Can a website block user depending on their behaviour or give 404 error to that user? : <ol>
<li>Like if user is giving wrong index continues for like SQL injection</li>
<li>OR Like if user is giving wrong index continues for like DOS attack</li>
<li>Or if i don't want any visitors from certain country
I just wanna know weather it's possible or not, if yes how it works?</li>
</ol>
