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).