- mat-wg - mailman.ripe.net

RIPE Atlas testing of reserved IPv4 addresses
by Seth David Schoen 26 Jan '21

26 Jan '21

Hi mat-wg, I'm Seth, formerly a staff technologist at EFF and one of the co-developers of Let's Encrypt and Certbot. Recently, I've been working with John Gilmore on the IPv4 Unicast Extensions Project, which aims to make some of the IPv4 address blocks that were reserved in the 1980s and 1990s (and that continue to be unused, or nearly so) available for addressing and routing on the Internet. This project involves many different kinds of work, including writing software patches to make various OSes and devices willing to generate and accept packets to reserved addresses, writing Internet-Drafts to describe addressing policy changes with IETF, testing devices to see how they actually treat such packets, talking to various constituencies about these proposals, and working with the Internet measurement community to understand how the Internet as a whole treats packets to or from currently-reserved address ranges, and how that treatment evolves over time. Two prominent examples that are already supported by Linux hosts are the netblocks 0/8 ("this network") and 240/4 ("experimental"/"future use"). According to Internet standards created in the 1980s and still in effect, these address ranges cannot be allocated and should not be assigned to hosts or used on the public Internet. However, several key implementations started allowing 240/4 addresses about 11 years ago during an earlier IETF attempt to open up that netblock, including Linux, Android, macOS, iOS, and Solaris. In 2019, Linux kernel version 5.3 allowed ordinary unicast use of 0/8. Today, there are rumors that various organizations are currently using such reserved addresses as unofficial RFC 1918-like private address space, without formal policy coordination with anyone. (There is even some public documentation from Google suggesting making private use of 240/4.) I participated in the Atlas probe deployathon in November and successfully got a probe up and running. I have also been talking to a few RIPE people about our interests and managed to confirm that (regardless of their underlying OS or network treatment) the Atlas software probes will reject probing any reserved address space, while the backend infrastructure will refuse to ask probes to connect to it. So, I'm here to introduce our project and ask the community's view about removing these restrictions so that such addresses can actually be probed and measured. We understand and hope that the majority of such tests would currently result in errors. Even the errors themselves could be interesting: for example, we would like to know how often routing to reserved address ranges fails on a probe host, versus on the probe host's first-hop router, versus inside of ISP infrastructure. We would also like to see how this changes over time as a result of OS software changes that roll out into the field. We would also like to see whether we can detect unofficial use of particular reserved address ranges as private address space. Our medium-term goal is to advertise global routes to portions of these reserved address spaces, and use the probes to assess how well those routes propagate through the Internet, and find where blockages occur. Clearly, we can't do this until both the probe firmware, and the central dispatcher, allow tests to these addresses. Our long-term goal is to have these addresses treated as ordinary unicast addresses by all nodes, including Atlas probes, so the Atlas changes to remove the restrictions would be useful permanent changes.

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Address Assignment Practices in IPv4 and IPv6
by Stephen D. Strowes 21 Jan '21

21 Jan '21

Hi all, We've published a study on the stability of IPv4/IPv6 assignments in domestic ISPs, and the size of the IPv6 prefixes that networks typically assign to subscribers. We look at this from two different angles: what can we measure from RIPE Atlas, and what do operators state in the RIPE Database? In particular, understanding the size of IPv6 delegated prefixes is important for applications such as host reputation & blocklists, geolocation, and research on network measurement. The RIPE Database offers the community a way to share information on their prefix delegations, and deserves some attention! Read more here: https://labs.ripe.net/Members/stephen_strowes/address-assignment-practices-… Cheers, S.

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New on RIPE Labs: Our First Glance at the Uganda Internet Shutdown
by Alun Davies 14 Jan '21

14 Jan '21

Dear colleagues, We've used RIPE NCC tools and datasets to put together some initial observations on the Internet shutdown currently taking place in Uganda. We hope our tools and visualisations will help support further analysis of the impact of the shutdown: https://labs.ripe.net/Members/becha/our-first-glance-at-the-uganda-internet… Kind regards, Alun Davies RIPE NCC

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New Internet Country Report: Gulf Region
by Suzanne Taylor 15 Dec '20

