How-to: apex LDAP authentication for dummies

Here is tree very simple steps to authenticate users of your Apex application using their AD accounts.
   1. Ask your LDAP administrator to create directory (a group) and give to you

• DN String for this group
• ip address and port (probably, 389) address of AD server

   2. Go to Home>Application Builder>Application 106>Shared Components>Authentication Schemes>Create Authentication Scheme

• choose "From scratch" and enter any name, open it for editing
• fill it with info from your admin, adding left to DN stiring this: "CN=%LDAP_USER%,"

   3. Test it

Links:
OTN1
OTN2
How-To Document (oracle.com)
apache directory studio (to browse AD)