All things related to multicast

[Peter John Hill <>]

On Jul 26, 2005, at 11:21 AM, debbie fligor wrote:

> At 9:24 -0400 7/25/05, Alan Crosswell wrote:
>
> >  - Firewall w/multicast?
> > -> - Ask Debbie 
> > Fligor@UIUC

Yikes... are you talking about GRE tunnels and sending the multicast  
around them? Are you also doing something like msdp with prefix lists  
for filters to limit the traffic somewhat through the gre tunnel...  
what sources are allowed to be known from one side to the other?

I am curious as to the applications that one would want to run across  
a firewall that use multicast... I also wonder if there are better  
solutions then sending the multicast directly through? Something  
along the lines of what Tibco (yuck) does... or perhaps for something  
like video, a reflector outside the "trust boundary" of the firewall.

Just remember, multicast is fun!

Peter



> I know more about how to bypass them than how to make them work.
>
> --
>
> -debbie
> Debbie Fligor, n9dn       Network Engineer, CITES, Univ. of Il
> email: 
>
>           <http://www.uiuc.edu/ph/www/fligor>
> "Every keystroke can be monitored. And the computers never forget."