iPad security

Here are Apple’s recommended settings for your WiFi Router:

Recommended settings for Wi-Fi routers and access points - Apple Support

You’ll need to consult your Router User Guide for information as to how to change your router settings. If your router was provided by your Internet Service Provider (ISP) you may need to search your providers technical support pages for the required guidance.

You do that using a browser to access your router.

Google your router maker and model to learn the steps.