Re: Video conferencing



On Thursday 01 February 2007 15:05, Frank Pineau wrote:
When I travel on business, I like to set up video chat to talk to my
family at home. The problem is, home is behind a NAT firewall (a PIX to
be exact). I have limited IP addresses and cannot spare one to
statically assign to an endpoint inside my network for this purpose.
Regardless, I'd like to be able to connect to any node in my network,
depending on who I want to call. I never know what I'm going to be
behind, but it's usually also some sort of NAT firewall that I do not
control. I've tried ekiga (nee Gnome Meeting), and a few others with
almost no luck. I thought something like skype (which doesn't support
video under linux) or an instant messenger that uses an intermediary
server (Yahoo, ICQ, etc.) to get around the NAT issues but none of those
support video either. I've tried VPN to my PIX, but as I can't control
where I'm coming from, I haven't been able to configure a reliable VPN
client for linux.

Much depends on your router. The NetGear that I bought recently does allow a
service to be made available to more than one end-point box. I believe that
it's what is called a 'stateful inspection firewall'. I've not tried it out,
so I don't know whether the initialisation would have to be from the home
box, though. Without that, it would be necessary to change port-forwarding
settings each time a new user was required - obviously not a good idea for
your situation.

aMSN is quite good in serving video, but there is no voice chat yet - it's in
the pipeline. You see the other person, but have to type your messages.
I've used it with a windows msn user at the other end, without any problems,
too.

In short, when trying to video conference under linux, I'm successful
around 5% of the time. It's almost always easier to boot into Windows
and do it from there. What do you use for mobile video chat and how
have you set it up?

I used to use GnomeMeeting with h.323 and that worked very well. I think
ekiga's move to sip, while good in the long run, introduces more
complications. Sadly, I don't have a friend using ekiga that I can test it
with, but I believe the people do get very good results.

Things are far from perfect, but improving all the time.

Anne

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