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AD CS to Modern PKI Migration Playbook: Phase-by-Phase Enterprise Guide
Step-by-step migration playbook from legacy Microsoft AD CS to modern PKI with ACME, HashiCorp Vault, and cert-manager. Covers assessment, parallel operation, workload migration, rollback plans, and realistic timelines.
Apache SSL/TLS Configuration Guide: Complete Setup & Hardening
Configure Apache HTTPD with SSL/TLS from scratch — mod_ssl setup, VirtualHost HTTPS, cipher hardening, HSTS, OCSP stapling, Let's Encrypt with Certbot, SNI multi-site hosting, and mTLS client authentication. Working configs for Ubuntu/Debian and RHEL/CentOS.
cert-manager Complete Setup Guide: Automated TLS Certificates in Kubernetes
Install and configure cert-manager for automated TLS certificate management in Kubernetes. Covers Issuers, ClusterIssuers, Let's Encrypt, Vault PKI, DNS-01 challenges, wildcard certs, and production troubleshooting.
Certificate Expiry Monitoring with Prometheus & Grafana: Complete Setup
Set up certificate expiry monitoring using Prometheus exporters (x509-certificate-exporter, Blackbox exporter, cert-manager metrics), PromQL alerting rules, Grafana dashboards, and AlertManager notifications for Slack and PagerDuty.
Certificate Formats Explained: PEM, DER, PFX/P12, P7B & JKS Conversion Guide
Understand every certificate format — PEM, DER, PKCS#12 (PFX/P12), PKCS#7 (P7B), and JKS. Includes identification, use cases, and complete OpenSSL/keytool conversion commands between all formats.
Java cacerts Trust Store: Complete Management Guide
The definitive reference for Java's cacerts trust store — locate it across JDK versions, list trusted CAs, import and remove certificates with keytool, configure custom trust stores, handle Docker containers, and troubleshoot PKIX path building failures.
Java Keytool Commands Reference: Complete Guide for JKS, PKCS12 & Trust Stores
Complete Java keytool command reference covering keystore creation, certificate import/export, trust store management, format conversion, and troubleshooting for production Java applications.
JWKS Rotation Runbook: Key Rotation for AWS KMS, GCP KMS & Azure Key Vault
Step-by-step runbook for rotating JSON Web Key Sets (JWKS) across AWS KMS, GCP Cloud KMS, and Azure Key Vault. Covers zero-downtime rotation, grace periods, automation scripts, and validation.
Kubernetes TLS Ingress Configuration: Nginx, Traefik & Gateway API with cert-manager
Complete guide to configuring TLS on Kubernetes ingress controllers. Covers Nginx Ingress TLS termination, Traefik IngressRoute, Gateway API TLSRoute, cert-manager auto-issuance, mTLS at ingress, wildcard certificates, and troubleshooting.
Let's Encrypt + Certbot: Complete Setup Guide for Every Server
Set up free, automated HTTPS with Let's Encrypt and Certbot on Nginx, Apache, and standalone servers. Covers HTTP-01, DNS-01 wildcards, auto-renewal, deploy hooks, troubleshooting, and rate limits.
NDES Configuration & Troubleshooting: Complete Guide for SCEP Enrollment
Configure Microsoft NDES (Network Device Enrollment Service) for SCEP certificate enrollment. Covers IIS setup, certificate templates, registration authority, challenge passwords, and fixes for every common NDES error.
Nginx SSL/TLS Configuration & Hardening: Complete Production Guide
Configure Nginx for A+ SSL Labs rating with TLS 1.3, strong cipher suites, OCSP stapling, HSTS, and mTLS. Includes complete configs, troubleshooting, and security header setup for production environments.
OpenSSL Complete Guide: Commands, Configuration & Troubleshooting
Master OpenSSL with this comprehensive guide covering certificate generation, CSR creation, chain verification, TLS debugging, format conversion, and production hardening. Every command you'll ever need.
PKI Automation Platform: What It Is, Why You Need One & How to Choose
Understand what a PKI automation platform does — certificate discovery, lifecycle automation, policy enforcement, and multi-CA orchestration. Includes evaluation criteria, architecture patterns, and build-vs-buy analysis.
X.509 Certificate Fields Explained: Serial, Thumbprint, SAN, Key Algorithm & Extensions
Understand every field in an X.509 certificate — serial number, subject, issuer, SAN, key usage, thumbprint, and extensions. Includes OpenSSL decoding examples and real-world troubleshooting for each field.
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