15 Dec '20

Dear colleagues, We’ve published the latest in our series of country reports, this time looking at the Internet landscape in eight countries in the Gulf region. This is the sixth such country report that the RIPE NCC has produced as part of an ongoing effort to support Internet development throughout our service region by making our data and insights available to both local technical communities and decision makers. The report looks at the state of the Internet in the Gulf region, including its market landscape and regulatory environment, Internet number resources and opportunities for growth, regional connectivity, routing and routing security, and the operators and paths providing international transit into the region. We also reach a number of conclusions about what is needed to further develop the Internet in the Gulf region. You can learn more and download the report from RIPE Labs: https://labs.ripe.net/Members/suzanne_taylor_muzzin/ripe-ncc-internet-count… <https://labs.ripe.net/Members/suzanne_taylor_muzzin/ripe-ncc-internet-count…> Please let us know if you have any feedback on the report or are interested in learning more about RIPE NCC data. And please share it with any of your colleagues who might be interested. Best regards, Suzanne _____________ Suzanne Taylor RIPE NCC

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Today: RIPE Atlas Software Probes Deployathon!
by Vesna Manojlovic 25 Nov '20

25 Nov '20

Dear colleagues, We're looking forward to celebrating 10 years of RIPE Atlas by deploying software probes - and there's still time for *you* to join us! We have 120+ registered participants from more than 20 countries, that will get help from RIPE NCC staff, with mentors from the community that speak your language. There are also several ideas for hackathon projects, by more advanced RIPE Atlas community experts. We will be online all day today with sessions scheduled at regular intervals. You can join in for the presentations that interest you, or spend some time in one of the online platforms only open today: * SpatialChat for social interactions & hacking * Two Zoom rooms, for presentations, Q&As and live demo's * Slack for chat and technical / code sharing -------------------------- Zoom Presentations Schedule -------------------------- Living Room (English): 08:00 UTC, 11:00 UTC, 15:00 UTC Sun Room (Russian): 09:00 UTC Sun Room (Spanish): 14:00 UTC The Closing Session will take place in the Living Room: 16:00 UTC The full schedule and access codes are on RIPE Labs: https://labs.ripe.net/Members/becha/lets-deploy-together-ripe-atlas-softwar… Kind regards, Vesna Manojlovic Community Builder RIPE NCC

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Fwd: Second call for nominations: IRTF ANRP 2021
by Stephen D. Strowes 19 Nov '20

