#Osmocom founder. Mobile Communication expert. Former netfilter/iptables hacker, freedom fighter. nerd., kinky; #retronetworking. Mensch mit Kommandozeilenhintergrund. searchable via tootfinder. Director of @sysmocom
Public Key
npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 Profile Code
nprofile1qqsry2dvcm5mkcve32gchal7ce58470fc4a7xj3t70xegw665x0x6wgpz4mhxue69uhhyetvv9ujuerfw36x7tnsw43qny3fpa
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Published at
2026-08-12T11:25:39Z Event JSON
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"created_at": 1786533939 ,
"kind": 0 ,
"tags": [
[
"proxy",
"https://chaos.social/users/LaF0rge",
"activitypub"
],
[
"client",
"Mostr",
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],
"content": "{\"name\":\"LaF0rge\",\"about\":\"#Osmocom founder. Mobile Communication expert. Former netfilter/iptables hacker, freedom fighter. nerd., kinky; #retronetworking. Mensch mit Kommandozeilenhintergrund. searchable via tootfinder. Director of @sysmocom\",\"picture\":\"https://assets.chaos.social/accounts/avatars/000/067/219/original/b66109c6adeb054f.png\",\"nip05\":\"[email protected] \",\"fields\":[[\"Homepage\",\"https://laforge.gnumonks.org\"],[\"Blog\",\"https://laforge.gnumonks.org/blog/\"],[\"Presentations\",\"https://media.ccc.de/search/?q=Harald+Welte\"],[\"PeerTube\",\"https://tube.tchncs.de/a/laf0rge/video-channels\"]]}" ,
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Last Notes npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge James Randall "I Started Programming When I Was 7. I'm 50 Now, and the Thing I Loved Has Changed" on software complexity, abstractions, AI and older vs younger developers: https://www.jamesdrandall.com/posts/the_thing_i_loved_has_changed/ npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…m7ah excellent news. Hoernchen was talking abour a need for this for years. Good to See someone finally got around doing it! npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge When all you want to do is to get a gym membership, but they are so f*cked up in terms of GDPR compliance that you have to write several e-mails and file two GDPR complaints in two different German states instead :/ npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge I'm currently looking to expand my social network and would love to get in touch with anyone in the "global south" (especially African countries) involved in #hamradio, wireless community networks, #FOSS or #OSHW development or the #maker and #hacker communities. I'd be very happy if anyone from the above target groups would reach out and introduce themselves #followerpower npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Is there any place at #39c3 that has a microwave for heating up food? I recall from past events that the Angel restaurant provided some, but that seems no longer to be the case. Now i brought homemade food and can't heat it up :/ @nprofile…xj54 npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge So ziemlich das nerdigste deutsche #retronetworking Buch, das man ich vorstellen kann ist gerade auf booklooker aufgetaucht (Suchauftrag läuft schon lange): "Handbuch Btx-Recht. Mit einem Kommentar zum Bildschirmtext- Staatsvertrag" - leider antiquarisch zu teuer für den Spass. #btx #dfü npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Is there anyone in #brazil who would help me by purchasing some (small/lightweight) #retrocomputing items available domestically from mercadolivre and ship them to me in Germany? #followerpower #retronetworking #brasil npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…73w4 4 tage ist bei mir noch schnell ;) npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge I'm currently looking for one or more volunteers to maintain the Openmoko USB PID + OUI service at https://github.com/openmoko/openmoko-usb-oui as the existing maintainer is no longer available. This is a service providing free USB Product IDs and Ethernet MAC addresses for the #FOSS and #OSWH community. Volunteers have to review of the PRs fulfill FOSS/OSHW licensing requirements before merging PRs. #usb #opensource npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Ist es nicht schön, nach welchen Kriterien ein Deutscher Großkonzern die Arbeitsplätze differenziertm Ich hätte gerne auch einen [GSM, 3GPP, 5G, Bluetooth, TETRA] Arbeitsplatz bitte 😉 npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…ftwc @nprofile…fqnk ist lange her dass ich jenwn teil der Specs gelesen habe, aber AFAIR: Notrufnummern jenseits der im GSM als überall funktionierenden 112 werden über die SIM dem Telefon beigebracht. Das mapping von Nummer zu "emergency call" passiert im Telefon. Zumindest im 2G und 3G hat ab der Luftachnittstelle ein emergency call keine zielrufnummer. Diese ist implizit dadurch dass das Gerät sagt "ist ein notruf" npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…42hg vielen dank, da schaue ich doch gleich mal. npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Ich suche nach einer Bezugsquelle für kleine Zuschnitte (30x40cm) von Schaumstoff-Platten h=2-3cm mit hoher Shore-Härte. Ideal 200 (20 kPa). Weiss da jemand was? #followerpower #maker #diy npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge in case anyone has an unused [replicated] #39c3 presale ticket voucher left-over: @nprofile…hng3, one of the greatest hackers I've ever had the pleasure of working with @nprofile…hng3 is looking for one. #ccc #followerpower npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…n34d credits go to @nprofile…2j2v for taking it! npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge I just managed to pick up eight "Sun Netra 210" 1U UltraSparc-IIIi servers yesterday. In case any #retrocomputing enthusiasts here (particularly those of you I know personally) are interested in such equipment, please let me know. #sun #ultrasparc npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…leff ist halt die