Now I don't want to bore you with details why I failed to deploy LDAPS to only some of Domain Controllers and not all of them, but I wanted to give you an easy way to test whether LDAP, LDAPS are available and working. Why would you need it? To quickly check if your DC's work properly after setting it up. And if someone asks you about it two weeks later, you can verify it again without much effort. That way, you can learn from my mistakes and test your LDAPS functionality after you're done implementing.