehensive database and tool set for internet-related information. Based on these key figures, the current state regarding security, performance and availability of the global network is constantly monitored and compared against historical average values to detect anomalies, short-term trends and long-term evolutions. This information is intended to be used by public and private stakeholders to identify potential risks, make necessary decisions in time and to check the effectiveness of actions taken.
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