25c3: OnionCat -- A Tor-based Anonymous VPN

[Nytro]

[h=1]25c3: OnionCat -- A Tor-based Anonymous VPN[/h]

Uploaded by ChRiStIaAn008 on Dec 10, 2010

Speakers: Daniel Haslinger, Bernhard Fischer

Building an anonymous Internet within the Internet

OnionCat manages to build a complete IP transparent VPN based on Tor's hidden services, provides a simple well-known interface and has the potential to create an anonymous global network which could evolve to a feature- and information-rich network like we know the plain Internet today.

Tor provides so-called "Hidden Services". These are services which are location hidden within the Tor network. This means that not only users are hidden but also services (destination). Tor manages this by assigning virtual addresses to them, so-called .onion-URLs. Tor builds all connections based on them.

Unfortunately, access to hidden services is currently not very user-friendly which makes them unattractive although they could provide high privacy in today's world.

OnionCat provides an IP-transparent service which does on-demand connections to designated hidden services. This is a Tor-specific virtual private network (VPN). Because of its IP-transparency any client program can use hidden services without further workarounds.

This talk is about OnionCat in general, gives a brief introduction into its internals and application examples.

More information about the 25th Chaos Communication Congress can be found via the Chaos Communication Congress website: 25C3: 25th Chaos Communication Congress

Source: Conference Recordings - 25C3 Public Wiki