1.21 battlemesh-v17-2025 2025-06-10 2025-06-16 7 00:05 https://pretalx.freifunktag.de https://pretalx.freifunktag.de/media/battlemesh-v17-2025/img/wbmv17logo_bBs8RS1.jpg Europe/Berlin Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-11T11:00:00+02:00 11:00 00:20 Let's start the event battlemesh-v17-2025-398-opening en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/EXVL9A/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/EXVL9A/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-11T11:30:00+02:00 11:30 01:00 A talk about community fibre deployment concepts, experiences, costs, needed tools, splicing fibre cables, 10G/25G/100G equipment recommendations battlemesh-v17-2025-394-diy-fibre-backbone-deployments Bluse en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/HMSBNC/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/HMSBNC/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-11T14:00:00+02:00 14:00 00:40 small tank about mesh networks and the process around them in Argentina battlemesh-v17-2025-404-mesh-networks-and-social-impact javier en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/ME8DXM/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/ME8DXM/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-11T18:30:00+02:00 18:30 00:20 A journey on how I rewritten shared-state in rust and how it pleasantly fits in OpenWrt routers. battlemesh-v17-2025-407-shared-state-rewrite-in-rust-for-fun-and-profit G10h4ck en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/LVC8TZ/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/LVC8TZ/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-13T10:00:00+02:00 10:00 01:00 QKD in a nutshell for Battlemeshers, Labtour with entanglement based quantum key distribution systems, Rosenpass & OpenWrt Wireguard integration battlemesh-v17-2025-395-real-quantum-key-distribution-qkd-systems-in-our-village-with-inject-to-openwrt-wireguard Bluse en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/U7R8YG/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/U7R8YG/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-13T11:10:00+02:00 11:10 00:40 Let's see together what's inside APuP, how to benefit from, and future developments battlemesh-v17-2025-406-apup-and-beyond G10h4ck en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/TCZD77/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/TCZD77/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-13T12:00:00+02:00 12:00 00:40 Preseting an OpenWRT-based research-prototype for isolating smart home devices. What is the perspective for OpenWRT - packges? battlemesh-v17-2025-409-private-network-segmentation-for-smart-homes yanosz en Isolated WLAN for Smart Home Devices enhances the privacy of its users. Privacy Protection Goals such as Integrity, Confidentiality or Unlikability can be addressed. The prototype as based on hostapd wpa_psk_file, OpenVSwitch a MPLS. Isolation is performed in 802.11 mesh. How to make this available to end-users? As of now, I see no good way to integrate the prototype into OpenWRT. This may be complex, because ut touches various configurations (WLAN, OVS, Mesh). Also, I'm not aware of any user-friendly IEEE 802.11 mesh configuration in OpenWRT or user-interface to wpa_psk_file. Is the a perspective for OpenWRT packages? false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/RCGABU/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/RCGABU/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-13T15:00:00+02:00 15:00 00:40 An overview of old and new mesh routing protocols. battlemesh-v17-2025-400-old-and-new-mesh-routing-protocols /media/battlemesh-v17-2025/submissions/ZEUJVA/logo_35ZDMeW.png mwarning en In this talk I like to give an overview of existing mobile ad-hoc mesh routing protocols like BMX, Babel, B.A.T.M.A.N.-adv, Yggdrasil, Reticulum, Meshtastic and others. We will talk about the general idea behind them, how they work, the development status and history. false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/ZEUJVA/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/ZEUJVA/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-13T16:00:00+02:00 16:00 00:20 Nostr (notes and other stuff transmitted via relays) is a simple protocol for exchanging information in the form of signed JSON. User generated public keys serve as identities and all business logic is executed client side to minimize reliance on 3rd party infrastructure. Thanks to social media clients, users have started to create lists of public keys that they want to receive content from, thus creating the first web of trust that bootstrapped successfully. However, I just use nostr as an overlay network, which allows me to ignore low level networking details when I want to implement application layer tooling for mesh networks. battlemesh-v17-2025-399-what-is-nostr-and-how-do-i-use-it-in-my-project- /media/battlemesh-v17-2025/submissions/9RTFXH/nostr_bj8vpEZ.png c03rad0r en true https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/9RTFXH/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/9RTFXH/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-13T16:30:00+02:00 16:30 00:40 Let's take a look on projects from last year and this year, let's discuss if we