DEPARTMENT OF DEFENSECLOUD

Executive Summary: Modernizing Military Mission Infrastructure in the Cloud

As military branches, defense agencies, and commercial contractors migrate mission-critical workloads to cloud environments (AWS GovCloud, Azure Government, Google Cloud Public Sector), strict security compliance is non-negotiable. Deploying unclassified or secret defense workloads requires adherence to the DISA Cloud Computing Security Requirements Guide (SRG) and FedRAMP baselines.

DEPARTMENT OF DEFENSECLOUD is the authoritative 56-page technical manual designed for Cloud Security Architects, Defense Infrastructure Engineers, ISSMs, and DevSecOps Leads. Spanning 8 comprehensive modules, this guide provides complete architectural blueprints: categorizing data across DoD Impact Levels IL2 through IL6, implementing DISA Cloud Access Point (CAP) perimeter routing, enforcing FIPS 140-2/3 cryptography, and automating AWS GovCloud IL5 compliance via Terraform HCL scripts.

Deep Dive: DoD SRG Impact Levels & Architecture

The handbook provides production Terraform HCL code, AWS IAM JSON policies, and network routing topologies across five core defense cloud domains:

1. DISA Cloud Computing SRG Impact Levels (IL2 - IL6)

Categorizing defense data and selecting target cloud regions:

• DoD Impact Levels: IL2 (Non-CUI Public Info), IL4 (Controlled Unclassified Information / CUI, PII, PHI), IL5 (Higher Sensitivity CUI & National Security Systems), IL6 (Secret Classified Data requiring physically isolated Secret Region hardware).

2. DISA Cloud Access Points (CAP) & Boundary Protection

Securing DoDIN connection perimeters:

• CAP Boundary Architecture: Directing traffic through DISA-managed NIPS (Network Intrusion Prevention System) sensors and dedicated AWS DirectConnect / Azure ExpressRoute circuits.

Field Engineering: Terraform AWS GovCloud IL5 S3 & KMS HCL Script

Chapter 3 of the handbook provides practical Terraform HCL code for deploying FIPS 140-2 compliant storage in AWS GovCloud (US-Gov-West-1):

# AWS GovCloud Provider Configuration
provider "aws" {
  region = "us-gov-west-1"
}

# 1. FIPS 140-2 KMS Customer Managed Encryption Key
resource "aws_kms_key" "dod_il5_key" {
  description             = "DoD IL5 Storage Master Key - FIPS 140-2 Validated"
  deletion_window_in_days = 30
  enable_key_rotation     = true

  tags = {
    Environment = "DoD-IL5-Production"
    Classification = "CUI-Specified"
  }
}

# 2. Hardened S3 Bucket with Mandatory Encryption & Public Access Block
resource "aws_s3_bucket" "dod_il5_bucket" {
  bucket = "mmn-dod-il5-mission-data-store"
}

resource "aws_s3_bucket_server_side_encryption_configuration" "dod_s3_crypto" {
  bucket = aws_s3_bucket.dod_il5_bucket.id
  rule {
    apply_server_side_encryption_by_default {
      kms_master_key_id = aws_kms_key.dod_il5_key.arn
      sse_algorithm     = "aws:kms"
    }
  }
}

resource "aws_s3_bucket_public_access_block" "block_public" {
  bucket                  = aws_s3_bucket.dod_il5_bucket.id
  block_public_acls       = true
  block_public_policy     = true
  ignore_public_acls      = true
  restrict_public_buckets = true
}

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "EnforceTLSRequestsOnly",
      "Effect": "Deny",
      "Principal": "*",
      "Action": "s3:*",
      "Resource": [
        "arn:aws-us-gov:s3:::mmn-dod-il5-mission-data-store",
        "arn:aws-us-gov:s3:::mmn-dod-il5-mission-data-store/*"
      ],
      "Condition": {
        "Bool": {
          "aws:SecureTransport": "false"
        }
      }
    }
  ]
}

Complete Table of Contents & Module Syllabus

• Module 01 Defense Cloud Foundations & Regulatory Strategy

  Pages 1–7
  DoD Cloud Strategy, FedRAMP Moderate/High baselines, NIST SP 800-145 cloud definitions, and authorization.
• Module 02 DISA Cloud Computing SRG Impact Levels (IL2 to IL6)

  Pages 8–15
  Deep breakdown of Impact Level 2, IL4 (CUI/PII), IL5 (Mission Critical CUI), and IL6 (Secret Classified Data).
• Module 03 DISA Cloud Access Points (CAP) & Perimeter Routing

  Pages 16–23
  Boundary protection architectures, DISA NIPS sensors, AWS DirectConnect / Azure ExpressRoute GovCloud setups.
• Module 04 Cryptography & FIPS 140-2/3 Key Management

  Pages 24–30
  FIPS 140-2/3 cryptographic modules, AWS CloudHSM, Azure Dedicated HSM, envelope encryption, and KMS key policies.
• Module 05 AWS GovCloud & Azure Government Infrastructure Automation

  Pages 31–38
  Terraform HCL infrastructure-as-code for US-Gov-West-1, VPC microsegmentation, and security group rule enforcement.
• Module 06 DevSecOps & Container Hardening in Defense Clouds

  Pages 39–45
  Hardening Docker/Kubernetes container images against DISA STIGs, Iron Bank container repository, and CI/CD pipelines.
• Module 07 Continuous Monitoring (ConMon) & SIEM Ingestion

  Pages 46–50
  Ingesting AWS CloudTrail, GuardDuty, Azure Activity Logs into centralized SIEM (Elastic/Splunk) for DoD compliance.
• Module 08 Multi-Cloud Defense Governance & ATO Acceleration

  Pages 51–56
  Accelerating Authority to Operate (ATO) packages using OpenControl, compliance automation, and enterprise multi-cloud management.

Who Should Read This Handbook?

This handbook is designed for government cloud engineers and defense security leads:

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