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Clusters in the Expanse: Understanding and Unbiasing IPv6 Hitlists

Clusters in the Expanse: Understanding and Unbiasing IPv6 Hitlists

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Oliver Gasser

7 min read

Network measurements are an important tool in understanding the Internet. Due to the expanse of the IPv6 address space, exhaustive scans in IPv4 are not possible for IPv6. The best practice when conducting IPv6 measurements is to use so called IPv6 hitlists.

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Measuring Anycast DNS Services Using RIPE Atlas

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Kenneth Finnegan

12 min read

A step-by-step guide to how to use the RIPE Atlas measurements infrastructure to characterize the world-wide performance of Anycast DNS services.

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Measuring the KSK Roll

Measuring the KSK Roll

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Geoff Huston

23 min read

When viewed as a network infrastructure, looks can be very deceiving when looking at the DNS. It appears to be a simple collection of resolvers and servers. Clients pass their DNS name resolution queries to resolvers, who then identify and ask an appropriate authoritative name server to resolve …

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Upstream Visibility: Monitor the Visibility of your Prefix

Upstream Visibility: Monitor the Visibility of your Prefix

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Massimo Candela

6 min read

Upstream Visibility is the new tool produced by the Computer Network Research Group of Roma Tre in collaboration with the RIPE NCC. It is a web application which proposes a concise way of visualising interdomain routing data of a specified prefix.

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Persistent DNS Connections for Reliability and Performance

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Baptiste Jonglez

10 min read

For decades, the Domain Name System (DNS) has relied on UDP as its transport protocol of choice, mostly because of its simplicity. New transports such as DNS-over-TLS and DNS-over-HTTPS are now gaining popularity: they offer increased privacy while preventing the use of the DNS as a DDoS attack vec…

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Researchers' first Encounter with the IETF Community: Measuring TCP, HTTP/2 and QUIC

Researchers' first Encounter with the IETF Community: Measuring TCP, HTTP/2 and QUIC

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Torsten Zimmermann

6 min read

As Ph.D. students, our typical encounter with the IETF community and their work is by stumbling over RFCs and Internet-Drafts that either relate to or are a fundamental basis for our research. Beyond that, for us, the Internet Engineering Task Force (IETF) has been a vague entity focused on standar…

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Let's Connect! Easy to Install and Secure VPN Software that Respects your Privacy

Let's Connect! Easy to Install and Secure VPN Software that Respects your Privacy

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Rogier Spoor

3 min read

Going online on unknown Internet hotspots - whether at a restaurant, an airport or in a restaurant - isn't actually very safe or secure for users. This is due to the open character of hotspots which makes it easy to impersonate legitimate hotspots and eavesdrop on traffic - or even serve malware. T…

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Passive Observations of Large DNS Service

Passive Observations of Large DNS Service

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Wouter de Vries

5 min read

In 2009, Google launched its Public DNS service, with its characteristic IP address 8.8.8.8. Since then, this service has grown to be the largest and most well-known DNS service in existence. Due to the centralisation that is caused by public DNS services, large content delivery networks (CDNs), su…

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The Uncertainty of Measuring the DNS

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Geoff Huston

22 min read

The period around the end of the nineteenth century and the start of the twentieth century saw a number of phenomenal advances in the physical sciences.

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Comparing Virtual and Metal RIPE Atlas Anchors

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Stephen Strowes

10 min read

Our VM pilot allows us an opportunity to run a like-for-like comparison between two RIPE Atlas anchors. We're grateful for the support from DigitalOcean, who are running two machines (one metal, one virtual) from the same geographical location.

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