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Thread: about apps that communicate with themselves using ports

  1. #1
    S Claus
    Guest

    about apps that communicate with themselves using ports

    Hi all

    I have a question about some applications that communicate with
    themselves (or with other modules that are part of the same
    installation and on the same machine) through network ports. So in
    other words the app sends data to a port on the machine that it
    resides on, and another part of the app listens on that port and picks
    up the data.

    Examples of apps doing this include a Python editor, JGroups, etc

    My question pertains to a situation where the machine also has a
    software firewall running on it.

    The question is, are there any cases where this type of communication
    does not go through the firewall?

    Thanks in advance,

  2. #2
    Ansgar -59cobalt- Wiechers
    Guest

    Re: about apps that communicate with themselves using ports

    In comp.security.firewalls S Claus <santa@temporaryinbox.com> wrote:
    > I have a question about some applications that communicate with
    > themselves (or with other modules that are part of the same
    > installation and on the same machine) through network ports. So in
    > other words the app sends data to a port on the machine that it
    > resides on, and another part of the app listens on that port and picks
    > up the data.
    >
    > Examples of apps doing this include a Python editor, JGroups, etc
    >
    > My question pertains to a situation where the machine also has a
    > software firewall running on it.
    >
    > The question is, are there any cases where this type of communication
    > does not go through the firewall?


    Sure. Those cases where you have removed the firewall. On a properly
    configured system you most likely don't need it anyway.

    cu
    59cobalt
    --
    "If a software developer ever believes a rootkit is a necessary part of
    their architecture they should go back and re-architect their solution."
    --Mark Russinovich

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