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<span style="font-family:"Arial",sans-serif;color:#333333">Hi Gents,<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">I'm implementing Expressway C and E version 8.5.2 for MRA and i have the following client setup :<o:p></o:p></span></p>
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<span style="font-family:"Arial",sans-serif;color:#333333">- Split horizon DNS.<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- 2 domains as follows, Internal: domainX.local and external: domainX.com<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- All UC servers are joining the internal domain, CUCM.domainX.local, IM&P.doaminX.local, CUC.domainX.local,....etc.<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- Client has both local certificate authority (CA) to locally sign his servers certificates and also registered to public CA to sign his public servers certificates.<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- I have EXP-C and EXP-E to enable the Mobile Remote Access for Jabber clients from outside.<o:p></o:p></span></p>
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<span style="font-family:"Arial",sans-serif;color:#333333">I'm able to make the EXP-C either on internal domainX.local or external domainX.com and for sure the EXP-E on the DMZ will be on the domainX.com as it will be a public and will be accessed from internet.<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333"><o:p> </o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">my question is, should i place the EXP-C in the domainX.local (internal) or domainX.com (external) for the setup to work?<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">I have the following concerns in this regard:<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- If i placed the EXP-C in the external domainX.com, will its communication with the internal UC servers which are all in the internal domain be okay ? and will the certificate trust relation with all
UC servers and relation with the EXP-E will be fine?<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- If i placed the EXP-C in the internal will the certificate trust relation with all UC servers and relation with the EXP-E will be fine?<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- is it possible to have EXP-C certificates signed by local CA while the EXP-E certificates will be signed by public CA ? will it be okay?<o:p></o:p></span></p>
<p style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in;line-height:15.0pt;outline: none;orphans: auto;text-align:start;widows: 1;-webkit-text-stroke-width: 0px;word-spacing:0px">
<span style="font-family:"Arial",sans-serif;color:#333333">- is the "Unified CM phone security profile names" as a part of the data to be entered when generating the CSR in the EXP-C mandatory ? i mean do i have to use TLS for phones through this security profile
or I can just enable the non-secure phone profile without TLS, and if i can use the non-secure phone profile, do i have to enter this field when generating the EXP-C CSR or can I leave it blank ?<o:p></o:p></span></p>
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<span style="font-family:"Arial",sans-serif;color:#333333">If any on have a working setup kindly brief me about it specially the domains and certificates parts.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#383E4C">Best Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:#1F497D"> </span><span style="font-family:"Verdana",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:1.0pt"><span style="font-family:"Verdana Bold";color:#383E4C">Ahmed Abd EL-Rahman<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:1.0pt"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#383E4C">Senior Network Engineer</span><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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