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ISA 2006 Videoconference to external IP


I have a customer that wants to be able to videoconference to an office in Italy from Portugal, the Italy Office is not VPN connected and has a XDSL internet connection with static public IP.

There are 3 Videoconference devices in the Portugal network (internal not dmz) with internal IP's 172.22.xx.xx ,
all of these devices should be able to Conference with Italy Office.

FYI: The isa 2006 is behind a cisco ASA that establishes internet connections and corporate vpn's.
I' have been trying to follow http://support.microsoft.com/kb/556039 regarding a similar configuration.

I do have some doubts:

Do i really need 3 external ip addresses to publish 3 videoconferences which are only intented to communicate outside with 1 ip (italy) ?

Is there any other way of doing this without using external ip addresses ?

Is it possible to use some kind of <internal videoconference ip > -all comms- <italy ip> considering the ASA could do the ACL?

Point 13 in the mentioned kb creates a client protocol definition but doesn't mention how to use it (i'm guessing an access rule from internal to external?) , can anyone confirm this?

Million dollar question: How would you do it to achieve the main goal?

I'll edit the post as soon as i get the specific models, in case it REALLY matters.

Thanks in advance for any help!


Internal Network
Polycom VSX5000 x2
Polycom VSX7000s x1

Sony PCS-1/1P
1 Solution
the probelm with video-converencing devices is that video traffic wont nat... hence the requirement for public IP's.
As far as im aware, there is no way around this currently.
bvqAuthor Commented:
Requesting Point Refund
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