Authentication Clarification for Elasticsearch 6+

Sorry, I feel a bit confused.
In our current setup I use 'elastic'/'changeme' to "secure" our stack. Yes, I know, shame on me.

Everything I'm reading now for 6+ says there is no longer a default password and you need to install X-Pack and run through setup-passwords to create built-in user passwords for elasticsearch, kibana and logstash. (As mentioned, I've tried a couple times without success).

Is it possible for me, using a Basic License, to secure my Elasticsearch, Kibana & Logstash using a username and password?