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Thread: What is COM Surrogate

  1. #1
    tasman Guest

    Default What is COM Surrogate

    What is COM Surrogate and should I let it access the internet in program control?Tasman

    Operating System:Windows XP Pro
    Software Version:7.0
    Product Name:ZoneAlarm Pro

  2. #2
    Join Date
    Dec 2005
    Posts
    9,056

    Default Re: What is COM Surrogate


    <blockquote><hr>tasman wrote:
    What is COM Surrogate and should I let it access the internet in program control?Tasman

    Operating System:
    Windows XP Pro
    Software Version:
    7.0
    Product Name:
    ZoneAlarm Pro

    <hr></blockquote>


    COM Surrogate image name is dllhost.exe.
    DCOM DLL host process supports DLL-based COM objects and is used by many Windows programs.
    Used most often for the IIS and .NET Runtime.

    No Internet Information Server or using the .NET on the Internet?
    Then it probably does not need internet access.
    It may very well happen a windows update one day will require the dllhost.exe to have internet access during the update. But that will be a rare day.

    Since the dllhost.exe is involved with COM objects, and then indirectly involved with DCOM and even at times activeX components , and the .NET, I would allow it Trusted Server.
    Trusted server will allow it thread in and out of the loopback address (127.0.0.1) and perhaps it will even use the non route address (0.0.0.0). Both are internal addresses of the windows and are not internet related.

    Best regards.
    Oldsod.
    Best regards.
    oldsod

  3. #3
    tasman Guest

    Default Re: What is COM Surrogate

    Oldsod, Thank you for the great explanation.Tasman

  4. #4
    Join Date
    Dec 2005
    Posts
    9,056

    Default Re: What is COM Surrogate

    You are welcome tasman.
    Best regards.
    Oldsod.
    Best regards.
    oldsod

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