<div dir="ltr"><div><span class="" style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial"><span class="">In the OpenSIPS documentation, I see the following:</span></span></div><span class="" style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial"><i class=""><div><span class="" style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial"><i class=""><br></i></span></div></i></span><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span class="" style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial"><i class="">SSLv23</i></span><span style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial"> </span><span style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial">- means OpenSIPS will accept any of the above methods, but the initial SSL hello must be v2 (in the initial hello all the supported protocols are advertised enabling switching to a higher and more secure version). The initial v2 hello means it will not accept connections from SSLv3 or TLSv1 only clients.</span></blockquote><div><br></div><div>It also says:</div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span style="color:rgb(0,0,0);font-family:Helvetica,Arial;text-align:justify">In fact, SSLv2 is disabled in the source code; to use it, you need to edit tls/tls_init.c</span> </blockquote><div><span style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial"><br></span></div><div><span style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial">Could this be causing:</span></div><div><span style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial"><br></span></div><div><span style="text-align:justify"><blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex" class="gmail_quote"><font color="#000000" face="Helvetica, Arial">139769245963920:error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure:s23_clnt.c:770:</font></blockquote><div style="color:rgb(0,0,0);font-family:Helvetica,Arial"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica,Arial">?  Do I need to enable some SSL setting on my server? I&#39;m using Ubuntu server.</div></span></div><div><span style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial;font-size:medium"><br></span></div><div><span style="text-align:justify;color:rgb(0,0,0);font-family:Helvetica,Arial;font-size:medium"><br></span></div></div>