How to deny access to a directory other than a specific one?

Question

htaccess

The proxy folder contains a browse.php file and a few other files.
It is necessary that the user can go to site.ru/proxy/browse.php.
BUT deny access to other directories, for example:
site.ru/proxy
site.ru/proxy/admin
site.ru/proxy/plugins/live.com.php
etc.

Answer 1

Here is the solution to
not use the deny from prohibition, but only the redirection of
all folders will become forbidden, so that for example / css folders should be left in the .htaccess folder
and set RewriteEngine off in it - the entire folder is available
RewriteRule ^(.*)$ index.php [L ] // redirects all requests to the index
RewriteRule ^([^.]+)$ /proxy/browse.php [L] // disable specific file redirection (i.e. allow access as a separate file)

Answer 2

FILE /proxy/.htaccess
RewriteRule !^browse\.php$ - [F]