DNS rebinding protection

A DNS rebinding attack is performed when a malicious website pretends that IP addresses (usually IPs reserved for local networks) are part of their domain. This allows them to circumvent the same-origin policy implemented by browsers and view data from these IP addresses.

A DNS rebinding attack can happen if someone using your network visits a malicious website that identifies your local IP address and deduces the structure of your local network. The malicious website could then bind their domains to the local IP address, send requests to devices on your network, and then read any responses to those requests. This could allow attackers to access some of your private information, or further compromise your network security.