About Apache configuration htaccess, how do I disable access to a specified URL or specify a controller?

How do I configure htaccess to disable access to a URL or controller?

Such as:
Abc.com/index.php/admin
or abc.com/admin.php

Because I want to change the backend method address to the defined Abc.com/diy,
and background access and logins only allow access in this way
So to prohibit the original background access address mode

Reply content:

How do I configure htaccess to disable access to a URL or controller?

Such as:
Abc.com/index.php/admin
or abc.com/admin.php

Because I want to change the backend method address to the defined Abc.com/diy,
and background access and logins only allow access in this way
So to prohibit the original background access address mode

In the configuration file to modify the background entrance name is not OK, with what htaccess, the security of this thing is not so high (and just change the form, and will not change the nature). People who know the entrance always know that people who don't know are usually not interested in guessing. Because the URL is random, exhausted combination run for several days just to know the URL? And then exhaust the combination test account and password? Hackers would be so confused if they didn't have the technical content.

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