Enterprise reverse proxy: HAProxy + Nginx + WAF

Applications shouldn't handle SSL, WAF, rate limiting or load balancing directly. These are infrastructure responsibilities.

Architecture components

• HAProxy + keepalived HA
• Nginx reverse proxy
• Varnish HTTP cache
• Traefik for containers
• ModSecurity WAF
• Let's Encrypt

What we deliver

HA reverse proxy cluster, auto-renewable SSL, WAF, monitoring dashboards.

Example: Nginx reverse proxy

A minimal, ready-to-use block for an app behind Nginx with TLS:

# /etc/nginx/conf.d/app.conf — reverse proxy + TLS
server {
    listen 443 ssl;
    server_name app.example.com;
    ssl_certificate     /etc/letsencrypt/live/app.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/app.example.com/privkey.pem;
    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}