[Samba] Samba4 + external ldap

[Elias Pereira]

Hello,

- I have a server with ldap (debian 7).
- I have another server with samba (freebsd 8).

I want to set up a new samba server in a debian.

My question is:

In addition to the default Samba configuration, which other packages have
to install on the new server to communicate with the ldap?

Note: I researched a lot about how to configure a Samba server with an
external ldap, but all the links of the research were on the samba and ldap
on the same server.