How can I restrict page access by IP address range?
<p>I have a password change page in my website to which I want to restrict access to an IP range, such as 10.0.0.0 - 10.255.255.255 (10/8 prefix).</p>

<p>When a user enters the page, it will check if the user is in this IP range or not. If the user is in the range, it shows a welcome message; if not, then it will redirect the user to a login page.</p>
