<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>SIP and NAT without proxy or a NAT aware app is a no starter. SIP is a great protocol until you get a NAT firewall in the middle. Even if you manage to get your IP correctly registered the RPT (UDP protocol that carries the voice packets) will still be broken.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> So unless you have control of your work firewall (or a vpn to your home network from your phone) don’t even try. It will be a very painful and futile experience. You may have better luck with an IAX client.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> app_rpt-users-bounces@ohnosec.org [mailto:app_rpt-users-bounces@ohnosec.org] <b>On Behalf Of </b>Robert Newberry<br><b>Sent:</b> Friday, June 20, 2014 1:20 PM<br><b>To:</b> app_rpt-users@ohnosec.org<br><b>Subject:</b> [App_rpt-users] Zoiper registering problems<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><div><div><div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'>I can register my SIP zoiper account from my home wifi and LTE. At work on the WiFi I can not register, but if I turn off WiFi the SIP account will register on LTE.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>I watched the CLI and I think I see the problem, but don't quite understand how to fix it and maybe someone can help. Here is what I get.<br><br><br> -- Registered SIP '7252' at 70.XXX.X.XX port 4446 expires 60<br>[Jun 20 13:04:48] NOTICE[2177]: chan_sip.c:12758 handle_response_peerpoke: Peer '7252' is now Reachable. (199ms / 2000ms)<br> <br><br> -- Registered SIP '7252' at 192.168.125.104 port 49121 expires 60<br> -- Unregistered SIP '7252'<br>[Jun 20 13:05:51] NOTICE[2177]: chan_sip.c:16258 sip_poke_noanswer: Peer '7252' is now UNREACHABLE! Last qualify: 0<br> -- Registered SIP '7252' at 192.168.125.104 port 49121 expires 60<br> -- Unregistered SIP '7252'<br> -- Registered SIP '7252' at 192.168.125.104 port 49121 expires 60<br>[Jun 20 13:06:00] NOTICE[2177]: chan_sip.c:16258 sip_poke_noanswer: Peer '7252' is now UNREACHABLE! Last qualify: 0<br>N1XBM*CLI><o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>It looks like when I register on LTE it shows my actual IP address and then pokes me and deems me "reachable".<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>When I connect using WiFi I'm connecting but when it tries to poke me its using an IP that's private and behind me firewall. Also from my phone I show a time out and a 408 error for time out.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>I also took it a step further and installed zoiper on my laptop and connected to the same WiFi and my laptop connects and shows the IP address of my actually cable modem.<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>Very confused, if anyone can help I would appreciate it.<o:p></o:p></p></div><p class=MsoNormal>Thank you<o:p></o:p></p></div></div></body></html>