How to Block Direct IP Access to Your Website with Nginx

In some scenarios, we want visitors to only access the website through the domain name and not allow direct access via IP. This simple functionality can be achieved by configuring Nginx:

server{
    listen 80 default_server;
    listen [::]:80 default_server;
    server_name _;
    return 403;
}

Remember to restart Nginx after making changes. Now accessing via IP will return a 403 error.