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!
Polycom VSX5000 x2
Polycom VSX7000s x1