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<p class="MsoNormal"><span style="color:#1F497D">If indeed you mean ALL traffic, including traffic that Kamailio itself can route internally:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Add something to the LOCATION route to only allow usrloc based routing from the media server. In my case, I have added this at the top:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"># Only do this for things authorized by IP<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"># UAs need to go via billing platform<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D">if (!allow_source_address()) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> return;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Create a new route that is called at the end of your main route with something like the following:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"># Routing to Billing<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D">route[BILLING] {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> # only local users allowed to call<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> if (from_uri!=myself) {<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> sl_send_reply("403", "Not Allowed");<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> exit;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> }<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> $ru = "sip:" + $rU + "@1.2.3.4:5060”);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> route(RELAY);<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D"> exit;<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New",serif;color:#1F497D">}<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">In essence, block all but allowed IPs (your media gateway IPs should be allowed) from routing via usrloc and change the request URI to route all traffic via the media gateway IP (1.2.3.4).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="color:black;mso-fareast-language:EN-GB">Phil</span><span style="font-size:7.5pt;color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:EN-GB">From:</span></b><span lang="EN-US" style="mso-fareast-language:EN-GB"> sr-users [mailto:sr-users-bounces@lists.sip-router.org]
<b>On Behalf Of </b>alexandre.anconetti@orange.com<br>
<b>Sent:</b> 01 February 2016 13:24<br>
<b>To:</b> sr-users@lists.sip-router.org<br>
<b>Subject:</b> [SR-Users] Kamailio/How to send all requests ?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hello !<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m using Kamailio for 2 months, and I have a problem with the routing logic.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My aim is to use 2 Kamailio servers (in a cluster, so I have a primary and a backup server with a Virtual IP that can switch between the 2 servers) working with 2 medias servers (same as above, a primary and a backup).
The Kamailio servers are here to handle failover, so all the requests go through them, and then are sent to the active media server.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">My question is : Which module(s) should I load to transmit all the requests (including registers) to my media server, through the Kamailio server ? Any particular parameters ? Then, what will be in the “request_route”
? <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’m using Kamailio 4.3.4.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Alexandre<o:p></o:p></span></p>
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