Learn More
Research on performance, robustness, and evolution of the global Internet is fundamentally handicapped without accurate and thorough knowledge of the nature and structure of the contractual relationships between Autonomous Systems (ASs). In this work we introduce novel heuristics for inferring AS relationships. Our heuristics improve upon previous works in(More)
We are designing, implementing, deploying, and operating a secure measurement platform capable of performing various types of Internet infrastructure measurements and assessments. We integrate state-of-the-art measurement and analysis capabilities to try to build a coherent view of Internet topology. In September 2007 we began to use this novel architecture(More)
IP source address forgery, or "spoofing," is a long-recognized consequence of the Internet's lack of packet-level authenticity. Despite historical precedent and filtering and tracing efforts, attackers continue to utilize spoofing for anonymity, indirection, and amplification. Using a distributed infrastructure and approximately 12,000 active measurement(More)
Researchers investigating topics such as performance, stability, and growth of the Internet often turn to BGP routing tables to obtain Internet topology. BGP routing tables provide a mapping from address prefixes to autonomous system (AS) paths. Our study, based on hundreds of thousands of traceroutes from three locations worldwide, categorizes differences(More)
The need to service populations of high diversity in the face of high disparity affects all aspects of network operation: planning, routing , engineering, security, and accounting. We analyze diversity/disparity from the perspective of selecting a boundary between mice and elephants in IP traffic aggregated by route, e.g., destination AS. Our goal is to(More)
In this paper, we present a new router-level Internet mapping tool called MERLIN. MERLIN takes advantage of mrinfo, a multicast management tool that collects all IPv4 multicast enabled interfaces of a router and all its multicast links towards its neighbors. Our new probing tool fixes mrinfo technical limitations and eases the deployment of multicast(More)
Several traceroute probe methods exist, each designed to perform better in a scenario where another fails. This paper examines the effects that the choice of probe method has on the inferred forward IP path by comparing the paths inferred with UDP, ICMP, and TCP-based traceroute methods to (1) a list of routable IP addresses, (2) a list of known routers,(More)
A critical step in creating accurate Internet topology maps from traceroute data is mapping IP addresses to routers, a process known as alias resolution. Recent work in alias resolution inferred aliases based on similarities in IP ID time series produced by different IP addresses. We design, implement, and experiment with a new tool that builds on these(More)
In this paper we present results of a series of bandwidth estimation experiments conducted on a high-speed testbed at the San Diego Supercomputer Center and on OC-48 and GigE paths in real world networks. We test and compare publicly available bandwidth estimation tools: abing, pathchirp, pathload, and Spruce. We also tested Iperf which measures achievable(More)
—A critical step in creating accurate Internet topology maps from traceroute data is mapping IP addresses to routers, a process known as alias resolution. Recent work in alias resolution inferred aliases based on similarities in IP ID time series produced by different IP addresses. We design, implement, and experiment with a new tool that builds on these(More)