Post AsAmo9UZpLJ0pW4EaG by bsod@framapiaf.org
(DIR) More posts by bsod@framapiaf.org
(DIR) Post #AsAmjMHspLgD48qP44 by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:09:18Z
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OK, what is the hashtag for the #Netnod meeting?https://www.netnod.se/event/netnod-meeting2025PS: the password of the Wifi is great.
(DIR) Post #AsAmo9UZpLJ0pW4EaG by bsod@framapiaf.org
2025-03-18T08:10:09Z
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@bortzmeyer "great" is a short password but for a shared wifi I guess it's fine?
(DIR) Post #AsAmpNVbCRHUah87jE by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:10:26Z
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@bsod :-)
(DIR) Post #AsAn2CXtGsUOM1JgAq by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:12:44Z
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For those who don't know, #Netnod manages a #DNS root server, a big IXP (Internet exckange point), secure time distribuition (an important thing for Netnod)... It's one of the organizations that make the Internet run.
(DIR) Post #AsAnEMMyZVlwIW0bqK by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:14:55Z
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80 PoP for the #Netnod #DNS anycast network.
(DIR) Post #AsAnfVtRGskTeZ8nbM by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:19:50Z
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Now, the first talk" Artificial Intelligence is really good for the environment?" (Bill Gates said yes.)#Netnod
(DIR) Post #AsAoqOOVam7NXGQPHk by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:33:00Z
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We often talk about electricty production but, in many countries, distribution is the bottleneck. many grids are overloaded.#Netnod
(DIR) Post #AsAoylbDCVezoxMNdo by winfried@fosstodon.org
2025-03-18T08:34:29Z
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@bortzmeyer yes, in Germany for instance
(DIR) Post #AsApaSXSW2GLi4ZskS by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:41:19Z
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An example of an AI data center: xAI in Memphis. 100,000 H100 GPUs (150 MW).Some power provided by "Solar turbines" (which are not solar at all, it is the name of the company)The local electricity company agreed to provide more, if they receive public money for that.Basically, it is not clear they'll manage to get as much electricity.#Netnod
(DIR) Post #AsApfKqMYMpLI9kF8q by bortzmeyer@mastodon.gougere.fr
2025-03-18T08:42:12Z
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I learn there is a project for a cable between Ireland and France, so Ireland could suck nuclear electricty and claim they don't release too much carbon dioxyde.
(DIR) Post #AsArZPRKkdofiZL82S by bortzmeyer@mastodon.gougere.fr
2025-03-18T09:03:32Z
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"Nuclear seems the perfect solution to power AI data centers"But delays and costs have a bad habit of slipping out of control.Subcontract to Rosatom?#Netnod
(DIR) Post #AsAroGK4vkFrmm1q64 by bortzmeyer@mastodon.gougere.fr
2025-03-18T09:06:13Z
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"When I was a child [the speaker has a grey beard], nuclear fusion was 40 years in the future. It still is."#Netnod
(DIR) Post #AsArqI5DMBERpA2kQC by elecharny@framapiaf.org
2025-03-18T09:06:35Z
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@bortzmeyer « Celtic Interconnector », 1.5B€. The question is: where does it take electricity from, considering it will start in La Martyre (near Brest), which receives its electricity from Cordemais (coal), a 200KW line to Landivisiau (gaz) and nuclear plants in Loire.https://fr.wikipedia.org/wiki/Celtic_Interconnectorhttps://fr.wikipedia.org/wiki/La_Martyre
(DIR) Post #AsAsBKYNMpN9ZDiRuq by bortzmeyer@mastodon.gougere.fr
2025-03-18T09:10:23Z
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What about #SMR (Small Nuclear Reactors)? Have your own nuclear reactor in your backyard!You can already buy one from russian or chinese companies. Or Nuscale in the USA. Others are in the pipeline.#Netnod
(DIR) Post #AsAsLYZi5f9RwxDT16 by hyde@lazybear.social
2025-03-18T09:12:12Z
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@bortzmeyer Bill who? Ah the vaccine specialist !
