Development update: GNUnet over WLAN

We had a nice hacking session today in my office where the WLAN transport plugin seemed to be working pretty well during a first multi-peer test. The WLAN plugin enables GNUnet peers to discover each other (broadcast) and then communicate. What is special is that the WLAN code does not assume that the peers participate in an existing WLAN-infrastructure (no access point, communication is purely ad-hoc). The basic idea (but not all implementation details) was pioneered by Andy Green's Penumbra.

HOWTO: Running gnunet-service-transport under gdb.

I needed to run gnunet-service-transport and set a breakpoint at __longjmp, here's how I did it.

Polled GNUnet Chat

This is a proposed protocol for implementing a chat system in GNUnet. It is polled, meaning that clients ask (poll) the network for new messages to a specific room. It is much like the protocol for anonymously searching for files on GNUnet. The protocol prevents eavesdropping by making the participants in the chat room aware of being polled and from whom the poll originated.

Motivation
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The reason to design a polled chat system is to exploit the success and well-understood behavior of the file sharing protocol.

Einladung: Methods for Secure Decentralized Routing in Open Networks

Im Rahmen seines Promotionsverfahrens hält Herr Nathan S. Evans am Mittwoch, 10. August 2011 um 16:00 Uhr im Raum 03.07.023, FMI-Gebäude, Boltzmannstr. 3, in Garching einen Vortrag in Englisch mit dem Titel

"Methods for Secure Decentralized Routing in Open Networks"

Viele der Methoden die in dieser Doktorarbeit entwickelt wurden, hat Nate in GNUnet implementiert.

Zusammenfassung

Invitation: Methods for Secure Decentralized Routing in Open Networks

As part of his PhD defense, Nathan Evans will give a talk on Wednesday, 10. August 2011 at 4:00 pm in room 03.07.023 of the FMI-Building, Boltzmannstr. 3 in Garching on the subject

"Methods for Secure Decentralized Routing in Open Networks"

The talk will be in English and is open to the public. Many of the methods developed in this thesis were implemented by Nate in GNUnet.

R5N : Randomized Recursive Routing for Restricted-Route Networks

Evans NS, Grothoff C. R5N : Randomized Recursive Routing for Restricted-Route Networks. In: 5th International Conference on Network and System Security (NSS 2011). 5th International Conference on Network and System Security (NSS 2011). Milan, Italy: IEEE; 2011.

Beyond Simulation: Large-Scale Distributed Emulation of P2P Protocols

Evans NS, Grothoff C. Beyond Simulation: Large-Scale Distributed Emulation of P2P Protocols. In: 4th Workshop on Cyber Security Experimentation and Test (CSET 2011). 4th Workshop on Cyber Security Experimentation and Test (CSET 2011). San Francisco, California: USENIX Association; 2011.

GNUnet Emulation Framework Paper Accepted

A paper entitled "Beyond Simulation: Large-Scale Distributed Emulation of P2P Protocols" has been accepted for publication at CSET '11 and is co-located with Usenix Security '11 in San Francisco, California from August 8–12. Here is the pdf.

Pages

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