NSG Rule
Source + Port
Risk Decision
Rule Update
Challenge
Public inbound access on sensitive ports is one of the clearest cloud exposure risks, but NSG rules
can be complex. A remediation workflow needs to understand source ranges, destination ports, protocol,
priority, direction, and whether the rule is intentionally approved.
Approach
- Evaluated inbound NSG rules for broad sources such as internet-wide CIDR ranges.
- Checked risky ports and services before deciding whether a rule qualified for remediation.
- Preserved context such as priority, description, resource group, subscription, and owner metadata.
- Designed safe handling for allowlisted rules, business exceptions, and cases requiring human review.
Security Value
- Created a repeatable pattern for reducing accidental public exposure in Azure.
- Helped separate genuinely risky rules from approved or context-dependent access.
- Made remediation decisions auditable and easier to discuss with application owners.
Production Considerations
- Azure Resource Graph queries for broad inventory and drift detection.
- Integration with change tickets for production NSG updates.
- Policy reporting to show exposure trends by subscription and application team.