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    <div class="moz-cite-prefix">I don't know what platform you are on,
      but if you are on Linux (and possibly BSD) you could use
      "fail2ban" to block them at the network interface.<br>
      <br>
      On 04/04/2014 09:00 AM, motty cruz wrote:<br>
    </div>
    <blockquote
cite="mid:CALoOYy49T96jz1ipsbtUyYAe-+0h5KnzbaLSXuRCroiFgmOAcA@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hello All, my asterisk server is constantly under
        attack
        <div><br>
          [Apr  4 06:56:00] NOTICE[21745]: chan_sip.c:25673
          handle_request_register: Registration from '"4941"
          <sip:4941@public_ip>' failed for '<span
            class="skype_c2c_print_container">194.100.46.132</span><span
            class="skype_c2c_container" dir="ltr" tabindex="-1"
            onmouseover="SkypeClick2Call.MenuInjectionHandler.showMenu(this,
            event)"
            onmouseout="SkypeClick2Call.MenuInjectionHandler.hideMenu(event)"><span
              class="skype_c2c_highlighting_inactive_common" dir="ltr"><span
                class="skype_c2c_textarea_span"><img
                  moz-do-not-send="true" class="skype_c2c_logo_img"
src="resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png"><span
                  class="skype_c2c_text_span">194.100.46.132</span><span
                  class="skype_c2c_free_text_span"></span></span></span></span>:56714'
          - Wrong password<br>
          [Apr  4 06:56:00] NOTICE[21745]: chan_sip.c:25673
          handle_request_register: Registration from '"4941"
          <sip:4941@public_ip>' failed for '<span
            class="skype_c2c_print_container">194.100.46.132</span><span
            class="skype_c2c_container" dir="ltr" tabindex="-1"
            onmouseover="SkypeClick2Call.MenuInjectionHandler.showMenu(this,
            event)"
            onmouseout="SkypeClick2Call.MenuInjectionHandler.hideMenu(event)"><span
              class="skype_c2c_highlighting_inactive_common" dir="ltr"><span
                class="skype_c2c_textarea_span"><img
                  moz-do-not-send="true" class="skype_c2c_logo_img"
src="resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png"><span
                  class="skype_c2c_text_span">194.100.46.132</span><span
                  class="skype_c2c_free_text_span"></span></span></span></span>:56714'
          - Wrong password<br>
          [Apr  4 06:56:00] NOTICE[21745]: chan_sip.c:25673
          handle_request_register: Registration from '"4941"
          <sip:4941@public_ip>' failed for '<span
            class="skype_c2c_print_container">194.100.46.132</span><span
            class="skype_c2c_container" dir="ltr" tabindex="-1"
            onmouseover="SkypeClick2Call.MenuInjectionHandler.showMenu(this,
            event)"
            onmouseout="SkypeClick2Call.MenuInjectionHandler.hideMenu(event)"><span
              class="skype_c2c_highlighting_inactive_common" dir="ltr"><span
                class="skype_c2c_textarea_span"><img
                  moz-do-not-send="true" class="skype_c2c_logo_img"
src="resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png"><span
                  class="skype_c2c_text_span">194.100.46.132</span><span
                  class="skype_c2c_free_text_span"></span></span></span></span>:56714'
          - Wrong password<br>
          [Apr  4 06:56:00] NOTICE[21745]: chan_sip.c:25673
          handle_request_register: Registration from '"4941"
          <sip:4941@public_ip>' failed for '<span
            class="skype_c2c_print_container">194.100.46.132</span><span
            class="skype_c2c_container" dir="ltr" tabindex="-1"
            onmouseover="SkypeClick2Call.MenuInjectionHandler.showMenu(this,
            event)"
            onmouseout="SkypeClick2Call.MenuInjectionHandler.hideMenu(event)"><span
              class="skype_c2c_highlighting_inactive_common" dir="ltr"><span
                class="skype_c2c_textarea_span"><img
                  moz-do-not-send="true" class="skype_c2c_logo_img"
src="resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png"><span
                  class="skype_c2c_text_span">194.100.46.132</span><span
                  class="skype_c2c_free_text_span"></span></span></span></span>:56714'
          - Wrong password<br>
          [Apr  4 06:56:00] NOTICE[21745]: chan_sip.c:25673
          handle_request_register: Registration from '"4941"
          <sip:4941@public_ip>' failed for '<span
            class="skype_c2c_print_container">194.100.46.132</span><span
            class="skype_c2c_container" dir="ltr" tabindex="-1"
            onmouseover="SkypeClick2Call.MenuInjectionHandler.showMenu(this,
            event)"
            onmouseout="SkypeClick2Call.MenuInjectionHandler.hideMenu(event)"><span
              class="skype_c2c_highlighting_inactive_common" dir="ltr"><span
                class="skype_c2c_textarea_span"><img
                  moz-do-not-send="true" class="skype_c2c_logo_img"
src="resource://skype_ff_extension-at-jetpack/skype_ff_extension/data/call_skype_logo.png"><span
                  class="skype_c2c_text_span">194.100.46.132</span><span
                  class="skype_c2c_free_text_span"></span></span></span></span>:56714'
          - Wrong password<br>
          <br>
        </div>
        <div>is there a way to reject their registration after a three
          consecutive tries? <br>
        </div>
        <div><br>
        </div>
        <div>Thanks, <br>
        </div>
        <div
          onmouseout="SkypeClick2Call.MenuInjectionHandler.hideMenu(event)"
          onmouseover="SkypeClick2Call.MenuInjectionHandler.showMenu(this,
          event)" style="" id="skype_c2c_menu_container"
          class="skype_c2c_menu_container">
          <div class="skype_c2c_menu_click2call"><a
              moz-do-not-send="true"
              id="skype_c2c_menu_click2call_action"
              class="skype_c2c_menu_click2call_action">Call</a></div>
          <div class="skype_c2c_menu_click2sms"><a
              moz-do-not-send="true"
              id="skype_c2c_menu_click2sms_action"
              class="skype_c2c_menu_click2sms_action">Send SMS</a></div>
          <div class="skype_c2c_menu_add2skype"><a
              moz-do-not-send="true" id="skype_c2c_menu_add2skype_text"
              class="skype_c2c_menu_add2skype_text">Add to Skype</a></div>
          <div class="skype_c2c_menu_toll_info"><span
              class="skype_c2c_menu_toll_callcredit">You'll need Skype
              Credit</span><span class="skype_c2c_menu_toll_free">Free
              via Skype</span></div>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
    </blockquote>
    <br>
    <br>
    <pre class="moz-signature" cols="72">-- 
Daniel Taylor          VP Operations            Vocal Laboratories, Inc.
<a class="moz-txt-link-abbreviated" href="mailto:dtaylor@vocalabs.com">dtaylor@vocalabs.com</a>   <a class="moz-txt-link-freetext" href="http://www.vocalabs.com/">http://www.vocalabs.com/</a>            (612)235-5711
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