Measurements and Statistics

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RIPE IPmap - Geolocating Routes Across the Internet

Alun Davies

Geolocation providers usually focus on locating end user devices at the edge of the Internet. But what about the machines that make up the infrastructure in the middle? In this episode, I talk to Chris Amin about RIPE IPmap - an API developed by the RIPE NCC to geolocate core Internet infrastructur…

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RIPE NCC Internet Country Report: The Nordic Region

Suzanne Taylor

We take a comprehensive look at the five countries and three autonomous regions that make up the Nordic Region as the next in our series of RIPE NCC Internet Country Reports.

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Top 3 Types of IP Address Abuse That Threaten IPv4 Resource Holders

Vincentas Grinius

Since the exhaustion of the IPv4 address pool, companies across the globe heavily rely on IPv4 transfer and lease markets. Unfortunately, transferred IP address blocks are far more likely to be blocklisted due to IP address abuse. But while abuse negatively affects IP address reputation, the risks …

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Log4Shell Through the Scope of a Reactive Network Telescope

Raphael Hiesgen

The omnipresence of software introduces a constant threat of new vulnerabilities that affect widely-deployed implementations. At the end of 2021, the Log4Shell vulnerability (CVE-2021-44228) made headlines. In this article, read more about Log4Shell as seen from a reactive network telescope.

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A Brief History of Network Time

Robert Allen

In this post we will look at how network time works today and the technology that keeps it accurate and secure. Most of the digital tools that society relies on–across sectors such as finance, telecommunication, security and energy–only work with precise and reliable time synchronisation. But what …

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Minimising RIS Live Delays

Oleg Muravskiy

It has been almost 3 years since we promoted RIS Live to a full production service. Its biggest advantage is that it delivers RIS data in real time, with minimal delays from the RIS collectors to our users. We had received a lot of positive feedback about the service, however, we were still wonderi…

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Staying Alive - What Is TTL and Why Is It Important for Your DNS Setup?

Lars-Johan Liman

If you know about DNS, you've probably heard of the Time-to-Live (TTL) field. But mistakes with TTL are more common than you might think. Here we look at the quirks of DNS record sets, parent/child domains and how to avoid TTL problems.

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Production Deployment of TCP Authentication Option

Andrew Gallo

The George Washington University recently deployed Transmission Control Protocol Authentication Option (TCP-AO) after a recent code upgrade on its border routers. This further enhances BGP security features already in place on our network.

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Push the Button: SIDN Lab's DDoS Testbed in Action at CONCORDIA Open Door 2022

Thijs van den Hout

Over the past months, SIDN Labs have been improving the testbed they developed for the DDoS Clearing House. At the CONCORDIA Open Door event (COD2022) this October, they'll demonstrate how the testbed works as part of the CONCORDIA Threat Intelligence Platform. The team look at the latest changes t…

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240/4 As Seen by RIPE Atlas

Qasim Lone

In this article we use data from RIPE Atlas probes to investigate the usage of 240/4, a block of IPv4 addresses 'reserved for future use', formally known as Class E in the wild.

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