Security Zones and Trust Boundaries Template
Documenting security zones, trust boundaries, and the controls enforced at each boundary crossing
The Security Zones and Trust Boundaries template provides a structured approach to documenting security zones, trust boundaries, and the controls enforced at each boundary crossing.
Template Sections
This template includes 7 sections.
Security Zone Model
Describe the security zone model: how zones are defined, the trust levels assigned to each, and the rules governing...
Security Zones Diagram
Diagram section
Boundary Controls
Document the security controls enforced at each trust boundary: network controls, authentication requirements,...
Zone Threat Model
Document the threats at each trust boundary using STRIDE or equivalent: what could an attacker do at each boundary, and...
Trust Boundary Principles
State the principles governing trust boundaries: default deny, explicit trust only, mutual authentication between...
Zone Compliance Requirements
Document compliance requirements that drive the zone model: PCI-DSS network segmentation, data residency, and audit...
Trust Boundary Risks
Document risks: overly permissive boundary rules, undocumented trust relationships, lateral movement paths, and gaps in...
Section Details
Block Types Used
| Section | Block Type | Purpose |
|---|---|---|
| Security Zone Model | Rich Text | Describe the security zone model: how zones are defined, the trust levels... |
| Security Zones Diagram | Diagram | Diagram section |
| Boundary Controls | Security Control | Document the security controls enforced at each trust boundary: network... |
| Zone Threat Model | Security Threat Model | Document the threats at each trust boundary using STRIDE or equivalent: what... |
| Trust Boundary Principles | Principle | State the principles governing trust boundaries: default deny, explicit trust... |
| Zone Compliance Requirements | Compliance Requirement | Document compliance requirements that drive the zone model: PCI-DSS network... |
| Trust Boundary Risks | Risk | Document risks: overly permissive boundary rules, undocumented trust... |
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