nginx.conf

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';

    access_log /var/log/nginx/access.log main;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

    server {
        listen 80;
        server_name localhost;

        root /usr/share/nginx/html;
        index index.html;

        # Security headers
        add_header X-Content-Type-Options "nosniff";
        add_header X-Frame-Options "DENY";
        add_header X-XSS-Protection "1; mode=block";
        add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline';";
        add_header Referrer-Policy "strict-origin-when-cross-origin";

        location / {
            try_files $uri $uri/ /index.html;
        }

        # Disable directory listing
        autoindex off;

        # Deny access to sensitive files
        location ~* \.(conf|log)$ {
            deny all;
        }
    }
}