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In this paper, we implement and evaluate a system that predicts and tracks Internet path changes to maintain an up-to-date network topology. Based on empirical observations, we claim that monitors can enhance probing according to the likelihood of path changes. We design a simple predictor of path changes and show that it can be used to enhance probe targeting. Our path tracking syst...

An increasing number of countries are passing laws that facilitate the mass surveillance of Internet traffic. In response, governments and citizens are increasingly paying attention to the countries that their Internet traffic traverses. In some cases, countries are taking extreme steps, such as building new Internet Exchange Points (IXPs), which allow networks to interconnect direct...

The Internet routing protocol BGP expresses topological reachability and policy-based decisions simultaneously in path vectors. A complete view on the Internet backbone routing is given by the collection of all valid routes, which is infeasible to obtain due to information hiding of BGP, the lack of omnipresent collection points, and data complexity. Commonly, graph-based data models...

Several researchers during the last decade have encountered the problem of how to infer business relationships between Autonomous Systems (ASes) of the Internet. Since the Internet has a decentralized structure and public data sources containing inter-domain routing information have not been created for topology inference, there are no accurate and comprehensive maps of the Internet...

October 26, 2015

Commercial relationships between Autonomous Systems (ASes) regulate the inter-domain routing dynamics. Identifying these relationships and properly interpreting them can help understand inter-domain routing dynamics and explore routing anomalies where ASes are not following standard transit policies. Most studies in this domain use Border Gateway Protocol (BGP) data to study inter-do...

September 16, 2015

SYNful Knock implant appears to be much bigger than first reported, researchers say.

The highly clandestine attacks hitting Cisco Systems routers are much more active than previously reported. Infections have hit at least 79 devices in 19 countries, including an ISP in the US that's hosting 25 boxes running the malicious backdoor.

That discovery comes from a team of computer scientists...

The complexity and enormous costs of installing new long-haul fiber-optic infrastructure has led to a significant amount of infrastructure sharing in previously installed conduits. In this paper, we study the characteristics and implications of infrastructure sharing by analyzing the long-haul fiber-optic network in the US. We start by using fiber maps provided by tier-1 ISPs and maj...

In this paper, we propose the BGP Visibility Toolkit, a system for detecting and analyzing anomalous behavior in the Internet. We show that interdomain prefix visibility can be used to single out cases of erroneous demeanors resulting from misconfiguration or bogus routing policies. The implementation of routing policies with BGP is a complicated process, involving fine-tuning operat...

In this paper, we propose the BGP Visibility Toolkit, a system for detecting and analyzing anomalous behavior in the Internet. We show that interdomain prefix visibility can be used to single out cases of erroneous demeanors resulting from misconfiguration or bogus routing policies. The implementation of routing policies with BGP is a complicated process, involving fine-tuning operat...

This paper presents the design and data-driven overhead analysis of PrefiSec, a distributed framework that helps collaborating organizations to effectively maintain and share network information in the fight against miscreants. PrefiSec is a novel distributed IP-prefix-based solution, which maintains information about the activities associated with IP prefixes (blocks of IP addresses...

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