In ELK 6.5, by using SSL certificate only, we can access different ELK components.
When I tried using ELK 7.10 (X-pack or security stuff), it starts using account, password, and SSL certificate. Is it normal for ELK to have such changes between 6.5 and 7.10? When is the version change started ?

I tried searching on stack overflow, but found no answers.