implementing-tlslisted

# Implementing TLS ## Purpose Implement Transport Layer Security (TLS) for encrypting network communications and authenticating services. Generate certificates, automate certificate lifecycle management with Let's Encrypt or internal CAs, configure TLS 1.3, implement mutual TLS for service authentication, and debug common certificate issues. ## When to Use This Skill Trigger this skill when: - Setting up HTTPS for web applications or APIs - Securing service-to-service communication in microservices - Implementing mutual TLS (mTLS) for zero-trust networks - Generating certificates for development or production - Automating certificate renewal and rotation - Debugging certificate validation errors - Configuring TLS termination at load balancers - Setting up internal PKI for corporate networks ## Quick Start ### For Development (Local HTTPS) Use mkcert for trusted local certificates: ```bash # Install mkcert brew install mkcert # macOS # sudo apt install mkcert # Linux # Install local CA mkcert -install # Generate certificate mkcert example.com localhost 127.0.0.1 # Creates: example.com+2.pem and example.com+2-key.pem ``` ### For Production (Public HTTPS) **Kubernetes with cert-manager:** ```bash # Install cert-manager helm install cert-manager jetstack/cert-manager \ --namespace cert-manager --create-namespace \ --set installCRDs=true # Create Let's Encrypt issuer kubectl apply -f - <<EOF apiVersion: cert-manager.io/v1 kind: ClusterIssuer metadata: name: le