restrict access

1.etc/apache2/conf-available/phpmyadmin.conf
2. Order Deny,Allow
   Deny from all
   Allow from 192.168.1.0/24
3.service apache2 reload

https://www.bauer-power.net/2012/10/hide-phpmyadmin-and-restrict-access-by.html#.Xm7fUagzZPY