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    My thought were as follows<br>
    <br>
    If I could bind all of the internal extensions to an IP address,
    then I can limit the number of extension that are exposed to outside
    attack. So if I open up port 5090 and allow registration from
    internet based phones, I can limit it to only a couple of extensions
    rather than having all extensions open to the outside world.<br>
    <br>
    The purpose of these few extensions is to allow someone in the
    office to transfer a call to someone on the road. They would not be
    given permission to use any of the gateways so even if someone did
    manage to hack in, they&nbsp; would not be able to make long distance
    calls - limit the damage.<br>
    <br>
    Does that make sense? <br>
    <br>
    Regards<br>
    O<br>
    <br>
    On 25/06/12 22:27, Michael Collins wrote:
    <blockquote
cite="mid:CAKzWOxWJuxd+PjBxDmRPa3UNJ6L68xEZotfCKc7HXccg7Jxtvw@mail.gmail.com"
      type="cite"><br>
      <br>
      <div class="gmail_quote">On Mon, Jun 25, 2012 at 2:26 AM, Richard
        Brady <span dir="ltr">&lt;<a moz-do-not-send="true"
            href="mailto:rnbrady@gmail.com" target="_blank">rnbrady@gmail.com</a>&gt;</span>
        wrote:<br>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          Is there an equivalent for gateways?<br>
          <br>
          I can't find a way to bind incoming calls from a CIDR to a
          particular gateway.<br>
          <div class="HOEnZb">
            <div class="h5"><br>
            </div>
          </div>
        </blockquote>
        <div>Just curious - what functionality do you need this for? <br>
          -MC<br>
        </div>
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