[AG-TECH] Lurkers in the venues

[Tony Rimovsky]

Some venues use glop addresses and some are legacy addresses that
were, at one point, assigned by SDR and are still in use long after
the SDR event expired.

/tsr


On Thu, Jan 31, 2002 at 12:41:09PM +0900, shudo at ni.aist.go.jp wrote:
> This discussion brought up one question in my mind. AG
> venues set up by Argonne people keep 20 or more IP
> multicast group addresses. Why those numbers
> (eg. 224.2.177.155 for AG Lobby) are choosen? Are they
> reserved? Are they compliant with the following
> convention?
> 
> | Subject: Re: [AG-TECH] Virtual Venues Server Software
> | From: Robert Olson <olson at mcs.anl.gov>
> | Date: Tue, 15 Jan 2002 08:30:09 -0600
> 
> | If your site has an Autonomous System number assigned, you have 256
> | addresses of class D space to play with. See http://www.ogig.net/glop/ for
> | a calculator to tell you them.
> 
> 
> > It's probably not worth worrying about for most of the conversations
> > taking place, but I just want to make certain that everyone is clear on
> > this... even if there are no apparent "lurkers" in a Virtual Venue,
> > there is no guarantee that someone else is not listening.  Although it
> > may not be likely, someone could join the multicast groups associated
> > with a VV and eavesdrop, right?  Just because the Vic and RAT interfaces
> > don't show someone else in the "room" doesn't mean it is secure.
> >
> > Jeff
> 
> 
>   Kazuyuki Shudo		shudo at ni.aist.go.jp
>   Grid Technology Research Center
>   National Institute of Advanced Industrial Science and Technology (AIST)