September 2017 - ripe-atlas - mailman.ripe.net

Error: Only anchors may be targeted.
by Mozafary Mohammad 28 Jun '18

28 Jun '18

Hello I've got "Only anchors may be targeted." on HTTP measurement creation.Any body can advise what the problem is? Thanks

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New on RIPE Labs: Announcing Daily RIPE Atlas Data Archives
by Mirjam Kuehne 02 Mar '18

02 Mar '18

Dear colleagues, In this article we present a new way to access the dataset on the RIPE Atlas platform. Instead of fetching individual results from measurements using the available APIs, you can now download files containing public measurements for a given day. Please find more details on RIPE Labs: https://labs.ripe.net/Members/petros_gigis/announcing-daily-ripe-atlas-data… Kind regards, Mirjam Kühne RIPE NCC

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Plan to Implement RIPE Atlas WiFi Measurements
by Robert Kisteleki 09 Oct '17

09 Oct '17

Dear colleagues, We wanted to update the community and let you know that we plan to start work on the proposed experiment with WiFi measurements in mid-2016. As we communicated in a recent RIPE Labs article, we will work with GÉANT as a test partner to learn more about the operational effects of introducing WiFi measurements to the RIPE Atlas system, in addition to the benefits we believe this could provide for the entire RIPE Atlas community. Please see the article for more details if you are interested: https://labs.ripe.net/Members/suzanne_taylor_muzzin/ripe-atlas-wifi-measure… We will continue to update you once we’ve begun work on this plan, and we welcome your comments in the meantime. Regards, Robert Kisteleki RIPE NCC

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List of Atlas probes subjected to DNS traffic interception (MITM)
by Baptiste Jonglez 29 Sep '17

29 Sep '17

Hi, I am looking for a list of Atlas probes that suffer from DNS traffic interception, to exclude them from my measurements. What I mean by "traffic interception" is that DNS queries from the probe to a third-party DNS server do not reach the server, but are intercepted and answered by a middle-box instead. I started building this list myself, but it's a long and potentially error-prone process. It seems that the "DNS Root Instances" map could be used for that purpose, because DNS traffic interception shows up as if the probe was contacting an "Unknown" root instance. To get the list of probes, I ended up using an URL like the following, showing probes for all possible "unknown" root instance hostnames: https://atlas.ripe.net/results/maps/root-instances/?server=1&question=10300… ... However, there seems to be a limit on the size of the URL so I cannot get all probes, and they are just displayed on the map without any obvious way to get the raw list of probes instead. Is there a way to get the raw list of probes from this map? Or has anybody already done this classification work independently? I also looked for DNS-related tags on probes, but could not find anything useful. Thanks, Baptiste

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New on RIPE Labs: Celebrating 10, 000 Active RIPE Atlas Probes
by Mirjam Kuehne 29 Sep '17

29 Sep '17

Dear colleagues, In August 2017, just short of seven years after RIPE Atlas was launched, the number of connected RIPE Atlas probes hit 10,000. Thank you all for making this happen! Find some more details and an overview of recent developments on RIPE Labs: https://labs.ripe.net/Members/alun_davies/celebrating-10000-active-ripe-atl… Kind regards, Mirjam Kuhne RIPE NCC

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New RIPE Labs article on RIPE Atlas v3 Anchors
by Alun Davies 29 Sep '17

29 Sep '17

Dear colleagues, In this RIPE Labs article the RIPE NCC looks into hardware specifications and logistics for the next generation of RIPE Atlas anchors: https://labs.ripe.net/Members/alun_davies/introducing-ripe-atlas-v3-anchors Best regards, Alun Davies RIPE NCC

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New on RIPE Labs: Measuring your Web Server Reachability with TCP Ping
by Mirjam Kuehne 27 Sep '17

27 Sep '17

Dear colleagues, HTTP measurements from RIPE Atlas probes are only possible towards RIPE Atlas anchors. However, when it comes to measuring the connectivity and latency of web servers on the network level, an alternative exists, which we call TCP Ping: a traceroute with special options that mimic the TCP handshake that takes place when an HTTP connection is established. In this RIPE Labs article we compare the results of large scale HTTP and TCP Ping measurements: https://labs.ripe.net/Members/wilhelm/measuring-your-web-server-reachabilit… Kind regards, Mirjam Kuhne RIPE NCC

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New on RIPE Labs: PoE-ing a RIPE Atlas Probe
by Mirjam Kuehne 18 Sep '17

18 Sep '17

Dear colleagues, In this new RIPE Labs article Geert Jan de Groot explains how to "PoE" a RIPE Atlas Probe: https://labs.ripe.net/Members/geert_jan_de_groot/poe-ing-the-ripe-atlas-pro… Kind regards, Mirjam Kuhne RIPE NCC

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RIPE Atlas v3 Anchor Hardware
by Alun Davies 12 Sep '17

12 Sep '17

Dear all, The RIPE NCC has chosen a new model for the RIPE Atlas v3 Anchors. The hardware we finally opted for is the PC Engines APU2. As well as being cheaper than the previous generation of anchors, this model meets the majority of requirements we laid out for the next generation of anchors. To be clear, given that there are still a couple of minor logistical details to resolve, we are still keeping applications on hold for the time being. That said, we look set to meet our September deadline to resume shipping of RIPE Atlas anchors. For more information and future updates, please read our article on RIPE Labs: https://labs.ripe.net/Members/alun_davies/the-next-generation-of-ripe-atlas… <https://labs.ripe.net/Members/alun_davies/the-next-generation-of-ripe-atlas…> Kind regards, Alun Davies Comms RIPE NCC

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Can Atlas probe handle Truncated response ?
by Davey Song(宋林健) 12 Sep '17

12 Sep '17

Hi folks, I once setup a measurement of DNS UDP to see if the number of timeout increase due to large response. The answer is yes. But I wonder if the timeout is no answer after three times of retries or also includes TCP fallback. Is it true that the probe in DNS UDP measurement will not use TCP to retry even after it receives a truncated response. Best regards, Davey

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