[AG-TECH] "waiting for video" with unicast

[Fred Dech]

On Thu, Feb 17, 2005 at 09:51AM, Robert Olson said:
> 
> On Feb 17, 2005, at 9:41 AM, Fred Dech wrote:
> 
> >i've run into the same problem on a unicast network.  bridging, RAT 
> >received
> >audio, but VIC did not receive any video.  other clients connected to 
> >the
> >same venue could see both the bridged video and audio.  i've not yet
> >tracked down the problem.  when/if i do, i will share the results.
> 
> That's one description of the problems one sees with firewalls that 
> have reflexive ACLs installed - outgoing traffic on a port enables 
> incoming traffic on that port. Since rat uses the same source and 
> destination port, it will work properly. Vic uses different source and 
> dest ports, so the traffic won't flow back in.
> 
> --bob
>
aha!
this client is behind a firewall.  the firewall is purported to be completely
open.  but i'll bet that it has "reflexive ACLs" installed.  that is another
in a series of new NAT/firewall terms i've been learning about as of late.
it sounds good.  i will bring it up with their extremely helpful firewall
administrator and see if he is willing to do anything to help solve this
problem.

thanks you so much, Bob.

--fred