Boundary Protection
Description
Monitor and control communications at external and key internal boundaries of the system.
⚠️ Risk Impact
Without boundary protection, attackers move freely between network segments.
🔧 Remediation
Implement firewall rules and network segmentation. EchelonGraph detects overly permissive firewall rules and public endpoints.
💀 Real-World Attack Scenario
A federal agency's cloud environment had no network segmentation between development, staging, and production. An attacker who compromised a test server through an intentionally vulnerable application pivoted to the production network and accessed citizen PII in production databases.
💰 Cost of Non-Compliance
SC-7 is a CISA priority control. Boundary protection failures in government systems average $6.5M per breach. FedRAMP SC-7 requires both north-south AND east-west boundary controls.
📋 Audit Questions
- 1.Show your network boundary architecture diagram.
- 2.What controls protect external boundaries?
- 3.How is east-west traffic monitored and restricted?
- 4.Are all public-facing endpoints documented and authorized?
🎯 MITRE ATT&CK Mapping
⚡ Common Pitfalls
- ⛔Focusing on north-south boundaries while ignoring east-west segmentation
- ⛔VPC peering without firewall rules between VPCs
- ⛔Not monitoring for unauthorized new public endpoints
📈 Business Value
Network boundary protection is a zero-trust essential. It limits lateral movement, reduces breach blast radius, and is a mandatory FedRAMP and FISMA control.
⏱️ Effort Estimate
16-40 hours for network architecture review and segmentation
EchelonGraph detects overly permissive firewall rules and public endpoints in real-time
🔗 Cross-Framework References
Automate NIST 800-53 SC-7 compliance
EchelonGraph continuously monitors this control across all your cloud accounts.
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