Frage, warum ein MNO sich dran stören sollte, dass bezahlte SIM karten bezahlte Dienste in seinem Netz nutzen. Solange keine Überlastung durch zu viele SMS [geht hier sicher um 2FA] passiert, ist doch aus business-sicht alles besgtens. Der Begrug findet ja einige layer höher statt, und der MNO ist nicht der Geschädigte. npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge video recording of operation SIMcartel: Police raiding what looks like a massive SIM + modem bank deployment in Latvia, using 40,000 SIM cards https://www.youtube.com/watch?v=Z-ImysXws-0 npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge So there's a decades-old mechanism (and actual standard) how programs lock serial ports on unix-like systems in /var/lock. it's used in practice even in 2025 and #systemd >= 258 simply breaks it with "we don't care". I am not a systemd opponent, but that kind of behaviour [without a prior community-wide discussion or providing patches for known-affected projects and a grace period] is just alienating users and developers https://github.com/systemd/systemd/issues/38563 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1110980 #systemd #debian npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge I meanwhile arived in Amsterdam for the Embedded Linux Conf Europe which I haven't been to in ages. Will present on FOSS eSIM integration into Embedded Linux devices #elce2025 #linux #esim npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge So, after spending two half days in a colocation filled with several decommissioned but fully complete [including software] Siemens #EWSD digital telephone exchanges, I am happy to report that two of them will be rescued. We've dümpelt the hard disks and done some initial disassembly. Full disassembly and relocation will happen in upcoming months. #retronetworking #isdn #TelecomHistory npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Tonight I had a dream involving meeting a (recovered) fefe. Highly unusual, don't recall ever having dreams involving him before. In any case, let's hope for his best recovery and hopefully the dream will become reality at some point #fefe npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…m8mr @nprofile…d0nl Every organization has to consider what they do in terms of FOSS licensing and why. Certainly you are entitled to your choices. In #osmocom we have developed loads of software during 17 years, most of it AGPLv3. We have not seen any of our commercial users reimplement any of our code under more permissive licenses ever. npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…m8mr @nprofile…d0nl well, basically you are saying that working with entities that exhibit a [almost certainly irrational] fear of GPLv3 is more important than using a stronger copyleft license thst would give end users more rights. That's everyones' own choice to make. I know there are heavily regulated markets like automotive where there are real legal problems with GPLv3. But beyond that, what exactly is the rational, well-founded reason for those OWMs fear of GPLv3? npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge lT security 101: Don't leave your company laptop with authentication smart card inserted, applications open and without screensaver at your seat when using the lavatories on a train. Unbelivable... npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge does anyone know something about the coverage/deployment status of the LTE450 network of 450connect.de ? #cellular #lte #telecom npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge I just stumbled over this article about the history of video telephony: https://mashable.com/archive/videophone-turns-50 #retronetworking #telecommunications npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge In case you haven't seen it yet, check out the analysis of the devastating state of [mostly] modern #OpenSSL by members of haproxy at https://www.haproxy.com/blog/state-of-ssl-stacks - hard to imagine such massive performance regressions getting into mainline linux distributions unnoticed by the distributors. #linux #ssl npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge ROTFL: #Vodafone Germany claiming publicly that TETRA is baesd on 2G, and that 2G can only transport voice: https://newsroom.vodafone.de/politik-und-gesellschaft/virtuelles-sicherheitsnetz-fuer-polizei-und-rettungskraefte - don't they have anyone with a bit of technical clue proof-reading such public corporate communication? #telecom #gsm #3gpp #tetra npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge does anyone know a museum or collection that contains a working/operational Ericsson AXE10 digital telephone exchange? #telecom #ericsson #history #retronetworking npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…drls @nprofile…vjnh yes I presume OpenEZX might have been the first attempt at open source software for the application processor of a smartphone. At least I didnt know any other such project back then. It sadly never went very far, as several key contributors including I got "distracted" with doing #openmoko - but that was also a good thing, of course npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…tggg ich nutze #IRC vermutlich täglich seit 30 Jahren... ausser email schafft das vmtl kaum ein anderes Kommunikationssystem. npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge The German language podcast "Besser Wissen - Alles über ein Netz" by @nprofile…m8sp chatting with me about #ISDN history / #retronetworking has just been released at https://besserwissen.podigee.io/120-isdn npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…k3q5 @nprofile…mesd i can't help you there, seem like one of the various proprietary virtual/software SIM approaches :/ npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…85f4 @nprofile…4rzw @nprofile…htaz you could probably also do softmodem over audio over TOSLINK ;) yate can talk to also