Chaos Computer Club - archive feed

This talk will present ifupdown-ng, a new project by the Network Services Association intended as a drop-in replacement for ifupdown1 and ifupdown2 installations.  Presently, Alpine and Debian are the primary supported environments.  Support for other Linux distributions and BSD is planned. With its modular design, ifupdown-ng intends to allow flexibility for today's modern networking setups, whil...

In this presentation we will talk about why it is time to replace MD5, what options are available, we introduce the TCP Authentication Option (TCP-AO), explain the concept and where it differs with MD5. We also look at GTSM and why you still need additional security. Last couple of slides touch on implementation status and interoperability testing. about this event: https://pretalx.denog.de/denog1...

We replaced our whole BGP setup and redesigned the network from scratch. We merged two ASes into one and decided to implement it as a service on an EVPN label switching fabric based on 100G links (no VXLAN this time). The setup is both scalable and flexible enough to run multiple routing instances for different customer needs. about this event: https://pretalx.denog.de/denog12/talk/SANGWE/

How we use a pipeline to configure a SDN underlay with Mellanox and Cumulus Linux (now Nvidia) using GIT, Ansible, Eve-NG and GoCD. What are the differences between underlay and overlay networks in SDN? In my talk, I will present our move from classic network administration to Net(Dev)Ops using repositories, stages and pipelines. I will show how network administration changed from the early 90s un...

We all use a lot of power, but most of us never had the chance to actually understand the underlying basics of electrical energy when it comes to data centers. Things you will take away from this: * What is capacitative load and why is it different from inductive and resistive? * Why is 3 * 230V = 400V? * Why do you need minimum distance between large wires? * Why is V * A != Watt? And why is V *...

In this talk, Andreas (Andy) Bechtolsheim will share his vision for how the 400G and 800G transitions will manifest first in the DC and short haul interconnect build-outs, and then extend to 100-1000km and beyond, all based on next generation digital coherent optical technology. Advances in DSP and modulation technology make it possible to include 400G, and soon, 800G coherent optical transponders...

After the latest project, EMnify became a 99% only cloud company. To meet growing scalability and reliability requirements of the interconnection between our AWS-based deployments and multiple carriers, BGP peerings had to be moved out of AWS. Therefore, a pair of Juniper routers were put into place. For a company fully relying on cloud services so far, this alien technology resulted in several ch...

What does it take to build an IXP from scratch? Which technology is required and what are the operational and organizational requirements to keep it going and to attract peers? This talk aims to answer these questions from the perspective of Stuttgart-IX, which was rebuilt from scratch in 2020. After having a look at all these aspects we'll give a perspective on the necessity and role of independe...

LoRa is a modern modulation to transmit small chunks of data over long distances. A growing amount of sensors exist to collect environment data like temperatures or parking spot availability. Many companies are analysing the possibilities of a LoRaWAN network and plan to invest in a network or connect to an existing one. I will give you a brief introduction to LoRaWAN networks, when they are a fea...

Many of us agree that peering policies of some incumbents are broke. Init7 (AS13030) took this topic to regulator and court and won the case after seven years. During that time the cartel of Swisscom and Deutsche Telekom had to be ended. This talk will summarize the timeline and will try to give an outlook. The seven-year process involved several judges. The last judge (Swiss Bundesverwaltungsgeri...

In my talk "From a City Provider to a Global Cloud Provider as a career starter", I would like to talk about my experiences from the last 6 months, which came to me as a Network Engineer in the Operations department and how I managed them. The talk aims at how to find your way in the daily business, what are the special features of a new entry and how can I best support the team. about this event:...

Flexible Algorithm provides means to create separate topologies in a single IGP. Flexible Algorithm Definition includes, metric type, algorithm and the link constraints and is used to define the topology. Flexible Algorithm is a simple and easy way to solve use cases such as separating routing-planes, constrained TE paths and low latency routing. It uses IGP extensions and no other protocols or co...

For most you, operating a network, shipping equipment and ordering infrastructure is easy. But how does that scale when you operate 90+ PoPs on all continents (except Antartica) with a team of less than 20 engineers? This talk gives an insight into the operational, organizational and human challenges we encountered on our journey. see abstract about this event: https://pretalx.denog.de/denog12/tal...

