Skip to content
cccskills
FreePublished on GitHub

mtls-configuration

Set up mutual TLS, where services verify each other's certificates, to secure internal communication. The skill guides certificate hierarchy, rotation, gradual enforcement, and troubleshooting connection failures across services and clusters.

OriginalShow the original description

Configure mutual TLS (mTLS) for zero-trust service-to-service communication. Use when implementing zero-trust networking, certificate management, or securing internal service communication.

See how to install

Good for

  • Introduce zero-trust service communication
  • Plan certificate rotation and expiry monitoring
  • Investigate TLS handshake failures
  • Secure communication between clusters

Files included (2)

  • SKILL.md2.6 KB
  • references/details.md5.7 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

mTLS Configuration

Comprehensive guide to implementing mutual TLS for zero-trust service mesh communication.

When to Use This Skill

  • Implementing zero-trust networking
  • Securing service-to-service communication
  • Certificate rotation and management
  • Debugging TLS handshake issues
  • Compliance requirements (PCI-DSS, HIPAA)
  • Multi-cluster secure communication

Core Concepts

1. mTLS Flow

┌─────────┐                              ┌─────────┐
│ Service │                              │ Service │
│    A    │                              │    B    │
└────┬────┘                              └────┬────┘
     │                                        │
┌────┴────┐      TLS Handshake          ┌────┴────┐
│  Proxy  │◄───────────────────────────►│  Proxy  │
│(Sidecar)│  1. ClientHello             │(Sidecar)│
│         │  2. ServerHello + Cert      │         │
│         │  3. Client Cert             │         │
│         │  4. Verify Both Certs       │         │
│         │  5. Encrypted Channel       │         │
└─────────┘                              └─────────┘

2. Certificate Hierarchy

Root CA (Self-signed, long-lived)
    │
    ├── Intermediate CA (Cluster-level)
    │       │
    │       ├── Workload Cert (Service A)
    │       └── Workload Cert (Service B)
    │
    └── Intermediate CA (Multi-cluster)
            │
            └── Cross-cluster certs

Templates and detailed worked examples

Full template library and detailed worked examples live in references/details.md. Read that file when you need the concrete templates.

Best Practices

Do's

  • Start with PERMISSIVE - Migrate gradually to STRICT
  • Monitor certificate expiry - Set up alerts
  • Use short-lived certs - 24h or less for workloads
  • Rotate CA periodically - Plan for CA rotation
  • Log TLS errors - For debugging and audit

Don'ts

  • Don't disable mTLS - For convenience in production
  • Don't ignore cert expiry - Automate rotation
  • Don't use self-signed certs - Use proper CA hierarchy
  • Don't skip verification - Verify the full chain

Reviews

No reviews yet. Tell others what you thought.

Comments

No login needed. Share how it worked for you, ask a question, or note where it did not run.

No comments yet. Be the first to write one.

Comments are published right away. Do not include personal information such as email addresses or phone numbers. Up to 2 URLs.

0 / 1,000 characters

This form is protected by reCAPTCHA, and the Google Privacy Policy and Terms of Service apply.

More skills from this repository

Build and review interfaces against WCAG 2.2 accessibility guidelines. Covers keyboard navigation, screen readers that read interface content aloud, accessible forms, mobile support, and display preferences, helping identify and fix barriers to using a website or app.

  • Audit an interface for accessibility issues
  • Add keyboard navigation and focus management
  • Improve screen reader support for forms
wshobson/agents41KUpdated Oct 19, 2026

ai-debt-detector

FreeSummary

Review AI-generated code for problems hidden behind successful runs. Check failure handling, resource cleanup, unusual inputs, nonexistent dependencies, and departures from project conventions to identify missing safeguards before merging or accepting the work as complete.

  • Audit code after an AI generation session
  • Review an AI-generated pull request before merging
  • Investigate brittle code that appears to work
wshobson/agents41KUpdated Oct 19, 2026

Build Apache Airflow workflows for data pipelines and scheduled jobs. The skill guides task dependencies, retries, waiting for conditions, testing, and deployment, with patterns for tasks that can be safely rerun.

  • Building scheduled data pipelines
  • Designing task order and dependencies
  • Implementing custom tasks and condition checks
wshobson/agents41KUpdated Oct 19, 2026

Plan and carry out an AngularJS to Angular migration, from choosing a rewrite strategy to converting components, services, and routes. Includes a hybrid approach that runs both frameworks together while individual features are migrated.

  • Planning an AngularJS to Angular migration
  • Moving a large app one feature at a time
  • Converting directives into Angular components
wshobson/agents41KUpdated Oct 19, 2026

Identify software protections that hinder inspection, such as debugger detection and obfuscation that makes code harder to understand. Support authorized binary analysis and CTF security challenges with protection findings, bypass strategies, reports, and analysis scripts.

  • Identify protections in an authorized malware sample
  • Plan analysis of a packed executable
  • Implement debugger detection for a CTF challenge
wshobson/agents41KUpdated Oct 19, 2026

Design and review REST and GraphQL APIs with consistent naming, data structures, error responses, pagination for large result sets, and versioning strategies. Helps teams define shared standards and plan changes that existing clients can adopt gradually.

  • Designing a new REST or GraphQL API
  • Reviewing API specifications before implementation
  • Establishing shared API design standards
wshobson/agents41KUpdated Oct 19, 2026

See all skills by wshobson

Report a problem with this skill