A load balancer is not just traffic control. It is the front-line gatekeeper between the public internet and your internal services. That makes load balancer security review a critical checkpoint in any production environment. If you want to prevent data leaks, stop denial-of-service attempts early, and block rogue requests before they touch your core systems, you need a structured, repeatable approach.
The starting point is configuration. Review listener rules for outdated protocols. Disable weak ciphers and force TLS 1.2 or higher. Remove any unused ports. Audit security groups or firewall policies to make sure they allow only the exact traffic you expect.
Next is identity and authentication. If your load balancer terminates SSL/TLS, verify certificate validity, expiration timelines, and trusted issuers. Enforce strong authentication for administrative access to the control plane. Use short-lived credentials and rotate keys often.
Inspect logging and monitoring. A load balancer should output detailed request logs, access logs, and error reports to a secure, centralized system. Real-time alerts for abnormal traffic spikes, suspicious IP ranges, or unexpected HTTP methods can mean the difference between instant mitigation and multi-hour incident response.