Liferay - Common LDAP Configuration attributes for portal-ext.properties

In portal-ext.properties file add following entries.

### Common LDAP Properties

ldap.auth.enabled=true
#LDAP Auth Req on Login.
ldap.auth.required=true
#Enable automatic LDAP Export
ldap.export.enabled=true
#Enable automatic LDAP import
ldap.import.enabled=true
ldap.import.on.startup=true
ldap.import.interval=10
ldap.import.method=user
ldap.server.ids=1