Technology and Innovation

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Mapping Concentrations of Device Vendors in IXPs

Mapping Concentrations of Device Vendors in IXPs

Joao M. Ceron

7 min read

Internet exchange points (IXPs) are among the most popular ways for Internet service providers (ISPs) and content distribution networks (CDNs) to exchange traffic. This article gives an analysis of the distribution of vendors chosen by IXP members to connect to IXPs.

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DNSSEC: The Long and Bumpy Road of Algorithm Deployment

DNSSEC: The Long and Bumpy Road of Algorithm Deployment

Moritz Müller

7 min read

As cryptographic analysis and related technologies advance, the signing algorithms at the heart of DNSSEC have to keep up. Moritz Müller and colleagues take a look at barriers on the road to more secure algorithms and discuss ways to make the journey faster.

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How Centralised is DNS Traffic Becoming?

How Centralised is DNS Traffic Becoming?

Giovane Moura

14 min read

There have been growing concerns over the last few years about the excessive concentration of control over the Internet's markets and infrastructure — what is commonly referred to as Internet centralisation. In this article, Giovane Moura talks about how he and his colleagues have been measuring ce…

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Inferring the Deployment of Inbound Source Address Validation Using DNS Resolvers

Inferring the Deployment of Inbound Source Address Validation Using DNS Resolvers

Yevheniya Nosyk

6 min read

Source Address Validation (SAV) is the best current practice (BCP 38/RFC 2827) aimed at filtering packets based on source IP addresses at the network edge. In this article, we show how to identify networks that do not deploy SAV for incoming traffic.

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Journeying into XDP Part 1: Augmenting DNS

Journeying into XDP Part 1: Augmenting DNS

Tom Carpay

16 min read

In this post, we at NLnet Labs look at how eXpress Data Path (XDP) can augment existing DNS software. We share our experiences of implementing Response Rate Limiting in XDP.

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The Lockdown Effect - Implications of the COVID-19 Pandemic on Internet Traffic

The Lockdown Effect - Implications of the COVID-19 Pandemic on Internet Traffic

Oliver Gasser

10 min read

Oliver Gasser and his colleagues have been investigating the impact of COVID-19 on Internet traffic as seen from a variety of vantage points. Here's an overview of their findings.

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RIPE NCC Internet Country Report: Central Asia

RIPE NCC Internet Country Report: Central Asia

Suzanne Taylor

3 min read

We examine the Internet landscape in five different countries in Central Asia as the next in our series of RIPE NCC Internet Country Reports.

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Overcoming the Limitations of UDP Options

Overcoming the Limitations of UDP Options

Raffaele Zullo

6 min read

A recent extension that aims to add support for transport options to the User Datagram Protocol (UDP) is already showing promise. Unfortunately, its deployment may be undermined by the way existing network devices process UDP length and checksum. In this post we at the Electronics Research Group,…

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Measuring QoE by Measuring TCP Connection Establishment Delay in a Service Provider Network

Measuring QoE by Measuring TCP Connection Establishment Delay in a Service Provider Network

Ali Norouzi

6 min read

I’ve created a traffic analyser to help network engineers detect issues related to quality of experience.

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Limiting the Power of RPKI Authorities

Limiting the Power of RPKI Authorities

Kris Shrishak

5 min read

In the beginning, Internet infrastructure was not originally designed with security in mind. Luckily, this mindset has changed over the years, mainly due to the growing number of attacks, and has prompted the design of security measures such as Domain Name System Security Extensions (DNSSEC) and Re…

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