High-Assurance Air-Gapped Enterprise Infrastructure
Established a fully isolated enterprise IT environment capable of supporting a ~300-person organization under high-assurance security requirements, eliminating external attack surfaces while maintaining operational continuity.
Situation
The client required a complete enterprise computing environment deployed within a strictly air-gapped setting, with no external network connectivity. The system needed to meet federal-grade security frameworks (e.g., NIST 800-53 / ICD 503) while still delivering standard enterprise capabilities such as identity management, software distribution, collaboration tooling, and development pipelines.
Solution
A full-stack infrastructure was engineered to operate entirely within a disconnected boundary. The environment functioned as a self-contained digital ecosystem, replicating cloud-like capabilities without external connectivity.
OUTCOMES
Challenges
Connectivity
- •No external connectivity
- •Local service dependency
Compliance
- •Framework alignment gaps
- •Classified boundary constraints
Architecture
- •Cloud dependency
- •Offline functionality gaps
Solutions
Local Dependency Replacement
Designed and deployed on-premises equivalents for all external dependencies.
- Implemented internal DNS and NTP services
- Established local patching infrastructure
- Built internal package repository mirrors
- Removed reliance on external services
Internal Enterprise Services
Delivered enterprise services (identity, storage, collaboration, CI/CD) fully hosted within the enclave.
- Deployed internal collaboration platforms
- Hosted enterprise storage systems locally
- Provided isolated CI/CD capabilities
One-Way Data Ingestion
Unidirectional ingestion architecture preventing outbound data leakage.
- Enforced inbound-only transfer channels
- Eliminated outbound data exfiltration risk
- Established controlled inspection gateways
- Maintained secure ingestion pipelines
Segmented Zero-Trust Network
Built a segmented network topology aligned to zero-trust principles despite physical isolation.
- Applied strict network segmentation policies
- Enforced least-privilege service communication
- Reduced lateral movement exposure
Hardened OS Baselines
Standardized operating systems on hardened enterprise Linux and Windows baselines.
- Applied enterprise security baselines
- Reduced endpoint configuration variance
- Simplified patch and compliance enforcement
- Strengthened platform security posture