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VoIP, Tor and Zfone by Phillip Zimmermann?
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- Subject: VoIP, Tor and Zfone by Phillip Zimmermann?
- From: Anothony Georgeo <anogeorgeo@xxxxxxxxx>
- Date: Tue, 16 May 2006 07:21:58 -0700 (PDT)
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I was thinking of routing a VoIP call (SIP protocol)
via. a VoIP client into Phillip Zimmermann's new
then into Tor before the VoIP call reaches the other
One problem I see is that most VoIP clients use UDP (I
think) and so does Zfone. But, Zfone has a proxy
configuration window (I think) which may route into
TCP/IP. I only have a windows box and the Windows
Zfone isn't released yet.
I was thinking of routing a VoIP call via. a VoIP
clinet into Zfone (port 5060) then into Tor (via.
Torcap with Zfone). Does Torcap do UDP to TCP/IP?
Another idea is to communicate with other parties via.
Tor's Hidden Services(HS). Can HS be configured to
route a VoIP call? Could a HS .onion address is used
inplace of the other parties VoIP number in a VoIP
Does anyone know of a good, open-source and free VoIP
clinet for Windows XP/NT?
-Slighlty off topic-
What the Tor community really needs is a "UDP to
TCP/IP" library for Tor (if that's even possible).
This way UDP protocol specific programs could be used
with Tor. I know "TCP/IP to UDP" library is possbile
as UDP is the underlying protocol for TCP/IP (I
-Back to topic-
Zfone runs in the IP stack and detects a VoIP call
when it starts. Zfone then captures, secures (eg.
authenticates) and encrypts all VoIP packets 'on the
fly'. Zfone creates an end-to-end tunnel to other
Zfone users via. TLS and it also uses DH key
agrements. Zfone also offers defense from MiTH
attacks via. a short authentication code that appears
in all parties Zfone GUI to be read over the phone for
Any opinions, thoughts?
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