title: vrfinder: Finding outbound addresses in traceroute

authors: Marder, Alexander

abstract: Current methods to analyze the Internet's router-level topology with paths collected using traceroute assume that the source address for each router in the path is either an inbound or off-path address on each router. In this work, we show that outbound addresses are common in our Internet-wide traceroute dataset collected by CAIDA's Ark vantage points in January 2020, accounting for 1.7% - 5.8% of the addresses seen at some point before the end of a traceroute. This phenomenon can lead to mistakes in Internet topology analysis, such as inferring router ownership and identifying interdomain links. We hypothesize that the primary contributor to outbound addresses is Layer 3 Virtual Private Networks (L3VPNs), and propose vrfinder, a technique for identifying L3VPN outbound addresses in traceroute collections. We validate vrfinder against ground truth from two large research and education networks, demonstrating high precision (100.0%) and recall (82.1% - 95.3%). We also show the benefit of accounting for L3VPNs in traceroute analysis through extensions to bdrmapIT, increasing the accuracy of its router ownership inferences for L3VPN outbound addresses from 61.5% - 79.4% to 88.9% - 95.5%.

text: vrfinder: Finding outbound addresses in traceroute Current methods to analyze the Internet's router-level topology with paths collected using traceroute assume that the source address for each router in the path is either an inbound or off-path address on each router. In this work, we show that outbound addresses are common in our Internet-wide traceroute dataset collected by CAIDA's Ark vantage points in January 2020, accounting for 1.7% - 5.8% of the addresses seen at some point before the end of a traceroute. This phenomenon can lead to mistakes in Internet topology analysis, such as inferring router ownership and identifying interdomain links. We hypothesize that the primary contributor to outbound addresses is Layer 3 Virtual Private Networks (L3VPNs), and propose vrfinder, a technique for identifying L3VPN outbound addresses in traceroute collections. We validate vrfinder against ground truth from two large research and education networks, demonstrating high precision (100.0%) and recall (82.1% - 95.3%). We also show the benefit of accounting for L3VPNs in traceroute analysis through extensions to bdrmapIT, increasing the accuracy of its router ownership inferences for L3VPN outbound addresses from 61.5% - 79.4% to 88.9% - 95.5%.

year: 2020

title: Environmentally smart contracts for artists using NFTs

authors: Weijers, Dan M.

abstract: This presentation discusses the environmentally smart contracts for artists using NFTs

text: Environmentally smart contracts for artists using NFTs This presentation discusses the environmentally smart contracts for artists using NFTs

year: 2021

title: Donna Awatere on Whiteness in New Zealand: Theoretical Contributions and Contemporary Relevance

authors: Norris, Adele N.

abstract: In June 2022, Prime Minister Jacinda Ardern designated the US-based neofascist groups The Base and the Proud Boys as terrorist organisations. This designation marks one of the few times white supremacy entered the national political discourse in New Zealand. Discourses of whiteness are mostly theorised in the North American context. However, Donna Awatere’s 1984 examination of White Cultural Imperialism (WCI) in her book Māori Sovereignty advanced an analysis of whiteness in New Zealand that has received limited scholarly attention and is essentially unexplored. This paper reintroduces Awatere’s conceptualisation of WCI. It offers core tenets of WCI and theoretical insights into contemporary discussions of white supremacy that move beyond the focus of individuals and groups to a broader national framework of New Zealand. Two interrelated features of WCI, as defined by Awatere, are the minimisation and normalisation of whiteness and white racial hostility –  inherent features that maintain, protect, and reproduce the white institutionalised body as the primary beneficiary of Western European domination that will always thwart Indigenous sovereignty and equality. This paper concludes that Awatere’s articulation of WCI links whiteness in the New Zealand context to the broader network of global white supremacy that offers insight into contemporary criminal justice scholarship.

text: Donna Awatere on Whiteness in New Zealand: Theoretical Contributions and Contemporary Relevance In June 2022, Prime Minister Jacinda Ardern designated the US-based neofascist groups The Base and the Proud Boys as terrorist organisations. This designation marks one of the few times white supremacy entered the national political discourse in New Zealand. Discourses of whiteness are mostly theorised in the North American context. However, Donna Awatere’s 1984 examination of White Cultural Imperialism (WCI) in her book Māori Sovereignty advanced an analysis of whiteness in New Zealand that has received limited scholarly attention and is essentially unexplored. This paper reintroduces Awatere’s conceptualisation of WCI. It offers core tenets of WCI and theoretical insights into contemporary discussions of white supremacy that move beyond the focus of individuals and groups to a broader national framework of New Zealand. Two interrelated features of WCI, as defined by Awatere, are the minimisation and normalisation of whiteness and white racial hostility –  inherent features that maintain, protect, and reproduce the white institutionalised body as the primary beneficiary of Western European domination that will always thwart Indigenous sovereignty and equality. This paper concludes that Awatere’s articulation of WCI links whiteness in the New Zealand context to the broader network of global white supremacy that offers insight into contemporary criminal justice scholarship.

year: 2023-07-27