How to fix 403 Access forbidden when using forbidden characters?

Question

Apache HTTP Server

There are rules

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^admin(/.*)?$ /admin.php/$1 [L]
RewriteRule !^admin index.php [L]

But if you enter one of the following characters in the URL, it will return 403. List: "<" ,">", "*", "%", ":".
All other routing is done in php itself. Thanks in advance.

Answer 1

what should happen in the end? if you entered these characters?