How to secure phpmyadmin?

now if anyone can access phpmyadmin with ipserver/phpMyAdmin

Just user can login to cwp can access phpmyadmin.

How to secure it?

phpMyAdmin has its own login.

You can go to:
Apache settings - Apache redirects (and remove the ones you don't want to have)

But the ones you want are stored on:
/usr/local/apache/conf.d/domain-redirects.conf

Just change the redirect urls if you feel more secure
But remember, after you change it, your PhpMyAdmin option on your server is not going to work anymore

phpmyadmin has own login so you don't have to worry. Just don't share your login details to CPpanel and everything will be fine.