UCS 5 in two networks, ldapsearch access


newbie question:
I have an UCS installation which operates in two networks, one is public, one is internal (10.x). ldapsearch requests come from the internal side, But I can only perform ldapsearch on the public side.

What is the correct place to configure the openldap service so that the ldap ports are available on the internal side? A simple global configuration of a second network for UCS is not enough, I still dont see the ldap ports on the internal network …