want to continue with GSoC. battlemesh-v17-2025-393-gsoc-review-and-outlook Andi Bräu en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/833K9R/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/833K9R/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-13T17:30:00+02:00 17:30 00:40 Smart switches are part of most wireless infrastructures - but many still run the vendor firmware, capabilities to install own software are limited. OpenWRT enables open firmware with modern Linux kernel, software updates, and your own software. Recent Realtek Switches come with great specs at a reasonable price point. I'll provide an overview of technical capabilities and limitations, current integration status and features of OpenWRT on Realtek, and discuss some applications for testbeds, community networks and wireless ISPs. battlemesh-v17-2025-402-openwrt-on-realtek-switches Simon Wunderlich en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/YNYX93/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/YNYX93/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-13T18:30:00+02:00 18:30 00:40 Deploying Nextcloud on SBC (Single Board Computers). Targeted audience are normal people. A personal cloud for Addresses, Calendar, Passwords, and maybe Photos hosted on your own {Raspberry,Orange,Banana,Rock}-Pi. Current status: VPS is ready, realizing peer-to-peer backup. battlemesh-v17-2025-412-privat-im-netz-nextcloud-on-small-computers- Sven-Ola Tuecke en Talk introduces my little Nextcloud zoo and the https://privat-in.de web site. Those little SBC boxes have a good concept to store data securely and are ready for backups. I'll talk on the data storage concept used and how it's supposed for mutual (peer-to-peer) backups. On top of this, you can install Nextcloud using NextcloudPI. To make the setup easy for normal people, one can reach a personalized little box from the internet via HAProxy with SNI redirecting to a personal Wireguard tunnel. This setup is suitable if your provider gets you behind CGNAT or MAP-T or in cases you simply are un-able to configure port forwarding yourself. The plan is to make money for my local hackspace offering (payed) courses to people e.g. how to master those little beasts, how to link your smartphone to them, how to use a password manager, and how to secure / restore your backups. false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/DRSQZB/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/DRSQZB/feedback/ Rautenkranz Workshop - 1 hour 2025-06-14T15:00:00+02:00 15:00 01:00 Reactivate CN-SIG !!! battlemesh-v17-2025-405-empowering-community-networks-discussion-about-establishing-special-interest-group-isoc Monic MeiselAdam Burns en Community Networks (CN) and Community-driven Internet Exchange Points (Community IX) are key components of a more resilient, decentralized, and inclusive Internet Infrastructure. They empower local communities, promote digital sovereignty, and strengthen Internet openness. With the increasing centralization of Internet infrastructure, community-driven approaches such as CN and Community IX offer practical, values-driven alternatives. Among others, several Freifunk groups are members of our Community IX. These grassroots collaborations provide concrete pathways toward resilient, community-based interconnection models — highly relevant in today’s Internet governance and policy discussions. As a long-time community networks advocate and co-founder of freifunk.net — one of the largest CN initiatives in Europe — I see great potential: ISOC Chapters can play an important role in making these efforts more visible, scalable, and policy-relevant. In Europe, we have had to face some setbacks in recent years — including regulatory and funding challenges. But with a strong grassroots Internet culture and active Chapters, we still offer fertile ground to advance this work, with valuable lessons for other regions. Bringing this topic into the SIG ecosystem for 2026–2027 would: • Align strongly with ISOC’s mission (an open, globally connected, secure, and trustworthy Internet for everyone) • Provide hands-on opportunities for ISOC Chapters — with potential global relevance • Foster cross-cutting collaboration with existing groups (former CN-SIG members, DC3, Gender SIG, Youth SIG, Accessibility SIG) false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/GRVPE7/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/GRVPE7/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-14T16:00:00+02:00 16:00 00:20 Try to increase the forwarding performance by intercepting a data packet very early inside or even before the Linux network stack. battlemesh-v17-2025-413-flow-offloading-via-ebpf Til Kaiser en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/XPGMNW/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/XPGMNW/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-14T17:30:00+02:00 17:30 00:20 A standalone tool to visualize mesh networks from JSON files. We will show a demo how to also use the Mesh Graph Viewer as a visual interface for a simulated mesh network running batman-adv. See https://github.com/mwarning/MeshGraphViewer/ battlemesh-v17-2025-401-mesh-graph-viewer /media/battlemesh-v17-2025/submissions/DKQVDM/screenshot-ff-graph_KItW6ei.png