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<p class="MsoNormal"><span style="font-size:11.0pt">Upgrading to the SP version 3.0.4 did not eliminate our error condition (previously reported as unrecognized entity ID from idp.testshib.org). We are now seeing the error<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">None of the configured SessionInitiators handled the request.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The sequence and metadata for the error requests and the non-error requests are very similar (I dare say identical) with one possible exception.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">In our case, the browser posts to /Shibboleth.sso/SAML2/POST, and is then redirected to a URL protected by mod_shib with the settings<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> AuthType shibboleth<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> ShibRequestSetting requireSession 1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"> require shib-session<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have looked at one pair of examples in detail. Both originate at the same entityID and IDP, one succeeds and one errors. The difference that I see is that in the success case, both the POST and the redirected
request are from the same IP address. In the error case, the IP addresses differ.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Why do the IP addresses differ? Because the request comes through a load balanced gateway that has multiple instances.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">So the questions:<o:p></o:p></span></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:11.0pt">Is this the probable cause of the error?<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="font-size:11.0pt">If so, how do I configure mod_shib or shibd to allow the return request to be from a different IP? Can I limit the request addresses to our VPC address
space but allow any IP within that address space?<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have perused the Shibboleth wiki and haven’t found answers there (yet).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks for any help you can provide.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">--<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">Spencer Thomas<br>
</span></b><span style="font-size:11.0pt">Technical Architect <b>/</b> JSTOR and Artstor<br>
<a href="https://www.ithaka.org/"><span style="color:#0563C1">ITHAKA</span></a> <b>/</b> 301 E. Liberty St, Suite 250, Ann Arbor, MI 48104<br>
Email: <a href="mailto:Spencer.Thomas@ithaka.org"><span style="color:#0563C1">Spencer.Thomas@ithaka.org</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Voicemail: 734-887-7004<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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