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<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">I have also not used it in a project yet. But this document might be helpful:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><a href="https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt">https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt</a><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">The HAProxy will use this protocol to convey the original IP information from its side to the Kamailio behind it.<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>
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<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><b>From:</b> Joey Golan <joeygo@gmail.com>
<br>
<b>Sent:</b> Saturday, November 14, 2020 7:35 AM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>; Henning Westerholt <hw@skalatan.de><br>
<b>Subject:</b> RE: [SR-Users] Kamailio behind HAProxy<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">Hi Henning,<br>
I understand the idea behind this but still don’t understand how to use it.<br>
Any ideas?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:35.4pt">On 11 Nov 2020, 15:24 +0200, Henning Westerholt <<a href="mailto:hw@skalatan.de">hw@skalatan.de</a>>, wrote:<br>
<br>
<o:p></o:p></p>
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<span style="mso-fareast-language:EN-US">Hello,</span><o:p></o:p></p>
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<span style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US">bascially this allows Kamailio to understand the HAProxy protocol to be used behind this particular proxy. Some discussion can be found at the list and also at
<a href="https://github.com/kamailio/kamailio/pull/1765">https://github.com/kamailio/kamailio/pull/1765</a></span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US">Cheers,</span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US">Henning</span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US">--</span><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US">Henning Westerholt –</span><span lang="EN-GB">
</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><o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US">Kamailio services –</span><span lang="EN-GB">
</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>
<o:p></o:p></p>
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<span lang="EN-GB" style="mso-fareast-language:EN-US"> </span><o:p></o:p></p>
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<b>From:</b> sr-users <<a href="mailto:sr-users-bounces@lists.kamailio.org">sr-users-bounces@lists.kamailio.org</a>>
<b>On Behalf Of</b> Joey Golan<br>
<b>Sent:</b> Wednesday, November 11, 2020 1:47 PM<br>
<b>To:</b> Kamailio (SER) - Users Mailing List <<a href="mailto:sr-users@lists.kamailio.org">sr-users@lists.kamailio.org</a>><br>
<b>Subject:</b> Re: [SR-Users] Kamailio behind HAProxy<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
Thanks Sergey.<br>
<br>
Can anyone please explain how and why to use tcp_accept_haproxy?<o:p></o:p></p>
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On 11 Nov 2020, 10:39 +0200, Sergey Safarov <<a href="mailto:s.safarov@gmail.com">s.safarov@gmail.com</a>>, wrote:<o:p></o:p></p>
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Now I not use pike.<o:p></o:p></p>
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<o:p></o:p></p>
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On Wed, Nov 11, 2020 at 10:21 AM Joey Golan <<a href="mailto:joeygo@gmail.com">joeygo@gmail.com</a>> wrote:<o:p></o:p></p>
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So on your AWS deployment are you working without ANTIFLOOD(pike)?<br>
<br>
I still don’t understand how and why to use tcp_accept_haproxy.<o:p></o:p></p>
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On 9 Nov 2020, 11:49 +0200, Sergey Safarov <<a href="mailto:s.safarov@gmail.com" target="_blank">s.safarov@gmail.com</a>>, wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
In AWS I now use the network load balancer without enabled HAproxy protocol.<o:p></o:p></p>
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On EC2 instances used two ENI.<o:p></o:p></p>
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First for traffic via NLB for Inbound traffic.<o:p></o:p></p>
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And second ENI for outbound traffic.<o:p></o:p></p>
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<o:p></o:p></p>
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This works but, maybe complex to implement.<o:p></o:p></p>
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<o:p></o:p></p>
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Now I looking to:<o:p></o:p></p>
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1) enable TCP + HAproxy protocol support in Kamailio;<o:p></o:p></p>
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2) add UDP + HAproxy protocol feature support;<o:p></o:p></p>
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3) add connection support "with" and "without" HAproxy protocol.<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
But I am not a developer and cannot say when it implemented.<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
If your usage case, is business requirements and need extended HAproxy implementation in Kamailio, then your company can hire devs from the community.<o:p></o:p></p>
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<o:p></o:p></p>
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<o:p></o:p></p>
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On Mon, Nov 9, 2020 at 11:22 AM Joey Golan <<a href="mailto:joeygo@gmail.com" target="_blank">joeygo@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:70.8pt">
Maybe I miss understood you.<br>
For local installations you mean HAProxy with transparent mode?<br>
<br>
I have a functioning setup without proxy protocol enabled but without anitflood enabled because all traffic comes from same HAProxy address.<br>
<br>
I’m not sure I understand the purpose of tcp_accept_haproxy. When and how this parameter should be used?<br>
<br>
Thanks,<br>
Joey.<o:p></o:p></p>
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On 9 Nov 2020, 0:27 +0200, Sergey Safarov <<a href="mailto:s.safarov@gmail.com" target="_blank">s.safarov@gmail.com</a>>, wrote:<o:p></o:p></p>
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Why you cannot use this in the local installation?<o:p></o:p></p>
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<o:p></o:p></p>
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On AWS I have multiple kamailio servers behind ELB.<o:p></o:p></p>
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<o:p></o:p></p>
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Why you do not use a network load-balancer? NLB also offers HAproxy protocol support (TCP and UDP).<o:p></o:p></p>
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<o:p></o:p></p>
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In AWS installation you can use dedicated Kamailio groups for inbound connections and SIP clients with registration.<o:p></o:p></p>
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And use other Kamailio group for outbound connections like carriers.<o:p></o:p></p>
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<br>
Sergey<o:p></o:p></p>
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<o:p></o:p></p>
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On Sun, Nov 8, 2020 at 9:07 PM Joey Golan <<a href="mailto:joeygo@gmail.com" target="_blank">joeygo@gmail.com</a>> wrote:<o:p></o:p></p>
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It doesn’t make much sense to me. <br>
On local installations (on-premise) I have 1 HAProxy and multiple kamailio servers.<br>
On AWS I have multiple kamailio servers behind ELB.<o:p></o:p></p>
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On 8 Nov 2020, 19:45 +0200, Sergey Safarov <<a href="mailto:s.safarov@gmail.com" target="_blank">s.safarov@gmail.com</a>>, wrote:<o:p></o:p></p>
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you can try place haproxy + NAT on your own Linux router.<o:p></o:p></p>
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In this case inbound connections with be delivered via HAproxy.<br>
Outbound connections will be NAT-ed on the same host, to the same IP.<o:p></o:p></p>
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<o:p></o:p></p>
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On Sun, Nov 8, 2020 at 6:31 PM Joey Golan <<a href="mailto:joeygo@gmail.com" target="_blank">joeygo@gmail.com</a>> wrote:<o:p></o:p></p>
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Hello,<br>
I have a kamailio server running behind HAProxy with proxy protocol v2 enabled.<br>
In Kamailio I have set the parameter tcp_accept_haproxy=yes and loaded tcpops module.<br>
UEs are registered using TLS and kamailio sees that the message has received from their real ip address + port and not HAProxy ip + port.<br>
When UE A calls UE B, kamailio is trying to reach UE B using his real ip address and port instead of HAProxy IP address + port.<br>
<br>
I know I can get the tcp ip and port of HAProxy using $tcp(c_si) and $tcp(c_sp) but I can’t make it work.<br>
What is the right way to do this? How should I use these variables properly in order to establish the call successfully?<br>
<br>
Thanks,<br>
Joey.<o:p></o:p></p>
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