19 Nov '20

Hi, The nomination deadline for the IRTF Applied Networking Research Prize (ANRP) is only a few days away. Details below! Have you seen work recently that would be deserving of funding and focus at an upcoming IETF/IRTF meeting (e.g., recent work you saw at RIPE81 or IMC, or the amazing work your students are doing)? Please consider nominating! Cheers, S. -------- Forwarded Message -------- Subject: Second call for nominations: IRTF ANRP 2021 Date: Mon, 2 Nov 2020 23:35:02 +0000 From: Colin Perkins <csp(a)csperkins.org> To: IETF Mailing List <ietf(a)ietf.org> APPLIED NETWORKING RESEARCH PRIZE (ANRP) 2021 https://irtf.org/anrp/ ******************************************************************* *** Submit nominations for the 2021 award period of the *** *** Applied Networking Research Prize until November 22, 2020 *** *** *** *** (Please share this announcement with your colleagues.) *** ******************************************************************* The Applied Networking Research Prize (ANRP) is awarded to recognise the best recent results in applied networking, interesting new research ideas of potential relevance to the Internet standards community, and upcoming people that are likely to have an impact on Internet standards and technologies, with a particular focus on cases where these people or ideas would not otherwise get much exposure or be able to participate in the discussion. We encourage nominations of researchers with relevant research results, interesting ideas, and new perspectives. The award will offer them the opportunity to present and discuss their work with the engineers, network operators, policy makers, and scientists that participate in the Internet Engineering Task Force (IETF) and its research arm, the Internet Research Task Force (IRTF). Both self- and third-party nominations for this prize are encouraged. The Applied Networking Research Prize (ANRP) consists of: • a cash prize of $1000 (USD) • an invited talk at the IRTF Open Meeting • a travel grant to attend a week-long IETF meeting (airfare, hotel, registration, stipend - COVID-19 permitting) • recognition at the IETF plenary • an invitation to related social activities In addition, prize winners may be offered additional travel grants to attend future IETF and/or IRTF meetings. Such grants are made at the discretion of the award committee, based on community feedback, engagement with the community, and potential future impact. Applied Networking Research Prize awards are made once per calendar year. Each year, several winners will be chosen and invited to present their work at one of the three IETF meetings during the following year. # HOW TO NOMINATE Nominations are for a single author of an original, peer-reviewed, journal, conference or workshop paper that was recently published or accepted for publication. The nominee must be one of the main authors of the nominated paper. Both self-nominations (nominating one’s own paper) and third-party nominations (nominating someone else’s paper) are encouraged. The nominated paper should provide a scientific foundation for possible future engineering work in the IETF, or research and experimentation in the IRTF. It should analyse the behaviour of Internet protocols in operational deployments or realistic testbeds, make an important contribution to the understanding of Internet scalability, performance, reliability, security or capability, or otherwise be of relevance to ongoing or future IETF or IRTF activities. Nominations must briefly describe how the nominated paper relates to these goals. They should describe how involving the nominee in the IETF and IRTF process, and bringing them to an IETF meeting, would help to foster the transition of the results and/or ideas into new IETF engineering work or IRTF experimentation, or otherwise seed new activities that will have an impact on the real-world Internet. The goal of the Applied Networking Research Prize (ANRP) is to foster the transitioning of research results into real-world benefits for the Internet. Therefore, applicants must indicate that they (or the nominee, in case of third-party nominations) are available to attend at least one of the IETF meetings in the following year. In-person attendance is desirable, where possible, but due to the impact of the COVID-19 pandemic remote participation options will be available for ANRP prize winners at all IETF meetings in 2021. Nominations are submitted via https://irtf.org/anrp/ and must include: • the name and email address of the nominee; • a bibliographic reference to the published (or accepted) nominated paper; • a PDF copy of the nominated paper; • a statement that describes how the nominated paper fulfills the goals of the award and how the nominee would engage with the IETF and/or IRTF community; • a statement of the nominees availability to present their work at the IETF meetings in during 2021; • a statement that the nominee accepts that the IRTF Intellectual Property Rights disclosure rules will apply to their award talk at the IRTF open meeting; • a brief biography or CV for the nominee; and • optionally, any other supporting information (link to nominee’s web site, etc.) All nominees will be notified by email about the decision regarding their nomination. Nominations for the Applied Networking Research Prize (ANRP) are not considered to be contributions to the IETF or IRTF. However, the invited talks at the IRTF Open Meeting are considered to be contributions and the IRTF Intellectual Property Rights disclosure rules apply. # IMPORTANT DATES Applications close: November 22, 2020 (hard) Notifications: December 18, 2020 # SPONSORS The Applied Networking Research Prize is supported by the Internet Society in coordination with the Internet Research Task Force (IRTF). Additional corporate sponsorship is kindly provided by Comcast and NBC Universal. If your organisation would like to support the ANRP, please contact anrp(a)irtf.org.

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New on RIPE Labs: Join Us for a RIPE NCC Open House on 10 Years of RIPE Atlas
by Alun Davies 17 Nov '20

17 Nov '20

Dear colleagues, Tomorrow we’ll he holding a RIPE NCC Open House event to celebrate 10 years of RIPE Atlas. Join us for a mix of presentations, diverse use cases from external speakers, and open discussion between the people who are helping expand RIPE Atlas right now. In this new article on RIPE Labs, we tell you what we’ve got lined up and invite you to register: https://labs.ripe.net/Members/alun_davies/join-us-for-a-ripe-ncc-open-house… Kind regards, Alun Davies RIPE NCC

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10 years of RIPE Atlas - some stories
by Robert Kisteleki 16 Nov '20

16 Nov '20

Dear colleagues, RIPE Atlas has officially turned 10! As a way of marking the occasion, we'll be sharing a series of stories over the next couple of weeks looking at its development from the early days onwards. Read the latest instalment every day on RIPE Labs: https://labs.ripe.net/Members/kistel/10-years-of-ripe-atlas-tales-from-the-… Kind regards, Robert Kisteleki RIPE NCC

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New on RIPE Labs: Rolling Out the RIPE Atlas Redesign
by Alun Davies 12 Nov '20

12 Nov '20

Dear colleagues, You might have noticed that RIPE Atlas is looking different. To explain what's changed and why, this article on RIPE Labs gives an update on our latest efforts to roll out a new design for all our services: https://labs.ripe.net/Members/michela_galante/rolling-out-the-ripe-atlas-re… Kind regards, Alun Davies RIPE NCC

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New on RIPE Labs: Language Support for RIPE Atlas Software Probes
by Alun Davies 09 Nov '20

09 Nov '20

Dear colleagues, To help non-English speakers install RIPE Atlas software probes, we’re calling on the community to translate the existing installation instructions into as many languages as possible. Find out how you can get involved right now in this new article on RIPE Labs: https://labs.ripe.net/Members/lia_hestina/language-support-for-ripe-atlas-s… Kind regards, Alun Davies RIPE NCC