(DIR) Post #AsAwiAmx5qwCeeRx1k by cstross@wandering.shop
2025-03-18T10:00:56Z
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@bortzmeyer Firstly, they're only "small" in comparison to 5Gw monsters like the EPR: they're actually the size of 1960s municipal reactors. Secondly, a herd of SMRs produces more spent fuel (waste) than a single large reactor. Thirdly, they're not backyard size: no 200-500MW power plant is! They're substantially bigger than you'd need for a nuclear-powered aircraft carrier.
(DIR) Post #AsAyDU1rhvDFG8v2vo by bortzmeyer@mastodon.gougere.fr
2025-03-18T10:17:41Z
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Designing a data center for AI, by Nokia. Connecting GPUs: the pattern of traffic is different than ordinary traffic (more bursty, with long perios of network rest, when the GPU "think").Despite "common knowledge", Ethernet works as well as InfiniBand here.#Netnod
(DIR) Post #AsAyj2iMnVQloNqbjs by bortzmeyer@mastodon.gougere.fr
2025-03-18T10:23:43Z
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Now, #football "Evaluation of the impact of #UEFA Champions League Wednesday matches on Internet traffic at MINAP and NAMEX" by Gianluca Sironi. "Football is a religion"https://www.minap.it/ https://www.namex.it/#Netnod
(DIR) Post #AsB1Jbx7SdJnQwJSKm by bortzmeyer@mastodon.gougere.fr
2025-03-18T10:52:44Z
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So, the networks we build and manage are really useful: there is a marked increase of traffic when there is a #football match (people follow them in streaming, not on traditional TV or physically).#Netnod
(DIR) Post #AsB2xjvHLYD3gs9OZE by motofix@mamot.fr
2025-03-18T11:11:09Z
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@bortzmeyer mainly because research have been drastically reduced during the past 50 years. Now this is a priority again.
(DIR) Post #AsB7gf7cRW1reGbBgG by bortzmeyer@mastodon.gougere.fr
2025-03-18T12:04:08Z
1 likes, 1 repeats
OK, back with cybersecurity. Networks and penetration testing. (I'm surprised to be the only one raising my hand when the speaker asked "who redid his/her threat model since 21 Jan.?")#Netnod
(DIR) Post #AsB8A3X8lB2nl2YIPw by bortzmeyer@mastodon.gougere.fr
2025-03-18T12:09:27Z
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Interesting weakness: nobody ever upgrades the firmware of the power supplies and, these days, they even have a HTTP server.#Netnod
(DIR) Post #AsB8F54uRbqZzpk9jM by bortzmeyer@mastodon.gougere.fr
2025-03-18T12:10:22Z
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"Who scanned the QR code at the entrance of the building?" [Nobody raises a hand.] "You are liars."#Netnod
(DIR) Post #AsB8aRmdDpWCUqNlhI by cbrocas@infosec.exchange
2025-03-18T12:14:11Z
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@bortzmeyer what happened last Jan. 21?
(DIR) Post #AsB8ivQUtULwkW4WDw by bortzmeyer@mastodon.gougere.fr
2025-03-18T12:15:43Z
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@cbrocas https://en.wikipedia.org/wiki/Second_inauguration_of_Donald_Trump
(DIR) Post #AsB8v8W03XYConT6Om by jpmens@mastodon.social
2025-03-18T12:17:55Z
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@bortzmeyer forgive the possible off-topic question, but is #netnod when I read something on the net and nod my agreement?
(DIR) Post #AsB90hf8o2r7H3Om2q by bortzmeyer@mastodon.gougere.fr
2025-03-18T12:18:57Z
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"Blessed are the paranoids, for they test their backups."#Netnod
(DIR) Post #AsB9fhBFVHMBeSxnN2 by bortzmeyer@mastodon.gougere.fr
2025-03-18T12:26:21Z
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"We wrote this software, which means we have bipedal documentation inside the company."#Netnod
(DIR) Post #AsB9nRBWrGmwMKmnRo by yaurthek@mastodon.top
2025-03-18T12:27:43Z
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@bortzmeyer Q: How far are we from nuclear fusion? A: About 1AU.
