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<p class="MsoNormal"><span style="font-size:11.0pt">I am trying to understand if it is possible to NAT between a network running Active Directory (AD) and a network running FreeIPA and have one-way trust from FreeIPA to the AD.<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">My hypothesis is that it is not possible, for two reasons. First, I understand that Kerberos uses several techniques (ip addresses in the protocol, reverse DNS lookups) to make sure there is no "man in the
middle." The proxy is a man in the middle. Second, I understand that FreeIPA retrieves the layout of domain controllers (DC) from the initial AD DC it builds the trust with. The addresses returned are valid in the AD network and are not translated into the
FreeIPA network. FreeIPA will not be able to route to those IP addresses.<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 read about proxying Kerberos protocol over https (<a href="https://web.mit.edu/kerberos/krb5-devel/doc/admin/https.html)">https://web.mit.edu/kerberos/krb5-devel/doc/admin/https.html)</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I have read about proxying LDAP (<a href="https://wiki.samba.org/index.php/OpenLDAP_as_proxy_to_AD)">https://wiki.samba.org/index.php/OpenLDAP_as_proxy_to_AD)</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">I do not know all of the protocols used to operate AD <-> FreeIPA trust, so I'm not sure there is even software available to do such a thing.<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 insight!<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">Dan<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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