Zero Trust Architecture

Table of Contents

• [Overview](#overview)

• [When to Use](#when-to-use)

• [Quick Start](#quick-start)

• [Reference Guides](#reference-guides)

• [Best Practices](#best-practices)

Overview

Implement comprehensive Zero Trust security architecture based on "never trust, always verify" principle with identity-centric security, microsegmentation, and continuous verification.

When to Use

• Cloud-native applications

• Microservices architecture

• Remote workforce security

• API security

• Multi-cloud deployments

• Legacy modernization

• Compliance requirements

Quick Start

Minimal working example:

// zero-trust-gateway.js

const jwt = require("jsonwebtoken");

const axios = require("axios");

class ZeroTrustGateway {

  constructor() {

    this.identityProvider = process.env.IDENTITY_PROVIDER_URL;

    this.deviceRegistry = new Map();

    this.sessionContext = new Map();

  }

  /**

   * Verify identity - Who are you?

   */

  async verifyIdentity(token) {

    try {

      // Verify JWT token

      const decoded = jwt.verify(token, process.env.JWT_PUBLIC_KEY, {

        algorithms: ["RS256"],

      });

      // Check token hasn't been revoked

      const revoked = await this.checkTokenRevocation(decoded.jti);

      if (revoked) {

        throw new Error("Token has been revoked");

// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide

Contents

Zero Trust Gateway

Zero Trust Gateway

Service Mesh - Microsegmentation

Service Mesh - Microsegmentation

Python Zero Trust Policy Engine

Python Zero Trust Policy Engine

Best Practices

✅ DO

• Verify every request

• Implement MFA everywhere

• Use microsegmentation

• Monitor continuously

• Encrypt all communications

• Implement least privilege

• Log all access

• Regular audits

❌ DON'T

• Trust network location

• Use implicit trust

• Skip device verification

• Allow lateral movement

• Use static credentials