This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
In admin console go to the security page(Security link on the left naviagtion links) and click on Global Security. Check enable Global security. You can also specify your authentication mechanism LDAP,LocalOS etc