Firewall Security Audit
We audit your firewall rules, configuration and policies to find the gaps that quietly build up over time, showing you which rules expose you, which are redundant, and how to tighten them without breaking what your business relies on.
We review every rule and setting on your firewall estate
Firewall rule sets grow over the years, and old, broad or forgotten rules pile up until nobody is sure what half of them do. We go through your configuration line by line, find the rules that expose you or contradict your policy, and give you a clear plan to clean them up safely.
Rule Base Review
Every rule checked for overly broad access, shadowed entries and permissions no longer needed.
Configuration Hardening
Firewall settings measured against recognised benchmarks to remove insecure defaults.
Exposed Services
Open ports and management interfaces reachable from places they should never be.
Policy Alignment
Whether the rules on the box actually match your written security policy.
Change Management
How firewall changes are requested, approved and recorded over time.
Segmentation Enforcement
How well the firewall enforces the separation between your network zones.
Firewalls Drift Over Time, and Old Rules Become Open Doors.
A firewall is only as good as the rules running on it, and those rules rarely stay clean. Over the years, changes get made under pressure, temporary exceptions become permanent, and broad rules linger long after the reason for them is gone. What started as a tight policy slowly turns into a tangle where nobody is certain what is exposed.
We audit your firewall estate rule by rule and setting by setting, checking the live configuration against your policy and against recognised hardening benchmarks. Our team flags what is redundant, what is risky and what contradicts your intent, then gives you a prioritised plan to tidy it up without cutting off the traffic your business depends on. You end up with a cleaner, tighter rule base you can actually trust.
Standards and Frameworks We Audit Against
- We measure your firewall configuration against the relevant CIS Benchmarks for your platform to remove insecure defaults and enforce sound settings.
- Our review draws on NIST SP 800-41 guidelines for firewalls and firewall policy, together with PCI DSS network segmentation requirements where they apply to you.
- Where your firewalls protect industrial zones, we check that the rules support the segmentation model set out in IEC 62443.
Aligned to the frameworks that matter
Our testing follows the methodologies that set the global standard for application security.