Specify the name of the LDAP server host name (like ldap.sun.com).
    If your LDAP server uses a port other than 389 (which is the standard for LDAP),
    you can also append a port number here, like ldap.acme.org:1389.
    To connect to LDAP over SSL (AKA LDAPS), specify it with the ldaps:// protocol,
    like ldaps://ldap.acme.org or ldaps://ldap.acme.org:1636 (if
    the port is other than the default 636).