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followup question from MAT-WG presentation on
by Brian Trammell (RIPE) 28 Oct '20

28 Oct '20

hi Raffaele, Due to time restrictions, we missed the following question from your MAT WG presentation today, for discussion on the list: "Do you think UDP-O will be successfully deployed in the future? Think of the sctp protocol and how multipath-tcp learned from the deployment barriers." Thanks, cheers, Brian

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New on RIPE Labs: Reviewing RIPE Atlas Software Probes
by Alun Davies 27 Oct '20

27 Oct '20

Dear colleagues, After launching RIPE Atlas software probes back at the start of the year, it's high time for a proper review of how they've been performing. In this new article on RIPE Labs, our colleague Stephen Strowes does just that: https://labs.ripe.net/Members/stephen_strowes/reviewing-ripe-atlas-software… Kind regards, Alun Davies RIPE NCC

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RIPE Atlas Deployathon - 25 November 2020
by Lia Hestina 27 Oct '20

27 Oct '20

Dear colleagues, As part of the 10th anniversary of RIPE Atlas, we're organising a virtual RIPE Atlas software probe deployathon. Join us on 25 November 2020 to help us celebrate 10 years of RIPE Atlas by adding 10x10 software probes over 10 hours! You can get much more information about the event in this RIPE Labs article: https://labs.ripe.net/Members/becha/lets-deploy-together-ripe-atlas-softwar… Feel free to share it with your local communities and hopefully we’ll see you all on 25 November! Kind regards, Lia Hestina RIPE NCC _________

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public access to RIPE Atlas data on Google BigQuery
by Stephen D. Strowes 26 Oct '20

26 Oct '20

Hi, We're happy to announce that we're opening up a public beta of RIPE Atlas data hosted on Google BigQuery. Details and pointers are at these links: * https://labs.ripe.net/tools/ripe-atlas-on-bigquery/ripe-atlas-on-bigquery * https://labs.ripe.net/Members/stephen_strowes/announcing-ripe-atlas-data-on… This follows from a talk to the MAT WG at RIPE79, where we discussed some of our earlier experience on the platform. The broad goal is to offer new ways to explore the RIPE Atlas dataset. Please try it, and let us know what you think. Send your feedback or report problems to us at atlas-bq(a)ripe.net Cheers, S.

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Demo of next RIPEstat UI during RIPE81
by Christian Teuschel 23 Oct '20

23 Oct '20

Dear colleagues, Ahead of the RIPE meeting, I would like to invite you to a RIPEstat drop-in session on Thursday, 29 October 2020 starting at 12:00 (UTC+1). In this session, the RIPEstat team will present the next generation of RIPEstat’s UI and give a short demo followed by a Q&A. More information is available at: https://ripe81.ripe.net/programme/parallel-events/ Hope to see you there! Best regards, Christian Teuschel RIPE NCC

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New on RIPE Labs: The Lockdown Effect - Implications of the COVID-19 Pandemic on Internet Traffic
by Alun Davies 21 Oct '20

21 Oct '20

Dear colleagues, Oliver Gasser from the Max Planck Institute for Informatics has been investigating the impact of COVID-19 on Internet traffic as seen from a variety of vantage points. Read Oliver's overview of his and his colleagues' findings in this new article on RIPE Labs: https://labs.ripe.net/Members/oliver_gasser/the-lockdown-effect-implication… Kind regards, Alun Davies RIPE NCC

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Reminder: RIPE NCC Open House: RIS in Focus
by Emile Aben 19 Oct '20

19 Oct '20

Dear colleagues, This is a reminder for the RIPE NCC Open House session on Mon 20 October 10 UTC: RIS in Focus Event details and registration are here: https://www.ripe.net/participate/meetings/open-house/ripe-ncc-open-house-ri… Hope to see you there, to help us shape our routing information system RIS! kind regards, Emile Aben RIPE NCC

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New on RIPE Labs: Route Collection at the RIPE NCC - Where are we and where should we go?
by Alun Davies 07 Oct '20

07 Oct '20

Dear colleagues, Ahead of our upcoming RIPE NCC Open House on RIS, we're inviting interested parties from across the community to provide their input on how we can make our Routing Information Service best fit for the purposes of its users. Look at how you can contribute to the discussion in this new article on RIPE Labs: https://labs.ripe.net/Members/emileaben/route-collection-at-the-ripe-ncc-wh… Kind regards, Alun Davies RIPE NCC

