Add rule to redirect to 404 page

Hello,

You should review this document for your request.

The default characters listed above are always forbidden unless you override the CMSForbiddenURLValues key in the /configuration/appSettings section of your application's web.config file.

For example:

<add key="CMSForbiddenURLValues" value="$\/:?&quot;&lt;&gt;|&amp;%.&apos;#[] =" />

If you have some other rules for redirecting requests another pages, you can develop custom http handler

Regards.

thank you!