ISA 2006 Videoconference to external IP

Posted on 2009-02-10
Last Modified: 2012-05-06

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 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
Question by:bvq
    LVL 15

    Accepted 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.

    Author Comment

    Requesting Point Refund

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