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Knowledge Base & Operational DocumentationHow to Verify a Security Finding After a Firewall Rule Change
A firewall change can block a tested route without fixing the vulnerable service itself. A scanner may report the issue resolved from one network while the service remains reachable through another path.
What to check
Confirm the original finding, test vantage points, public and internal routes, firewall logs, and service exposure. Review whether alternate addresses, IPv6, VPN, or load balancer paths bypass the updated rule.
Recommended next step
Validate the intended exposure reduction from relevant authorized paths and assess the underlying service separately. Document residual risk and ensure network rules remain in source control or change records.
How Informatix Systems can help
Informatix Systems provides penetration testing and network security services. We can review the affected systems and workflow, identify likely causes, and help plan a practical correction. Contact us with the platform involved, when the issue began, and non-sensitive error details.