Re: [GnomeMeeting-list] Encrypted video

[Johnny Strom <jonny strom netikka fi>]

Hi

RAT works in some platforms including windows but I am not so sure if it 
would be possible to get it working on MAC.

http://www-mice.cs.ucl.ac.uk/multimedia/software/rat/

It dose encryption but it is not so Robust as the name is saying,
I used it before I found Gnomemeeting but now I would never go back to
RAT anymore :) RAT had the advantage of encryption but not so much else.
And it seems like there is no more development going on but perhaps
someone will wake it upp some day :)


Cheer Johnny



Craig Southeren wrote:
> On Mon, 05 Jan 2004 23:59:24 -0800
> Derek Simkowiak <dereks realloc net> wrote:
>
>
> >     Hello all,
> > 	I am seeking advice for a proof-of-concept project.
> >
> > 	I want to build a network of webcam users who can video chat together, but with all traffic encrypted.
>
>
> ..deleted
>
> Derek,
>
> You pose an interesting question :)
>
> While there may be a single commercial products that meets your needs,
> if you want to use Open Source then you will almost certainly need to
> use a collection of programs.
>
> If I wanted to solve this problem for myself, I would use the following:
>
> a) Use a standard client like GnomeMeeting to be the video and audio
> endpoint. Problem solved :)
>
> b) To do the encryption, you will need to use a H.323 proxy (and
> possibly a gatekeeper) that can combine the video and audio streams into
> an encrypted channel and then demux at the other end. I'm not aware of
> anything that can actually do this, although I vaguely remember that
> GnuGK might have some capabilities in this regard. You may want to check
> out http://www.gnugk.org for more information. (For what it is worth,
> this exact feature is on my To Do list for my own routing gatekeeper :)
>
> c) For a multi-person conference, you will need an MCU. The only MCU I
> know of is OpenMCU, and it is not production ready code (see my blog at
> http://users.tpg.com.au/adsl87w7/blog/ for more information)
>
> So if I was going to solve this problem, I would have some code to write
> and debug. Oh dear :(
>
> In your email, you dismiss using a general purpose VPN to solve the
> problem, but I would not be so quick to do this. Firstly, unless I am
> mistaken, the only common point between all of the machines is the
> central server. If that box is locked down, viruses/worms etc cannot be
> spread to other machines. There are a few Open Source VPN products, but
> I have had a lot of success with a program called CIPE. See
> http://sites.inka.de/sites/bigred/devel/cipe.html for more information
> on this.
>
> In relation to NetMeeting, that particular program implements
> encryption and authentication via T.120. As far as I know, those methods
> are only implemented by high-end video conferencing equipment. It is NOT
> based on H.235
>
>    Craig
>
>
>
> -----------------------------------------------------------------------
>  Craig Southeren, craigs postincrement com http://www.postincrement.com
>  Post Increment - Software, Consulting and Services
>  Co-founder of the only open source H.323 project
>  Phone: +61 2 43654666   Fax: +61 2 43673140   Mobile: +61 417 231046
>  ICQ: #86852844          MSN: craig_southeren hotmail com   
>  GnuPG Public Key:  http://www.postincrement.com/pgp.txt
>  Blog:              http://users.tpg.com.au/adsl87w7/blog/
>
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