ISO 27001 compliance does not stop at your firewall. It demands that every component—hardware, software, and configuration—meets strict standards for security, integrity, and availability. An external load balancer, sitting between public traffic and your application servers, is a critical control point in that chain.
To align your load balancer with ISO 27001, start with documented policies. Map the asset in your information security management system (ISMS). Define its purpose, data flow, and ownership. This is not optional; without asset definition, ISO auditors will mark it as a gap.
Harden the device or service. Disable unused protocols. Enforce TLS 1.2 or higher. Keep firmware, operating systems, and modules patched. Every setting must be traceable to your risk assessment, ensuring your approach is justified and repeatable.
Configure logging at a depth that captures connection attempts, session IDs, and dropped packets. Store logs in secure, tamper-evident systems. ISO 27001 requires evidence; without logs, you cannot prove compliance during incident reviews.