A default server configuration for NGINX. Useful as a "catch-all" configuration when there's no server configuration available for a domain on the host that NGINX is running from. Read more: https://lucshelton.com/blog/configuring-a-default-server-for-nginx/

nginx-default-server-configuration.conf

server {
    listen  80 default_server;
    listen  [::]:80 default_server;
    listen  443 ssl default_server;
    listen  [::]:443 ssl default_server;
    server_name_in_redirect off;
    server_name  default_server;
    server_tokens off;

    charset utf-8;

    access_log  /var/log/nginx/host.access.log  main;
    error_log  /var/log/nginx/host.error.log  warn;

    # SSL
    ssl_certificate /etc/nginx/ssl-default/default-fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl-default/default-privkey.pem;

    root   /var/www/default;
    index  index.html index.htm;

    location ~* ^.+ {
        try_files $uri $uri/ =404;
    }

    location / {
        try_files $uri $uri/ =404;
    }

    error_page 404 /404.html;
    error_page 403 /403.html;
    location = /404.html {
        root   /var/www/default;
    }
    
    error_page  500 502 503 504 /500.html;
    location = /500.html {
        root   /var/www/default;
    }
}