`sites-available/goodquestion.ai`

87 lines
# Rate limiting zone — 10 requests/sec per IP
limit_req_zone $binary_remote_addr zone=goodquestion:10m rate=10r/s;

# HTTP → HTTPS redirect
server {
    listen 80;
    server_name goodquestion.ai www.goodquestion.ai;
    return 301 https://goodquestion.ai$request_uri;
}

# www → apex redirect
server {
    listen 443 ssl http2;
    server_name www.goodquestion.ai;

    ssl_certificate /etc/ssl/certs/goodquestion.crt;
    ssl_certificate_key /etc/ssl/private/goodquestion.key;

    return 301 https://goodquestion.ai$request_uri;
}

# Main server block
server {
    listen 443 ssl http2;
    server_name goodquestion.ai;

    # SSL
    ssl_certificate /etc/ssl/certs/goodquestion.crt;
    ssl_certificate_key /etc/ssl/private/goodquestion.key;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;

    # Security headers
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https:; frame-src https://www.youtube.com https://youtube.com; font-src 'self' data:; connect-src 'self';" always;

    # Rate limiting (burst allows short spikes)
    limit_req zone=goodquestion burst=20 nodelay;
    limit_req_status 429;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript application/javascript application/json application/xml image/svg+xml;

    # Static asset caching
    location ~* \.(css|js|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        proxy_pass http://127.0.0.1:9883;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        expires 7d;
        add_header Cache-Control "public, immutable";
        add_header X-Content-Type-Options "nosniff" always;
    }

    # Block common exploit paths
    location ~* (\.php|\.asp|\.aspx|\.jsp|\.cgi|wp-admin|wp-login|\.env|\.git) {
        return 444;
    }

    # Main proxy
    location / {
        proxy_pass http://127.0.0.1:9883;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

        # Timeouts
        proxy_connect_timeout 10s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;
    }
}