Hi,

the often used Active Directory source “Active Directory (Integrated Windows Authentication)” is from VMware marked as deprecated.

The recommendation is to use “Active Directory over LDAP”. My current view is that this has some limitions/nuisances:

• You can no longer login with a Active Directory User which is member of the “Protected User Group”
• You have to get the certificate of each LDAPs Server
• If the certificate of the LDAPs Server is changed you have to delete the identity source and recreate it.
• You have to define 2 domain controller which are used for authentification. vSphere can no longer recognize the domain controllers over DNS

I describe the command line way. Make an snapshot of your vCenter to be prepared for a rollback if something goes wrong.

Prerequierments:

• A User with read permissions

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  , vCenter can no longer uses the machine account. In this example QueryUser

• Join the active directory to get an DNS entry

If an (LDAP) Active Directory identity source already exists delete them.

root@myCenter ~ # /opt/vmware/bin/sso-config.sh -get_identity_sources
...
********** IDENTITY SOURCE INFORMATION **********
IdentitySourceName        :  myad.domain.org
DomainType                :  EXTERNAL_DOMAIN
Identity Settings:
  alias                   :  MYAD
  authenticationType      :  PASSWORD
  userBaseDN              :  DC=myad,DC=domain,DC=org
  groupBaseDN             :  DC=myad,DC=domain,DC=org
  username                :  QueryUser@myAD.domain.org
  providerType            :  IDENTITY_STORE_TYPE_LDAP_WITH_AD_MAPPING
  servicePrincipalName    :  placeholder
  useMachineAccount       :  false
  FriendlyName            :  myad.domain.org
  SearchTimeoutInSeconds  :  0
...
Connection Settings:

If configured delete an exiting entry

root@myCenter ~ # /opt/vmware/bin/sso-config.sh 

root@myCenter ~ # /opt/vmware/bin/sso-config.sh -delete_identity_source -i myad.domain.org

Define your AD domain controller, and

root@myCenter ~ # export DOMAIN_CONTROLLER1=dc1.myad.domain.org
root@myCenter ~ # export DOMAIN_CONTROLLER2=dc2.myad.domain.org

Get the AD domain controller LDAP certificates and save it temporarily

root@myCenter ~ # openssl s_client -showcerts -connect ${DOMAIN_CONTROLLER1}:3269 </dev/null 2>/dev/null|openssl x509 -outform PEM > /tmp/${DOMAIN_CONTROLLER1}.cer
root@myCenter ~ # openssl s_client -showcerts -connect ${DOMAIN_CONTROLLER2}:3269 </dev/null 2>/dev/null|openssl x509 -outform PEM > /tmp/${DOMAIN_CONTROLLER2}.cer

Add the identity source. As per documentation the “username” should have the distinguished name format, but user@domain should also work.

root@myCenter ~ # /opt/vmware/bin/sso-config.sh \
-add_identity_source -name "myad.domain.org" \
-type adldap \
-baseUserDN "DC=myad,DC=domain,DC=org" \
-baseGroupDN "DC=myad,DC=domain,DC=org" \
-domain "myad.domain.org" \
-alias "MYAD" \
-username "QueryUser@myAD.domain.org" \
-password 'mySecretPassword' \
-primaryURL "ldaps://$DOMAIN_CONTROLLER1:3269" \
-secondaryURL "ldaps://$DOMAIN_CONTROLLER2:3269" \
-useSSL true \
-sslCert /tmp/$DOMAIN_CONTROLLER1.cer,/tmp/${DOMAIN_CONTROLLER2}.cer

That’s it.

To check the LDAPs certificate locally stored at the vCenter. If these does not match the certificates on the LDAP server authentification would fail.

root@myCenter ~ # /opt/vmware/bin/sso-config.sh -check_ldaps_cert_validation

As described above, authentification will fail if the certificates does not match. There is a registry key in likewise which controls the certificate handling, but not tested yet on how that changes the behaviour.

root@myCenter ~ # /opt/likewise/bin/lwregshell add_value '[HKEY_THIS_MACHINE\Software\VMware\Identity\Configuration]' LdapsCertValidation REG_SZ true
root@myCenter ~ #/opt/likewise/bin/lwregshell set_value '[HKEY_THIS_MACHINE\Software\VMware\Identity\Configuration]' LdapsCertValidation  true

Michael