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Internet Country Report: Central Asia
by Suzanne Taylor 22 Sep '20

22 Sep '20

Dear colleagues, We’ve published the latest in our series of country reports, this time highlighting five countries in Central Asia. This is the fifth such country report that the RIPE NCC has produced as part of an ongoing effort to support Internet development throughout our service region by making our data and insights available to both local technical communities and decision makers. The report looks at the state of the Internet in Central Asia, including its market landscape and regulatory environment, Internet number resources and opportunities for growth, access to the domain name system and traffic exchange points, and the operators and paths providing international transit into the region. The findings are based on data collected by the RIPE NCC’s measurement platforms, along with a few external data sources. You can learn more and download the report from RIPE Labs: https://labs.ripe.net/Members/suzanne_taylor_muzzin/ripe-ncc-internet-count… <https://labs.ripe.net/Members/suzanne_taylor_muzzin/ripe-ncc-internet-count…> We’re hosting an online discussion for the local Internet community about the report’s findings and its implications for Internet governance in the region on 14 October from 10:00-11:30 CEST. You’re welcome to join in the discussion, but please note that it will take place in Russian: https://www.ripe.net/participate/meetings/open-house/ripe-ncc-open-house-ce… <https://www.ripe.net/participate/meetings/open-house/ripe-ncc-open-house-ce…> Please let us know your thoughts about the report and what kind of data and analyses you find useful. And please share it with any colleagues who might be interested. Best regards, Suzanne Taylor RIPE NCC

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New on RIPE Labs: Looking Inside Outages with RIPE Atlas
by Alun Davies 08 Sep '20

08 Sep '20

Dear colleagues, Following our first glance at the Belarus outages, we’ve been looking at ways both old and new to get information out of RIPE Atlas probes situated inside these kinds of events. An update on some of our recent efforts on this front is now available on RIPE Labs: https://labs.ripe.net/Members/alun_davies/looking-inside-outages-with-ripe-… <https://labs.ripe.net/Members/alun_davies/looking-inside-outages-with-ripe-…> Kind regards, Alun Davies RIPE NCC

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New on RIPE Labs: Our First Glance at the Belarus Outages
by Alun Davies 12 Aug '20

12 Aug '20

Dear colleagues, We've used RIPE NCC tools and datasets to take a first look at the recent Internet outages that took place in Belarus over the weekend. Find out more about how our services can help support further analysis of these kinds of Internet events in this new article on RIPE Labs: https://labs.ripe.net/Members/alun_davies/our-first-glance-at-the-belarus-o… Kind regards, Alun Davies RIPE NCC

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Agenda and Webex link for RIPE MAT WG / IRTF MAPRG joint interim meeting on August 5
by Brian Trammell (RIPE) 30 Jul '20

30 Jul '20

Greetings, all, The agenda for our upcoming joing RIPE MAT WG / IRTF MAPRG joing interim meeting has been uploaded to the IETF Datatracker: https://www.ietf.org/proceedings/interim-2020-maprg-01/agenda/agenda-interi…; the agenda is copied below for convencience. The meeting will take place from 15:00 to 17:30 CEST. The meeting will be hosted using IRTF MAPRG's Webex facility; the link to participate is: https://ietf.webex.com/ietf/j.php?MTID=m8506f91d53fc769f2afaaa81c917c0ef Look forward to seeing you next week, Nina and Brian, with Mirja and Dave (MAPRG chairs) --------------------------------------- ## Joint RIPE MATWG / IRTF MAPRG online interim meeting agenda after IETF-108 Date: August 5, 1:00 - 3:30pm UTC Webex link: https://ietf.webex.com/ietf/j.php?MTID=m8506f91d53fc769f2afaaa81c917c0ef ### Overview & Status - Nina (MATWG) & Dave (MAPRG) (10 min) ### Mechanism and Performance Evaluation of RIPE IPmap Active Geolocation - Massimo Candela (15-20 min) ### Internet Measurements of the COVID-19 pandemic - Emile Aben, Vesna Manojloivic, Lai Yi Ohlsen (15-20 min) ### RIPE NCC Tools Update - Robert Kisteleki (10-15 min) #### [IRTF Note-well](https://irtf.org/policies/irtf-note-well-2019-11.pdf) applies for this part ### Textual Analysis Methodology for Security Considerations Sections - Mark McFadden (10 mins) See also <https://datatracker.ietf.org/doc/draft-mcfadden-smart-rfc3552-textual-resea…> ### Latency & AQM Observations on the Internet - Jake Holland (15 min) ### Packet Latencies in Mobile Network - Philipp Bruhn (15 min) ### MUST, SHOULD, DONâ€™T CARE: TCP conformance in the wild - Mike Kosek (10 min) This paper was presented at PAM'20 and the video available is available here: <https://www.youtube.com/watch?v=45qWYQRlAak> *This talk contains only a short summary and some updates. If you would like to see the full talk, please watch the video in advance!* ### "Debogonising 2a10::/12" - Stephen Strowes (15 min) This paper was presented at TMA'20 and the video available is available here: <https://vimeo.com/425663114> *This talk contains only a short summary and some updates. If you would like to see the full talk, please watch the video in advance!*

