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mtls-configuration

Configure mutual TLS with Istio, cert-manager, and SPIFFE/SPIRE.

1|Updated Feb 15, 2026
Search Tags:#security#service mesh#istio#mtls#zero trust#certificate management#spiffe
One-click install
npx skills add https://github.com/tense-i/tslink --skill mtls-configuration
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: mtls-configuration
Source: https://github.com/tense-i/tslink/tree/main/skills/mtls-configuration
Command: npx skills add https://github.com/tense-i/tslink --skill mtls-configuration

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides a comprehensive guide to implementing and managing mutual TLS (mTLS) for secure, zero-trust service-to-service communication within your infrastructure.

Core Features & Use Cases

  • Zero-Trust Implementation: Secure internal network traffic, ensuring only authenticated services can communicate.
  • Certificate Management: Guidance on certificate hierarchy, rotation, and integration with tools like cert-manager.
  • Debugging: Tools and techniques for diagnosing mTLS handshake failures and verifying configurations.
  • Use Case: Securely connect microservices in a Kubernetes cluster using Istio, ensuring that only authorized services can exchange data, even within the cluster's network.

Quick Start

Configure Istio to enforce strict mTLS across all services in the 'istio-system' namespace.

Frequently Asked Questions about mtls-configuration

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I configure mutual TLS for zero-trust service-to-service communication in Kubernetes?▼

To configure mutual TLS for zero-trust communication, you enforce strict mTLS policies across your cluster using a service mesh like Istio, ensuring only authenticated services can exchange data within the internal network.

What is the best way to manage certificate rotation for Istio mTLS?▼

Managing certificate rotation for Istio mTLS involves integrating certificate management tools like cert-manager or SPIFFE/SPIRE to automate certificate hierarchy, issuance, and lifecycle rotation for secure internal networking.

Does Istio support strict mTLS enforcement across all namespaces?▼

Yes, Istio supports strict mTLS enforcement across namespaces by applying PeerAuthentication policies in the istio-system namespace, which globally secures service-to-service traffic against unauthenticated internal requests.

Why does my mTLS handshake fail between microservices in a service mesh?▼

mTLS handshakes fail between microservices due to mismatched certificates, expired credentials, or incorrect PeerAuthentication policies; debugging these TLS issues requires verifying certificate chains and mesh configuration.

Can I use SPIFFE and SPIRE for certificate management in a service mesh?▼

Yes, you can use SPIFFE and SPIRE for certificate management in a service mesh to provide cryptographic identities to workloads, automating secure mTLS certificate issuance and rotation for zero-trust compliance.

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