Cjdns

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Encrypted networking for regular people.

Alle mal Luft anhalten und hinhören. Das ist revolutionär.

Stell Dir vor: Du gibst ein:

./cjdroute

und es fährt ein virtuelles Netzwerkinterface tun0 hoch, welches Dir eine IPv6 Adresse anhand eines öffentlichen Schlüssels generiert, und Du verbindest Dich zu einem oder mehreren Rechnern, die ebenfalls mit weiteren Rechnern auf diese Art verbunden sind, und Du kannst Daten verschlüsselt zu allen Teilnehmern übertragen, die Teil von diesem Netzwerk sind. Das ist cjdns. Caleb James DeLisle’s Network Suite.

Ein Public-Key-Kryptonetzwerk mit elliptischen Kurven, wo nur derjenige Daten empfangen und lesen kann, der den privaten Schlüssel kennt.

Cjdns implements an encrypted IPv6 network using public key cryptography for address allocation and a distributed hash table for routing. This provides near zero-configuration networking without many of the security and robustness issues that regular IPv4 and IPv6 networks have.

Die Routing-Engine. Man hat mehrere Verbindungen zu mehreren Knoten, und das Routing funktioniert einfach. Keine Konfiguration, keine grossen Router. Cjdns benutzt verteilte Hashtabellen, um den Routingaufwand auf die Teilnehmer zu verteilen und ein Knoten nicht das ganze Netzwerk kennen muss. Und das skaliert. Und das ist schnell.

Ich würde sagen: IPv6 done right.

Immer mehr Leute setzen cjdns-Knoten auf, es entsteht ein riesiges Darknet. Die Hyperboria.

Visualisation des Hyperboria Netzwerks

Ein Internet, wie es einmal ursprünglich angedacht war. Jeder kann routen und peeren, es gibt keine zentralen Instanzen, keine ISPs. Fällt ein Knoten aus, naja, dann gehen die Daten halt einen kleinen Umweg.

Cjdns funktioniert über IPv4, über das bestehende Internet, auch genannt ICANN-Netz. Dort lauschen Knoten auf einem UDP-Port auf cjdns-Pakete. Das tolle kommt aber erst: Es braucht gar kein bestehendes (IPv4) Netzwerk. Alternativ kann man cjdns auch so konfigurieren, dass es mit Beacons um sich ruft und an den benachbarten Kabeln nach anderen cjdns-Knoten sucht. Anders gesagt:

Kabel einstecken, und die Computer finden sich selbständig, das Netzwerk konfiguriert sich von selbst und routet. Weltweit.

Why?

To give regular people more power over their communications.

Why are we lacking power and what does that mean? The Internet is in many ways the great equalizer, bringing to everyone the powers once reserved to those wealthy enough to own a radio station or a newspaper. Still the ownership of the actual infrastructure of the net is exclusive for many reasons, mostly because the protocols involved are simply too complex for regular people to use. (For instance, how many isolated wifi networks are in your neighbourhood – why are they not meshed and providing backhaul transit amongst each other in a robust, secure fashion : complexity).

Bonus: Ein Knoten kann anderen Knoten eine IPv4-Adresse zuweisen, über die dann z.B. bestehende IPv4-Dienste genutzt werden können. Oder ganz einfach der Zugang zum ICANN-Internetz ermöglicht wird.

Cjdns ist also ein verschlüsseltes Meshnetzwerk.

In Zeiten, wo bekannt wird, dass die Geheimdienste alle Daten im Internet abhören und für immer und ewig speichern, schreit das förmlich nach so einem neuen Internet.

The centralization of power is seen in closure of websites such as wikileaks amid public outcry. Without speaking to the validity of one type of speech or another, it is fair to say that in a truly democratic world, only the most unpopular content such as child abuse, fraud and spam would be censored.

Lass uns die Revolution beginnen. Lasst uns ein Darknet aufbauen.

github.com/cjdelisle/cjdns