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<p class="MsoNormal">Wireshark was missing .<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:FR-CH">From:</span></b><span lang="EN-US" style="mso-fareast-language:FR-CH"> Laurent Schweizer
<br>
<b>Sent:</b> lundi, 26 août 2019 10:25<br>
<b>To:</b> 'Kamailio (SER) - Users Mailing List' <sr-users@lists.kamailio.org><br>
<b>Subject:</b> Kamailio 5.0.8 | authentification issue only with TCP/TLS<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Dear all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">I have a kamailio running in version 5.0.8 and since fee weeks we have an issue with different users connected in TCP or TLS, sometimes authorization like for REGISTER are rejected and after a moment (can be few minute
or hours) it work again and of course no change was done in the password ….<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">We see this issue with different device, snom swyx, … and on UDP we have no issue.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I can see that when the Register is rejected it’s with the error -2, so wrong password…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"># Authentication route<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">route[AUTH] {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> if (is_method("REGISTER"))<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> # authenticate requests<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> if (!auth_check("$fd", "subscriber", "1")) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> switch($retcode) {<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> case -1:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> sl_send_reply("503","Service not available");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> exit;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> case -2:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> xlog("L_WARN", "auth error -2 username $au - src ip: $si \n");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> auth_challenge("$fd", "0");<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> exit;<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have attached an example of a trace where we can see a first REGISTER accepted and less than 2 minutes after a new one is rejected. ( in between they is a REGISTER without any Authorization header)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any idea ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">BR<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Laurent<o:p></o:p></span></p>
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