CWA and dynamically assigned port RRS feed

  • Question

  • Hi,


    I am planning the design for a CWA deployment and I noticed that I had to provide the following firewall requirement:


    1025 - 65,535

    Dynamically assigned for incoming traffic from Office Communication Server 2007 Server


    Now I don't really understand why there is a need to have a specific incomming port defined on the CWA server knowing that we already have a SIP port listening on the CWA and there is no media traffic available for the CWA client.


    In addition if we can't work around this requirement is there a way to FIX this port just like we can do with many other services ?



    Tonino Bruno


    Wednesday, August 20, 2008 1:23 PM


  • Hi Tonino,


    That is why that Microsoft insists that you install the CWA in the LAN and not in the perimeter

    Use a reverse proxy to publish your CWA server


    These ports are required for RPC and the CWA server acts just like a client that dynamically allocates a port to communicate with server


    You can fix ports on communicator but not sure this would work for CWA, I doubt it




    Wednesday, August 20, 2008 9:11 PM