<div dir="ltr">On Mon, Feb 8, 2016 at 11:53 PM, Sumit Bose <<a href="mailto:sbose@redhat.com" target="_blank">sbose@redhat.com</a>> wrote: <div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class=""><div class="h5">On Thu, Feb 04, 2016 at 07:25:29PM +1100, Nik Lam wrote: > On Wed, Feb 3, 2016 at 8:08 PM, Sumit Bose <<a href="mailto:sbose@redhat.com">sbose@redhat.com</a>> wrote: > > > On Wed, Feb 03, 2016 at 10:29:49AM +1100, Nik Lam wrote: > > > Hello, > > > > > > I installed ipa-server on Centos 7.1 and later did and upgrade of the > > whole > > > system to Centos 7.2. > > > > > > I think the FreeIPA version changed from 4.1.0 to 4.2.0 between these > > > Centos/RHEL minor releases. > > > > > > We'd now like to try integrating with a 2FA provider via a radius proxy > > and > > > want to use anonymous PKINIT to secure the initial communications between > > > the client and the KDC. > > > > > > We've tried following the MIT Kerberos PKINIT configuration documentation > > > > > > <a href="http://web.mit.edu/kerberos/krb5-1.14/doc/admin/pkinit.html" rel="noreferrer" target="_blank">http://web.mit.edu/kerberos/krb5-1.14/doc/admin/pkinit.html</a> > > > > > > generating our own certs manually with openssl but haven't had any luck. > > > We're seeing this in the kdc log: > > > > > > preauth pkinit failed to initialize: No realms configured correctly > > for > > > pkinit support > > > > Which changes did you apply to krb5.conf? Did you use the IPA CA to sign > > the certificate or some other CA? > > > > > > > > I've noticed there are many new pkinit-related options that have been > > added > > > to the ipa-server-install script in 4.2.0, so it looks like PKINIT is > > > available in this version of FreeIPA. Is that the case? > > > > Which options are you referring to? > > > > bye, > > Sumit > > > > > > > > And if it is, what is the recommended way to enable it given that it > > seems > > > to have been disabled in the original install that I did? Or would it > > just > > > be easier to start from scratch with a 4.2.0 ipa-server-install? (It's a > > > test instance that doesn't have too much in it - it will take a several > > > hours to rebuild from scratch.) > > > > > > Regards, > > > > > > Nik > > > > > > > Thanks Sumit. > > It sounds like PKINIT is available but clearly I'm doing it wrong. > > > Which changes did you apply to krb5.conf? Did you use the IPA CA to sign > the certificate or some other CA? > > Actually, I modified the kdc.conf file - placed the kdc.pem, kdckey.pem and > cacert.pem files in /var/kerberos/krb5kdc/ that I generated via openssl > commands in the MIT Kerberos documentation. The only change to kdc.conf > file was to append the location of the kdckey.pem file to pkinit_identity. > > pkinit_identity = FILE:/var/kerberos/krb5kdc/kdc.pem > pkinit_anchors = FILE:/var/kerberos/krb5kdc/cacert.pem > > became > > pkinit_identity = > FILE:/var/kerberos/krb5kdc/kdc.pem,/var/kerberos/krb5kdc/kdckey.pem > pkinit_anchors = FILE:/var/kerberos/krb5kdc/cacert.pem > > Should I have been modifying krb5.conf instead? It aslo sounds like I need </div></div>no, kdc.conf is the right place, I actually meant kdc.conf but accidentially types krb5.conf. > to use a certificate signed by the IPAs CA - is this something that should > be generated using ipa-getcert? Or do I just find the IPA CA's private key > and use openssl following the MIT Kerberos documentation? > > > Which options are you referring to? > > When I looked at the --help text for 4.1.0 and 4.2.0 versions of > ipa-server-install, I noticed that 4.2.0 has these in the "certificate > system options": > > --no-pkinit disables pkinit setup steps > > --pkinit-cert-file=FILE > File containing the Kerberos KDC SSL certificate and > private key > > --pkinit-pin=PIN The password to unlock the Kerberos KDC private key > > --pkinit-cert-name=NAME > Name of the Kerberos KDC SSL certificate to install > > > Seeing that first one, I was a little hopeful that pkinit is enabled by > default in 4.2.0 but on a fresh install I just tried, I'm still seeing the no, unfortunately pkinit is currently disabled by default > following in krb5kdc.log when IPA is started up, so clearly it isn't. > > (Error): preauth pkinit failed to initialize: No realms configured > correctly for pkinit support I get the same error when I put the certificate and the key into separate files. Can you try to put both into one and use this for the pkinit_identity option? HTH bye, Sumit </blockquote><div> <div> </div><div>Thanks Sumit, it did! </div><div>I concatenated the cert and the key into a single file and the error has indeed gone away from krb5kdc.log </div>The odd thing is that I can't reproduce the error by splitting into two separate files and restarting ipa.service again. Ignoring that mystery, how do I go about setting up the WELLKNOWN/ANONYMOUS principal? I'm pretty sure it's needed for anonymous pkinit: </div><div>$ kinit kinit: Generic preauthentication failure while getting initial credentials $ </div><div> </div>$ kinit -n kinit: Client 'WELLKNOWN/<a href="mailto:ANONYMOUS@EXAMPLE.COM">ANONYMOUS@EXAMPLE.COM</a>' not found in Kerberos database while getting initial credentials $ Using kadmin per the MIT documentation doesn't seem to work (authenticated as an IPA admin) # kadmin -q 'addprinc -randkey WELLKNOWN/ANONYMOUS' Authenticating as principal admin/<a href="mailto:admin@EXAMPLE.COM">admin@EXAMPLE.COM</a> with password. kadmin: Client not found in Kerberos database while initializing kadmin interface # # kadmin -q 'addprinc -randkey WELLKNOWN/ANONYMOUS' -p admin Authenticating as principal admin with password. Password for <a href="mailto:admin@EXAMPLE.COM">admin@EXAMPLE.COM</a>: WARNING: no policy specified for WELLKNOWN/<a href="mailto:ANONYMOUS@EXAMPLE.COM">ANONYMOUS@EXAMPLE.COM</a>; defaulting to no policy add_principal: Operation requires ``add'' privilege while creating "WELLKNOWN/<a href="mailto:ANONYMOUS@EXAMPLE.COM">ANONYMOUS@EXAMPLE.COM</a>". # </div><div class="gmail_quote">Regards, </div><div class="gmail_quote">Nik </div><div class="gmail_quote"> </div></div></div>