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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">Thanks for the reply and cliffs notes about the setup. My security team has concerns with having port 80 open to facility the Let’s Encrypt process. Documentation
states something about allowing the built in protections without giving much info on what those protections are.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">I would love to be able to set it and forget it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Anthony Holloway <avholloway+cisco-voip@gmail.com>
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<b>Sent:</b> Friday, April 17, 2020 4:23 PM<br>
<b>To:</b> Riley, Sean <SRiley@robinsonbradshaw.com><br>
<b>Cc:</b> cisco-voip@puck.nether.net<br>
<b>Subject:</b> Re: [cisco-voip] Renewing Expressway E Cert<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><strong><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:red">WARNING:
</span></strong><strong><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">External Email
</span></strong><span style="font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal">This might be an unpopular opinion, but I think using the free certs provided by let's encrypt, coupled with it being automatic from now on, it's just an unbeatable combination.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Here are my cliff notes:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Reference Document:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><a href="https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_certificate-creation-use-deployment-guide/exwy_b_certificate-creation-use-deployment-guide_chapter_0100.html"><span style="color:#0563C1">https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_certificate-creation-use-deployment-guide/exwy_b_certificate-creation-use-deployment-guide_chapter_0100.html</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">High Level Steps:<o:p></o:p></span></p>
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<li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Expressway 12.5.7 to avoid ACMEv1 vs ACMEv2 registration issues (<a href="https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr82346"><span style="color:#0563C1">https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvr82346</span></a>)<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">For your Unified CM registrations domains don’t use parent domain only (E.g.,
<a href="http://company.com">company.com</a>), switch to CollabEdgeDNS format instead (E.g.,
<a href="http://collab-edge.company.com">collab-edge.company.com</a>), because you’ll need that in the next step<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">DNS A records for the Expressway-E FQDN and the CM registration domains<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Upload the root and intermediates for Let’s Encrypt (needed on both Expressway-E and Expressway-C) (certs are linked in documentation)<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Enable the ACME client on Expressway-E and supply any email address you want to link to this registration (This creates your account with Let’s
Encrypt)<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Generate a new CSR (Server Certificate Only, Domain Cert Was Not Needed)<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Click button to Submit CSR to ACME<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Click button to Deploy New Certificate on Expressway-E (documentation states this is non-service impacting)<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Setup the automatic scheduler so you never have to deal with this again<o:p></o:p></span></li><li class="MsoNormal" style="mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Sit back, relax and enjoy free shit<o:p></o:p></span></li></ol>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Apr 17, 2020 at 1:43 PM Riley, Sean <<a href="mailto:SRiley@robinsonbradshaw.com">SRiley@robinsonbradshaw.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"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">We had our Cisco partner setup our Expressways a couple of years ago. It is a cluster with 2 E’s and 2 C’s currently
at v 12.5.7 using for MRA. I have been managing them, installing updates, troubleshooting etc. The public Edge cert is up for renewal. Can anyone provide advice on renewing this cert? I am planning on just renewing with the same cert provider, but was
interested in if there is anything to watch out for. Example, will there be a service interruption when replacing the cert? Or just install the new cert/pk and rest easy?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Thanks in advance.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Sean.</span><o:p></o:p></p>
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<p class="MsoNormal">_______________________________________________<br>
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