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[liberationtech] Skype interception - Project Chess

Richard Brooks rrb at
Fri Jun 21 09:20:48 PDT 2013


You've probably explained this before, but what is the difference
between OSTN and RedPhone?



On 06/21/2013 10:30 AM, Nathan of Guardian wrote:
> On 06/20/2013 10:08 AM, Jacob Appelbaum wrote:
>> To the Skype promoters, apologists and deniers - I encourage you to
>> start using, and improving Jitsi - it needs a lot of love but it at
>> least has a chance of being secure, whereas Skype is beyond repair.
> I also want to add to this, that in order to use Jitsi, you need a
> trustworthy, privacy-oriented SIP service provider [0], to go with it.
> This means someone that doesn't keep logs, doesn't require real name
> registration, defaults to secure, and that also offers features to help
> defend against traffic analysis and mass metadata gathering [1].
> This is exactly what we have been working on at Guardian Project with
> our Open Secure Telephony Network [2] project and our public
> beta/testbed service at The base service platform we are using
> is Kamailio [3], which is a project that should be as equally supported
> as Jitsi.
> Ultimately, our goal is not to replace one single service with another
> single service, but rather to enable every user, organization, NGO,
> collective, cooperative, etc to run their own service, or at least have
> a variety of hosted service operators that run at a known quality and
> standard for privacy-oriented voice and video communications.
> +n
> [0] OSTel privacy policy
> [1] more technical discussion here about our approach compared to a
> typical voice operator:
> [2] OSTN/OStel source
> [3] Kamailio - Open Source SIP Server -
> --
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R. R. Brooks

Associate Professor
Holcombe Department of Electrical and Computer Engineering
Clemson University

313-C Riggs Hall
PO Box 340915
Clemson, SC 29634-0915

Tel.   864-656-0920
Fax.   864-656-5910
email: rrb at

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