Based in Amsterdam, The Netherlands
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I wrote the articles collected here during my time as community builder of the RIPE NCC and the maintainer and editor of RIPE Labs. I have since taken on a new role serving as the Chair of the RIPE Community. You can reach my new profile via the website link below.
• 2 min read
It is now easier to embed a RIPEstat widget into your RIPE Labs articles. You can use RIPEstat widgets to show visualisations about IP address space, Autonomous System Numbers (ASNs), and related information for hostnames and countries.
• 3 min read
We made some adjustments to the RIPE Labs front page so that you can find RIPE NCC operational statistics more easily. At the same time we also improved the look for mobile usage.
• 6 min read
This is the final post in a series on Network Address Translation (NAT), provided by Mark Smith. In this post, Mark discusses the fundamental constraints of NAT and addresses some FAQs about IPv6 without NAT.
• 12 min read
This is the second post in a series on NATs contributed by Mark Smith, based on a presentation given at AusNOG 2016. In the first post, Mark discussed Network Critical Success Factors (NCSFs). In this post, he is going into details about the trouble with Network Address Translation (NAT).
• 7 min read
This is a guest post by Mark Smith, based on a presentation he gave at the AusNOG 2016 conference on this topic. This is the first post of three, and in this article Mark will discuss the concept of Network Critical Success Factors (NCSFs) before getting into ‘the trouble’.
• 7 min read
Please read this guest post by Tony Scheid about fighting Distributed Denial of Service (DDoS) attacks during the Olympics in Rio de Janeiro.
• 2 min read
Browse through a collection of presentations, tutorials and videos about RIPE Atlas, from both RIPE NCC staff as well as members of the Internet community who use RIPE Atlas.
• 10 min read
Hear from RIPE Atlas users about their experiences with RIPE Atlas and how they use RIPE Atlas data to troubleshoot and gain valuable information about their own networks.
• 8 min read
RIPE NCC developers and researchers present their own findings about a range of topics using RIPE Atlas data, from the effect of hurricanes on the Internet to examining IPv6 /48 filtering.
• 6 min read
What it took to send the RIPE NCC's staff home while remaining fully operational.
• 48 min read
The 14th annual meeting of the Internet Governance Forum (IGF) will be running from 25-29 November 2019 in Berlin. Our staff at the event will be sharing key moments and takeaways from the sessions they attend. Check this page each day for the latest issues, arguments and ideas as they arise at the…
• 10 min read
The tenth RIPE NCC hackathon took on the Internet of Things (IoT). Over two days, community members experimented with possible IoT solutions.
Showing 3 article(s)
“Hi Mirjam, have you got any updates by now?”
Hi John, we have published a couple of updates in the meantime. Please see: https://labs.ripe.net/Members/emileaben/has-the-routability-of-longer-than-24-prefixes-changed and https://labs.ripe.net/Members/stephen_strowes/bgp-even-more-specifics-in-2017
“I believe the caption for fig 2 should actually read "Figure 2: Amsterdam power outage on 17 January 2017", not 2014.”
Hi Alison, thanks for pointing this out. You are right. We corrected it in the article.
“I wish to use the dataset of NLANR for my thesis, about analyzing the flow pattern. Would you email me the download link address at hnldtlw@126.com Thank you so much.”
Dear Longwei Tian, Many thanks for your interest in the dataset. Please see the description above. Under Data Users, it is explained how you can access the data. You need to create a RIPE NCC Access account and accept the Terms and Conditions. Please let us know if you have any problems.
“Hiya, great write up...! Feel free to delete this comment once read, but just wondering if you'd consider linking the word "iNOG" in the blogpost to https://inog.net so people can potentially find us to get involved in either day to day, events, or a prospective hackathon as mentioned :) Thanks a mil, Donal @inognet https://inog.net”
Of course. Good idea. Thanks, Donal.
“Hi, my probe #19242 is disconnected to day, after "usb stick dancing" still say disconnected, in SOS messages are this message: BADMD-APP-4780-d41d8cd98f00b204e9800998ecf8427e What's wrong? Thank you David”
Dear David, we will create a support ticket for you and will get back to you by email.
“You're right the right text should be: Let’s suppose a customer provisioned in the first stage with the prefix 2001:db8:1111::/48. Their devices are using, for our example, the first free /64 (2001:db8:1111:1::/64). Everything is fine until there is a power outage. The CPE boots up again when power is recovered, and because the ISP is using a non-persistent prefix, a new prefix is assigned (2001:db8:2222::/48), so now the CPE is announcing 2001:db8:2222:1::/64. However, the devices that have battery (laptops, tablets, smartphones) still have the previous prefix, so now they have two different prefixes (2001:db8:1111:1::/64 and 2001:db8:2222:1::/64). These devices will try to keep using the older one, and they will not work, as the ISP is no longer routing the first prefix to that customer. Just think: if another network failure or power outage were to happen now. Devices could then have three or even more prefixes. And the user will end up calling the ISP help-desk for troubleshooting because the network is not working. Regarding privacy, at the end the best way someone willing to track you has is apps fingerprinting and correlating data, not just addresses. Because the "tracker" can not be sure that it is the same "person" even if the address is the same, it may be several users in the same computer, it may be different computers using the same address at different times, etc.”
This has been replaced in the original text in order to avoid confusion.
“Have to love those early days. RIPE and the RIPE NCC have made a very significant impact on what now seems so normal and common... Wish all of you (us?) a happy 25th birthday!”
Hi Marten, nice to hear from you. Wish you would be here with us to celebrate!
“Hello, Thanks for this informative article. One question: Why does the route6 object explanation contains a v4 example (in the screenshot)? Best regards.”
Hi Raymond, Very good point. We included a different example now. And sorry for the delay - this totally slipped my mind.
“Was using wget --user=****** --password=****** https://data-store.ripe.net/datasets/iplane-traceroutes/2016/traces_2016_08_15.tar.gz downloads ~58kb tar file whereas the file is 836M. Am I doing something wrong?”
Dear Sagnik, it is not possible to use wget with username and password. You need to log in to RIPE NCC Access which will set a cookie, then save the cookie in a file and tell wget to use it. I hope this helpw.
Someone posted a comment here yesterday asking: "Do you have a list of worthwhile testers who might put my surplus credits to good use?" Unfortunately I accidentally deleted this comment so I am re-posting it.
Showing 44 comment(s)