SSHD configuration file location

I am interested in SSH security configuration and would like to verify my router's settings.

http://inb4.se/blog/2015/01/26/SSH-Configuration-Checklist/

The article suggests checking the configuration file: /etc/ssh/sshd_config

I did see /etc/dropbear but no config file. Is there a file to config dropbear? If not, is there a command to display the configured options found in the article?