devices, so there should be a way ... - I know, it has no useful application, other than layering technologies in a way they were never used before. Sadly T1 is 1.544 Mbps otherwise it would also be cool to do T1 over TOSLINK... npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Just saw this beautiful teardown of a 3.5" floppy drive with beautiful shots by Richi's Lab (CC-BY-NC): https://www.richis-lab.de/floppy.htm #retrocomputing #floppy npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge @nprofile…qr4n @nprofile…pn69 @nprofile…qp30 es gibt ISDN-Faxgeräte als G3 (analogfax mir modem und ISDN-ab-wandler eingebaut), als auch als G4-Geräte (digitale Datenübertragung im B-Kanal). Das war nie kompatibel, ausser ein ende kann G4+G3. G4-Faxgeräte in Hardware sind sehr rar. Die Benamung ist leider verwirrend. "T-Fax 360 ISDN" ist ein G3-Analogfax mit a/b TA. "T-Fax 360 G4" ist dann das echte ISDN fax... um welche Geräte geht es konkret? npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Does anyone know of anyone with a Microwave oven at #38C3? I have some food I'd want to warm up. Thanks! #followerpower npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Wer mal in einem alten Telekom-Katalog blättern will: https://archive.org/details/telekom_katalog_1994_1995 - mit Xitel, Delegatic, Euro-ISDN, Datex-J, Cityruf, C-Netz, ISDN-Adapter für Parallel-Port, u.v.m. #retronetworking #ISDN #Telekom npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Whenever some product is advertised with "unmatched performance", the RF / signal integrity part of my brain goes "who would ever want that?". #electronics npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge there is now also a permanent installation of fax2fedi posting to @nprofile…zawa - reachable from the OCTOI TDM-over-IP network as well as from C*NET (phone collectors network). If you're part of those networks, you can fax to 493012349999 *NOT A PSTN NUMBER!* npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Hacked up a telefax to fediverse gateway last night (see https://gitea.osmocom.org/retronetworking/fax2fedi) for the #38c3 @nprofile…qp30 network. Toots sent at the event will show up at @nprofile…ujqs npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Wir planen ein Kennenlern-Wochenende der deutschsprachigen #retronetworking community in 2025 (Ort: Berlin). Wer Interesse hat, bitte unter https://discourse.osmocom.org/t/treffen-im-deutssprachigen-raum/298/20 melden und beim dudle-link eintragen, wann ihr Zeit haettet. npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Do any of the #iPhone hackers in my timeline know of a method of exchanging arbitrary APDUs with the eUICC (likely similar/same to the SIM) on hacked/rooted Apple devices? I want to find out some properties of the eUICCs used by Apple. @nprofile…hz55 #followerpower npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge TIL: The second "A" in the name of the historical French telecom supplier ALCATEL actually stands for atomique (nuclear): "Société Alsacienne de Constructions Atomiques, de Télécommunications et d'Électronique" #retronetworking npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge #GSM security nightmares keep repeating every few years. A5/4 was approved by 3GPP at the same time as A5/3 (2009), but most vendors were lazy to change from 64bit to 128bit keys on both UE and network side. After the A5/2 and later A5/1 disasters of the past decades, the industry now again wasted 15 years until practial attacks catch up: https://www.iacr.org/cryptodb/data/paper.php?pubkey=34281 https://iacr.org/submit/files/slides/2024/crypto/crypto2024/500/slides.pdf npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge If somebody with a clue about Android development in Kotlin wants to help out: I have no clue what I'm doing but trying to improve EasyEUICC to use a preference to determine whether or not to list/filter certan eSIM profiles - any help is appreciated: https://gitea.angry.im/PeterCxy/OpenEUICC/issues/30#issuecomment-165 npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Does anyone know of any consumer smartphones that support #eSIM MEP (Multiple Enabled Profiles)? Android supports it since Android 13 - but are there SGP.22 v3.x eUICCs with ME support deployed? https://discourse.osmocom.org/t/any-esim-enabled-devices-with-mep-multiple-enabled-profile-suport/422 npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Stumbled across an interesting PhD thesis on the history of "British Computer Networks and the Internet": https://wrap.warwick.ac.uk/1197/1/WRAP_THESIS_Rutter_2005.pdf #retronetworking #retrocomputing #telecoms npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Cheers from #holidays, riding [not only] along the Route des Grandes Alpes in the #french #alps on my 28-year old youngtimer BMW F650 ST npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge CompilerFax: Sending C source code via telefax to a compiler-as-a-service which then faxes you the output of your program; demo: https://www.youtube.com/watch?v=pJ-25-pRhpY git: https://github.com/lexbailey/compilerfax intended for #emfcamp #retronetworking #whatagreathack npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge I found something that looks like a marketing picture that shows this ancient video phone in action: npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge Latest #retronetworking acquisition: One of the first commercially available #ISDN video telephones (this unit built in 1992, but I think the model is available 2-3 years longer). Apparently the "Telekom Bildtel 001" was built around a LOEWE MultiTel TV10 BTX terminal, plus an AEG/OLYMPIA codec unit and a TV camera. npub1xg56e3hfhdsenz5330mla3ng0tu7n3tmud9zhu7djsa44gv7d5usxxwyl6 LaF0rge ROTFL: There actually is/was medication that they called ISDN (Isosorbid dinitrat): https://cdn.shop-apotheke.com/images/D02/747/140/D02747140-p12.jpg #isdn #retronetworking
