Network Operations

Network Anomaly Detection – Survey Evaluation

Jan Rejchrt

• 3 Mar 2014

• 5 min read

We wanted to find out what network security experts think about network anomalies. We created a short web survey in order to map opinions of network professionals. In this article we describe the results.

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RPKI Routing Policy Decision-Making - a SURFnet Perspective

Jac Kloots

• 28 Jan 2014

• 11 min read

Before we decide to implement a stricter operational practices, we needed to find out how many routes with invalid origins are actually being used and how much traffic is exchanged using those routes. Please find the results below.

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NTP Reflections

Mirjam Kühne

• 22 Jan 2014

• 13 min read

After the recent amplification attacks involving NTP servers, John Kristoff, a researcher with Team Cymru, kindly agreed to publish an analysis of the history and timeline leading up to the attacks. Please find his contribution below.

security

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The Many Instances of the L-root Name Server

Stéphane Bortzmeyer

• 20 Jan 2014

• 7 min read

The techniques used by the L-root DNS server are documented in RFC 7108 "A Summary of Various Mechanisms Deployed at L-Root for the Identification of Anycast Nodes". These techniques can be used by the RIPE Atlas probes to find the instance of L-root they are talking to.

0

3

How Many RIPE Atlas Probes Can Resolve IPv6-only Domain Names?

Stéphane Bortzmeyer

• 13 Jan 2014

• 6 min read

Each RIPE Atlas probe has at least one DNS resolver, indicated by a DHCP reply on the local network of the probe. Irrespective of the IP address of the resolver, this server may have IPv4 and IPv6 connectivity or only IPv4 connectivity. What is the percentage among RIPE Atlas probes?

dns
ipv6
tools
atlas
+2
+1

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4

Infrastructure Geolocation - Plan of Action

Emile Aben

• 19 Dec 2013

• 7 min read

At RIPE 67 we presented our ideas on infrastructure geolocation. We received positive feedback for developing this idea. This article shows the current thinking on how to develop router geolocation further. Any feedback will be appreciated.

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3

Are We Ready to Switch Off IPv4?

Marco Hogewoning

• 13 Dec 2013

• 5 min read

At the RIPE 67 meeting in Athens, Greece, the RIPE IPv6 Working Group ran a little experiment to test the feasibility of an IPv6-only network and to identify challenges in user experience. While the results were highly encouraging, they indicated that there is still work to be done before IPv4 can …

ipv6

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Network Anomaly Detection – Do We Know What to Detect?

Jan Rejchrt

• 20 Nov 2013

• 3 min read

Network anomalies are not understood the same way among the network experts. However, establishing a unified view is important for the development of anomaly detection tools. The survey described below will help to develop such a unified view.

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14th Saudi Arabian IPv6 Task Force Meeting

Marco Hogewoning

• 14 Nov 2013

• 4 min read

The RIPE NCC recently participated in a meeting of the Saudi Arabian Task Force. A well-attended event, it included presentations and discussions about IPv6 deployment strategies, as well as presentations by operators reporting back on their successful IPv6 pilot projects and plans to roll out IPv6…