(DIR) Post #AsBBeVDegnO4AoeED2 by bortzmeyer@mastodon.gougere.fr
2025-03-18T12:48:31Z
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Network administration automation. Level 0 "cutting and pasting from Microsoft Word" Level 1 "you have simple scripts"...Level 5 : AI?#Netnod
(DIR) Post #AsBBuciiZIp44Rrdp2 by needa@piaille.fr
2025-03-18T12:51:26Z
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@bortzmeyer Level 6 : Codomancy, predicting the code needed for the future by asking the Eternal Beings 😁
(DIR) Post #AsBDnmiXCWokxPe424 by bortzmeyer@mastodon.gougere.fr
2025-03-18T13:12:39Z
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Interesting talk by Steve Jones, about the power consumption of optical links in metro networks.I learn that almost all the transceivers consume *less* power than was is written on the datasheet.#Netnod
(DIR) Post #AsBEFlaiysTdZcKpEm by bortzmeyer@mastodon.gougere.fr
2025-03-18T13:17:42Z
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But for every watt used to power the links, you need more or less another watt to cool the hardware.#Netnod
(DIR) Post #AsBFZfY9Fjfua8BTE0 by bortzmeyer@mastodon.gougere.fr
2025-03-18T13:32:29Z
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Now, geopolitics: analysis of Baltic Sea cable NSC East-West and C-LION1 breaks. Using RIPE Atlas probes. Only the effects, not the [unknown] cause [there are a lot of theories].Anchors (big servers running Atlas software) continuously test each other. After the break, latency increases in 1/4 of the paths. "It won't ruin your cat video"#Netnod #war #sabotage
(DIR) Post #AsBFlpVk2jlOx0rC9g by bortzmeyer@mastodon.gougere.fr
2025-03-18T13:34:42Z
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No packet loss. Other routes were found very fast.The Internet worked.#Netnod #robustness
(DIR) Post #AsBGDQxutdwmvsCM7M by bortzmeyer@mastodon.gougere.fr
2025-03-18T13:39:41Z
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30 % of the route changes were inter-domain (thanks, #BGP) 50 % were intra-domain (thanks, OSPF and IS-IS).The rest was a change in the circuits, but with the same routers.#Netnod #traceroute
(DIR) Post #AsBOqaOiYolb74uknA by bortzmeyer@mastodon.gougere.fr
2025-03-18T15:16:24Z
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Presentation of the national swedish system to distribute secure and reliable time in the country.#Netnod
(DIR) Post #AsBTCRfY5qUuEISwN6 by bortzmeyer@mastodon.gougere.fr
2025-03-18T16:05:10Z
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#Roughtime, a protocol to get secure time, specially for a constrained device (IoT). Correct time is critical for security (X.509, DNSSEC, TOTP, logs, etc). So, time has to be secured.The typical thing has a poor clock, not backed by a battery. They depend on network time. (Picture of a thing displaying time as 1970-01-01)#Netnod
(DIR) Post #AsBU5WCCxrA2CE0EG8 by bortzmeyer@mastodon.gougere.fr
2025-03-18T16:15:07Z
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We have a #NTS (#NTP secure) but it depends on TLS which depends on X.509 certificates which depend on time... Chicken-and-egg problems are common when securing time.#Roughtime is currently a Internet-Draft. https://datatracker.ietf.org/doc/draft-ietf-ntp-roughtime/ (speaker is a co-author).Important concepts: very long-term server keys, several servers queried by the client#Netnod
(DIR) Post #AsBUqZxYmxGhTnajY0 by bortzmeyer@mastodon.gougere.fr
2025-03-18T16:23:37Z
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Already several implementations of #Roughtime and may be soon an experimental RFC.https://roughtime.se/#Netnod
(DIR) Post #AsBWygDhb2XF7Y8GlU by tth@mastodon.tetaneutral.net
2025-03-18T16:47:28Z
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@bortzmeyer --> https://en.wikipedia.org/wiki/Dad%27s_Nuke / https://fr.wikipedia.org/wiki/Papa,_maman,_l%27atome_et_moi