Welcome to DENOG12! about this event: https://pretalx.denog.de/denog12/talk/NKD9UJ/

In this talk we'll show you our online plattform and how to use it. about this event: https://pretalx.denog.de/denog12/talk/ZLJTLH/

Are you new to DENOG and want to learn more about the Community, Association, IRC channels and much more? Join us here! about this event: https://pretalx.denog.de/denog12/talk/RNKNWF/

Wie wir die #pw20 gemacht haben, wohin es uns gebracht hat und was #nächstesjahr kommt ... Freiwillige Helfer:innen, Organisation, Infrastruktur und OpenSource-Software ftw! about this event: https://cfp.privacyweek.at/pw20/talk/WDAQAQ/

2020 hat Ja gut angefangen für die Internet bzw. Computersecurity Gemeinde. Dann sorgen wir auch mal dafür das es auch gut endet. Dieser Talk ist ein Update vom Talk des letzten Jahres. IT bzw. Computersicherheit ist ein spannendes Gebiet. Nicht nur für Kriminelle sondern auch für Wissenschaftler, Programmierer und Benutzer. Wir alle sollten wissen das keine 100% Sicherheit existiert. Deswegen möc...

"Mobiltelefonie" ohne forced login In diesem Talk möchte ich zu Beginn über die Gründe sprechen, aus denen ich mich weigere, Hardware zu kaufen, welche mich zwingen will eine Vertragsbeziehung mit einem internationalen Konzern ein zu gehen. Besonders dann, wenn dieser noch nicht einmal der Hersteller des Geräts ist. Daran anschließend folgen Informationen darüber welche Möglichkeiten einem dann üb...

Tatorte sind Orte eines Geschehens. Meistens ist das Ereignis nichts Wünschenswertes. Es gibt Täter:innen, Opfer, Beutegut, und ein Schaden ist auch entstanden. Wir illustrieren die Parallelen zwischen Analog und Digital mit Hintergrundwissen und Fällen. Das #TheMurderBoard Projekt, auf dem dieser Vortrag basiert, entstand aus beiläufiger Kommunikation. Im Zuge einer Diskussion um IT Sicherheit un...

Der menschliche Faktor ist auch bei Privacy-Enhancing Technologies am Werk: Warum nutzen Menschen, die sich um Ihre Privatsphäre sorgen, keine Privacy-Enhancing Technologies und wie kann man dies durch Methoden des nutzer*innen-zentrierten Designs verändern? Der Vortrag geht auf wissenschaftliche Paradigmen der Human Factor Privacy-Forschung ein: Was ist das Privacy Paradox? Wieso gibt es eine Lüc...

Ca. 150 Chaoten sind dabei, eine Hackergenossenschaft zur gründen, um ein Unternehmen zu haben, wenn man mal eines braucht. Erklärvideos gibt es u.a. auf media.ccc.de, Suchwort "Hacker eG". Infos auf der Seite des Gründervereins VEB IT e. V.: vebit.xyz Ca. 100-150 Chaoten sind gerade dabei, eine Hackergenossenschaft zur gründen, um ein Unternehmen zu haben, wenn man mal eines braucht. Erklärvideos...

Mike W. Lucas reads from his novel "$ git commit murder." Plus a preview of his next tech book, "TLS Mastery," and a Q&A afterwards. The BSD North conference draws some of the smartest people in the world. These few days will validate Dale Whitehead’s work—or expose him as a fraud. When a tragic death devastates the conference, only Dale suspects murder. Computer geeks care about code. But do they...

Dystopien, Utopien und Jahrhundertromane - wo Autor:innen irrten Wenn wir von unserer heutigen Informationsgesellschaft sprechen, werden oft Vergleiche mit "1984" und "Schöne neue Welt" gezogen. Aber auch "Fahrenheit 451" hat Parallelen unserer heutigen Alltagswelt vorweggenommen. Wo stehen wir als Gesellschaft im Jahr 2020 und wo haben sich die Autor:innen vielleicht auch mal geirrt? about this e...

Die blutige Wahrheit hinter pastelligen Zyklusapps: Wie Konzerne, Versicherungen und staatliche Stellen deine intimsten Daten nutzen. Sie helfen uns dabei, unseren Körper besser zu verstehen und auch die Übersicht zu bewahren, auch wenn die Hormone Achterbahnfahren. Sex mit oder ohne Empfängnisverhütung, Schwangerschaft oder die Periode, sogenannten Zyklus-Apps (auch: “Perioden-Tracker”) vertrauen...