How TLS actually secures a connection — the 1-RTT TLS 1.3 handshake, the certificate chain of trust, and a modern Nginx configuration that fixes the deprecated syntax and dead security headers most tutorials still copy-paste.
Certificates
-
HTTPS and TLS Explained: The Handshake, the Certificates, and a Config That Scores A+ -
Vault PKI Secrets Engine in Production: Intermediate CAs, cert-manager, and Short-Lived Certificates as a Security Primitive A deep-dive into running Vault's PKI secrets engine in production: two-tier CA hierarchy, auto-rotating certificates, cert-manager integration, SPIFFE SVIDs, the revocation story, and operational hardening.
-
Managing SSL Certificates From certificate types to automation with Let's Encrypt.