mwarning en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/DKQVDM/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/DKQVDM/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-14T18:00:00+02:00 18:00 00:20 Have you been wondering how to keep using your old routers that have not enough storage to fit a modern OpenWrt insie? Me too let's discuss about it toghether. battlemesh-v17-2025-408-openwrt-as-a-smart-bootloader-chainloader G10h4ck en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/RCZULN/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/RCZULN/feedback/ Rautenkranz Workshop - 1 hour 2025-06-14T18:20:00+02:00 18:20 01:30 We will discuss the picopeering agreement with the goal of enhancing it, to suit the communities needs even better. (pros/cons, bugs, scope ...) https://picopeer.net/ Remote participants can join the discussion via this jitsi-link: https://meet.ffmuc.net/battlemeshInSundhausen These are the notes from last years meetings, on which we can build: https://pad.dyne.org/code/#/2/code/view/X8b7h6y8gjze-QtbhZ-IKb7-kZ0W0oerRh9H9ncww0s/ battlemesh-v17-2025-403-working-group-for-a-further-development-of-the-pico-peering-agreement- Mathias en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/HWAJSK/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/HWAJSK/feedback/ Saal Workshop - 2 hours 2025-06-14T10:00:00+02:00 10:00 02:00 Learn how to deploy your own fibre network battlemesh-v17-2025-411-diy-fibre-jetting-splicing-and-testing Bluse en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/JANDRV/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/JANDRV/feedback/ Rautenkranz Workshop - 1 hour 2025-06-15T10:30:00+02:00 10:30 00:30 After the Kickoff with Monic and Adam, we would like to discuss topics, such as the scope, the title and the potential further locally as an offline session at the Battlemesh. battlemesh-v17-2025-415-workshop-further-discuss-isoc-sig-ideas Mathias en true https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/APAX9A/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/APAX9A/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-15T11:00:00+02:00 11:00 00:20 Did you remained sadly surprised by the lack of a way to programmatically configure build options of Linux kernel? I have. I needed to configure Linux kernel and OpenWrt (which uses Kconfig too) build options from a script but found no proper way to do it, so I had to come up with this. battlemesh-v17-2025-410-kconfig-utils-how-to-programmatically-deal-with-your-config G10h4ck en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/QE9JWB/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/QE9JWB/feedback/ Rautenkranz Workshop - 1 hour 2025-06-15T11:20:00+02:00 11:20 01:00 There should be an easy way for community networks to make themselves known to the world, and there should be an easy way to find out about community networks, when traveling somewhere, making research, etc. The HackerSpace Wiki does a good job hackspaces. Let's reflect how we could build something similar! https://wiki.hackerspaces.org/ battlemesh-v17-2025-414-workshop-discussion-about-a-community-network-community-infrastructure-web-page-similar-to-hackerspace-wiki- Mathias en Topics: - what are the needs of the communities? - what structured information should be available? - how could we do it? false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/M7CRBA/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/M7CRBA/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-15T12:30:00+02:00 12:30 00:20 Kiezbox is a pilot project to build an emergency mesh network. Aimed to provide average citizens a means of communication in case of blackouts. Developed as open source project and publicly funded by the state of Berlin. After a quick recap, I will focus on some interesting technical aspects and achievements. battlemesh-v17-2025-416-kiezbox-returns-one-mesh-is-not-enough Jan en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/ASQ3RD/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/ASQ3RD/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-15T12:50:00+02:00 12:50 00:40 Community networks movement in Indonesia gaining its momentum during COVID-19 pandemic outbreak in 2020. Currently the movement has been growing, while enhancing community-centered connectivity initiatives with meaningful access in rural & remote areas. battlemesh-v17-2025-418-community-networks-development-in-indonesia Gustaff H. Iskandar en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/SLB7DA/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/SLB7DA/feedback/ Rautenkranz Talk - 30 min + 10 min Q&A 2025-06-15T18:00:00+02:00 18:00 01:30 Let's look in the results and talk about the events itself. battlemesh-v17-2025-396-summary-and-retrospective en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/MB8X3N/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/MB8X3N/feedback/ Rautenkranz Talk - 15 min + 5 min Q&A 2025-06-16T12:00:00+02:00 12:00 00:20 Say good bye and look forward to the next Battlemesh battlemesh-v17-2025-397-closing-session en false https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/3FYHGM/ https://pretalx.freifunktag.de/battlemesh-v17-2025/talk/3FYHGM/feedback/