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AFRINIC-ISOC-AU webinar on Measuring Africa’s Internet Resilience
by Amreesh Phokeer 20 Jul '20

20 Jul '20

Date: July 21, 2020 Time : 11:00am UTC - 12:30 UTC Register here : https://isoc.zoom.us/webinar/register/WN_xwtrHhCDQEqsC8VVd9k1TQ Webpage: https://www.internetsociety.org/events/african-internet-resilience/measurin… Hashtag: #AfricanInternetResilience -- Amreesh Phokeer

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Measurement study on understanding global email configuration quality
by Tobias Fiebig 07 Jul '20

07 Jul '20

Dear all, I am a researcher at TU Delft in the Netherlands, looking into Network Security, Protocol Adoption and human factors. My student Olamide is looking into how well _sending_ email setups are maintained around the globe. For this, we need many people, ideally from 'smaller' providers, i.e., with non gmail/hotmail/yahoo addresses, to send us emails. Please consider participating in this study, and sharing it in your networks. To help us, please follow the instructions at: https://www.email-security-scans.org/ Important caveat: If your mailer validates recipient addresses before accepting mails for delivery, you might be unable to send to destination addresses that are (a) only resolvable via IPv6 only, or (b) Have broken DNSSEC, which we use to test DNSSEC validation. If this is the case, please just remove the 1-3 offending addresses from the To: header. Please also note that our test setups will test whether the host delivering mails to us is an open relay. Also note that you may receive bounces from your mailserver for some of the destination addresses, e.g., if mails cannot be delivered via IPv6, or if your mail-setup validates DANE records for our DANE test domain. We do _not_ need a copy of those bounces. In case you want to get results for a domain you operate or use early, please just drop me an email from the same domain and delivering servers after you participated, and I will share the data with you. :-) Met vriendelijke groet, Dr.-Ing. Tobias Fiebig, Assistant Professor / Universitair Docent Department Engineering Systems and Services Informatie- en Communicatie Technologie (ICT) TU Delft / Dept. ESS Faculty of Technology, Policy and Management (TBM) Building 31 Jaffalaan 5 - room B3.170 2628 BX Delft P.O.Box 5015 2600 GA Delft, The Netherlands T +31 (0)15 27 85700 E t.fiebig(a)tudelft.nl Present: Monday t/m Friday

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Joint interim meeting, MAT WG + IRTF MAPRG, Wednesday 5 August
by Brian Trammell (RIPE) 24 Jun '20

24 Jun '20

Greetings, all, We've heard disappointment from some of you about our decision to opt out of having a virtual meeting at RIPE 80. We made this decision in large part because we believe a big part of the utility of MAT to the community is the networking opportunities between measurement research and tools development and the Internet operations community, which are diminished in a virtual meeting, and at the time we thought waiting until the next in-person meeting was the best thing to do. As none of us now knows how long it will be until we can safely meet in person again, we thought we should make up for the missing meeting. We've also decided to try and take advantage of the virtual format by organizing something that would be difficult-to-impossible to do without heavy logistical lifting for the in-person meeting: holding a joint meeting with the IRTF's Measurement and Analysis for Protocols (MAP) Research Group. MAPRG has much the same format and goals as MATWG, but fosters exchange between measurement research and the IETF protocol engineering community; the two groups' interests overlap substantially. Together with the MAPRG chairs, we are tentatively planning to hold this meeting on Wednesday 5 August 2020 at 15:00 CEST, with remote participation details to follow. If you have something you'd like to present at this joint session, please let us know at mat-wg-chairs(a)ripe.net by Friday 3 July. Thanks, cheers, Nina and Brian

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