On Tuesday 16 December 2008, you wrote:
> ...
>
> > I'm working on a project (www.abenteuerland.at/onioncat) that
> > needs a TUN
> > device. I'm now trying to port the software to Windows
> > (Cygwin).
> >
> > ...........
> >
> > How do I compile and install the TUN/TAP driver?
>>
> You will need the DDK, but here's a silly question:  can you not use the
> existing (built) one?  Are you making modifications to the driver itself?
>

No, I don't need any modification. I know, that the pre-built one works with 
openvpn.
But if I start the Cygwin shell there's no /dev/tun. Hence, I thought that I 
have to compile and install it from source.
But maybe I need another method (than /dev/tun) to access the driver on 
Windows. I tried to find the right code parts within the Opnevpn source but 
unfortunately I didn't know where to look...the code base isn't small ;)

> I admittedly did not read thoroughly your project page, but it looks like
> you are wanting to replace the user-mode openvpn component (which does the
> encryption and tunnelling) with TOR to provide a kind of transparent TOR
> proxy.  I would expect you can do this with the existing TAP driver because
> it's a little like not caring so much about the remote VPN network, but
> rather caring more about your default gateway.  Just a guess.

Yes, you're right. OnionCat is a transparent VPN (like OpenVPN) based on TOR's 
hidden services. That's why I use the TUN/TAP device. It works very well on 
Linux und other Unixoids but now I'd like to port it to Windows. My biggest 
problem seems to be this TUN/TAP driver, hence my posting ;)
Maybe you could give me some hints.

Thanks,
Berhard

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