If you are using a wifi router it becomes the primary target of the hacker so to protect it you should follow all the security measures properly. And there is nothing like Hackproof but still, you can make it as secure as possible to avoid getting Hacked.
ENABLE WPA2 or WPA3 WIRELESS ENCRYPTION
It is highly recommended for all of you to enable WPA2 or WPA3 wireless encryption.
If you aren’t using a minimum of Wi-Fi Protected Access 2 (WPA2) encryption, this leaves your network wide open because hackers can virtually walk into your network.
Check your Router manufacturer’s manual to learn how to enable WPA2\WPA3 wireless encryption on your router.
ALWAYS CREATE A STRONG SSID NETWORK NAME
Creating a strong SSID (YOUR WIRELESS NETWORK NAME) will help you avoid getting hacked easily.
Using a default SSID or a common one like TP-LINK, D LINK, etc. helps hackers to crack your encryption because they can use prebuilt rainbow tables associated with common SSID names to crack your wireless encryption.
TURN ON YOUR WIRELESS ROUTER’S FIREWALL
Enabling the firewall can make your network less visible to hackers looking for targets on the internet.
USE A VPN TO KEEP YOUR LOCAL TRAFFIC ENCRYPTED
VPN’s make it harder for an attacker to see what the target is doing online, or to redirect users to a malicious website.
DISABLE ADMIN ACCESS WIRELESSLY
By disabling the admin access on your router will avoid hackers from messing with your wireless router as someone who is physically connected to your router with an Ethernet cable can only access the admin features of your wireless router.