National Security-Grade Network Severance and Isolation

Defence networks carry the most sensitive information a nation possesses. The threat landscape includes the most capable adversaries on earth, operating with state-level resources and persistence.

100%

Classification boundary enforcement

Zero

Cross-domain network reachability

SC/DV

Cleared personnel at every facility

Full

JSP 440 and NATO security compliance

"Our cross-domain solution had been certified and accredited. It passed every penetration test. But the misconfiguration that enabled the covert channel was in a feature that had been added after certification. The accreditation process had not caught up."

Where each module is deployed, and what it does there.

One row per module. Placement on the network, then plain-English purpose at that point.

1. Isolate

   On the D1 to DMZ link and the D3 to D4 link

   Admin, mission and classified each sit on their own physical fabrics. A compromise in admin cannot walk into mission or classified.

2. Firebreak

   On the D0 to D1 link and the D1 to DMZ link

   Real hardware off switches on the public and admin boundaries, cutting the live path into mission and classified estates.

3. Validate

   On the D0 to D1 link and inside the cross-domain DMZ

   Requests crossing into trusted estates are checked for origin, integrity and authority before they reach an operational system.

4. Transfer

   Inside the cross-domain DMZ

   Movement between domains is brokered, often one-way. Transfer governs the route and the landing point.

5. Execute

   On the D2 to D3 link

   Mission actions hold until the right approval is in place.

6. Lock

   On the D3 to D4 link

   Classified access ties to named individuals with the right clearance, device and authority.

UK Sovereign Facilities

All classified data remains within NATO-approved underground facilities in the United Kingdom, managed by SC/DV-cleared personnel under MOD oversight.

Cleared Multi-Party Access

All access requires authorisation from multiple cleared individuals across different roles, preventing any single point of compromise.

JSP 440 Compliance

Automated compliance logging maps directly to JSP 440, JSP 604, and NATO security requirements with continuous evidence generation.

Independent Communications

Out-of-band management via dedicated, secured communications ensures control plane access independent of primary defence networks.

Forensic-Grade Logging

Every access, transfer, and authorisation decision is recorded in tamper-proof, classification-appropriate logs on physically separate infrastructure.

Cleared Recovery Capability

Verified control-plane baselines maintained within appropriately cleared facilities ensure classified system restoration during total compromise scenarios.

Classification Boundary Assessment

Map all cross-domain connections and data flows between classification levels, identifying persistent paths and reachability gaps against JSP 440 requirements.

Sovereign Architecture Design

Design physically separated classification zones with Control modules enforcing each boundary, aligned to MOD and NATO security requirements.

Accredited Pilot

Deploy within a controlled environment with full classification boundary enforcement, multi-party authorisation, and forensic logging for accreditation evaluation.

Operational Capability

Full deployment across defence infrastructure with cleared verified baselines, continuous compliance evidence, and independent communications.