GLBA compliance isn’t optional, and neither is getting TLS right. The Gramm-Leach-Bliley Act demands that customer financial data remain secure. That means your TLS configuration is more than a checkbox—it’s a safeguard, a legal shield, and a signal to anyone scanning your infrastructure that you take security seriously.
A GLBA-compliant TLS configuration starts with locking down protocols. Disable SSL entirely. Disable TLS 1.0 and 1.1. Anything lower than TLS 1.2 should never even respond. Go straight for TLS 1.2 and TLS 1.3, configured with strong cipher suites like AES-GCM with at least 128-bit keys or stronger. Elliptic Curve Diffie-Hellman Ephemeral (ECDHE) ensures perfect forward secrecy, which is critical for regulatory audits and penetration tests alike.
Certificates are another trap. Use certificates issued by trusted, public Certificate Authorities and rotate them before expiration. Automate this rotation so there is no human delay. For internal services, private CAs must be secure, logged, and reviewed. Every certificate chain should be complete and valid. Test with tools like SSL Labs to ensure your grade is A or better—regulators won’t accept “mostly secure.”
Configuration isn’t only about libraries and flags. Limit attack surface by enforcing TLS everywhere. Redirect HTTP to HTTPS with HSTS enabled. Block weak ciphers like RC4, 3DES, and anything with SHA-1 signatures. Use strong Diffie-Hellman parameters (2048 bits or higher). Configure OCSP stapling for better certificate revocation handling and faster client connections.