<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:Helvetica;
panose-1:2 11 6 4 2 2 2 2 2 4;}
@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:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.E-MailFormatvorlage18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
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="DE" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">not sure why you think that the ims_ipsec_pcscf module is listening only on UDP. It seems to be also listening on TCP:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> //add listen interfaces for IPv4<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> if(add_listen_iface(addr4, NULL, ipsec_client_port + i, PROTO_TCP, 0) != 0) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> LM_ERR("Error adding listen ipsec client TCP interface for IPv4\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> return -1;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> if(add_listen_iface(addr4, NULL, ipsec_server_port + i, PROTO_TCP, 0) != 0) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> LM_ERR("Error adding listen ipsec server TCP interface for IPv4\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> return -1;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> if(add_listen_iface(addr4, NULL, ipsec_client_port + i, PROTO_UDP, 0) != 0) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> LM_ERR("Error adding listen ipsec client UDP interface for IPv4\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> return -1;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> if(add_listen_iface(addr4, NULL, ipsec_server_port + i, PROTO_UDP, 0) != 0) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> LM_ERR("Error adding listen ipsec server UDP interface for IPv4\n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> return -1;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">-- <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Henning Westerholt –
</span><span style="mso-fareast-language:EN-US"><a href="https://skalatan.de/blog/"><span lang="EN-GB" style="color:#0563C1">https://skalatan.de/blog/</span></a></span><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Kamailio services –
</span><span style="mso-fareast-language:EN-US"><a href="https://gilawa.com/"><span lang="EN-GB" style="color:#0563C1">https://gilawa.com</span></a></span><span style="mso-fareast-language:EN-US">
<span lang="EN-GB"><o:p></o:p></span></span></p>
</div>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:35.4pt"><b>From:</b> sr-users <sr-users-bounces@lists.kamailio.org>
<b>On Behalf Of </b>H Yavari<br>
<b>Sent:</b> Thursday, May 20, 2021 3:01 AM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org><br>
<b>Subject:</b> [SR-Users] IMS IPSec does use UDP socket?<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Hi to all,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">I am interested in the implementation of IPsec module. When I run Kamailio, it is creating processes based on the below formulate:<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">UDP children * IPSEC_MAX_CONN * interfaces (v4 and v6) + (TCP+UD) processes for each interface.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">For example: <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">children = 16<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">tcp_children=16<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">IPSEC_MAX_CONN = 25</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">and two interface : IPv6 and V4<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black">Kamailio process count = (16 * 25 * 2 ) + 16 + 16 = 832</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">But why IPsec module is listening to UDP not TCP? this is an internal connection?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Thank you.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Regards,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Hossein<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-left:35.4pt"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
</div>
</div>
</div>
</body>
</html>