Here we present an example with Ubuntu, hopefully the added comments are enough to help with other operating systems.
apt-get install libpam-ldap ldap-utls
ldap-utils is recommended, not required.
On the configuration you will need to supply your LDAP URL (with https) and your base DN. You probably will want to allow users to change their passwords (with impact on the LDAP server). The server is not authenticated.
This will change the PAM configuration on /etc/pam.d. It will also change /etc/ldap.conf
If you are using your own certificate authority, you will need to add the certificate of the authority, by changing the TLS_CACERT parameter on /etc/ldap/ldap.conf . Be careful with auto-reconfiguration
And you should be done
(uid limitation - pam_filter)