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Secure Service Exposure with PrivateLink

PRJ-AWS-NET-038

Private service connectivity without internet exposure

~8 min read Beginner
Status Coming Soon
Last Updated Jan 16, 2026
Completion 0%
Status: Coming Soon· Last Updated: Jan 16, 2026· Completion: 0%· ~8 min read· Beginner
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Estimated Monthly Cost

~$25/mo on minimal config
VPC $0Transit GW $15Route53 $6CloudWatch $4
Business ContextOrganizations face increasing challenges with IPv4 address exhaustion, limiting …

The Problem

  • Organizations face increasing challenges with IPv4 address exhaustion, limiting network scalability and hindering expansion into new markets or services.
  • Managing separate IPv4 and IPv6 network infrastructures creates operational complexity, increases administrative overhead, and introduces potential configuration errors.
  • Lack of native IPv6 support restricts the adoption of modern cloud-native applications and services that are increasingly designed with IPv6 first principles, impacting innovation and competitive advantage.

The Solution

  • Implement a comprehensive IPv6 dual-stack architecture across AWS Virtual Private Clouds (VPCs) to enable simultaneous IPv4 and IPv6 connectivity.
  • Configure Egress-Only Internet Gateways (EIGW) for secure, outbound-only IPv6 communication from private subnets, enhancing network security posture.
  • Integrate Amazon Route 53 for robust DNS resolution, supporting both A (IPv4) and AAAA (IPv6) records to ensure seamless service discovery and access.

Business Value

  • Enhanced Scalability: Future-proofs network infrastructure, supporting 100% growth in connected devices and services without IPv4 address constraints.
  • Reduced Operational Cost: Streamlines network management by consolidating IPv4 and IPv6 operations, projected to reduce network administration time by 15%.
  • Improved Performance: Leverages optimized IPv6 routing paths, potentially reducing network latency by up to 10% for IPv6-native traffic.
  • Accelerated Innovation: Enables adoption of cutting-edge technologies and services that rely on IPv6, speeding up time-to-market for new offerings by 20%.

Risk Mitigation

  • IPv4 Address Exhaustion: Proactively addresses the global depletion of IPv4 addresses, preventing future service disruptions and costly workarounds.
  • Network Complexity: Simplifies network design and management by integrating IPv6 natively, reducing the risk of misconfigurations and operational errors.
  • Security Vulnerabilities: Utilizes Egress-Only IGW to prevent unsolicited inbound IPv6 connections to private instances, mitigating potential attack vectors.
  • Vendor Lock-in: Adopts open standard IPv6 protocols, reducing reliance on proprietary IPv4 solutions and increasing architectural flexibility.
GRC MappingNIST SP 800-53 (Rev. 5): Addresses network security controls, specifically AC-4 …

Compliance Frameworks

  • NIST SP 800-53 (Rev. 5): Addresses network security controls, specifically AC-4 (Information Flow Enforcement) and SC-7 (Boundary Protection).
  • ISO 27001:2022: Aligns with Annex A.8.1 (Network Security Management) and A.8.2 (Information Transfer).
  • SOC 2 Type 2: Supports the Security and Availability Trust Services Criteria by ensuring robust network infrastructure and data flow integrity.
  • GDPR (Article 32): Contributes to the security of processing personal data by enhancing network segmentation and access controls.

Security Controls Implemented

  • Network Segmentation: Achieved through AWS VPC IPv6 subnets, isolating different application tiers and data flows.
  • Egress Filtering: Implemented using AWS Egress-Only Internet Gateways (EIGW) to control and restrict outbound IPv6 traffic from private networks.
  • DNS Security: Configured via Amazon Route 53 DNSSEC to protect against DNS spoofing and cache poisoning for both IPv4 and IPv6 records.
  • Access Control Lists (ACLs): Applied at the subnet level within VPCs to filter traffic based on IPv6 source/destination addresses and ports.
  • Security Groups: Utilized to control instance-level traffic, specifying allowed IPv6 protocols and ports for inbound and outbound connections.

Audit Evidence

  • AWS VPC Flow Logs: Detailed records of all IPv4 and IPv6 traffic flowing to and from network interfaces in the VPC.
  • Amazon Route 53 Query Logs: Logs of DNS queries made to Route 53, including IPv6 (AAAA) record lookups.
  • AWS Config Rules: Compliance history and configuration changes for VPCs, EIGWs, and Route 53 resources.
  • Network Architecture Diagrams: Documenting the IPv6 dual-stack implementation, including VPCs, subnets, routing tables, and EIGW configurations.

Regulatory Alignment

  • GDPR (Article 32): Requires appropriate technical and organizational measures to ensure a level of security appropriate to the risk, supported by secure network configurations.
  • HIPAA (Security Rule § 164.312(a)(1)): Implements technical safeguards to protect electronic protected health information (ePHI) through network access controls.
  • PCI DSS (Requirement 1.2): Establishes firewall and router configurations that restrict connections between untrusted networks and any system components in the cardholder data environment.
  • CCPA (Section 1798.150): Addresses reasonable security procedures and practices appropriate to the nature of the information to protect personal information.

Video tutorial coming soon!

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Architecture Diagram

PRJ-AWS-NET-038 Architecture

Technology Stack

PrivateLink
VPC Endpoints
NLB
Private Connectivity

Complete Documentation

Prerequisites

IAM Admin or PowerUser role
AWS CLI v2 configured
Terraform >= 1.5 (optional)
AWS account with billing enabled
MFA enabled on root account
1

Clone & Configure

Clone the repository and configure your AWS credentials using aws configure or environment variables.

aws configure --profile cloudguard
2

Review IAM Policies

Review and attach the required IAM policies to your deployment role. Ensure least-privilege access is applied.

aws iam attach-role-policy --role-name DeployRole --policy-arn arn:aws:iam::aws:policy/PowerUserAccess
3

Initialize Infrastructure

Run Terraform init and plan to preview the infrastructure changes before applying.

terraform init && terraform plan -out=tfplan
4

Deploy Resources

Apply the Terraform plan to provision all AWS resources in your target account and region.

terraform apply tfplan
5

Verify & Monitor

Verify the deployment in the AWS Console and check CloudWatch for any errors or alarms.

aws cloudwatch describe-alarms --state-value ALARM

Deployment Guide

Step-by-step instructions to deploy this project

Download Guide

Architecture Diagram

Visual representation of the system architecture

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Source Code

Complete source code and configuration files

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Video Tutorial

Watch the complete walkthrough video

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