Steps to save eCommerce website from hackers These are seven of the most prevalent security threats for eCommerce sites: Malware infection. Distributed denial of service (DDoS) attacks. Brute force attacks. Injections. Cross-site scripting (XSS). Zero-day exploits. Customer-end vulnerabilities. And here are the steps you can take to protect your eCommerce website from one or more of those cyberthreats Choose the right eCommerce website platform. Use SSL encryption. Collect customer information selectively (and don’t store it onsite). Use a malware scanner regularly (and get automatic alerts). Require your customers to follow best practices for eCommerce security. Require your employees to follow best practices for eCommerce security. Proactively monitor your website activity. Keep your systems patched and updated. Back up your data regularly. Pay attention to what you download and integrate.
Technology loop holes
For websites nginx should work. As far as i know, this is supporting layer 7.
With pfSense (or OpenSense) you could also solve it. They support HTTP(S), SMTP, ...
Maybe this site will help you, to find the software for your needs:
https://www.cyberciti.biz/open-source/http-web-performance-proxy-load-balancer-accelerator-software/
https://freeloadbalancer.com/#about
Haproxy: loadbalancer
Both of them are very good at loadbalancing
HAProxy is too good.