<html>
  <head>
    <meta content="text/html; charset=ISO-8859-1"
      http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    <div class="moz-cite-prefix">On 01/19/2014 08:40 AM, Steve Murphy
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAPPCp8FRV6oe1Nokv-ecT4sYGc9qzh2KkqxAkB_g9b+0iQYPYw@mail.gmail.com"
      type="cite">
      <div dir="ltr"><br>
        <div class="gmail_extra">
          <div class="gmail_quote">
            <div class="gmail_default" style="font-family:courier
              new,monospace;display:inline">
              <div class="gmail_default" style="font-family:courier
                new,monospace">Here's another idea! How about changing
                your port from 5060 to something<br>
              </div>
              <div class="gmail_default" style="font-family:courier
                new,monospace">different, maybe 7067 or some other
                number that is not popularly being used?<br>
              </div>
              <div class="gmail_default" style="font-family:courier
                new,monospace">
                You'll provision your phones to use this port, and the
                scanners will not<br>
              </div>
              <div class="gmail_default" style="font-family:courier
                new,monospace">find you. Seems a much simpler
                solution... but there are some drawbacks...<br>
              </div>
              <div class="gmail_default" style="font-family:courier
                new,monospace">can anyone think of them? And will these
                drawbacks matter to you? And, given<br>
              </div>
              <div class="gmail_default" style="font-family:courier
                new,monospace">
                this solution, will the odds that a scanner might find
                your machine be so low,<br>
                that it is not worth using something like fail2ban to
                override them? Food<br>
                for thought!<br>
              </div>
              <div class="gmail_default" style="font-family:courier
                new,monospace">
                <br>
              </div>
              <div dir="ltr">murf<br>
              </div>
            </div>
          </div>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
    </blockquote>
    <br>
    We use this tactic.  I never seen scanners in my logs anymore. 
    Haven't had any issues with it to date... we use Linksys, Polycom,
    Yealink, Grandstream, and Audiocodes products.  All have the ability
    to specify the registration port.<br>
    <br>
    Cheers,<br>
    <br>
    j<br>
  </body>
</html>